JP4945952B2 - Magnetic separator and billiglass collection method using magnetic separator - Google Patents

Description

  The present invention relates to a magnetic separator that recovers glass material of a cathode ray tube used for a display of a television or a computer as a resource.

  In order to comply with the specific household equipment re-commercialization law (so-called Home Appliance Recycling Law) enforced in 2001, collection of electrical equipment as a designated item and reuse of its materials have been implemented.

  Television is also a designated item, and it is important to recycle CRT, which is its main component.

  With reference to FIG. 6, an outline of recycling of a cathode ray tube will be described.

  First, a television or display collected at a mass retailer or an electric store is manually disassembled (S1: manual disassembly process), and the cathode ray tube is taken out from the inside of the housing (S2: cathode ray tube extraction process).

  Next, the cathode ray tube is divided into a panel and a funnel from the difference in the composition of the glass constituting the cathode ray tube (S3: PF dividing step).

  Thereafter, each of the panel and the funnel is crushed by a crusher represented by a swing hammer or the like, and is made into a small glass piece state that is easy to carry out the subsequent work (S4: Braun tube crushing step).

  Next, the glass piece surfaces are polished by rubbing the glass pieces using a polishing machine represented by a rotating drum or the like (S5: glass piece polishing step).

  The polished glass pieces having a size of about 3 cm to a palm size are shipped as glass cullet to the manufacturer (S6).

  On the other hand, the glass powder group generated in the glass piece polishing process is a foreign substance removing device combined with a sieve, a wind separator, a magnetic separator, etc., and dust, carbon, and other dust mixed in the glass powder group, and The scrap metal is removed (S7: foreign matter removing step), and the obtained billiglass is shipped to the manufacturer as a valuable resource for recycling (S8).

  By the way, as a scrap metal removing device used in the foreign matter removing step, those using magnetic force ("magnetic separator" in the present application, "separator" in patent literature) are known.

  One example is shown in Patent Document 1.

  The magnetic separator described in Patent Document 1 will be described with reference to FIG.

  In the figure, 1 is a separator (“magnetic separator” in the present application), and a magnet (“magnetic field generating means” in the present application) 3 is provided in a separation drum (“pipe” in the present application) 2.

  Here, the mixed powder (“glass powder group” in the present application) 5 charged from the conduit 4 hits the separation drum 2 and flows along the separation drum 2. At this time, the magnetic abrasive material (“metal scrap” in the present application) 6 is attached to the outer periphery of the opposing separation drum 2 under the influence of the magnet 3, and the low melting point glass (“billy glass” in the present application) 7 Is discharged from the conduit 8.

On the other hand, since the separation drum 2 rotates, the abrasive 6 adhering to the separation drum 2 is provided above the separator 1 when the adhering position reaches from the region of the magnet 3 to the region 9 where there is no magnet. The air 11 taken in from the air intake pipe 10 is blown off and discharged from the conduit 12.
JP 2001-179629 A

However, the above conventional technique has the following problems.
First, the problem in the case where the pipe is fixed with respect to the magnetic sorting chamber will be described.

  One is that, since the glass powder group that has been applied hits the same position of the pipe, only a specific position on the pipe surface is worn by the polishing action of the glass powder.

  The other is a decrease in the magnetic separation function due to the deposition of the low melting point glass, dust, or mixed powder 5a in which carbon and abrasive are mixed on the separation drum 2a as shown in FIG.

  That is, if the deposit is made only of an abrasive, the region magnetized by the magnet 3a is expanded, so that the magnetic separation function is not greatly reduced. However, if the deposit contains low-melting glass or dust, In this case, the magnetic field generated to the surroundings is weakened, so that the magnetic separation function is lowered.

  In addition, the deposits contain reusable billiglass, and there is a problem that the yield when recycling the cathode ray tube is reduced.

  As a result, in order to improve the above-described problems, it is necessary to clean the separation drum 2a. If the frequency of cleaning is high, the operation rate of the magnetic separator decreases.

