CN216826499U

CN216826499U - Slag removing device of ball mill in wet-type grading of mine

Info

Publication number: CN216826499U
Application number: CN202220447051.9U
Authority: CN
Inventors: 于涛; 杜吉先; 王爱强; 郭秀萍; 梁猛; 张杏杰
Original assignee: Tonghua Iron And Steel Group Slate Mining Co ltd
Current assignee: Tonghua Iron And Steel Group Slate Mining Co ltd
Priority date: 2022-03-03
Filing date: 2022-03-03
Publication date: 2022-06-28
Anticipated expiration: 2032-03-03

Abstract

The utility model relates to a mine mineral processing equipment field, ball mill dross removal mechanism in mine wet-type selection promptly. The device adopts MQG2700 × 3600 or MQY2700 × 3600 ball mill model or below, and wet ball mill sorting process to remove impurities above 2 mm. The slag removing device comprises a slag removing box body with an opening on the upper surface, wherein the bottom surface of the slag removing box body is provided with a discharge port; a Z-shaped interlayer is arranged in the deslagging box body, a white steel sieve plate is arranged on the lower surface and the side surface of the Z-shaped interlayer, and a steel bar fence is arranged on the high surface of the Z-shaped interlayer. The device has the advantages of reasonable design, simple and compact structure, easy installation, low price, material saving, good slag removal effect, reduction of various equipment accidents caused by sundries blockage, reduction of maintenance labor intensity and reduction of production cost output.

Description

Slag removing device of ball mill in wet-type grading of mine

Technical Field

The utility model relates to a mine mineral processing equipment field, ball mill dross removal mechanism in mine wet-type selection promptly. The device adopts MQG2700 × 3600 or MQY2700 × 3600 ball mill model or below, and wet ball mill sorting process to remove impurities above 2 mm.

Background

In the prior art, a ball mill mainly has the function of grinding ores in a beneficiation process, the ball mill is divided into a lattice type ball mill and an overflow type ball mill according to an ore discharge mode, the lattice type ball mill is usually used as first-stage ore grinding, the overflow type ball mill is usually used as second-stage or third-stage ore grinding, the lattice type ball mill is used as first-stage ore grinding, the ore treatment amount is large, the ore discharge particles are thick, the lattice type ball mill is usually further classified through a classifier or a linear sieve, large-particle ores pass through the classifier or the linear sieve and are forcibly returned to the first-stage ball mill for further crushing, small-particle ores enter the next flow along with ore pulp into an overflow chute for classification under the buoyancy of water, the ore pulp enters a pulp pump for next flow for classification, and passes through equipment such as a magnetic separator, a slag separator, a cyclone and the like, and useful ores enter the second-stage ball mill for grinding so as to improve the grade of the ore concentrates. Because the ore comes from different stopes, the detonating tube that the blasting produced can't be clear away, debris such as detonating tube, rubber tube, saw-dust can be mixed in the ore to the inevitable, and these debris can get into the system technology of grading along with the ore pulp, after useful mineral is selected, tailing and debris get into the concentration tank, the effect in concentration tank is for the tailings sand deposits, the tailings sand through the deposit is input the tailings dam, the clear water of having settled can be recycled among the ore dressing technology, because debris proportion is lighter can float on the surface of water, can get back to in the ore dressing technology water pipe along with the clear water of having settled, cause water pipe, valve to block, the jam of water pipe can cause the water pressure to reduce, bring undulant easily to cause the technology accident for ball mill ore grinding technology. The main technical accidents of ore grinding are the phenomenon of 'bulging' of the ball mill, the phenomenon of 'rough running' caused by the first-stage ball mill, the phenomenon of spitting iron slag caused by the second-stage ball mill, the broken iron slag can enter a sorting system along with ore pulp and can be deposited in various feeding and discharging boxes and pump pools, the large broken iron slag can be accumulated in the boxes and the pump pools due to the fact that the large broken iron slag is heavier, various blockages can be caused due to long-time accumulation, and the small broken iron slag can abrade spare parts of various sorting equipment of pipelines along with the ore pulp in the conveying process of the conveying equipment, so that equipment accidents are caused, and the service life of the equipment is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the aforesaid not enough and provide a ball mill dross removal mechanism in wet-type selection of mine that slagging-off is effectual.

