Slag mineral separation sand returning chute

Abstract

A slag mineral separation sand return chute is characterized in that a waste ball mill lining plate is laid on the inner wall of a steel outer groove, and the steel outer groove is detachably connected with the waste ball mill lining plate through bolts. The waste ball mill lining plate is used as the wear-resisting layer of the sulfur tank, so that the wear-resisting property of the sulfur tank is improved, the wear-resisting property of the ball mill lining plate is fully utilized, the replacement and maintenance frequency of the slag mineral separation sand return chute is slowed down, and the continuous working time efficiency of equipment is improved.

Description

Technical Field

[0001] The utility model relates to ore dressing equipment, in particular to a slag ore dressing return sand chute. Background Art

[0002] The slag mixed selection production grinding and flotation process in the slag selection workshop of the copper smelting enterprise adopts a stage grinding and stage selection process. The coarse grinding slurry is transported to the φ660 hydrocyclone for classification by a first-stage classification slurry pump, and its overflow enters the first-stage rough selection for selection, and the sand is returned to the ball mill for re-grinding. Due to the high hardness of the slag (Mohs hardness: 4-4.5), the sand concentration after classification by the φ660 hydrocyclone is 87%, and the sand fineness is 18% at -200 mesh. The high sand concentration and coarse particle size cause great wear on the return sand chute. The original return sand chute uses 40mm manganese steel plate, and the average replacement cycle is 2 months. The replacement is relatively frequent, and the plant needs to be stopped for replacement, which not only increases the maintenance cost, but also has a great impact on the continuous and stable production. Utility Model Content

[0003] The utility model aims to provide a slag beneficiation sand return chute which utilizes the lining plate of the abandoned ball mill to improve the wear resistance.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme: a slag dressing return sand chute, characterized in that an abandoned ball mill liner is laid on the inner wall of the steel outer trough, and the steel outer trough and the abandoned ball mill liner are detachably connected by bolts.

[0005] The lining plate in the ball mill is a wearing part. In the prior art, the severely worn ball mill lining plate is usually treated as waste. The utility model utilizes the discarded ball mill lining plate as the wear-resistant layer of the sulfur tank, which not only improves the wear resistance of the sulfur tank, but also fully utilizes the wear resistance of the ball mill lining plate, thereby reducing the frequency of replacement and maintenance of the slag dressing return sand chute and improving the continuous working time of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0007] Figure 2 It is a cross-sectional structural diagram of the utility model. DETAILED DESCRIPTION

[0008] As shown in the figure, the inner wall of the steel outer trough 10 of the slag dressing return sand chute is provided with an abandoned ball mill liner 20, and the steel outer trough 10 and the abandoned ball mill liner 20 are detachably connected by bolts 30. The abandoned ball mill liner 20 is used as the inner lining of the sulfur tank, so that the original wear resistance of the abandoned ball mill liner 20 can continue to be exerted, which can reduce the maintenance frequency and cost of the slag dressing return sand chute.

[0009] Furthermore, cement 40 is applied on the inner wall of the steel outer tank 10 .

[0010] Adding cement 40 between the steel outer trough 10 and the abandoned ball mill liner 20 can not only fill the empty area between the steel outer trough 10 and the abandoned ball mill liner 20, thereby improving the reliability and convenience of fixing the abandoned ball mill liner 20, but also the segmented positioning of the cement 40 can effectively reduce vibration and noise.

[0011] Cement 40 is filled at the waste ball mill liner 20. Since there are inevitably plate gaps at the plate edges of the waste ball mill liner 20, filling with cement 40 can ensure the flatness of the inner wall of the sulfur tank, improve the material flow efficiency and reduce vibration and noise.

[0012] The bolt 30 penetrates the abandoned ball mill liner 20, cement 40 and the groove wall of the steel outer groove 10 from the inside to the outside, the bolt head of the bolt 30 is located at the stepped countersunk hole on the abandoned ball mill liner 20, and the bolt body of the bolt 30 located outside the steel outer groove 10 is connected to the nut 50, and a groove cover 11 is set at the groove of the steel outer groove 10.

[0013] By utilizing the original countersunk bolt connection holes on the abandoned ball mill liner 20, the bolts 30 connecting nuts 50 are inserted through the abandoned ball mill liner 20, cement 40 and the steel outer trough 10 and exposed on the outside of the steel outer trough 10. This is convenient for both connection and fixation as well as disassembly and maintenance. The solution provided in this application can effectively increase the service life of the return sand chute, with an average replacement cycle of 8 months, which greatly reduces the failure rate of the return sand chute and maintains production continuity and stability.

Claims

1. A slag dressing return sand chute, characterized in that: A discarded ball mill liner (20) is provided on the inner wall of the steel outer tank (10), and the steel outer tank (10) and the discarded ball mill liner (20) are detachably connected by bolts (30).

2. The slag dressing return sand chute according to claim 1, characterized in that: Cement (40) is applied on the inner wall of the steel outer tank (10).

3. The slag dressing return sand chute according to claim 1, characterized in that: Cement (40) is filled at the abandoned ball mill liner (20).

4. The slag dressing return sand chute according to claim 1, 2 or 3, characterized in that: The bolt (30) penetrates the waste ball mill liner (20), cement (40) and the groove wall of the steel outer groove (10) from the inside to the outside, the bolt head of the bolt (30) is located at the step-shaped countersunk hole on the waste ball mill liner (20), and the bolt body of the bolt (30) located outside the steel outer groove (10) is connected to the nut (50).

5. The slag dressing return sand chute according to claim 4, characterized in that: A slot cover (11) is provided at the slot opening of the steel outer slot (10).

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