  In the technique described in Patent Document 1, the ratio of the magnetic abrasive 6 mixed into the recovered low-melting glass 7 varies depending on the height h of the passage 13 between the conduit 8 and the conduit 12. That's it.

  That is, when the abrasive 6 having magnetism higher than the height h adheres to the outer periphery of the separation drum 2, when the separation drum 2 rotates, a portion of the attached abrasive 6 higher than the height h becomes a passage guide. It is shaved by the part 13a.

  As a result, the magnetic abrasive 6 is discharged from the conduit 8 together with the low melting point glass 7, and there is a problem that these are sent to the next process while being mixed.

  The present invention solves such a conventional problem, and improves the recovery efficiency from a group of glass powders that were sometimes discarded because the recovery efficiency from billiglass is low, and cleaning the pipe In addition to reducing the suspension period of the magnetic separator, the metal scrap mixed in the collected billiglass is reduced.

In order to achieve the above object, the present invention provides a plurality of pipes provided with magnetic field generating means for generating a magnetic field in a magnetic force sorting chamber for sorting metal scraps mixed in a glass powder group, and the plurality of pipes. And a pipe interlocking means for connecting the plurality of pipes so as to rotate together, and in the magnetic sorting chamber, the plurality of pipes constitute a two-stage pipe group in the horizontal cross-sectional direction, and the pipe group is a pipe interlocking By arranging the means so as to be sandwiched from above and below in the vertical direction, a plurality of pipes can be linked and rotated by rotating the pipe interlocking means , so that billiglass is collected while rotating these pipes. .

  With this configuration, wear on the pipe surface can be evenly advanced, and the amount of billiglass adhering to the pipe surface can be reduced.

  According to the present invention, wear on the pipe surface progresses evenly, and the amount of billiglass and dust adhering to the pipe surface can be reduced, thereby preventing a reduction in the yield of billiglass that can be recycled.

  Moreover, since the frequency | count of performing maintenance of a pipe can be reduced, the operation rate of a magnetic separator can be improved.

In the embodiment of the present invention, a plurality of pipes provided with magnetic field generating means for generating a magnetic field in a magnetic force sorting chamber for sorting metal scraps mixed in a glass powder group, and the plurality of pipes are connected to each other. And a pipe interlocking means for connecting the plurality of pipes so as to move. In the magnetic separation chamber, the plurality of pipes form a two-stage pipe group in the horizontal cross-sectional direction, and the pipe group vertically connects the pipe interlocking means. By arranging the pipes so as to be sandwiched from above and below, a plurality of pipes can be linked and rotated by rotating the pipe interlocking means , so that billiglass is collected while rotating these pipes.

  By doing so, the surface of the pipe is uniformly worn by the glass powder group put into the magnetic separation chamber, and the amount of metal scraps and billiglass adhering to the pipe surface can be suppressed, so a magnetic field generating means is formed. It is possible to suppress a decrease in the magnetic field.

  As a result, the yield of reusable billiglass can be improved, and the opportunity to maintain pipes can be reduced.

  In another embodiment of the present invention, a pipe having magnetic field generating means for generating a magnetic field is provided in a magnetic force sorting chamber for sorting metal scrap mixed in the glass powder group, and this pipe is rotated. While collecting billiglass and attaching metal scrap to the pipe surface, the collection time of the metal scrap and billiglass is varied.

  By doing in this way, it can prevent that the metal waste sorted out using the pipe which has a magnetic field generation | occurrence | production means mixes in billiglass.

  As a result, it is possible to provide billiglass having high purity and high value as a resource.

Further, since the plurality of pipes can be linked and rotated by rotating the pipe interlocking means , a large number of pipes can be rotated with less power, and the above-described effects can be obtained.

  Furthermore, in another embodiment of the present invention, in addition to the above-described embodiment, the pipe is vibrated.

  By doing this, billiglass and dust adhering to the pipe surface can be screened out, so that it is possible to suppress a decrease in the magnetic field strength generated by the magnetic field generating means, so metal scraps and billiglass etc. This improves the sorting accuracy.

