Molten iron desulphurization method

A technology for desulfurization of molten iron and molten iron, applied in the field of smelting, can solve the problems such as the desulfurization effect needs to be improved, the process is not perfect, the amount of desulfurization powder used is large, and the best desulfurization effect is achieved, and the loss of slag removal is reduced, and the amount of use is small.

Inactive Publication Date: 2019-04-19
沈阳鑫颖超科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the process of the existing hot metal desulfurization station is not perfect, the amount of desulfurization powder used is relatively large, and the desulfurization effect needs to be improved

Method used

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  • Molten iron desulphurization method
  • Molten iron desulphurization method
  • Molten iron desulphurization method

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Embodiment Construction

[0010] The present invention will be described in detail below in conjunction with the examples. Seven hot metal desulfurization stations are set up, which are respectively 1#~7# hot metal desulfurization stations; 1#~3# hot metal pretreatment station process flow: the molten iron tank is hoisted to the molten iron tipping car by the crane Up——Dump the tipping car to the injection position—Temperature measurement and sampling——Confirm the amount of powder sprayed—Lower the gun, spray——Elevate and clean the spray gun—Tip over the molten iron tank and remove slag——Reset the molten iron tank ——Temperature measurement and sampling——The end point of sulfur meets the requirements of the regulations, and the dump truck is driven out——The molten iron tank is waiting to be lifted away;

[0011] In the 4#~7# molten iron pretreatment station, the crane lifts the molten iron tank to the molten iron truck—the molten iron truck drives to the pouring station to connect the iron——after connect...

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Abstract

The invention discloses a molten iron desulphurization method. The molten iron desulphurization method is characterized in that the injection amount of desulfurization powder before injection of passivated magnesium powder is reduced, according to the requirements for sulphur fed into a furnace of different steel types, different injection amounts are set, injection parameters are set for different molten iron desulphurization stations, under the combination with production practice, molten iron is left to stand for the specified time after injection, so that the full reaction of the passivated magnesium powder and the desulfurization powder which are sprayed into the molten iron with the molten iron is guaranteed, the slag removal loss is reduced, the optimal desulfurization effect is achieved, operation process parameters are controlled so that the desulfurization of the molten iron can be controlled between 0.002% and 0.010%, and the completion of a molten iron desulfurization process is realized.

Description

technical field [0001] The invention relates to the technical field of smelting, in particular to a molten iron desulfurization process. Background technique [0002] Many hot metal desulfurization stations adopt the method of combined injection of passivated magnesium powder and desulfurization powder for desulfurization, which can combine the needs of different steel types and provide multiple injection modes with different ratios of hot metal desulfurization powder to achieve the final sulfur hit rate High, the goal of reducing process losses. But the process of the existing hot metal desulfurization station is not perfect, the desulfurization powder is used in a large amount, and the desulfurization effect needs to be improved. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the purpose of this invention is to provide a kind of desulfurization effect is good, the processing method that desulfurization powder usage is less, ...

Claims

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Application Information

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IPC IPC(8): C21C1/02C21C7/064
CPCC21C1/025C21C7/0645
Inventor 俞越
Owner 沈阳鑫颖超科技有限公司
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