JP6935706B2 - Sample holder and flotation test method using it - Google Patents

Description

The present invention relates to a sample holder and a flotation test method using the sample holder, and more specifically, a flotation tester that uses various flotation agents added in the flotation step as samples and analyzes their effects in advance. A sample holder that holds a sample in the liquid tank and is used for the test in (also called a "floatation agent tester" or "experimental flotation machine"), and a flotation using the sample holder. Regarding the flotation test method.

Froth flotation is known as a kind of mineral processing method. For example, rocks produced from a mine are made into a slurry using a crusher / crusher, and a flotation agent is added to this to make it into a slurry state, which is then agitated and inflated to concentrate the ore containing metal on the surface of the foam. This is a beneficiation method that selects a desired metal from other substances and facilitates recovery. As the flotation agent used in this mineral processing method, a surfactant, an oil or fat, or the like is generally suitable, but it is used properly in consideration of the difficulty of minerals and wastewater treatment.

In general, the surface of rocks is hydrophilic and metals are often hydrophobic. Therefore, in this beneficiation method, when a slurry of ore mixed with water and an oily solution is stirred and bubbles are introduced, it is hydrophilic so that it does not adhere to bubbles. The desired metal can be selected from other substances based on the property that the particles of the above sink and the hydrophobic particles to which the oily solution is attached float with bubbles.

Further, in Patent Document 1, in the smelting step of recovering copper from chalcopyrite by a wet method, gold in the leachate residue obtained by leaching copper from chalcopyrite containing gold is concentrated and efficiently separated. The method of recovery is disclosed. More specifically, first, the leachate residue of gold-containing chalcopyrite is sieved into a sieve product and a sieve product, and the sieved product is flotated to flotate and deposit. Separate into and.

In addition, sulfur is removed from the sieved product and the flotation obtained by flotation, and the desulfurized product is oxidatively roasted. The oxidative roasted product obtained after oxidative roasting is dissolved in a sulfuric acid solution, and the gold-containing residue is separated and recovered from the copper solution. In this way, the gold in the leachate residue obtained by leaching copper from the gold-containing copper sulfide mineral is concentrated and efficiently separated and recovered.

Further, Patent Document 2 discloses a flotation machine capable of preventing defects even when coarse particles are supplied. The flotation machine includes a flotation tank for supplying a slurry containing minerals, an air supply means for supplying air to the slurry, a stirring means for stirring the slurry, and minerals provided near the bottom of the flotation tank. By providing a coarse particle discharge port for discharging the coarse particles of the above, it is possible to prevent problems even if the coarse particles are supplied.

Further, in Patent Document 3, a column flotator is used to grind a copper-containing material containing arsenic, and water is added to a slurry obtained by adding a flotator composed of an inhibitor, a foaming agent and a collecting agent. Is disclosed, and a method for beneficiation of a copper-containing material capable of efficiently separating arsenic minerals from a copper-containing material containing arsenic by a flotation method is disclosed.

Further, in Patent Document 4, as a method for beneficiation of ores containing fine minerals, an excess flotation agent is added from ores such as copper ores containing fine minerals having a size of 5 μm or less such as mica and clay minerals. A beneficiation method capable of efficiently recovering valuable minerals such as copper concentrate is disclosed.

More specifically, an ore containing a fine mineral having a size of 5 μm or less is crushed into a slurry. Before adding the flotation agent to the slurry, fine minerals are aggregated and precipitated by adding diallyldimethylammonium chloride (DADMAC) as an aggregating agent. After that, a flotation agent is added to the slurry for flotation.

In the actual beneficiation process by this beneficiation method, copper sulfide ore mined in the mine is crushed into a slurry for flotation. In flotation, a flotation agent composed of an inhibitor, a foaming agent, a collector and the like is added to the slurry, and air is blown to float the copper-containing minerals, and gangue and the like are settled and separated. The copper-containing minerals (floth flotation) that have emerged during this flotation are recovered and sent to the next pyrometallurgical process as copper concentrate.