The technical solution of the utility model is that: the deslagging device of the ball mill in the wet-type classification of the mine is characterized by comprising a deslagging box body with an open upper surface, and a discharge port is arranged at the bottom surface of the deslagging box body; a Z-shaped interlayer is arranged in the deslagging box body, a white steel sieve plate is arranged on the lower surface and the side surface of the Z-shaped interlayer, and a steel bar fence is arranged on the high surface of the Z-shaped interlayer.

In the above scheme, the method further comprises:

the slag removing box body is provided with a dispersion water pipe.

The included angle between the water flushing and dispersing pipe and the side surface of the slag removing box body is 15-20 degrees.

The upper sieve mesh of the white steel sieve plate is a trapezoid sieve mesh with a narrow upper part and a wide lower part, and the aperture is larger than the diameter of ore discharge particles of the ball mill.

The utility model has the advantages that: 1. the box body with the proper size is manufactured, the suspended white steel sieve plate, the vertical sieve plate and the high-position white steel sieve plate are arranged in the box body, and when the screening groove body is filled with ore pulp, ore leakage accidents cannot be caused due to insufficient screening area. The cross section of each screen hole of the white steel screen plate is trapezoidal, one surface of the screen is narrow, and one surface of the screen is wide, so that when the screen holes are blocked to knock and wash, slag blocks can not be cleared away from the screen holes, and blockage removal is facilitated. 2. The blank space is arranged at an accident opening reserved for the ball mill to have an 'expansion' accident or the ore running due to untimely nursing. 3. The arrangement of the steel bar fence can prevent the nursing staff from falling into the deslagging box to cause injury when handling accidents. 4. The arrangement of the flushing and dispersing water pipe can prevent sundries from being accumulated and ensure that the screening area of the white steel screen plate is enough. 5. The device has the advantages of reasonable design, simple and compact structure, easy installation, low price, material saving, good slag removal effect, reduction of various equipment accidents caused by sundries blockage, reduction of maintenance labor intensity and reduction of production cost output.

Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic cross-sectional structure of the present invention.

Fig. 2 is a schematic view of a rebar fence structure.

Fig. 3 is a schematic structural diagram of a white steel sieve plate.

Detailed Description

Referring to fig. 1, 2 and 3, the names of the components are as follows: the slag removal box comprises a slag removal box body 1, a frame 2, a Z-shaped interlayer low surface 3, a Z-shaped interlayer high surface 4, a Z-shaped interlayer side surface 5, a blank area 6, a feeding hole 7, a discharging hole 8, a flushing water pipe 9 and sieve holes 10.

Referring to fig. 1, 2 and 3, the slag removing device of the ball mill in wet-type separation of mines comprises a slag removing box body 1 with an open upper surface, and a discharge opening 8 is arranged at the bottom surface of the slag removing box body 1; a Z-shaped interlayer is arranged in the slag removal box body 1, a low surface 3 and a side surface 5 of the Z-shaped interlayer are white steel sieve plates, and a high surface 4 of the Z-shaped interlayer is a steel bar fence. The deslagging box body 1 is provided with a dispersion water pipe 9. The angle between the water dispersing pipe 9 and the side surface of the deslagging box body 1 is 20 degrees (alpha =20 degrees). The upper sieve mesh 10 of the white steel sieve plate is a trapezoidal sieve mesh with a narrow upper part and a wide lower part, and the aperture is larger than the diameter of ore discharge particles of the ball mill.

A deslagging device of a ball mill in wet-type ore selection of a mine is characterized in that a deslagging box body 1 suitable for size is manufactured according to ore discharge capacity of the ball mill, the sectional area of the deslagging box body 1 under general conditions is 3 times larger than that of the ore discharge capacity of the ball mill, a Z-shaped interlayer is welded in the deslagging box body 1 and comprises a Z-shaped interlayer low surface 3, a Z-shaped interlayer side surface 5 and a Z-shaped interlayer high surface 4, a white steel sieve plate customized by the Z-shaped interlayer low surface 3 and the Z-shaped interlayer side surface 5 is selected as a white steel sieve plate, an upper narrow and a lower wide trapezoid sieve mesh is selected as a white steel sieve plate 10, and the upper aperture of the white steel sieve plate is larger than the diameter of ore discharge particles of the ball mill. The height of the white steel sieve plate (Z-shaped interlayer lower surface 3) is welded on a half position of the deslagging box body 1. Then, a gap of about 300mm is left at the first end of the deslagging box body 1, the white steel sieve plate is erected and welded (forming a Z-shaped interlayer side face 5) with the height of 200mm, the width of the white steel sieve plate is smaller than that of the deslagging box body 1, welding is facilitated, a blank area 6 with the height of 200mm multiplied by 300mm is formed, the height above the blank area 6 is about 1200mm lower than that of the deslagging box body, and a fence is formed by welding steel bars above 200mm multiplied by 300mm and serves as a Z-shaped interlayer high face 4.