  In particular, since the reduction in the magnetic field strength can be suppressed, it becomes possible to adsorb metal scraps for a long period of time, and the opportunity for cleaning the pipe is reduced, so that the reduction in the operating rate of the magnetic separator can be suppressed.

  In another embodiment of the present invention, the magnetic field sorting chamber is vibrated instead of the above embodiment.

  As described above, since the entire magnetic sorting chamber can be vibrated, all the pipes can be vibrated uniformly, so that a plurality of pipes can be used in a balanced manner.

  Embodiments of the present invention will be described below with reference to the drawings.

Example 1
First, FIG. 1 shows a schematic diagram of the process of removing foreign substances from the glass powder group generated in the glass piece polishing step.

  In the figure, reference numeral 30 denotes an input unit for supplying a glass powder group 31 generated by polishing a glass piece of a panel or funnel with a crusher or the like.

  A glass powder group (not shown) guided from the input unit 30 to the foreign matter removing device 26 passes through the sieve 26a to become a dust-removed glass powder group 23 from which dust 31a such as dust and carbon is removed.

  Next, the dust-removed glass powder group 23 is made of billet glass 25 by removing metal scraps by a magnetic separator 32. 31b is a metal scrap to be taken out.

  This billiglass 25 is shipped as a recyclable material.

  Hereinafter, the magnetic separator 32 will be described in detail.

  FIG. 2 is a horizontal sectional view of the magnetic sorting chamber, and FIG. 3 is a longitudinal sectional view of the magnetic sorting chamber.

  The magnetic separator of this application is demonstrated using these FIG. 2, FIG.

  Reference numeral 15 denotes a magnetic separation chamber, and a pipe 16 using a nonmagnetic tube is provided inside.

  As the material of the pipe 16, stainless steel (JIS standard SUS304 system, hereinafter referred to as “SUS”) is preferable from the viewpoint of corrosion resistance and wear resistance.

A magnet 17 is provided inside the pipe 16 as magnetic field generating means.
The magnet 17 may be an electromagnet or a permanent magnet.

  A pipe rotation driving gear 18 is provided at the end of the pipe 16 to transmit the force supplied from the outside of the magnetic sorting chamber 15 as the driving force of the pipe 16.

Then figure 19 is a pipe interlocking means for rotating with a plurality of pipes 16 connecting engagement, the force applied to the pulley 21 to the pipe rotary drive gear 18 via the pipe interlocking means 19 Communicating.

  In the embodiment shown in the figure, the pipe group 20 composed of the plurality of pipes 16 is provided in two stages. As shown in the figure, a pulley 21 provided at the end of the pipe interlocking means 19 is provided. By connecting and rotating with the belt 22, the two-stage pipe group 20 is driven with a single power.

  Here, as shown in FIGS. 2 and 3, the pipes 16 are arranged vertically and horizontally so as to cover the entire horizontal section of the magnetic field sorting chamber 15.

  In FIG. 2, the hatched portion is the lower pipe 16a.

  If the glass powder group 23 from which dust has been removed is put into the magnetic force sorting chamber 15 in such a state, the glass powder group 23 from which dust has been removed always comes into contact with any one of the pipes 16 and 16a.

  That is, the metal scrap 24 contained in the glass powder group 23 from which the dust has been removed always comes into contact with the pipe 16 and adheres to the pipe surface by the magnetic field generated by the magnet 17. (See Figure 4)

  At this time, since the pipe 16 is rotated by the driving force of the pipe rotation driving gear 18, only the metal scrap 24 adheres to the pipe surface, and the billiglass 25 passes through the pipe group 20 and is below the magnetic sorting chamber 15. Can be collected in a billiglass collection chamber (not shown) provided in the building.

  In addition, as shown in FIG. 5, if the pipe 16 is vibrated by providing a convex portion 19b on a part of the pipe interlocking means 19a, the billiglass 25 attached to the pipe surface can be screened off. .

  Further, as shown in FIG. 1, the entire pipe 16 is vibrated uniformly by applying vibration to the entire magnetic sorting chamber 15, such as by providing a magnetic sorting machine 32 having the magnetic sorting chamber 15 on the same table 27 as the wind sorter 26. Therefore, the billiglass 25 attached to the pipe surface can be screened out evenly.