It is effective to adjust the components of the chemicals to be added according to the target substance to be beneficiated. By adding a chemical, for example, the degree of hydrophilicity / hydrophobicity of the ore can be artificially manipulated to some extent. The degree of hydrophilicity / hydrophobicity of this ore may be determined by whether it is a non-metal or not, but it is not always the case, and the degree is generally adjusted by an additive chemical.

Further, Patent Document 5 discloses a preferential flotation agent for preparing a mineral raw material with a novel reagent, and a flotation method using the preferential flotation agent. The novel reagent is a flotation that functions as both a selective collector and an anticorrosive agent, and is used for the preparation of non-ferrous metal sulfide and oxide ores, which are metallic copper, lead and zinc ores. It is used. Further, Patent Document 5 also discloses a method for preparing sulfides and oxides of non-ferrous metals such as copper, lead and zinc at the stage of pulverization and beneficiation by the flotation method.

In addition, although examples in the literature are omitted, a small experimental flotation machine (floth flotation tester / flotation agent test) is used to evaluate the operating capacity of the flotation plant in the factory where the flotation process is carried out in advance. It is known to obtain effective test results with reproducibility using the device).

With this flotation tester, various flotation agents added in the flotation process can be used as multiple different samples, their effects can be analyzed, and the mixing ratio of solutions, reagents, etc. required in the actual flotation plant is determined. It is also possible to do. By holding the sample in the flotation tester and stirring it in the flotation agent solution, it is possible to reproduce the surface state simulating the flotation even in a sample that is not in the form of powder or slurry.

Further, Patent Document 6 discloses a permeation rate measuring device provided with a sample holder that moves up and down so that a sample can be contacted with the contents of the main constituent liquid tank, although it is different from the flotation tester. Has been done. In this permeation rate measuring device, a sample holder is arranged above the liquid tank in which the liquid is stored so as to be suspended and supported by the mass measuring device while holding the sample.

More specifically, the sample holder and the liquid tank are moved up and down relative to each other so that the lower end of the sample is brought into contact with the liquid surface of the liquid tank, and the mass change that occurs when the sample permeates the liquid is measured over time by a mass measuring device. In addition to measurement, the liquid is brought into contact with the lower end of the sample smoothly and with high accuracy.

Japanese Unexamined Patent Publication No. 2010-180450 Japanese Unexamined Patent Publication No. 2013-180289 Japanese Unexamined Patent Publication No. 2012-115781 Japanese Unexamined Patent Publication No. 2013-212478 Japanese Patent Application Laid-Open No. 2005-513259 Japanese Unexamined Patent Publication No. 2014-55527

With respect to the flotation method disclosed in Patent Documents 1 to 5 described above, there has been a request to make the selection of the optimum flotation agent more efficient according to the target substance to be beneficiated. In addition to the target substances to be beneficiated in the flotation process, the effects of various flotation agents to be added are analyzed as different samples, and the mixing ratio of solutions, reagents, etc. required in the actual flotation plant is determined. In order to make a decision, it was necessary to efficiently carry out experiments in which different combinations of target substances and different flotating agents were combined in a wide variety of ways while being rearranged.

Therefore, there has been a demand for a sample holder that can respond to a wide variety of combinations of different target substances and different flotating agents while quickly rearranging them. In particular, there has been a demand for a sample holder that is suspended and supported in a stirring tank of a flotation tester and that can be easily attached and detached. However, the sample holder disclosed in Patent Document 6 described above has not been able to achieve the object.

The present invention has been made in view of such a problem, and an object of the present invention is to support a plurality of different samples at an arbitrary height in a stirring tank of a flotation tester and to easily attach and detach them. The purpose is to provide a sample holder.

