Method for preventing crush of slag ladle when positioning furnace washing slag

A technology of slag pot and container, applied in the direction of manufacturing converters, etc., to achieve the effect of highlighting technological progress and preventing penetration of the tank

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

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Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0013] Take an 11m3 slag tank used on a 120-ton converter as an example;

[0014] Before the slag tank is filled with converter slag for washing, the slag tank is first paved with waste paint from the tundish at the bottom of the slag tank, the thickness of which is 200mm, and then 800kg of waste converter oxidized steel slag with a particle size of less than 100mm is laid on the bottom of the slag tank, and then the slag tank is hoisted onto the slag tank truck , to the converter slag discharge position, accept the converter slag washing. When receiving slag, the slag washing slag flow of the converter is aimed at the middle of the slag tank for slag discharge operation. During the slag discharge process, the slag volume should be small first and then large. Until the slag discharge operation is completed, the slag tank is completed Accept the operation process of converter slag washing.

[0015] The discarded paint in the tundish contains 80% powder and 20% particulate matt...

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PUM

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Abstract

The invention provides a method for preventing crush of a slag ladle when positioning furnace washing slag, which comprises the steps of: paving paint wasted by a tundish used by continuous casting steel at the bottom of the slag ladle, wherein the paved paint is 200-220 mm thick; then paving 800-820 kg of wasted oxidized steel slag of a rotary furnace, wherein the grain size of the steel slag is smaller than 100 mm; and carrying out slag positioning operation by using the slag ladle to effectively prevent damage caused by crush of the ladle when positioning furnace washing slag. The wasted paint used consists of 80% of powder and 20% of mixture of which the grain size is 30-50 mm.

Description

[0001] technical field [0002] The invention relates to the safe production of steelmaking, and is mainly aimed at the protection of the slag tank easy-to-wear tank containing converter slag washing, and at the same time solves the problem of recycling waste paint in the tundish during the production process of the continuous casting production line. Background technique [0003] Before the converter is dismantled, it is necessary to carry out the furnace washing operation, that is, to dissolve the slag splash layer and the adhered slag on the converter lining through the high-temperature slag, and repair the furnace material, so as to facilitate the subsequent dismantling operation. Furnace washing operation has the following two processes: (a) The tapping temperature of the last furnace of steel is kept above 1680°C, and the fluidity of the slag is deliberately required to be better, so the slag temperature is higher, the iron oxide content in the slag is higher, and the s...

Claims

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Application Information

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IPC IPC(8): C21C5/46
Inventor 王伟俞海明梁军王瑞利胡永胜刘鲁新徐江段建勇
Owner XINJIANG BAYI IRON & STEEL
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