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Anti-wear and deterioration additive for enhancing wear-resisting strength of grinding ball and using method

A wear-resistant strength and additive technology, applied in the field of casting grinding ball additives, can solve problems such as poor utilization effect and oxidation, and achieve the effects of improving comprehensive hardness and wear resistance, improving wear resistance, and stable and good use effect.

Active Publication Date: 2016-08-24
ANSTEEL GRP MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is still insufficient in improving the strength; in addition, the original invention is added in the furnace in addition, and the added elements are easy to contact with oxygen on the surface of the furnace to cause oxidation, and the utilization effect is not good.

Method used

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  • Anti-wear and deterioration additive for enhancing wear-resisting strength of grinding ball and using method

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Effect test

Embodiment 1

[0021] Before smelting, the two groups A and B are prepared according to 0.8% and 0.2% of the weight of molten iron respectively; the compound of group A is aluminum powder accounting for 20%, silicon calcium barium accounting for 20% 、 Titanium carbide accounts for 40%, rare earth ferrosilicon alloy accounts for 20%, and the B group compound is boron iron 0.5%, rare earth CeO 2 50%, the rest is calcium oxide.

[0022] In order to improve the use efficiency of additives, the present invention puts group B in the baked ladle before it is released from the furnace; in the later stage of smelting, when the chemical composition of the molten iron reaches the following indicators C: 2.2-3.0 Si: 0.7-1.4 Cr: 1.6-2.5 Mn: 1.0~1.6 After P, S<0.05; Three minutes before the molten iron is discharged, remove the impurities on the surface of the molten iron, then add the prepared group A into the furnace, and power on for 3 minutes to reach the temperature of the molten iron. Generally, the...

Embodiment 2

[0028] Before smelting, two groups of A and B were prepared according to 2% and 1% of the weight of molten iron respectively; the compound of group A was aluminum powder accounting for 20% and silicon calcium barium accounting for 10% 、 Titanium carbide accounts for 50%, rare earth ferrosilicon alloy accounts for 20%, and the described B group compound is boron iron 1%, rare earth CeO 2 60%, the rest is calcium oxide.

[0029] In order to improve the use efficiency of additives, the present invention puts group B in the baked ladle before it is released from the furnace; in the later stage of smelting, when the chemical composition of the molten iron reaches the following indicators C: 2.2-3.0 Si: 0.7-1.4 Cr: 1.6-2.5 Mn: 1.0~1.6 After P, S<0.05; 3 minutes before the molten iron is discharged, remove the impurities on the surface of the molten iron, add the prepared group A into the furnace, and power on for 3 minutes to reach the temperature of the molten iron. Generally, the ...

Embodiment 3

[0035] Before smelting, the A and B groups are prepared according to 1.5% and 0.5% of the weight of molten iron respectively; the A group of compounds is aluminum powder accounting for 25%, silicon calcium barium accounting for 15% 、 Titanium carbide accounts for 45%, rare earth ferrosilicon alloy accounts for 15%, and the B group compound is boron iron 0.8%, rare earth CeO 2 55%, the rest is calcium oxide.

[0036] In order to improve the use efficiency of additives, the present invention puts group B in the baked ladle before it is released from the furnace; in the later stage of smelting, when the chemical composition of the molten iron reaches the following indicators C: 2.2-3.0 Si: 0.7-1.4 Cr: 1.6-2.5 Mn: 1.0~1.6 After P, S<0.05; 3 minutes before the molten iron is discharged, remove the impurities on the surface of the molten iron, add the prepared group A into the furnace, and power on for 3 minutes to reach the temperature of the molten iron. Generally, the temperature...

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Abstract

The invention relates to an antiwear modification additive for enhancing abrasion strength of grinding balls and a use method. The additive is characterized by comprising a compound A and a compound B according to the following weight percentage. The compound A consists of four components: 20-30% of aluminum powder, 10-20% of silicon calcium barium, 40-50% of titanium carbide, 10-20% of rare earth ferrosilicon alloy, and the group compound B consists of three components: 0.5-1% of ferroboron, 50-60% of rare earth CeO2, and the balance calcium oxide. The use method includes: preparing the compound A and the compound B respectively according to 0.8-2% and 0.2-1% of the molten iron weight, and adding the compounds at different time. The antiwear modification additive provided by the invention has the advantages that: after using the additive, the prepared grinding balls have hardness up to HRC53-56, and have significantly improved toughness and wear resistance; and use for two months, the ball consumption is reduced to the level of 0.65kg / ton, and the use effect is stable and good.

Description

technical field [0001] The invention belongs to the technical field of casting grinding ball additives in the iron and steel metallurgy industry, and in particular relates to an anti-wear deterioration additive and an action method for enhancing the wear resistance of grinding balls. Background technique [0002] In recent years, alloy balls of various materials are basically used in the production of metallurgical wear-resistant balls at home and abroad, and they are widely used in the mineral processing production of various mines in China. The pursuit of high quality and high wear resistance is the most common research topic and attracts attention. [0003] At present, there are many kinds of alloy ball modifiers used, but the effect of improving the anti-wear performance is average, and there is no obvious advantage. For example, the addition of vanadium, titanium and rare earth alloys to other modifiers only improves the wear resistance by refining the grains, but does...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C33/08C21C1/08C22C37/10
Inventor 韩建国
Owner ANSTEEL GRP MINING CO LTD
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