One aspect of the present invention includes an open-shaped bottomed container (10) capable of separately accommodating a plurality of different samples (1 to 3).
A vertical connection support rod (20) capable of vertically aligning and connecting the bottom surfaces (16) of the plurality of bottomed containers (10) in a downward posture, and
The vertical connection support rod (20) can be loosely fitted with an inner diameter (E) equal to or larger than the outer diameter (D), and the connection cylinder (30) attached to the outer wall (M) of the bottomed container (10). )When,
A plurality of the connecting cylinders (30) are loosely fitted through the vertical connecting support rods (20) in a skewered manner, and the plurality of bottomed containers (10) to which the connecting cylinders (30) are attached are connected to each other. A connecting thread (40) connected so as to define an interval (K) and a height (H) in the vertical direction (V) with each other.
With
The vertically connected support rod (20) is formed with a hook portion (21) that can be hooked to the upper edge (91) of the liquid tank (90) constituting the flotation tester (100).

Further, in one aspect of the present invention, the outer wall (M) of the bottomed container (10) is cylindrical and the first central axis (P) is defined, and the connecting cylinder (30) is cylindrical and the first. The central axis (Q) of 2 is defined, and it is preferable that the first central axis (P) and the second central axis (Q) are parallel to each other.

Further, in one aspect of the present invention, the connecting thread (40) is preferably made of nylon.

Further, in one aspect of the present invention, the connecting cylinder (30) is preferably formed of a polypropylene straw.

Further, the flotation beneficiation test method using the sample holder (50) according to any one of the present inventions can be used.
The sample holder (50) is loosely fitted by penetrating a plurality of the connection cylinders (30) into the vertical connection support rod (20) extending below the hook portion (21) in a skewered manner. Make up a set,
A plurality of different samples (1 to 3) are separately housed in the plurality of bottomed containers (10) supported by the connection cylinder (30).
The hook portion (21) is hooked on the upper edge (91) of the liquid tank (90), and a set of the sample holders (50) is installed in the flotation tester (100).
The plurality of bottomed containers (10) are all immersed in the flotation agent solution filled in the liquid tank (90) of the flotation tester (100).
This is a flotation beneficiation test method performed while maintaining the shape so that the set of the sample holder (50) is not washed away in a stirred state in the liquid tank (90).

According to the present invention, it is possible to provide a sample holder that supports a plurality of different samples at an arbitrary height in a stirring tank of a flotation tester and is easily attached and detached.

It is a front view of the flotation beneficiation tester in the state which the set of the sample holders which concerns on one Embodiment of this invention is attached to the liquid tank. It is a perspective view which shows the state which the set of the sample holder which concerns on one Embodiment of this invention is not attached to the liquid tank of a flotation tester. It is a perspective view which shows the state which the sample holder which concerns on one Embodiment of this invention is removed from a vertical connection support rod, and a plurality of are still connected.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. The present embodiment described below does not unreasonably limit the content of the present invention described in the claims, and all the configurations described in the present embodiment are indispensable as a means for solving the present invention. Is not always the case. Further, throughout the drawings, members and parts having the same effect are designated by the same reference numerals even if there are slight differences in outer shape to avoid duplication of description.

[Floth flotation tester]
FIG. 1 is a front view of a flotation tester in a state where a set of sample holders according to an embodiment of the present invention is mounted on a liquid tank. As shown in FIG. 1, the flotation tester 100 uses various flotation agents added in the flotation step as samples and analyzes their effects. That is, the flotation tester 100 simulates with a small reproducible experimental device in order to evaluate in advance the operating condition and capacity of the flotation plant in the factory where the flotation process is carried out.

The flotation tester 100 is further composed of a liquid tank 90, a base 110, a main body 120, a stirring blade 130, a stirring motor 140, and a stirring shaft 150. The liquid tank 90 is a container in which the object to be tested and the flotation agent are mixed. The base 110 is a flat plate-shaped pedestal on which the liquid tank 90 and the main body 120 are placed and integrally formed.

