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Process for digesting bonded steel of steelmaking casting slag ladle

A slag pot and process technology, which is applied in the treatment field of casting residual slag sticking pot to achieve the effect of improving the utilization rate

Inactive Publication Date: 2013-04-10
XINJIANG BAYI IRON & STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to: eliminate the process of steel-making and casting slag tank sticking steel, solve the problem of interoperability between converter and refining casting slag tank, and provide technical services for energy saving and emission reduction of enterprises

Method used

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  • Process for digesting bonded steel of steelmaking casting slag ladle
  • Process for digesting bonded steel of steelmaking casting slag ladle
  • Process for digesting bonded steel of steelmaking casting slag ladle

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Embodiment

[0024] 1) Equipment conditions: 3 converters with 120 tons top and bottom auxiliary blowing, 3 LF refining furnaces, 1 set of RH vacuum refining furnace, need 21 15m 3 However, there are only 12 slag tanks that are actually equipped with turnover, and the turnover of slag tanks is seriously insufficient.

[0025] 2) For the slag tank of the converter, use a gas atomization spraying device to spray the anti-sticking slag agent. The dosage is 0.08kg per ton of slag, spray for 7 minutes, and have a thickness of 10mm.

[0026] 3) For the slag tank filled with liquid steel slag, it is treated by hot pouring or upper drum slag treatment; the drum slag treatment is mechanized automatic control operation equipment to complete the tipping of the slag tank, and pour the liquid steel slag in the tank into the drum of the drum slag equipment body Inside (similar to the principle of a drum washing machine), it automatically completes the process of pumping and crushing liquid steel slag; a...

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Abstract

The invention provides a process for digesting bonded steel of a steelmaking casting slag ladle. The process comprises the steps of: with a 120-Ton converter device as an example, for a slag ladle of a converter, by adopting a gas atomizing spraying device, coating an anti-bonded-slag agent, wherein the consumption is 0.03-0.08kg per ton slag, the spraying time is 3-10min, the spraying thickness is 5-15mm, and slag is to be loaded; for the slag ladle filled with molten steel slag, thermally spilling or treating roller slag, wherein the automatic operation is adopted in roller slag and manual operation is adopted in thermal spilling, and the time is 5-45min; when the thickness of a bonded slag film on the inner wall of the slag ladle is 5-50mm and the thickness of a bonded slag film on the bottom of the slag ladle is 30-50mm, ending the treatment; and directly loading refining casting slag in the slag ladle with the film on the inner wall to prevent molten steel from bonding the slag ladle, so as to play a role in blocking the erosion effect of the refining casting molten steel and steel slag to the ladle wall. Meanwhile, the utilization rate of the slag ladle is increased.

Description

technical field [0001] The invention relates to the treatment technology of steel slag, especially for the treatment of residual casting slag sticking to pots. The method is simple to operate and very effective, and has an important demonstration effect. Background technique [0002] In steelworks, a large amount of steel slag is produced in each process every day, including converter slag, desulfurization slag, and casting slag. Among them, the treatment of refining furnace casting slag is the most difficult, and the industry and peer companies have no good methods. When there is a lot of casting slag, the molten steel and the cast steel in the inner cavity of the slag pot are melted and bonded together, making it difficult to turn over the pot. The tight turnover of tanks increases costs, which is a problem plaguing steelmaking. The original anti-slag treatment process: 1) The empty slag tank of the converter is sprayed first, the inner wall and bottom of the slag tank a...

Claims

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Application Information

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IPC IPC(8): F27D25/00C21B3/10
Inventor 段建勇解英明俞海明李栋兰飞鹏王瑞利钟文斌陈跃军姜新平李立明胡永胜
Owner XINJIANG BAYI IRON & STEEL
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