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A special wear-resistant ball for phosphate rock and its preparation method

A technology of wear-resistant balls and phosphate rock, which is applied in the field of wear-resistant balls to achieve the effects of improving corrosion resistance, hardenability, strength and wear resistance

Active Publication Date: 2017-10-31
ANHUI RUITAI NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing ordinary wear-resistant balls cannot well meet the increasing demand for grinding, so it is necessary to find a wear-resistant ball that is super-resistant to crushing, super wear-resistant, and more suitable for the needs of phosphate rock grinding.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A special wear-resistant ball for phosphate rock proposed by the present invention, its components include by weight: C: 2.2%, Si: 1.2%, Mn: 0.5%, Cr: 8.0%, Mo: 0.2%, Ni: 1.5% , V: 0.1%, S≤0.06%, P≤0.06%, the remainder is Fe and inevitable impurities.

[0029] The present invention also proposes a method for preparing the above-mentioned special wear-resistant ball for phosphate rock, including: smelting, pouring and heat treatment.

[0030] The melting temperature is 1560°C and the pouring temperature is 1520°C.

[0031]The specific operation of the heat treatment is as follows: the wear-resistant ball blank obtained by casting is placed in an equipment with a temperature of 680 ℃, the equipment is heated to 980 ℃, and the heating time is 8h; Then tempering for 7.8h, when the diameter of the wear-resistant ball blank is ≤50mm, the quenching time is 8min, and the tempering temperature is 325℃; when the diameter of the wear-resistant ball blank is greater than 50mm, the...

Embodiment 2

[0034] A special wear-resistant ball for phosphate rock proposed by the present invention, its components by weight percentage include: C: 3.5%, Si: 0.3%, Mn: 1.5%, Cr: 11.0%, Mo: 2.0%, Ni: 0.2% , V: 1.5%, S≤0.06%, P≤0.06%, the remainder is Fe and inevitable impurities.

[0035] The present invention also proposes a method for preparing the above-mentioned special wear-resistant ball for phosphate rock, including: smelting, pouring and heat treatment.

[0036] The melting temperature is 1530°C, and the pouring temperature is 1500°C.

[0037] The specific operation of the heat treatment is as follows: the wear-resistant ball blank obtained by casting is placed in an equipment with a temperature of 720 ° C, the equipment is heated to 1000 ° C, and the heating time is 9 h; Then tempered for 8.2 hours. When the diameter of the wear-resistant ball blank is less than or equal to 50mm, the quenching time is 7 minutes and the tempering temperature is 330°C. When the diameter of the w...

Embodiment 3

[0040] A special wear-resistant ball for phosphate rock proposed by the present invention, its components by weight percentage include: C: 2.2%, Si: 0.9%, Mn: 0.5%, Cr: 11.0%, Mo: 2.0%, Ni: 1.5% , V: 0.5%, S≤0.06%, P≤0.06%, the remainder is Fe and inevitable impurities.

[0041] The present invention also proposes a method for preparing the above-mentioned special wear-resistant ball for phosphate rock, including: smelting, pouring and heat treatment.

[0042] The melting temperature is 1560°C and the pouring temperature is 1520°C.

[0043] The specific operation of the heat treatment is as follows: the wear-resistant ball blank obtained by casting is placed in an equipment with a temperature of 710 ° C, the equipment is heated to 980 ° C, and the heating time is 8 hours; Then tempered for 8.2 hours. When the diameter of the wear-resistant ball blank is less than or equal to 50mm, the quenching time is 8 minutes and the tempering temperature is 325°C. When the diameter of the...

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Abstract

The invention discloses a special wear-resistant ball for phosphate rock, and its components include: C: 2.2-3.5%, Si: 0.3-1.2%, Mn: 0.5-1.5%, Cr: 8.0-11.0%, Mo: 0.2-2.0%, Ni: 0.2-1.5%, V: 0.1-1.5%, S≤0.06%, P≤0.06%, and the balance is Fe and unavoidable impurities. The invention also discloses a preparation method of the above-mentioned wear-resistant ball special for phosphate rock, including: smelting, pouring, and heat treatment; wherein the specific operation of heat treatment is as follows: the wear-resistant ball billet obtained by casting is placed in a device with a temperature of 680-720°C, and the The equipment is heated up to 950-1000°C for 8-9 hours, then taken out and placed in quenching oil for quenching, then tempered for 7.5-8.5 hours, cooled to room temperature to obtain special wear-resistant balls for phosphate rock. The invention has the performance of super anti-breakage and super wear resistance.

Description

technical field [0001] The invention relates to the technical field of wear-resistant balls, in particular to a special wear-resistant ball for phosphate rock and a preparation method thereof. Background technique [0002] Phosphate rock is a general term for phosphate minerals that can be used economically, and is an important chemical mineral raw material. It can be used to produce phosphate fertilizers, and can also be used to produce yellow phosphorus, phosphoric acid, phosphide and other phosphates, which can be used in medicine, food, matches, dyes, sugar, ceramics, national defense and other industrial sectors. [0003] The reserves of phosphate rock resources in my country are abundant, but the reserves of high-grade phosphate rock are low. my country's phosphate rock reserves ranks second in the world, second only to Morocco and Western Sahara. my country's phosphate rock reserves have been identified as 17.6 billion tons of ore, which is converted into 10.5 billi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C37/10C21D1/18C21D5/00
Inventor 明章林李冰葛成王传银胡璇阮和平
Owner ANHUI RUITAI NEW MATERIALS TECH
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