Since the stirring blade 130 is pivotally suspended from the stirring motor 140 via the stirring shaft 150 at the center of the liquid tank 90 near the bottom, the stirring blade 130 is rotatably driven in the liquid to stir the contents of the liquid tank 90. The flotation tester 100 having such a configuration is subjected to a flotation test by charging the object to be tested into the liquid tank 90.

In this flotation tester 100, various flotation agents added in the flotation process can be used as a plurality of different samples to analyze their effects, and the mixing ratio of solutions, reagents, etc. required in an actual flotation plant can be determined. It is also possible to decide. It is considered that the test efficiency can be improved by providing the sample holder 50 for holding the samples 1 to 3 in the liquid tank 90 of the flotation tester 100. Hereinafter, the sample holder 50 will be described in more detail with reference to FIG.

[Complete sample holder]
FIG. 2 is a perspective view showing a state in which a set of sample holders according to an embodiment of the present invention is not attached to the liquid tank of a flotation tester. As illustrated in FIG. 2, the sample holder 50 includes three bottomed containers 10, two vertical connecting support rods 20, a total of six connecting cylinders 30, and two connecting threads 40. It is configured to be provided, and these are appropriately bonded or loosely fitted to be assembled.

As the materials of each of these members, as illustrated below, the bottomed container 10 is a PET bottle screw cap, the vertically connected support rod 20 is a vinyl-coated wire for gardening, and the connecting cylinder 30 is a polypropylene straw. A nylon fishing line is suitable for the connecting thread 40. However, these are only examples, and are not limited as materials as long as they have the same or higher function and chemical resistance.

That is, any material may be used as long as it has a morphological maintenance function that does not allow it to flow in the liquid tank 90 in a stirred state and has the same or higher chemical stability with respect to the flotating agent to be handled. The same applies to the adhesive used, and the epoxy adhesive meets the required specifications in that it has high strength and is excellent in water resistance, heat resistance, and chemical resistance.

Further, one bottomed container 10 has two connecting cylinders 30 arranged on the outer wall M so that the central axes P and Q of each other (first and second) are aligned in the vertical direction V. It is bonded and integrated with the two connecting threads 40. Further, the three bottomed containers 10 are connected to the two vertically connected support rods 20 at substantially the same predetermined pitch G. The three bottomed containers 10 connected to the two vertically connected support rods 20 at a predetermined pitch G are separated by a distance K.

The outer wall M of the bottomed container 10 has a cylindrical shape defined by the first central axis P. Further, the connecting cylinder 30 also has a cylindrical shape defined by the second central axis Q. The first central axis P, which defines each of these cylinders, and the second central axis Q are parallel.

The bottomed container 10 has an open shape capable of separately accommodating a plurality of different samples 1 to 3. The vertical connection support rod 20 can be connected by aligning the bottom surfaces 16 of the plurality of bottomed containers 10 in a downward posture in the vertical direction. The connection cylinder 30 can be loosely fitted to the vertical connection support rod 20 by an inner diameter E equal to or larger than the outer diameter D, and is attached to the outer wall M of the bottomed container 10. Therefore, the plurality of connecting cylinders 30 are loosely fitted through the vertical connecting support rods 20 in a skewered manner. In other words, it is skewered. Therefore, the second central axis Q penetrating the connecting cylinder 30 coincides with the central axis of the vertical connecting support rod 20.

In addition, play fitting means fitting in a state having play. That is, it means that the fitted object and the fitted object are fitted so that they can move with each other. Further, "playing through" means that there is play in a state where the end protrudes from the member. That is, it means making it possible to move between what is pierced and what is pierced.

Here, the connecting thread 40 defines a distance K and a height H in the direction V perpendicular to each other between the plurality of bottomed containers 10 to which the connecting cylinder 30 is attached. The connecting yarn 40 is divided into section connecting yarns 41 to 43 from the upper side to the lower side. That is, the section connecting thread 41 connects the section from the hook 122 arranged on the ceiling 121 of the main body 120 to the first connection point 11. The section connecting thread 42 connects the sections from the second connecting point 12 to the third connecting point 13. The section connecting thread 43 connects the sections from the fourth connection point 14 to the fifth connection point 15.

