Manganese-silicon alloy low-calcium slag type smelting process

A technology of manganese-silicon alloy and calcium slag, which is applied in the direction of improving process efficiency, etc., can solve problems such as poor separation of slag and iron, difficulty in tapping iron and slag, and shrinking operation furnace type, so as to increase the stability of furnace conditions and solve furnace problems. Eye piercing and furnace accidents, smelting power consumption reduction effect

Active Publication Date: 2021-10-22
嘉峪关宏电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

[0006] The purpose of the present invention is to solve the problems of low-calcium slag-type production of lower electrode slag coating, slag turning in the furnace, operation furnace type reduction, difficulty in tapp

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1

[0030] Manganese silicon alloy low calcgrus smelting process, including the following steps:

[0031] Step 1: ingredient preparation and refining smelting: ingredients include manganese ore ingredients and coke ingredients, and add ingredients to the mineral heat furnace;

[0032] Step 2: Smelting control in the ore heat furnace: deep insertion electrode in the ore furnace, strengthen the electrode pressure, the electrode limit is controlled, high voltage operation, and periodic cleaning furnace; deep interpolation electrode can increase the slag iron Heat and improve the slag iron separation effect, high voltage operation can increase the secondary voltage, expand the molten pool, stabilize the electrode;

[0033] Step 3: Breaking the furnace: Broad-baked procedure, take the open-blocked eye, open the eye, the furnace is opened, the drainage is used to drain, speed up the speed, shorten the time; the ore heat furnace needs to change the furnace eye. One shot of...

Example Embodiment

[0044] Example 2

[0045] A manganese silicon alloy low calcgrus smelting process has been refined on the basis of Example 1:

[0046] (1) Manganese ore ingredients include the following ingredients by weight: 20 copies of Australian Manganese, 25 parts of Gongpon Manganese, 20 parts of South Africa, 15 high-speed and iron mines in South Africa, 12 self-slags, and 8 Dust Dust. The coke ingredients include the following components by weight of the weight: 65 parts of the particle size of 20-40 mm, 35 parts of the particle size of 10-30 mm. Carbon production is 10kg on the normal basis.

[0047] (2) The deep-discharge electrode, the electrode limit is in the upper limit position, and the pressure is increased by 20-30 mm / day, and the water furnace temperature is improved to increase the iron water temperature in the ore heat furnace to 1540 ° C or more.

[0048] (3) High voltage operation, the secondary voltage is increased from 210V to 215V.

[0049] (4) Take the flushing furnace...

Example Embodiment

[0053] Example 3

[0054] A manganese silicon alloy low calcgrus smelting process has been refined on the basis of Example 1:

[0055] (1) Manganese ore ingredients include the following components by weight of the weight: 22 Australian Manganese mines, 23 parts of Gabon manganese mines, 18 South Africa, 16 high-speed rail deposits in South Africa, 15 self-slags, and 6 Dust Dust. The coke ingredients include the following components by weight of the weight: 70 parts of chemical coke of 20-40 mm, 30 parts of chemical coke of 10-30 mm. The amount of carbon is lowered on the normal basis.

[0056] (2) The deep-discharge electrode, the electrode limit is in the upper limit position, and the pressure is increased by 30-40 mm / day, and the water furnace temperature is increased to increase the iron water temperature in the ore heat furnace to 1535 ° C or more.

[0057] (3) High voltage operation, the secondary voltage is increased from 210V to 213V.

[0058] (4) Time is used to wash th...

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Abstract

The invention discloses a manganese-silicon alloy low-calcium slag type smelting process, and relates to the technical field of iron alloy production. The technical problems of slag wrapping of a low-calcium slag type lower electrode, slag overturning in a furnace, reduction of an operation furnace type, difficulty in iron and slag tapping, poor slag and iron separation, reduction of product quality and insufficient load are solved. The manganese-silicon alloy low-calcium slag type smelting process comprises the following steps of step 1, preparing ingredients and smelting in a furnace; step 2, smelting control in a submerged arc furnace; step 3, discharging; and step 4, casting. The process has the advantages that the low-calcium slag type submerged arc furnace stably and smoothly runs, the product quality is stable, and the production index is advanced.

Description

technical field [0001] The invention relates to the technical field of ferroalloy production, more specifically to the technical field of a manganese-silicon alloy low-calcium slag-type smelting process. Background technique [0002] Manganese-silicon alloy is an alloy composed of manganese, silicon, iron, a small amount of carbon and other elements. It is a ferroalloy with a wide range of uses and a large output. Manganese-silicon alloy is a compound deoxidizer commonly used in steelmaking, and it is also a reducing agent for the production of medium and low carbon ferromanganese and the production of metal manganese by electrosilicothermal method. [0003] According to the theory of silicomanganese smelting and production practice, the slag type of slag is basically calcium slag type under normal conditions, the proportion of calcium dioxide in the slag is 20%-30%, and the furnace condition is stable when the slag basicity is controlled at 0.6-0.75 Good performance, excel...

Claims

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Application Information

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IPC IPC(8): C22C1/02C22C22/00C22B5/10C22B47/00
CPCC22C1/02C22C22/00C22B47/00C22B5/10Y02P10/20
Inventor 曾仁福闫好青冯选杰马智杨旭王先武孙伟高建鹏
Owner 嘉峪关宏电铁合金有限责任公司
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