  That is, if no other metal scrap 24 such as billiglass 25 adheres to the pipe surface, the magnetic force generated by the magnet 17 is not reduced, so the number of times the pipe 16 is cleaned can be reduced. The period during which the machine 32 is operated becomes longer.

  In addition, as the number of pipes 16 increases, the yield of reusable billiglass 25 obtained by sieving billiglass 25 from the pipe surface is improved, so that it is more effective when the number of pipes 16 is large. .

  Moreover, since the pipe 16 is rotating, the glass powder group 23 from which dust has been removed is not hit only locally, so that the wear of the pipe surface is evenly performed and the life of the pipe 16 can be extended. It becomes possible.

  And after collecting billiglass 25, magnet 17 which is a magnetic field generation means is removed from pipe 16, and metal scraps 24 which adhered to the pipe surface are collected.

  That is, by removing the metal scraps 24 adhering to the pipe surface at a position far from the collected billiglass 25 while the magnetic separator 32 is stopped, the metal scraps 24 can be prevented from being mixed into the billet glass 25.

  As described above, if the present invention is used, the yield of the glass material used for the cathode ray tube is improved, and a high-quality glass cullet or billiglass can be provided as a recycled material with high sorting accuracy.

  In addition, it is also possible to adjust the minimum diameter of the billiglass 25 by adjusting the coarseness of the sieve 26a.

  The present invention can be used for sorting all kinds of powders such as powders used in foods and scrap metal.

The conceptual diagram of the process of removing a foreign material from the glass material in one Example of this invention 1 is a horizontal sectional view of a magnetic separation chamber in one embodiment of the present invention. The longitudinal cross-sectional view of the magnetic separation chamber in one Example of this invention Pipe state explanatory diagram in one embodiment of the present invention Side view of pipe interlocking means in another embodiment of the present invention Explanatory drawing showing the process of recycling conventional CRT Longitudinal sectional view of a conventional separator State explanatory diagram of conventional pipe

Explanation of symbols

15 Magnetic sorting chamber 16 Pipe 17 Magnet (magnetic field generating means)
19 Pipe interlocking means 23 Dust-removed glass powder group 24 Metal scrap 25 Billiglass 31 Glass powder group

Claims (5)

The magnetic separation chamber for sorting scrap metal mixed in a glass powder group, a plurality of pipes that internally provided a magnetic field generating means for generating a magnetic field, of the plurality pipes plurality of to rotating in continuous engagement A pipe interlocking means for communicating between the pipes, and in the magnetic force sorting chamber, the plurality of pipes constitute a two-stage pipe group in a horizontal cross-sectional direction, and the pipe group connects the pipe interlocking means from above and below in the vertical direction. The magnetic separator according to claim 1, wherein the plurality of pipes are linked and rotated by rotating the pipe interlocking means by being arranged so as to be sandwiched . The pipe interlocking means has a convex part at a part thereof, and the convex part is provided at a position where the pipe and the pipe interlocking means are in contact with each other to vibrate the pipe. The magnetic separator according to 1. The magnetic separator according to claim 1 or 2 , wherein vibration is applied to the magnetic separation chamber. A Birigarasu collection method using a magnetic separator of claim 1, after the glass powder group was put into magnetic separation chamber were collected Birigarasu by attaching scrap metal to the surface of the pipe, said pipe after stopping the magnetic field generator in said taking out the magnetic field generating means or in said pipe from the inner, Birigarasu collection method using a magnetic separator which is characterized in that collecting the scrap metal adhered to the pipe surface. A Birigarasu collection method using a magnetic separator according to claim 2, after the glass powder group was put into magnetic separation chamber were collected Birigarasu by attaching scrap metal to the surface of the pipe, said pipe after stopping the magnetic field generator in said taking out the magnetic field generating means or in said pipe from the inner, Birigarasu collection method using a magnetic separator which is characterized in that collecting the scrap metal adhered to the pipe surface.

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