Welding the position of the white steel sieve plate, installing two six-component dispersing water pipes 9 100mm upwards, wherein the distance between the two dispersing water pipes 9 is 1/4 of the width of the box body, the angle between the slag removing box body 1 and the dispersing water pipes 9 is about 15-20 degrees, and the length of the dispersing water pipes 9 is 100mm extending into the slag removing box body 1.

The deslagging box body 1 is made by adopting a common steel plate with the thickness of 8mm of A3 steel plate, the thick steel plate is not easy to deform when being made, firstly, the size of the deslagging box body 1 is determined according to the ore discharge amount and the granularity of a ball mill, for example, when the deslagging box body 1 of the MQG 2700X 3600 ball mill is made, the size of the deslagging box body 1 is 1500mm, 800mm, 700mm, and the overflow granularity of a classifier is about 48% of-200 meshes under the general condition, (one 200 mesh is 0.074 mm), if the ball mill has an expansion accident, the granularity reaches 1mm-1.5mm, so that a white steel sieve plate with the size of 2mm is selected as a sieve opening, the section of the sieve plate 10 is trapezoidal, the side entering the sieve is narrow, and the side exiting the sieve is wide, so that when the sieve hole is blocked and knocked and washed, the slag is blocked in the sieve hole and cannot be cleaned, and the blockage of the sieve can be cleaned easily. Two next 1200mm, two 770mm angle steels, the specification of angle steel is 30mm, then weld the angle steel around the position that the good height of height 300mm of the inside volume of deslagging box 1, just form a frame 2 in deslagging box 1 like this, then the blanking of white steel sieve plate, the specification is that the white steel sieve plate of length 1200mm is wide 770mm is high 8mm is welded on angle steel frame 2, two next 200mm angle steels, stand to weld in 800mm both sides of deslagging box 1 in sieve end cap, then next a white steel sieve plate of length 200mm is wide 770mm is high 8 mm. The white steel sieve plate is vertically welded on angle steel, thus forming a sieving box body with the size of 1200mm multiplied by 770mm multiplied by 200mm in height and a blank area 6 with the size of 300mm multiplied by 770mm in width multiplied by 200mm in height in the box body, a reinforcing steel bar fence 4 with the length of 270mm multiplied by 770mm in width and the distance between the reinforcing steel bar is welded on the blank area 6 with the size of 1200mm multiplied by 770mm in width multiplied by 200mm in height by 12mm, the purpose is to ensure safety, then on the other side steel plate of the deslagging box body 1, the bottom surface of the white steel sieve plate is taken as the reference, the distance with the height of 100mm is measured, a point with the distance of 200mm is measured at one end of the box body, a next point is measured by taking the point as the center, the distance of 400mm is measured, after the two points are determined, the diameter of phi 28mm is cut by plasma, then two 6 branched pipes with the length of 200mm are made into a rushing-off water pipe 9, a gap with the middle of 5mm is left in one end of a heating flat, thus the water pressure can be enough, then 6 branch pipes are inserted into phi 28 holes with flat heads facing inwards and straight heads facing outwards in parallel with the white steel screen surface, the distance between the flat heads of the flushing and dispersing water pipes 9 and the deslagging box body 1 is 100mm, the distance is favorable for flushing the screen surface, the angles of the pipe heads and the screen surface are controlled between (15 degrees to 20 degrees) and are welded on the deslagging box body 1, the flushing and dispersing water pipes 9 are directly connected by rubber pipes when the deslagging box body 1 is installed, and the flushing and dispersing water pipes 9 are too short when the angles are too large and too small and flush the screen surface too close.