Further, the three bottomed containers 10 are distinguished into an upper layer, a middle layer, and a lower layer in order from the top. Further, the upper edge 11 of the upper layer, the lower edge 12 of the upper layer, the upper edge 13 of the middle layer, the lower edge 14 of the middle layer, and the upper edge 15 of the lower layer are distinguished. Reference numerals 11 to 15 attached thereto are common to reference numerals 11 to 15 attached to the first connection points 11 to 5th connection points 15.

That is, the first connection point 11 is set at the upper edge 11 of the bottomed container 10 in the upper layer. The second connection point 12 is set at the lower edge 12 of the bottomed container 10 in the upper layer. The third connection point 13 is set at the upper edge 13 of the bottomed container 10 in the middle layer. The fourth connection point 14 is set at the lower edge 14 of the bottomed container 10 in the middle layer. The fifth connection point 15 is set at the upper edge 15 of the bottomed container 10 in the lower layer.

In this way, the height of the bottomed container 10 of each layer is set. Therefore, the height H of the upper edge 11 of the bottomed container 10 in the upper layer is set by the length of the section connecting thread 41. When the height H is set, the upper edge 13 of the bottomed container 10 in the middle layer is set according to the length of the section connecting thread 42. Similarly, the upper edge 15 of the bottomed container 10 in the lower layer is set by the length of the section connecting thread 43.

Although the distance K in the direction V perpendicular to each other is defined between the plurality of bottomed containers 10, the height at which each layer is arranged may be defined by a predetermined pitch G. According to the present invention, a plurality of different samples can be supported at an arbitrary height in the stirring tank of the flotation tester 100, and a sample holder that can be easily attached and detached can be provided.

The vertically connected support rod 20 is formed with a hook portion 21 having an upper tip bent into a J-shape, while the lower tip 22 is linear in order to simply secure a predetermined effective length X. It is a shape in which any extending part is cut off. Further, the hook portion 21 can be hooked to the upper edge 91 of the liquid tank 90 constituting the flotation tester 100.

Note that FIG. 1 illustrates a state in which the liquid tank 90 is hooked on the upper edge 91 on the left side, but the position is not limited to this position. It does not matter which position it is hung. Further, it is convenient that the effective length X of the vertically connected support rod 20 is shorter than the depth Y of the liquid tank 90 because the hook portion 21 is easily hooked on the upper edge 91 of the liquid tank 90 and is hard to come off. Further, it is necessary to consider setting the effective length X of the vertically connected support rod 20 so that the lower tip 22 of the vertically connected support rod 20 does not reach the stirring blade 130.

FIG. 3 is a perspective view showing a state in which the sample holder according to the embodiment of the present invention is removed from the vertical connection support rod and a plurality of sample holders are still connected. When the vertical connecting support rod 20 is removed from the set of the sample holder 50 shown in FIG. 2, the three bottomed containers 10 connected by the connecting thread 40 are released from the linearly connected morphological maintenance state. .. FIG. 3 shows the configuration of the sample holder 50 in an easy-to-understand manner, and also shows that after the test is completed, the flexible shape as shown in FIG. 3 is not bulky and is convenient for storage.

[Floth flotation test method]
The flotation test method according to the embodiment of the present invention is a flotation test method performed by installing the above-mentioned sample holder 50 on the flotation tester 100. More details are as follows. That is, the set of the sample holder 50 is configured by loosely fitting a plurality of connecting cylinders 30 into the vertical connecting support rod 20 in a skewered manner. The upper part of the vertically connected support rod 20 is bent in an inverted J shape to form the hook portion 21.

