Sintering method for silicon manganese alloy dust

A technology of silicon-manganese alloy and sintering method, which is applied in the field of metallurgy, can solve the problems of low strength of spherical objects, generate more dust, and affect the smelting effect, and achieve the effects of high mechanical strength, increased air permeability, and favorable heat conduction

Inactive Publication Date: 2013-02-27
广西敏诚矿业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the method used by most manganese alloy enterprises to recycle fine-grained manganese ore and dust is to use binders to make ore powder and dust into balls of a certain size, and then sinter them into balls. The binders used are bentonite, lime, etc. , these binders are easy to pulverize during high-temperature sintering, which makes the strength of the ball low. When the ball enters the submerged arc furnace and burns at high temperature, it is easier to pulverize, and more dust will be generated under strong air flow, which will affect the smelting effect.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Mix 180Kg of dust, 60Kg of coke powder, 20Kg of Mukang, and 740Kg of manganese ore powder evenly, and put them into sintering boxes, each sintering box is 100Kg, and then send it into a box-type sintering machine, and sinter at 900°C for 30 minutes to obtain large pieces Sintered agglomerates, crushed, sieved, and small pieces with a particle size of 10mm to 80mm are used as raw materials for silicon-manganese alloys. Particles smaller than 10mm are returned to the ore and re-sintered to make agglomerates.

Embodiment 2

[0023] Mix 200Kg of dust, 70Kg of coke powder, 30Kg of Mukang, and 700Kg of manganese ore powder evenly, and put them into a sintering box, each sintering box is 100Kg, and then send it into a box-type sintering machine, and sinter at 900°C for 30 minutes to obtain a large block Sintered agglomerates, crushed, sieved, and small pieces with a particle size of 10mm to 80mm are used as raw materials for silicon-manganese alloys. Particles smaller than 10mm are returned to the ore and re-sintered to make agglomerates.

Embodiment 3

[0025] Mix 200Kg of dust, 80Kg of coke powder, 20Kg of peanut shell powder, and 700Kg of manganese ore powder evenly, and put them into a sintering box. Obtain a large sintered block, crush it, sieve it, and use it as a raw material for the silicon-manganese alloy. Particles smaller than 10 mm are returned to the ore and re-sintered to form a block.

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Abstract

The invention provides a sintering method for silicon manganese alloy dust. According to the method, high temperature resistant coke powder used as a sintering adhesive of manganese mineral powder and dust and a plant fiber serving as combustion improver are sintered at the temperature of 800-1,200 DEG C to obtain massive porous sintered products. The finished product has high mechanical strength, the situations of dusting in the sintering process and massive dust generation in the melting process can be avoided. The sintering method is a good method for treating dust and fine mineral powder in manganese plants, and is low in production cost and high in treatment quality.

Description

technical field [0001] The invention relates to a sintering method of silicon-manganese alloy dust, which belongs to the field of metallurgy, and in particular relates to a sintering recycling method of fine ore powder and dust in the smelting process of manganese and manganese alloys. Background technique [0002] Manganese and manganese alloys have certain requirements on the particle size of various raw materials in the smelting process. If the particle size of various raw materials is too small, the gas permeability will be affected during the smelting process, which will affect the heat transfer process, resulting in incomplete chemical reactions in the smelting process. . If the particle size of the raw material is too small, it will cause a lot of dust under the strong air flow in the smelting furnace, which will not only cause environmental pollution, but also cause loss of raw materials. During the smelting process of manganese and manganese alloys, a large amount ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/16C22B1/248C22B1/243C22B47/00C22B4/06
Inventor 林晨谢力穆元光蔡军曾玉金
Owner 广西敏诚矿业股份有限公司
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