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Anti-caking roasting method of mixed rare earth ore

A mixed rare earth and anti-caking technology, which is applied in the field of ore smelting, can solve problems such as unsuitable industrial scale production, and achieve the effects of convenient industrial scale, reasonable design and easy operation.

Inactive Publication Date: 2012-04-11
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The present invention aims at a series of problems such as serious agglomeration and scarring existing in the existing ore smelting and roasting methods, and the existing solutions are not suitable for industrial scale-up production, and proposes a mixed rare earth ore that is easy to operate, reasonable in design, and conducive to industrial production Anti-caking roasting method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Put 5g of ore powder, 1.5g of MgO and 10 steel balls with a diameter of 5mm into the tube furnace, start the motor to drive the tube furnace to work, and roast at 650°C for 3 hours.

Embodiment 2

[0027] 10g mineral powder, 2.5gNa 2 CO 3 And 4 steel balls with a diameter of 50 mm are put into the tube furnace, the motor is started to drive the tube furnace to start working, and the tube furnace is fired at a temperature of 700° C. for 5 hours.

Embodiment 3

[0029] Put 5g of mineral powder, 2g of MgO and 8 steel balls with a diameter of 20mm into the tube furnace, start the motor to drive the tube furnace to start working, and roast at a temperature of 850°C for 1 hour.

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Abstract

The invention relates to the technical field of ore smelting, and in particular relates to a roasting method which is used for preventing ore powder from caking in the mixed rare earth ore smelting process and is easy to industrially amplify. According to the method, a material can be prevented from caking through adding a grinding body in a roasting system to roast together with the material, a block mass to be sintered and conglobated is rapidly broken, and a medium is updated on the surface of ore particles. The method of the invention is reasonable in design, is easy to operate and convenient for industrial amplification.

Description

technical field [0001] The invention belongs to the technical field of ore smelting, and in particular relates to a roasting method which prevents ore powder agglomeration during the smelting process of mixed rare earth ore and is easy for industrial scale-up. Background technique [0002] In my country's iron and steelmaking industry, it is most common to roast ore before smelting. Roasting is a reaction process of solid materials at high temperature without melting, which can include oxidation, pyrolysis, reduction, halogenation, etc., and is usually used in roasting inorganic chemical and metallurgical industries. There are two types of roasting process with additives and without additives. The purpose of roasting is to remove free water, crystal water, CO 2 And sulfur, can loosen the hard ore, and improve the reducibility of iron oxides during iron smelting. [0003] Roasting without additives, also known as calcination, can be divided into: ① decompose ore, such as l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/02C22B59/00
Inventor 赵君梅杨良嵘邢慧芳刘会洲
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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