The hook portion 21 is hooked on the upper edge 91 of the liquid tank 90, and a set of the sample holder 50 is installed in the flotation tester 100. A vertical connection support rod 20 extends below the hook portion 21 including the hook portion 21. A set of sample holders 50 is formed by loosely fitting a plurality of connecting cylinders 30 through the vertically connected support rods 20 in a skewered shape.

A plurality of different samples 1 to 3 are separately stored in advance in the plurality of bottomed containers 10 supported by the connecting cylinder 30. The set of the sample holder 50 is installed so that the plurality of bottomed containers 10 are all immersed in the slurry 9 filled in the liquid tank 90 of the flotation tester 100. At this time, even in the stirring state in the liquid tank 90 of the flotation tester 100, the flotation test is performed while maintaining the shape so that the set of the sample holder 50 is not washed away.

The slurry 9 filled in the liquid tank 90 is stirred under predetermined conditions, and their effects are analyzed by observing the action and effect of the flotation agents previously stored separately as a plurality of different samples 1 to 3. In addition, it is also possible to determine the mixing ratio of solutions, reagents, etc. required in an actual flotation plant. In addition, by obtaining effective test results with reproducibility, it is possible to evaluate in advance the operating capacity of the flotation plant in the factory where the flotation process is carried out.

According to the present invention, it is possible to provide a sample holder that supports a plurality of different samples at an arbitrary height in a stirring tank of a flotation tester and is easily attached and detached. Since it is possible to respond to a wide variety of combinations of different target substances and different flotating agents while quickly rearranging them, the efficiency of the test can be improved. Further, according to the flotation test method using the sample holder, various flotation agents added in the flotation step can be simultaneously held in the liquid tank of the flotation tester as a plurality of different samples. Therefore, it is possible to improve the test efficiency.

Although the embodiments of the present invention have been described in detail as described above, those skilled in the art can easily understand that many modifications that do not substantially deviate from the novel matters and effects of the present invention are possible. Will. Therefore, all such modifications are included in the scope of the present invention.

For example, a term described at least once in a specification or drawing with a different term in a broader or synonymous manner may be replaced by the different term anywhere in the specification or drawing. The present invention also relates to a specific method for a flotation tester (floth flotation test device / experimental flotation machine), a configuration and operation of a sample holder, and a flotation test (floth flotation test) using them. The present invention is not limited to that described in the above embodiment, and various modifications can be carried out.

Further, as the sample, an embedded resin sample for microscopic observation (hereinafter, simply referred to as an embedded sample) can be used.

The embedded sample is a sample in which a small mass of mineral is embedded in an embedded resin and formed, and the small mass portion of the mineral is mirror-polished to observe the surface of the mineral with a microscope. Such an embedded sample is prepared, the surface of the mineral is brought into contact with various flotators (hereinafter, may be referred to as "conditioning"), the contact angle is measured with a contact angle measuring device, and the wettability of the mineral is grasped. I have something to do. A large contact angle indicates that the wettability is small (difficult to get wet), and in flotation, it has the property of floating with bubbles. That is, by measuring the contact angle of the conditioned sample, the flotation characteristics of the mineral can be easily confirmed without performing flotation.

Here, by forming the size of the embedded sample into a size that can be stored in the bottomed container, the sample is conditioned by the flotation tester while being held by the sample holder of the present invention (hereinafter, "the present invention". It is possible to evaluate the flotation of minerals by performing "conditioning using"). In the actual operation / operation support laboratory, a flotation agent is added to the slurry of mineral powder charged in the flotation tester, and the flotation test is actually performed while stirring and insufflating with the stirring blades to float the minerals. It is common to evaluate sex. Therefore, even when an embedded sample is used, it is possible to condition the mineral surface by a method closer to the actual operation in the flotation tester, instead of simply "dropping" various flotation agents on the mineral surface. Therefore, it is preferable.

Further, in the conditioning using the present invention, since the involvement of the worker is small when the flotation agent is brought into contact with the mineral surface, it is difficult to make a difference in the contact method depending on the skill level of the worker, and further, the mineral surface is exposed. Since the risk of operation mistakes such as scratches is reduced, the effect of reducing the variation in the contact angle measurement results can be expected.

