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Molten steel purifying slag agent produced by blast furnace fusion method

A melting method and blast furnace technology, applied in the field of purifiers, can solve the problems of high production costs, achieve the effects of reducing steel production costs, prolonging service life, and saving metal aluminum

Inactive Publication Date: 2010-05-19
于世发
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the commonly used method for refining molten steel is to use precious metals such as magnesium and aluminum for desulfurization and deoxidation. This method has the disadvantage of high production cost

Method used

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Examples

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Embodiment Construction

[0022] The molten steel slag purification agent produced by the blast furnace melting method is made of the following components and proportions by weight:

[0023] One or a combination of ferrite or bauxite: 350-750

[0024] Calcium carbonate: 490-890

[0025] All iron: 290-630

[0026] Low silicon flux: one or a combination of iron oxide and calcium fluoride, 0.5-10% of the total

[0027] Waste fly ash in industry: 0.5-10% of the total

[0028] Mineralizers: basic oxides magnesium oxide or calcium oxide; acidic oxide metal manganese ores; 0.5-10% of the total

[0029] Filler: Al2O3, insufficient supplementary ingredients; 0.5-10% of the total

[0030] Fuel: coke, S≤0.2%, 340-900Kg / ton slag agent, 320-1700Kg / ton iron

[0031] The preparation method of the molten steel purifying slag agent produced by the blast furnace melting method is:

[0032] 1) Feed according to the above-mentioned composition ratio requirements, and set aside;

[0033] 2) Put the fuel coke into th...

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Abstract

The invention discloses a liquid steel refine process clarifier for ladle and bakie especially a molten steel purifying slag agent, which comprises the following steps: choosing bauxite or alumina, calcium carbonate, full iron, low silicon flux, coal ash of waste and mineralization agent as raw material; igniting with coke in high furnace; burning; adding with batch; repeating; forming circle product; setting melting temperature at 1370-1770 deg.c; taping at the state of fusion; annealing with order advance vessel; cooling with semi-drying method; stewing; bruising; rough destroying; middle destroying; thin destroying. The cost of this slag agent is low, which saves a good deal of aluminum magnesium metal.

Description

technical field [0001] The invention relates to a cleaning agent for molten steel refining treatment of ladles and tundishes, in particular to a molten steel cleaning slag agent produced by a blast furnace melting method. Background technique [0002] In the prior art, the common method for refining molten steel is to use precious metals such as magnesium and aluminum for desulfurization and deoxidation. This method has the disadvantage of high production cost. Contents of the invention [0003] The purpose of the present invention is to provide a molten steel purification slag agent produced by the blast furnace melting method. The slag agent is low in production cost, has good effects on desulfurization, deoxidation, degassing, and removal of impurities in molten steel, and saves a large amount of metal magnesium and aluminum. High-silicon cast iron and ferrosilicon alloy by-products can be produced during the smelting process. [0004] In order to achieve the above obj...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C7/076C21B5/04
CPCY02P10/20
Inventor 于世发
Owner 于世发
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