Tundish covering agent produced through calcium roasting vanadium-extracted waste residues and preparing method of tundish covering agent

Abstract

The invention discloses a tundish covering agent produced through calcium roasting vanadium-extracted waste residues and a preparing method of the tundish covering agent. The tundish covering agent comprises, by weight, 15-26 parts of wollastonite, 20-40 parts of calcium roasting vanadium-extracted waste residues, 5-20 parts of calcite, 5-20 parts of bentonite, 0-10 parts of flint clay, 0-3 parts of fluorite, 1-4 parts of soda ash, 0-15 parts of high-carbon coal ash and 1-3 parts of binder. According to the tundish covering agent, the low-price calcium roasting vanadium-extracted waste residues serve as the raw material for producing the tundish covering agent, and other raw materials such as the wollastonite, the calcite, the bentonite, the flint clay, the fluorite powder, the soda ash and the high-carbon coal ash are used for preparing the tundish covering agent; and cost is low, preparing is easy, and the economic and environment-friendly benefits are extremely remarkable.

Description

technical field [0001] The invention belongs to the technical field of metallurgical auxiliary materials, and in particular relates to a tundish covering agent produced by using calcified roasting waste residue for extracting vanadium and a preparation method thereof. Background technique [0002] Due to the rapid expansion of steel production capacity in recent years, coupled with the continuous downward economic situation, the overcapacity of steel production has become more and more prominent, and most steel companies are in a state of loss. costs and increase profits. The price reduction of raw materials, fuels and metallurgical auxiliary materials is a direct and effective way for steel mills to reduce costs. Iron and steel companies have reduced the purchase prices of various raw materials and fuels including tundish covering agents. In addition, the prices of various raw materials for tundish covering agents have been increasing. Therefore, it is very important for t...

AI Technical Summary

Problems solved by technology

In the prior art, the tundish covering agent is mainly made of wollastonite, fly ash, limestone, dolomite, bentonite, coke gemstone, bauxite, etc., and fluorite, soda ash, etc. are used as fluxes. According to the process of steel mills, certain carbonaceous materials are used for production, among which wollastonite, limestone, bentonite, and fluorite are used in a relatively large proportion. Extensive mining of such materials destroys the ecological balance. In addition, such materials are non-renewable resources. The price rises year by year, coupled with the cost of subsequent transportation and processing, the cost of the covering agent remains high, which squeezes the profit margin and restricts the development of the enterprise. Therefore, it is very important to find alternative materials with low prices