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Ball Mill Liner

A ball mill liner and room temperature technology, which is applied in grain processing and other directions, can solve a lot of manpower and material resources and other problems, and achieve the effects of energy saving, simple manufacturing method and prolonging service life

Active Publication Date: 2018-03-06
SHANXI ZHONGTIAOSHAN MECHANICAL & ELECTRONICS EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, the actual use time of the liner of the ball mill is about 6-8 months, and the liner needs to be replaced when the period expires. Take the 5.03×8.5m overflow type large ball mill as an example, the weight of the liner is about 83.5 tons, and the liner needs to be replaced once. Need a lot of manpower and material resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Ball mill liner, including the following chemical composition in weight percentage: C0.54%, Si0.82%, Mn0.93%, Cr1.89%, Ni0.48%, Mo0.46%, RE0.032%, Al0.03 %, P0.023%, S0.021%, and the rest is Fe.

[0023] The preparation method of ball mill liner of the present invention comprises the following steps:

[0024] Step 1, batching: use scrap steel, ferrosilicon, ferromanganese, ferrochromium, ferronickel, ferromolybdenum, and alloy as raw materials to batch according to the ratio of the ball mill liner;

[0025] Step 2, smelting: put the prepared raw materials in step 1 into an electric arc furnace for smelting, and the smelting temperature is 1630°C;

[0026] Step 3, deployment: carry out element inspection and analysis on the molten steel in step 2, and carry out secondary proportioning of elements to the molten steel according to the inspection results;

[0027] Step 4. Refining: Put the molten steel that has passed the element inspection in step 3 into the LF refining ...

Embodiment 2

[0035] Ball mill liner, including the following chemical composition in weight percentage: C0.50%, Si0.97%, Mn1.12%, Cr1.81%, Ni0.39%, Mo0.35%, RE0.046%, Al0.034 %, P0.024%, S0.021%, and the rest is Fe.

[0036] The preparation method of ball mill liner of the present invention comprises the following steps:

[0037] Step 1, batching: use scrap steel, ferrosilicon, ferromanganese, ferrochromium, ferronickel, ferromolybdenum, and alloy as raw materials to batch according to the ratio of the ball mill liner;

[0038] Step 2, smelting: put the raw materials prepared in step 1 into an electric arc furnace for smelting, and the smelting temperature is 1640°C;

[0039] Step 3, deployment: carry out element inspection and analysis on the molten steel in step 2, and carry out secondary proportioning of elements to the molten steel according to the inspection results;

[0040] Step 4. Refining: Put the molten steel that has passed the element inspection in step 3 into the LF refining...

Embodiment 3

[0048] Ball mill liner, including the following chemical composition in weight percentage: C0.46%, Si0.82%, Mn1.15%, Cr1.95%, Ni0.45%, Mo0.32%, RE0.037%, Al0.036 %, P0.02%, S0.021%, and the rest is Fe.

[0049] The preparation method of ball mill liner of the present invention comprises the following steps:

[0050] Step 1, batching: use scrap steel, ferrosilicon, ferromanganese, ferrochromium, ferronickel, ferromolybdenum, and alloy as raw materials to batch according to the ratio of the ball mill liner;

[0051]Step 2, smelting: put the raw materials prepared in step 1 into the electric arc furnace for smelting, and the smelting temperature is 1620°C;

[0052] Step 3, deployment: carry out element inspection and analysis on the molten steel in step 2, and carry out secondary proportioning of elements to the molten steel according to the inspection results;

[0053] Step 4. Refining: Put the molten steel that has passed the element inspection in step 3 into the LF refining ...

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Abstract

The invention relates to a ball mill lining plate. The ball mill lining plate comprises the following chemical components in percentage by weight: 0.45-0.55% of C, 0.8-1.2% of Si, 0.8-1.2% of Mn, 1.7-2.0% of Cr, 0.30-0.50% of Ni, 0.20-0.50% of Mo, 0.03-0.06% of RE, 0.02-0.05% of Al, not more than 0.025% of P, not more than 0.025% of S, and the balance of Fe. The invention further provides a preparation method of the ball mill lining plate. Alloy elements and rare earth elements are optimally mixed in molten steel for LF furnace refining, so that the purity of the molten steel is improved, the refined crystalline strengthening effect on the lining plate is achieved, an obtained tempered martensite structure improves the wear resistance, the lining plate is long in service life, the impact toughness and the strength are improved, the frequency of replacing the lining plate in a factory is reduced, and the labor intensity is reduced; and raw materials of the ball mill lining plate are easy to obtain, and the ball mill lining plate is simple in preparation method, uses common waste steel and the like as the production raw materials, realizes the recycling, and effectively saves the energy.

Description

technical field [0001] The invention relates to the field of materials for mechanical equipment, in particular to a liner for a ball mill. Background technique [0002] Ball mill is the key equipment for crushing mineral materials, and it is widely used in industrial and mining enterprises. The ball mill mainly grinds the material through the extrusion and grinding forces generated between the grinding media and the contact area with the cylinder, so the impact and wear on the liner of the ball mill are relatively large, and the liner of the ball mill will appear during use. Obvious breakage and wear-through phenomena require constant replacement. Generally, the actual use time of the liner of the ball mill is about 6-8 months, and the liner needs to be replaced when the period expires. Take the 5.03×8.5m overflow type large ball mill as an example, the weight of the liner is about 83.5 tons, and the liner needs to be replaced once. It requires a lot of manpower and materi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/18C22C38/08C22C38/12C22C38/06C22C33/04C21D1/26C21D1/18B02C17/22
CPCB02C17/22C21D1/18C21D1/26C22C33/04C22C38/005C22C38/02C22C38/04C22C38/06C22C38/08C22C38/12C22C38/18
Inventor 吕仁杰赵会琴吉鹏辉
Owner SHANXI ZHONGTIAOSHAN MECHANICAL & ELECTRONICS EQUIP