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Working lining for continuous cast steel tundish with environmental-friendly binder

An environmentally friendly, binder technology, applied in the field of working lining of continuous casting steel tundish, can solve the problems of carbon increase, production cost increase, environmental pollution, etc., to reduce cost and environmental pollution, eliminate carbon increase problem, solve low temperature Effects of strength and high temperature slag resistance issues

Inactive Publication Date: 2010-09-08
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problems of carburization, environmental pollution and substantial increase in production costs brought by the prior art to molten steel, the present invention provides for the first time a dry The working lining prepared by the material binder can eliminate the problem of carburization of molten steel and can reduce costs and reduce environmental pollution

Method used

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  • Working lining for continuous cast steel tundish with environmental-friendly binder
  • Working lining for continuous cast steel tundish with environmental-friendly binder
  • Working lining for continuous cast steel tundish with environmental-friendly binder

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Embodiment Construction

[0012] The aggregates used in the present invention are magnesia raw materials (92 sintered magnesia and 96 fused magnesia). The dry material binder of the tundish is a sodium borosilicate system, and the raw materials used are sodium metasilicate nonahydrate, SiO 2 Micronized and boric acid.

[0013] The raw material weight percentage content of 92 sintered magnesia is 70wt.% (3-5mm15wt.%, 1-3mm30wt.%, 2 The fine powder and boric acid are respectively 0.2wt.% and 0.8wt.%, and the addition amount of nonahydrate sodium metasilicate is 1.5-3wt.%.

[0014] The above raw materials are common commercially available products, 92 sintered magnesia and 96 fused magnesia are industrial pure, SiO 2 Micronized powder, boric acid and sodium metasilicate nonahydrate are chemically pure.

[0015] Concrete preparation steps are as follows:

[0016] (1) Raw materials with different particle sizes are first batched and mixed according to the ratio shown in Table 1. The instruments used incl...

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Abstract

The invention discloses a working lining for a continuous cast steel tundish and with environmental-friendly binder; and the raw material components and the content thereof in percentage by weight are as follows: 70 weight percent of 92 sintered magnesia, 26 to 27.5 weight percent of 96 fused magnesia, 0.2 weight percent of SiO2 micro powder, 0.8 weight percent of boric acid, and 1.5 to 3 weight percent of sodium metasilicate nonahydrate. The invention provides the working lining which is first prepared from the dry material binder which comprises sodium metasilicate nonahydrate, micro silica powder and boric acid, eliminates the acieration problem of molten steel, reduces the cost and the environmental pollution, and simultaneously solves the problems of low-temperature strength and high-temperature slag resistance of the dry material.

Description

technical field [0001] The present invention relates to continuous steel casting equipment, in particular to a working lining for continuous steel casting tundish. Background technique [0002] With the vigorous adoption and development of continuous steel casting technology in our country, the iron and steel industry has developed rapidly in our country, and the development of the iron and steel industry is manifested in the continuous progress of steelmaking technology. In the continuous steel casting process system, initially the tundish only acts as a buffer between the ladle and the mold. With the optimization of the continuous casting process and the improvement of the quality requirements of the continuous casting billet, the tundish has evolved into a terminal equipment for molten steel refining, which has two main functions: one is the refining of molten steel; the other is the elimination of non-metallic inclusions. In order to achieve new functions, the refractor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 陶慧
Owner TIANJIN UNIV
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