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A long nozzle for composite waste steel ladle brick slag line broken material

A technology of crushed material and long nozzle, applied in the field of long nozzle, can solve the problems of increasing product cost, affecting the service life of long nozzle, intensifying erosion, etc., saving resources, improving product market competitiveness, and excellent thermal shock resistance. Effect

Active Publication Date: 2021-07-20
北京利尔高温材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the material of the slag line of the shroud is mainly aluminum carbon, and very few are magnesium carbon or zirconium carbon. However, in the process of casting certain steel types in the aluminum carbon shroud, if a covering agent with high alkalinity is used or The slag from the ladle will intensify its corrosion and seriously affect the service life of the long nozzle
At the same time, magnesia-carbon or zirconium-carbon long nozzles require high-purity magnesia or zirconia as raw materials, which directly increases the product cost

Method used

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  • A long nozzle for composite waste steel ladle brick slag line broken material
  • A long nozzle for composite waste steel ladle brick slag line broken material

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0024] The formula used for composite layer 6 at part 7 of Changshuikou slag line is: 55% scrap ladle brick crushing material, 7% +199 graphite, 10% 895 graphite, 10% fused magnesia, 8% zirconium mullite, 5% fused silica %, metal silicon powder 2%, boron glass 1.5%, carbon black 1.5%, plus solid resin 2.5%, liquid resin 13%, waste ladle bricks are made of magnesium carbon. The raw materials used are mixed and granulated according to the proportion required by the formula. After the prepared mud is dried and qualified, it is stored in the trapped material workshop for 24 hours, and then compounded on the 7th part of the slag line at the long water outlet. The compound height is 450mm. The thickness is 15mm. After drying, firing, lathe processing, flaw detection and spraying anti-oxidation coating, the formed product is packaged and sent to a steel factory for use. When casting a certain steel type with high alkalinity covering agent, casting 10 furnaces were used for 7.5 hours,...

example 2

[0026] The formula used for composite layer 6 at part 7 of long nozzle slag line is: 60% scrap ladle brick crushing material, +199 graphite 18%, fused magnesia 13%, fused quartz 5%, metal silicon powder 2%, boron carbide 1.5% , carbon black 0.5%, plus solid resin 2.5%, liquid resin 14%, waste steel clad bricks are made of magnesia carbon material, the raw materials used are mixed and granulated according to the proportion required by the formula, and the prepared mud is dried and qualified, After being stored in the workshop for 24 hours, it is compounded on the 7th part of the slag line of the long nozzle, where the compound height is 450mm and the thickness is 15mm. After drying, firing, turning, flaw detection and spraying anti-oxidation coating on the formed product , after being packaged and sent to a steel factory for use, when casting a certain steel type using a high-alkalinity covering agent, the maximum casting time is 16 furnaces, the service time is 11.9 hours, the ...

example 3

[0028]The formula used for composite layer 6 at part 7 of long nozzle slag line is: scrap ladle brick crushing material 65%, +199 graphite 18%, fused magnesia 6%, zirconium mullite 6%, metal silicon powder 2%, boron carbide 1.5%, carbon black 1.5%, plus solid resin 1%, liquid resin 13%, waste steel clad bricks are made of magnesia carbon material, the raw materials used are mixed and granulated according to the proportion required by the formula, and the prepared mud is dried and qualified Finally, after storing in the material workshop for 24 hours, it is compounded on the 7th part of the slag line of the long nozzle. The compound height is 450mm and the thickness is 20mm. The formed product is dried, fired, turned, flaw detected and sprayed with anti-oxidation After layering, it is packaged and sent to a steel factory for use. When casting a certain steel grade using a high-alkalinity covering agent, the maximum casting time is 14 furnaces, the service time is 10.4 hours, and...

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Abstract

The invention discloses a shroud for the broken material of the composite waste steel ladle brick slag line, which comprises an argon blowing nozzle, an iron shell, an inner lining, a body, a transition layer, a composite layer, and a slag line. The iron shell is arranged on the body, and the An argon blowing nozzle is arranged on the iron shell, a lining is arranged inside the body, a transition layer is arranged inside the lower end of the body, a composite layer is arranged at the lower end of the transition layer, and a slag line is arranged on one side of the composite layer, The method of using this new type of waste steel-clad brick in the long nozzle and the development of its formula mainly use waste steel-clad brick as raw material. Excellent anti-alkaline slag erosion ability and excellent thermal shock resistance. At the same time, the recycling of waste ladle bricks not only solves the problem of difficult disposal and reduces environmental pollution, but also greatly reduces production costs and creates more profits for enterprises. , Improve product market competitiveness.

Description

technical field [0001] The invention relates to the field of continuous casting functional refractory materials, in particular to a shroud for composite scrap ladle brick slag line broken material. Background technique [0002] With the strengthening of national environmental protection, the requirements for the mining of refractory raw materials are becoming more and more stringent, and some environmental supervision systems are gradually improved and implemented, which directly limits the supply of raw materials, making the cost of raw materials for refractory products production plants gradually increase, and severely compressed. company profits. At the same time, while consuming inventory, the reuse of waste materials is in line with my country's energy conservation and emission reduction, green development strategy and development requirements for reducing environmental pollution. The final disposal of used waste ladle bricks not only encroach on land resources, but al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D41/54B22D41/50
CPCB22D41/50B22D41/54
Inventor 刘丽徐业兴任林赵现华鄢凤明郭钰龙王次明王晓东王培勇刘天亮孙春晖王佳宁杜冀川张盛刘靖轩张晗刘美荣高梅
Owner 北京利尔高温材料股份有限公司