Ladle covering agent prepared through utilizing blast furnace slag

A technology of ladle covering agent and blast furnace slag, applied in the metallurgical field, can solve the problems of high overall cost and inability to utilize blast furnace slag in steel plants, etc., and achieve the effects of improving internal quality, good spreading performance, good spreading and heat preservation properties
CN103173592AActive Publication Date: 2013-06-26XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
Publication Date
2013-06-26
Patent Text Reader

Abstract

The invention provides a ladle covering agent prepared through utilizing blast furnace slag. The ladle covering agent is composed of 30-40 parts by weight of blast furnace slag, 26.7-40 parts by weight of limestone, 15-20 parts by weight of vermiculite and 5-15 parts by weight of fluorite, wherein the total weight part of the above raw materials is 100. The main raw materials of the ladle covering agent have the advantages of low cost, suitable melting point, short fusing time and good spreadability; and limestone decomposes at 800-1200DEG C, foams and expands, vermiculite expands at a high temperature, and the friction force among solid particles is lower than the inner friction force among powders, so the spreadability and the heat insulating property are good. The ladle covering agent can prevent the secondary oxidation and too large temperature decrease of molten steel, and has a certain impurity adsorption and inclusion capability to purify the molten steel because of the appropriate alkalinity. The ladle covering agent has no carbon, does not carburize the molten steel, and is in favor of the component control of the production process.
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Description

technical field

[0001] The invention belongs to the field of metallurgy and relates to a ladle covering agent, in particular to a ladle covering agent prepared from blast furnace slag. Background technique

[0002] Steel ladles are mainly used to store and transport molten steel and maintain the temperature of molten steel. Due to the development of continuous casting technology, the residence time of molten steel in the ladle will be extended. In order to meet the technological requirements of subsequent processes, how to maintain the temperature of molten steel in the ladle and increase The quality of molten steel has become a major issue. Therefore, in order to prevent the secondary oxidation of molten steel in the ladle, reduce the temperature drop of molten steel, provide molten steel with a suitable temperature for continuous casting, and ensure its smooth pouring, the role of thermal insulation covering agent is very important.

[0003] The ladle covering agent is ad...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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