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Mine wet mill liner and making method thereof

A wet method and lining technology, applied in the field of wear-resistant metal materials, can solve the problems of poor corrosion resistance and inapplicability of the lining of the tube mill, and achieve the advantages of reducing the frequency of replacing the lining, improving the service life and reducing the labor intensity. Effect

Inactive Publication Date: 2014-08-20
安徽新马铸造科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the tube mill liner of the invention has poor corrosion resistance and is not suitable for wet mills in metallurgical mines

Method used

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  • Mine wet mill liner and making method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Smelting: Add clean and dry ordinary steel scrap, pig iron, stainless steel scrap, ferromolybdenum, nickel plate, and carbon-increasing waste electrodes into the smelting furnace, heat and melt, raise the temperature to 1550°C, and add them 10 minutes before tapping The preheated ferromanganese and ferrosilicon are subjected to precipitation deoxidation, the composition is adjusted, and then the preheated cobalt plate is added. When the temperature of the molten iron reaches 1550°C, the method of deep insertion of aluminum wire is used for diffusion deoxidation;

[0025] (2) Pouring: Crush the rare earth modifier into small pieces with a particle size of less than 45mm, and after drying below 200°C, place the package on the bottom of the ladle with iron sheet or tin foil paper, and use the method of pouring into the ladle to modify the molten steel. Then pour the molten steel into the steel ingot mold, the pouring temperature of the molten steel is 1460°C, the pourin...

Embodiment 2

[0029] (1) Smelting: Add clean and dry ordinary steel scrap, pig iron, stainless steel scrap, ferromanganese, ferromolybdenum, nickel plate, and carbon-increasing waste electrodes into the smelting furnace, heat and melt, and raise the temperature to 1300°C after adjusting the composition to pass , add ferrosilicon for precipitation deoxidation, 5 minutes before tapping the iron, adopt the method of deep insertion of aluminum wire for diffusion deoxidation, and then tap the iron;

[0030] (2) Pouring: Break the modified rare earth into small pieces with a particle size of less than 45mm, and after drying at 200°C, place the package on the bottom of the ladle with iron sheet or tin foil paper, and use the method of pouring into the ladle to modify the molten steel. Then pour the molten steel into the ingot mold, the pouring temperature of the molten steel is 1440°C, the pouring is first slow, medium fast, and then thin, and the steel ingot is poured by the bottom pour method;

...

Embodiment 3

[0034](1) Smelting: Add clean and dry ordinary steel scrap, pig iron, stainless steel scrap, ferromanganese, ferromolybdenum, nickel plate, and carbon-increasing waste electrodes into the smelting furnace, heat and melt, and raise the temperature to 1350°C after adjusting the composition to pass , adding preheated ferrosilicon for precipitation deoxidation, 5 minutes before tapping the iron, use the method of deep insertion of aluminum wire for diffusion deoxidation, and then tap the iron;

[0035] (2) Pouring: Break the modified rare earth into small pieces with a particle size of less than 45mm, and after drying at 200°C, place the package on the bottom of the ladle with iron sheet or tin foil paper, and use the method of pouring into the ladle to modify the molten steel. Then pour the molten steel into the ingot mold, the pouring temperature of the molten steel is 1450°C, the pouring is first slow, medium fast, and then thin, and the steel ingot is poured by the bottom pour ...

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Abstract

The invention relates to the technical field of wear resistant metal materials, and discloses a mine wet mill liner and a making method thereof. The liner comprises 0.10-0.3wt% of C, 0.2-0.6wt% of Si, 0.3-1wt% of Mn, 7-10wt% of Cr, 0.7-1wt% of Mo, 1.5-2wt% of Ni, 0.1-0.18wt% of Ti, 0.005-0.03wt% of S, 0.005-0.03wt% of P, 0.01-0.025wt% of RE, and the balance Fe. The mine wet mill liner has the advantages of very long service life, improved wear resistance, substantially improved impact toughness, meeting of the impact resistance of a mine wet mill liner, very high strength and hardness, reduction of the liner replacement frequency of a factory, labor intensity reduction, easily available raw materials, simple preparation method and effective energy saving.

Description

technical field [0001] The invention relates to the technical field of wear-resistant metal materials, in particular to a mine wet mill liner and a preparation method thereof. Background technique [0002] Metallurgical and mining wet mill liners are used in harsh working conditions, subject to corrosion, impact and wear. Many studies have pointed out that in a wet state, especially in a corrosive medium, the wear rate of the same material is several times that of a dry state. Wet corrosive wear is not a superposition of pure wear and pure corrosion, but a complex process with interactive acceleration. According to the analysis, 85% of the failure causes of grinding and crushing equipment are due to wear, 50% of which are caused by abrasive wear. Abrasive wear is the most common and important cause of wear failure. Wear is a systemic property that depends on the interaction of all components and materials involved in wear under various loads. [0003] At present, most wet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/50C22C33/04C21D1/18
CPCY02P10/20
Inventor 包玮
Owner 安徽新马铸造科技有限公司
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