If it is the size of a general embedded resin sample, it is particularly preferable to use the bottomed container as a screw cap of a PET bottle because an appropriate loose fitting state can be obtained.

If a plurality of bottomed containers are provided as shown in FIGS. 1 to 3, it is possible to condition a plurality of samples by operating a flotation tester as a conditioning operation. It is clear that the efficiency of the test presented in is improved.

Further, since the amount of the flotation agent used can be reduced, the reagent cost can be reduced, and harmful gases such as hydrogen sulfide are included in the gas generated by the flotation operation. It may be included, and it goes without saying that it has the effect of reducing the risk of workers being exposed to such gases.

INDUSTRIAL APPLICABILITY The present invention may be adopted as a sample holder in a flotation tester (flotation agent test device / experimental flotation machine) and a flotation test method using the sample holder.

1-3 Samples, 9 Slurries, 10 Bottomed Containers, 11-15 First to Fifth Connection Points, 11 Upper Edges, 12 Upper Edges, 13 Middle Upper Edges, 14 Middle Lower Edges, 15 Lower Layers Upper edge, 20 vertical connection support rod, 21 hook, 22 lower tip (of vertical connection support rod 20), 30 connection cylinder, 40 connection thread, 41-43 section connection thread, 50 sample holder, 90 liquid tank , 91 Upper edge (of liquid tank 90), 100 floating beneficiation tester, 110 base, 120 main body, 121 (of floating beneficiation tester 100) ceiling, 122 (arranged on ceiling 121) hook, 130 stirring blade , 140 Stirring motor, 150 Stirring shaft, D Outer diameter (of vertical connection support rod 20), E Inner diameter (of connection cylinder 30), G Predetermined pitch, H (upper edge 11 of upper layer bottomed container 10) , K spacing (three bottomed vessels 10 arranged vertically V), M outer wall (of bottomed vessel 10), P first central axis, Q second central axis, V vertical, X ( Effective length (of vertical connection support rod 20), Y depth (of liquid tank 90)

Claims (5)

An open-shaped bottomed container that can store multiple different samples separately,
A vertical connection support rod capable of vertically aligning and connecting the bottom surfaces of the plurality of bottomed containers in a downward posture,
It can be loosely fitted to the vertical connection support rod with an inner diameter equal to or larger than its outer diameter, and also has a connection cylinder attached to the outer wall of the bottomed container.
A plurality of the connecting cylinders are loosely fitted through the vertically connecting support rods in a skewered manner, and the plurality of bottomed containers to which the connecting cylinders are attached specify a distance and height in the direction perpendicular to each other. With the connecting thread connected to
With
The vertically connected support rod is formed with a hook portion that can be hooked on the upper edge of the liquid tank constituting the flotation tester.
Sample holder. The outer wall of the bottomed container is cylindrical and a first central axis is defined.
The connecting cylinder has a cylindrical shape and a second central axis is defined.
The first central axis and the second central axis are parallel.
The sample holder according to claim 1. The connecting thread is made of nylon.
The sample holder according to claim 1 or 2. The connecting tube was formed of a polypropylene straw.
The sample holder according to any one of claims 1 to 3. A set of sample holders is formed by penetrating a plurality of the connecting cylinders in a skewered manner and loosely fitting them into the vertically connecting support rods extending below the hook portion.
A plurality of different samples are separately stored in the plurality of bottomed containers supported by the connection cylinder.
The hook portion is hooked on the upper edge of the liquid tank, and a set of the sample holders is installed in the flotation tester.
The plurality of bottomed containers are all immersed in the slurry filled in the liquid tank of the flotation tester.
A flotation test is performed while maintaining the shape so that the set of sample holders is not washed away in the stirring state in the liquid tank.
The flotation beneficiation test method using the sample holder according to any one of claims 1 to 4.

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