No matter the lattice type ball mill or the overflow type ball mill, the ground ore pulp must pass through the device, when the ore pulp enters a white steel sieve plate of a deslagging box body 1 (a Z-shaped interlayer low surface 3 and a Z-shaped interlayer side surface 5), particles or impurities smaller than 2mm can directly flow away to enter the next process, the particles or impurities larger than 2mm are intercepted on the sieve surface, under the flushing of a flushing and dispersing water pipe 9, the impurities with light specific gravity can be flushed to one end of the white steel sieve surface by water, so that enough sieving area is reserved, when the impurities are accumulated more, a caregiver can rub away with a shovel and pour into a garbage can, if the caregiver does not timely or the ball mill has an expansion accident, the ore pulp overflows the deslagging box body 1 due to larger particles or more impurities, when the sieving area is not enough, because the Z-shaped interlayer high surface 4 of the deslagging box body 1 is higher than the Z-shaped interlayer low surface 3, the ore pulp can enter a space area 770mm wide by 300mm and 200mm wide by virtue of a grid bar fence of the Z-shaped interlayer high surface 4 and enter a space area 6 The ore pulp with larger gaps of the steel bar fences cannot be blocked, so that the ore leakage accident cannot be caused, the accident handling time is reserved for a caregiver, the sundries can be continuously removed as long as the caregiver attends the steel bar fences in time, the sundries with lighter specific gravity cannot enter the water pipe to cause blockage, the iron slag with larger specific gravity can be removed, the accumulation cannot be caused, and the equipment accident is reduced.

Referring to fig. 1, 2 and 3, the working principle is as follows: this device is installed after the ball mill is arranged the material, and feed inlet 7 and the ball mill bin outlet of this device are connected. When ore pulp enters a white steel sieve plate on the lower surface 3 of the Z-shaped interlayer, particles or impurities smaller than 2mm can directly flow to the bottom of the box and enter the next process through a discharge port 8, the particles or impurities larger than 2mm are intercepted on the white steel sieve surface, impurities with light specific gravity can be flushed to one end of the white steel sieve surface by water under the flushing of a flushing and dispersing water pipe 9, so that enough sieving area is reserved, when the impurities are accumulated more, personnel can rub the impurities with a spade and pour the impurities into a garbage can, if the nursing is not timely or a ball mill has a belly expansion accident, the ore pulp can overflow to the high surface 4 of the Z-shaped interlayer due to larger particles or more impurities, the ore pulp can enter a blank area 6 with the width of 300mm and the width of 770mm and the height of 200mm because the gaps of reinforcing steel bars are larger, the ore pulp cannot be blocked, so that an accident can not be caused, and the time for handling the nursing is reserved, as long as the caretaker takes care of in time, debris can be constantly cleared away, therefore the debris that the proportion is lighter just can not get into and cause the jam in the water pipe, and the iron slag that the proportion is great also can be cleared away, also can not pile up in box, cell body, pump pond inside, has reduced the emergence of all kinds of equipment accidents.

The above description is only for the purpose of illustrating the embodiments of the present invention, and the various illustrations should not be construed as limiting the essential contents of the present invention.

Claims

1. The deslagging device of the ball mill in wet-type separation of mines is characterized by comprising a deslagging box body (1) with an open upper surface, wherein the bottom surface of the deslagging box body (1) is provided with a discharge hole (8); a Z-shaped interlayer is arranged in the slag removal box body (1), a low surface (3) and a side surface (5) of the Z-shaped interlayer are white steel sieve plates, and a high surface (4) of the Z-shaped interlayer is a steel bar fence.

2. The deslagging device of the ball mill in wet-type separation of mines according to claim 1, wherein the deslagging box body (1) has to wash the water pipe (9).

3. The deslagging device of the ball mill in wet-type separation of mines according to claim 1 or 2, characterized in that the included angle between the water flushing and dispersing pipe (9) and the side surface of the deslagging box body (1) is 15-20 degrees.

4. The deslagging device of a ball mill in wet-type separation of mines according to claim 3, characterized in that the upper sieve mesh (10) of the white steel sieve plate is a trapezoid sieve mesh with a narrow top and a wide bottom, and the aperture is larger than the diameter of ore discharge particles of the ball mill.