Method for producing low-carbon high-silicon-manganese-silicon alloy by using manganese-containing industrial waste slag two-step method

A technology of industrial waste slag and manganese-silicon alloy, which is applied in the direction of improving process efficiency and so on

Active Publication Date: 2016-04-06
广西铁合金有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the silicon-manganese production technology at home and abroad, there is no method of using manganese-silicon alloy slag to produce low-carbon high-silicon-manganese-silicon alloy

Method used

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  • Method for producing low-carbon high-silicon-manganese-silicon alloy by using manganese-containing industrial waste slag two-step method
  • Method for producing low-carbon high-silicon-manganese-silicon alloy by using manganese-containing industrial waste slag two-step method
  • Method for producing low-carbon high-silicon-manganese-silicon alloy by using manganese-containing industrial waste slag two-step method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1) In the manganese-silicon submerged arc furnace, 100 parts of lump ore, 150 parts of Brazilian ore, 70 parts of sintered ore, 120 parts of West Asian ore, 150 parts of manganese-rich slag, 140 parts of coke, 80 parts of silica, 10 parts of dolomite, The mixture of 10 parts of fluorite is used as raw material for smelting, and the smelting temperature is 1500°C to obtain silicon-manganese alloy and silicon-manganese alloy slag;

[0019] 2) In a low-carbon high-silicon-manganese-silicon alloy furnace, use 140 parts of the silicon-manganese alloy slag, 80 parts of Australian lump ore, 150 parts of Siberian Australian express ore, 120 parts of manganese-rich slag, 1700 parts of silica, and 12 parts of dolomite , 60 parts of fluorite and 200 parts of coke are used as raw materials for smelting at a temperature of 1550°C to obtain a low-carbon high-silicon-manganese-silicon alloy.

[0020] Step 1) The composition of the obtained silicon-manganese alloy and silicon-manganese...

Embodiment 2

[0025] 1) In the manganese-silicon submerged arc furnace, 120 parts of lump ore, 150 parts of Brazilian ore, 65 parts of sintered ore, 110 parts of West Asian ore, 150 parts of manganese-rich slag, 150 parts of coke, 80 parts of silica, 12 parts of dolomite, The mixture of 10 parts of fluorite is used as raw material for smelting, and the smelting temperature is 1550°C to obtain silicon-manganese alloy and silicon-manganese alloy slag;

[0026] 2) In a low-carbon high-silicon-manganese-silicon alloy furnace, use 130 parts of the silicon-manganese alloy slag, 75 parts of Australian lump ore, 180 parts of Siberian Australian express ore, 1200 parts of manganese-rich slag, 180 parts of silica, and 10 parts of dolomite , 60 parts of fluorspar and 2000 parts of coke are used as raw materials for smelting, and the smelting temperature is 1600 ° C to obtain a low-carbon high-silicon-manganese-silicon alloy.

[0027] Step 1) The composition of the obtained silicon-manganese alloy and ...

Embodiment 3

[0032] 1) In the manganese-silicon submerged arc furnace, 110 parts of lump ore, 160 parts of Brazilian ore, 70 parts of sintered ore, 110 parts of West Asian ore, 150 parts of manganese-rich slag, 145 parts of coke, 75 parts of silica, 10 parts of dolomite, A mixture of 12 parts of fluorite is used as raw material for smelting, and the smelting temperature is 1600°C to obtain silicon-manganese alloy and silicon-manganese alloy slag;

[0033] 2) In a low-carbon high-silicon-manganese-silicon alloy furnace, use 130 parts of the silicon-manganese alloy slag, 70-80 parts of Australian lump ore, 170 parts of Siberian Australian express ore, 130 parts of manganese-rich slag, 175 parts of silica, dolomite 10=parts, 55 parts of fluorite, and 210 parts of coke are used as raw materials for smelting, and the smelting temperature is 1650°C to obtain a low-carbon high-silicon-manganese-silicon alloy.

[0034] Step 1) The composition of the obtained silicon-manganese alloy and silicon-man...

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Abstract

The invention belongs to the technical field of manganese-silicon alloy production, and particularly relates to a method for producing a low-carbon high-silicon manganese-silicon alloy from manganese-containing industrial waste slag through a two-step method. The method comprises the following steps: 1) smelting a mixture of first manganese ores, silica, dolomite, fluorite and coke used as raw materials in a manganese / silicon ore heating furnace at 1450-1600 DEG C, thus obtaining a silicon-manganese alloy and silicon-manganese alloy slag; and 2) smelting the silicon-manganese alloy slag, second manganese ores, silica, dolomite, fluorite and coke used as raw materials in a low-carbon high-silicon manganese-silicon alloy furnace at 1550-1650 DEG C, thus obtaining the low-carbon high-silicon manganese-silicon alloy. The process has obvious energy saving and emission reduction effect; the comprehensive recovery rate of manganese is up to 95% or above, and the comprehensive utilization rate of silicon can be up to 99%; and the consumption of silica and manganese ore resources can be reduced.

Description

technical field [0001] The invention belongs to the technical field of manganese-silicon alloy production, and in particular relates to a method for producing low-carbon high-silicon-manganese-silicon alloy by using manganese-containing industrial waste residues in a two-step process. Background technique [0002] The silico-manganese waste slag produced by traditional manganese-silicon alloy smelting contains 10-12% Mn, which not only causes a huge waste of manganese resources, but also sells the water-quenched slag of silico-manganese to cement plants because of the high manganese content that affects the quality of cement. The unwelcome and piled up metallurgical industry waste needs to find a green outlet. [0003] At present, the production methods of low-carbon high-silicon-manganese-silicon alloy mainly include: 1. The method of producing manganese-silicon alloy with medium and low-carbon ferromanganese smelting slag; 2. The production of low-carbon high-silicon-manga...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B4/06
CPCY02P10/20
Inventor 黄海胜陈洪钟耀球陈成超李宏志
Owner 广西铁合金有限责任公司
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