JPS6034418B2 - Discharge port liner in rod mill - Google Patents

Description

[Detailed Description of the Invention] This invention is a grinding machine that uses rods (hereinafter referred to as rod mill), in which the rods are rotated parallel to the rotation center axis of the rod mill without being curved, thereby preventing excessive grinding. This relates to a discharge port liner in a rod mill constructed as follows.

A rod mill has a liner attached to the inner circumference of the mill body.
The rods stored inside the rod mill roll on the liner as the rod mill rotates, crushing and pulverizing the ore thrown in.
(hereinafter abbreviated as "grinding"), and the types include a center-periphery discharge type that feeds raw ore from both ends of the main body and discharges the ground ore from the center, and an end-periphery discharge type. There are a variety of types.

What is shown in Figure 1 is a central peripheral discharge type rod mill body cut and unfolded in all directions of its axis to show the arrangement of liners.One end of the main body is A-B, green, and the other end is A'- B'
Indicated by edges. As shown in the developed arrangement diagram, a large number of liners are arranged in parallel all over the inner circumference of the mill body, and the liners 3 and 3' have a discharge port 2 at the center in the circumferential direction of the rod mill body. A vertical slope 8 having a sloped surface 9 from the bottom surface 10 of the space uniformly continuous with the liner base 4 in the axial direction of the rod mill is disposed. The liners 3 and 3', which have a conical slope 7 and a vertical slope 8 around the discharge port 2, are adjacent to each other along the circumference as shown in the figure, or are separated by several liners 1 sandwiched between them. There are some things that can be installed.
As shown in FIG. 4, the liner 1 is placed entirely on a liner base 4 with ore and rods (none of which are shown).
A lifter 5 for stirring up the water is continuously and integrally provided. This applicant has patented No. 5 for a liner with a lifter.
He has several patented inventions based on the rod mill liner of No. 74843, and this invention also uses the rod mill liner of the above patented invention. To explain the patented invention with reference to FIG.
The position and shape of the lifter 5 can be adjusted by moving the liner base 4 forward from the attachment hole 6 of the bolt (not shown) that attaches the liner base 4 to the mill body by a specific value in the rotational direction of the rod mill, with the diameter of the rod as a standard length. The apex of the lifter is located at the attachment hole 6 at the limit of wear, thereby extending the service life of the liner and improving and maintaining the grinding efficiency. Furthermore, the applicant discovered that there is a peculiar phenomenon in the progress of wear due to grinding of a liner having a discharge port 2 in a central peripheral discharge type rod mill. The patent application No. 131084 was filed in 1972 regarding a liner that equalizes the wear rate of the liner by providing a liner. However, this invention is basically based on the above-mentioned liner, and in order to smoothly discharge the crushed grains staying around the discharge port, the discharge port is inserted from both ends or one end of the lifter 5 in the direction of the rotation axis of the mill body. By configuring the vertical slopes 8 at predetermined angles in two directions, it is intended to prevent excessive grinding and contribute to improving productivity and preventing pollution.

Hereinafter, the shape and configuration of the liner will be explained based on embodiments of the present invention.

The liners 3 and 3' shown in FIGS. 3 and 5 are liners having a liner discharge port 2 in a central peripheral discharge type rod mill, and the cross section thereof is a space bottom surface 10 with a conical slope 7 as shown in FIG. 8 and 10 show liners 11 and 11' having a liner discharge port 2 in a rod mill of the edge peripheral discharge type, and the cross section thereof shows a vertical slope 8 having a sloped surface 9. As shown in FIG. 12, there is a vertical slope 8 with a slope surface 9 at the inner end of the bottom surface 10 of the space with a conical slope 7, and a vertical wall 12 at the end side.
It constitutes. Furthermore, the liner shown in FIG. 13 is a liner for a rod mill of the central peripheral discharge type, and the liner has a discharge port 2 with an independent conical slope 7, and vertical slopes 8 with sloped surfaces 9 are formed at the front and rear sides. The liner 13 having a single discharge port configuration is shown in FIG. 16, which is a liner for a rod mill of the edge peripheral discharge type, and has a discharge port 2 with a conical slope 7 independently, and a space bottom surface at the inner end. 10, a liner 14 having a single discharge port configuration is shown, which has a vertical slope 8 with a sloped surface 9 and a wall 12 perpendicular to the bottom surface 10 of the space at the end side. Note that these configurations can be implemented regardless of whether the material of the liner is steel or rubber.

With the above structure, the crushed particles can be smoothly discharged from the vertical slope 8 without preventing abnormal wear of the rod and equalizing the wear rate of the liner, thereby preventing excessive abrasion. This contributes extremely effectively to improving productivity and preventing pollution.

[Brief explanation of the drawing]

FIG. 1 shows a developed arrangement of liners in a rod mill of the center peripheral discharge type in which the present invention is implemented, FIG. 2 shows a developed arrangement of liners in a rod mill of the peripheral discharge type, and FIG. Figures 4 and 5 show the shape of the liner used in the central peripheral discharge type rod mill of the present invention, in which discharge ports are formed opposite each other. Each shows a cross-sectional view taken along the arrow A-A' and a cross-sectional view taken along the B-B' arrow, FIG. 7 shows a cross-sectional view taken along the arrow C-○ in FIG. 5, and FIGS. 8 and 10 show the periphery of the end. A liner used in a discharge type rod mill is shown, and FIGS. 9 and 11 are similar to those in FIGS. 8 and 10, respectively.
-〇A cross-sectional view of the loss of vision and a cross-sectional view taken along the line E-E', Fig. 12 shows a cross-sectional view taken along the line F-F' of Fig. 10, and Fig. 13 shows the shape of the present invention in one liner. 14 and 15 respectively show a sectional view taken along the line G-G' in FIG. The figure shows a liner used in a rod mill of the edge-periphery discharge type having a single liner shape according to the present invention, and FIGS. 17 and 18 are sectional views taken along line 1-1' of FIG. 16, respectively. It shows a sectional view taken along the line J-J'. In the figure, 1 is a liner 2 is a discharge port, 3 is a liner with a discharge port, 4 is a liner base, 5 is a lifter, 6 is a bolt mounting hole, 7 is a conical slope, 8 is a vertical slope, 9 is a slope surface, 1
On the bottom of the river space, 11 is a liner with a discharge port, 12 is a vertical wall, 13 is a liner with a single discharge port, and 14 is a liner with a single discharge port. Hair 1 Figure Z Figure Chi 7 Figure 2 Figure 3 Fist Figure 5 Recruiting Millet Chi Figure Chi Figure 8 Millet Jo Figure 13 Buddha Figure 4 Tsuyoshi Figure 5 Ticket” 7 Diagram Diamond’8 Diagram

Claims (1)

[Claims] 1. A liner used in a rod mill has a discharge port 2 with a conical slope 7, and the rotation axis of the mill is set at a predetermined angle from the bottom surface 10 of a space uniformly continuous with the liner base 4. This discharge port liner in a rod mill is constructed by providing a vertical slope 8 having a slope 9 in the front and rear directions in a lifter 5 section. 2. A vertical slope 8 having a discharge port 2 with a conical slope 7 and having a slope 9 at a predetermined angle at one end in the front and back directions of the mill rotation axis from the bottom surface 10 of the space uniformly continuous with the liner base 4.
The discharge port liner according to claim 1, wherein the lifter 5 is provided with a vertical wall 12 at the other end thereof.