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Method for preparing silicomanganese with high silicon

A high-silicon-silicon-manganese alloy and mixture technology, applied in the field of metal smelting, can solve the problems of difficult production, high production cost, and high raw material requirements, and achieve the effects of high grade rate, lower cost, and low power consumption

Inactive Publication Date: 2015-12-02
云南文山斗南锰业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, high-silicon-silicon-manganese production has problems such as high requirements for raw materials, high production costs, difficult operation, and relatively difficult production.

Method used

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  • Method for preparing silicomanganese with high silicon
  • Method for preparing silicomanganese with high silicon
  • Method for preparing silicomanganese with high silicon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] In this embodiment, ferrosilicon is used as the silicon-containing raw material, and silicon-manganese water-quenched slag is used as the covering agent to detect the influence of the covering agent on the recovery rate of different elements in the alloy, the recovery rate of the alloy, and the smelting conditions.

[0043] 1. Experimental method:

[0044] The experimental group used silicomanganese water quenching slag as the covering agent, and the control group did not add covering agent, and carried out smelting. The specific method is as follows:

[0045] (1) 40Kg of silicomanganese (manganese 66.38%, silicon 16.41) is smelted by submerged arc furnace to obtain liquid silicomanganese alloy;

[0046](2) Utilize the intermediate frequency furnace to smelt 13Kg of ferrosilicon (0.4% manganese, 70% silicon), wherein, when the ferrosilicon turns red, the experimental group adds 5Kg of silicon-manganese water quenching slag for smelting to obtain liquid ferrosilicon allo...

Embodiment 2

[0051] In this embodiment, ferrosilicon is used as the silicon-containing raw material, silicon-manganese water-quenched slag and carbon-manganese dry slag are respectively used as covering agents, and the recovery rate of different elements in the alloy, the recovery rate of the alloy, and the change of phosphorus content are detected.

[0052] 1. Experimental method:

[0053] The first group uses silicon-manganese water-quenched slag as the covering agent, and the second group uses carbon-manganese dry slag as the covering agent for smelting. The specific methods are as follows:

[0054] (1) Utilize submerged arc furnace to smelt silicon-manganese and carbon-manganese, wherein, the addition of silicon-manganese and carbon-manganese is shown in Table 2, to obtain liquid silicon-manganese alloy;

[0055] (2) Utilize the industrial frequency furnace to smelt ferrosilicon, and add covering agent to smelt together when it turns red, wherein, the addition amount of ferrosilicon an...

Embodiment 3

[0061] In this embodiment, industrial silicon is used as the silicon-containing raw material to detect the recovery rate of silicon element in industrial silicon and the recovery rate of each element in the alloy;

[0062] 1. Experimental method:

[0063] (1) Utilize submerged arc furnace to smelt silicon-manganese and carbon-manganese, wherein, the addition of silicon-manganese and carbon-manganese is shown in Table 3, to obtain liquid silicon-manganese alloy;

[0064] (2) Utilize the industrial frequency furnace to smelt industrial silicon, and add silicomanganese water-quenched slag to smelt together when it turns red, wherein, the addition amount of industrial silicon and silicomanganese-manganese water-quenched slag is shown in Table 2 to obtain liquid ferrosilicon alloy;

[0065] (3) Add the liquid silicon manganese alloy into the industrial frequency furnace, mix it with the liquid silicon ferrosilicon alloy, and remelt it at 1650 degrees Celsius to obtain the high sili...

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Abstract

The invention discloses a method for preparing silicomanganese with high silicon. The method comprises the following steps: smelting manganese-containing raw materials for the first time to obtain liquid non-standard silicomanganese; smelting silicone-containing raw materials and a covering agent for the second time to obtain a liquid silicon mixture; alloying the liquid non-standard silicomanganese and the liquid silicon mixture to obtain the silicomanganese with high silicon. According to the method, the perrin process is carried out to smelt the silicomanganese with high silicon, and a certain of silicon-containing raw materials and reasonable covering agent are added to the manganese-containing raw materials, thus solving the problems in the prior art that the conditions of a furnace for producing the silicomanganese with high silicon by the one-step method are difficult to control, the coke consumption is high, the electricity consumption is high, and the grade rate is low.

Description

technical field [0001] The invention relates to the field of metal smelting, in particular to a method for preparing a high-silicon-silicon-manganese alloy. Background technique [0002] At present, ferroalloy products are affected by the iron and steel industry and the country's macroeconomic conditions, and more than 90% of the enterprises are in a state of huge losses. In this way, improving production efficiency and reducing production costs are important tasks that the iron and steel industry needs to solve. In the prior art, high-silicon-silicon-manganese production has problems such as high requirements for raw materials, high production costs, difficult operation, and relatively difficult production. [0003] Therefore, the method for preparing high-silicon-silicon-manganese alloys needs to be improved. Contents of the invention [0004] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B4/06
Inventor 邢涛屠章云刘招俊蔡德鸿杨选韦祖林
Owner 云南文山斗南锰业股份有限公司
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