A kind of ceramic-based media stirring mill and grinding method thereof

A ceramic-based and medium-based technology, which is applied in the field of ceramic-based medium-stirred mills and their grinding, can solve problems such as unfavorable sorting operations, insufficient effective specific surface area, and easy deformation of steel balls, so as to facilitate the start-up of the mill and solve the problems. Difficulty in starting, effect of reducing media consumption

Active Publication Date: 2022-05-27
辽宁东大矿冶工程技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the grinding media used in existing stirring mills are steel balls, which have the problems of large mill load, easy deformation of steel balls, insufficient effective specific surface area, and low grinding efficiency; ceramic media are also used as substitutes, but there is no Correspondingly adjust other structural components of the stirring mill. Although the grinding cost is controlled, the particle size composition of the grinding product is relatively coarse, which is not conducive to the subsequent sorting operation. If the particle size of the qualified product is controlled, the mill treatment needs to be reduced. ability
[0005] Moreover, although the existing ceramic media have the advantages of strong wear resistance, high hardness, and good dimensional stability, the density of the media is small, and the grinding effect is affected

Method used

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  • A kind of ceramic-based media stirring mill and grinding method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Design a 280kw ceramic base media stirring mill for grinding iron coarse concentrate.

[0064] The ceramic-based media stirring mill, the structure diagram is shown in figure 1 , including a cylinder body 5, a stirring device and a ceramic base medium 10; the cylinder body 5 forms a grinding cavity, a grinding ore feeding port 7 is arranged below the cylinder body 5, a grinding overflow port 4 is arranged above the cylinder body 5, and the grinding cavity A stirring device is provided inside, and the stirring device includes a high-torque motor 1, a reducer 2, a screw agitator and a coupling 11; the screw agitator includes a screw stirring shaft 8 and a screw stirring blade 9 provided on the screw stirring shaft 8; high torque The motor 1 is connected with the reducer 2, the reducer 2 is connected with the screw shaft 8 of the screw agitator through the coupling 11, and the grinding cavity is filled with the ceramic base medium 10 through the grinding medium supplementa...

Embodiment 2

[0070] A kind of ceramic base medium stirring mill, its structure is the same as that of embodiment 1, and the difference is:

[0071] In this embodiment, the ceramic-based medium is a ceramic-metal composite ball, and by mass ratio, the ceramic content is 80%, and the metal content is 20%. The metal is preferably alloy steel.

[0072] For the ceramic-based medium added in this example, the percentage of the ceramic-based medium of each size in the total mass of balls used is:

[0073] The diameter of 20~25mm ceramic metal composite ball is 45%;

[0074] The diameter of 14~17mm ceramic metal composite ball is 35%;

[0075] The diameter is 8-10mm ceramic metal composite ball 20%.

[0076] A grinding method, using the ceramic-based media stirring mill of the present embodiment, includes the following steps:

[0077] (1) Configure the minerals to be ground into mineral pulp to be ground, pass the mineral pulp to be ground into the grinding chamber, and put the following three...

Embodiment 3

[0082] A kind of ceramic base medium stirring mill, its structure is the same as that of embodiment 1, and the difference is:

[0083] In this embodiment, the ceramic-based medium is a ceramic-metal composite ball, and by mass ratio, the ceramic content is 50%, and the metal content is 50%. The metal is preferably alloy steel.

[0084] For the ceramic-based medium added in this example, the percentage of the ceramic-based medium of each size in the total mass of balls used is:

[0085] The diameter of 20~25mm ceramic metal composite ball is 40%;

[0086] The diameter of 14~17mm ceramic metal composite ball is 40%;

[0087] The diameter is 8-10mm ceramic metal composite ball 20%.

[0088] A grinding method, using the ceramic-based media stirring mill of the present embodiment, includes the following steps:

[0089] (1) Configure the minerals to be ground into mineral pulp to be ground, pass the mineral pulp to be ground into the grinding chamber, and put the following three...

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Abstract

The invention discloses a ceramic-based medium stirring mill and a grinding method thereof, which belong to the field of grinding. The ceramic-based medium agitated mill includes a cylinder body forming a grinding chamber, which is provided with a grinding feed port and a grinding overflow port, and a stirring device is arranged in the grinding chamber, and the stirring device includes a motor, a reducer, a screw Agitator and coupling; the motor is connected to the reducer, and the reducer is connected to the spiral agitator through the coupling. The spiral agitator includes a spiral stirring shaft and a spiral stirring blade set on the spiral stirring shaft; the grinding chamber is filled with ceramic medium. The ceramic-based media is a mixture of three different sizes of ceramic-based media. Set the pitch of the helix of the helical stirring blade in the agitating mill, set the helical speed, and control the operation of the agitating mill to maintain an operating state with a small energy density and a large specific surface area of ​​the medium. The ore grinding method adopts the above-mentioned ceramic-based medium-stirred mill, which has the advantages of high-efficiency grinding, low grinding cost, high grinding fineness and uniformity.

Description

technical field [0001] The invention relates to the technical field of ore grinding, in particular to a ceramic-based medium stirring mill and a ore grinding method. Background technique [0002] As a kind of high-efficiency and energy-saving grinding equipment, stirring mill has been widely used in the grinding operation of ore dressing plants, especially the fine grinding and ultra-fine grinding operations of iron ore, copper ore, lead-zinc ore, gold mine and other ore dressing plants. It mainly uses the stirring device to make the grinding medium move the impact, shearing and grinding effects, thereby crushing the material. The structure of the stirring mill is vertical installation, and the top part is a high-torque motor, which drives the reducer to rotate at the same time. Adjust the mill to a suitable rotation speed, the reducer drives the screw stirring shaft of the mill to rotate, and the kinetic energy is transmitted to the grinding medium through the stirring shaf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B02C17/16B02C17/20
CPCB02C17/16B02C17/163B02C17/20
Inventor 王绍兴吴楠郑冰清李俊鹏
Owner 辽宁东大矿冶工程技术有限公司
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