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Furnace dephosphorus rod agent for electric furnace molten steel

A technology for internal dephosphorization rod agent and molten steel furnace, which is applied to hearth furnaces, furnaces, furnace types, etc., can solve the problems of harsh environment, dangerous operation, serious pollution, etc., and achieves the effect of simple preparation and low price

Inactive Publication Date: 2007-07-18
刘玉满
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This dephosphorization method: 1. The environment is harsh, the labor intensity of the workers is high, and the operation is dangerous; 2. The pollution is serious; 3. The cost is high; 4. The dephosphorization effect is poor; Warm up and refine again

Method used

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  • Furnace dephosphorus rod agent for electric furnace molten steel

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Embodiment Construction

[0020] The raw materials used in the formula of the present invention are all commercialized powdery (30-200 mesh) materials.

[0021] To produce 1000kg of this stick, weigh: 640kg of iron oxide powder, 150kg of magnesia powder, 100kg of calcium carbonate powder, 70kg of clay powder, 20kg of boric acid, 20kg of a starch, mix through a 30-mesh sieve, add 5% of water, and press Domestic 0.5t / h, 1t / h, 5t / h, 10t / h power frequency or intermediate frequency electric furnace specifications can be made into bars with a weight of 10kg / piece, 20kg / piece, and 30kg / piece, and air-dried for later use. The consumption of rod is 1-2% of the weight of molten steel.

[0022] When in use, when the temperature of the molten steel in the furnace is 1350-1450°C, preheat the dephosphorization rod at the furnace mouth to about 200°C and then insert it into the molten steel, let it melt slowly naturally and diffuse in the boiling molten steel to remove phosphorus After dephosphorization, the phosphi...

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Abstract

The present invention discloses one kind of molten steel dephosphorizing rod for use in electric furnace. The dephosphorizing rod is made with iron oxide powder, forsterite powder, calcium carbonate powder, clay powder, boric acid, starch and water in certain weight proportion and through mixing and molding to form hollow rods of different sizes. The present invention has the advantages of easy use, high dephosphorizing effect, low production cost, etc.

Description

technical field [0001] The invention relates to a molten steel dephosphorization agent, in particular to an electric furnace molten steel dephosphorization rod agent. Background technique [0002] At present, the dephosphorization of molten steel in the international foundry industry is carried out in the ladle. The dephosphorization agent is a powder mixture. When using it, it is first placed at the bottom of the ladle. After the molten steel is washed into the ladle, it is stirred mechanically or manually. This dephosphorization method: 1. The environment is harsh, the labor intensity of the workers is high, and the operation is dangerous; 2. The pollution is serious; 3. The cost is high; 4. The dephosphorization effect is poor; Warm up and refine again. Contents of the invention [0003] The present invention discloses a pollution-free in-furnace dephosphorization stick agent for electric furnace molten steel that is easy, safe, clean and easy to operate, has good deph...

Claims

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Application Information

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IPC IPC(8): C21C7/064B07B1/00B28B1/04F26B3/00
Inventor 刘玉满刘翔
Owner 刘玉满
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