Grinding ball specialized for mine

A technology for mines and grinding balls, applied in the field of special grinding balls for mines, can solve the problems of low production efficiency of alloy steel rolling wear-resistant microspheres, high chromium and manganese content in high-chromium balls, and consumption of national chromium resources, etc. Grain refinement, energy saving, good mechanical properties
CN101864533AInactive Publication Date: 2010-10-20宁国市南洋机械有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
宁国市南洋机械有限公司
Publication Date
2010-10-20
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention discloses a grinding ball specialized for a mine. The grinding ball specialized for the mine comprises the following chemical components in percentage by weight: 1.0-2.9 of C, 5.0-11.5 of Cr, 0.3-0.9 of Si, 0.4-0.8 of Mn, no more than 0.8 of W, 0.05-0.20 of Y, no more than 0.08 of S, no more than 0.08 of P and the balance Fe. In the process of casting, yttrium-base heavy rare earth copper modificator with adding amount accounting for 0.1-0.3 of the molten iron. The grinding ball specialized for the mine of the invention is smelted by using a medium frequency electric furnace and casted by using a metal mould; raw materials use high quality steel pig iron and high quality waste steel and are modified by using ferrochrome, ferromanganese and ferrosilicon; after each chemical component in the molten iron reaches the requirement of the grinding ball specialized for the mine, the yttrium-base heavy rare earth copper modificator is directly added into a foundry ladle; and then the molten iron is poured into the metal models to produce the grinding ball specialized for the mine.
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Description

technical field

[0001] The invention relates to a special grinding ball for mines, which is suitable for grinding bodies used under the conditions of wet grinding for ore dressing, such as grinding balls and grinding sections of various specifications. Background technique:

[0002] Mine special grinding ball is a kind of grinding medium used in grinding engineering. It is mainly used in the grinding engineering of ore dressing and pelletizing. The annual consumption of only one million tons in China is large. Wet method, so when the grinding ball works in the mill, the impact force is large and the corrosion is strong. In order to improve the impact resistance, corrosion resistance and wear resistance of the grinding ball, and reduce the breakage rate and consumption of the grinding ball in use, each Production enterprises and scientific research units are constantly exploring and developing new products and new processes, and have developed high-chromium alloy grinding bal...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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