Preparation process of siliceous temperature raising agent

Abstract

The invention discloses a preparation process of a siliceous temperature raising agent. The preparation process is characterized in that the siliceous temperature raising agent is prepared from the following raw materials: ferrosilicon alloy smelting slag or industrial silicon smelting slag, iron-containing fine particles, carbon powder, bentonite and a forming binding agent; and the preparation process of the siliceous temperature raising agent also comprises the following steps: step 1, dry mixing and stirring; step 2, wet mixing and stirring; step 3, cold press molding; step 4, primary screening; step 5, natural drying; step 6, baking and drying; and step 7, final screening: selecting the part with the particle size of more than 5 mm to prepare industrial silicon powder pellets. The siliceous temperature raising agent has the advantages of being good in melting effect, high and stable in silicon yield, small in molten steel pollution and the like when being applied to a steel making process; and under the great situation that low-cost steel making is achieved, a new choice is brought to the steel making industry, and the siliceous temperature raising agent is an ideal substitute of high-price ferrosilicon at present. The problem of secondary pollution in the industrial silicon industry is also solved, and the siliceous temperature raising agent is economical and environment-friendly. The defects in the prior art are overcome.

Description

technical field [0001] The invention relates to the technical field of auxiliary materials for iron and steel smelting, in particular to a preparation process of a silicon temperature raising agent. Background technique [0002] The temperature raising auxiliary material used in the steelmaking temperature raising agent in the prior art is ferrosilicon alloy. At present, the price of ferrosilicon alloy is relatively high, and the cost pressure of steel mills is relatively high. In today's fierce competition in the steel market, realizing low-cost steelmaking has become the goal pursued by steelmaking technicians. The steelmaking process of the prior art needs to further reduce the cost of auxiliary materials for temperature raising, alloying, and deoxidation operations in the steelmaking process, and get rid of the dependence of the steelmaking process on ferrosilicon alloys. [0003] The siliceous temperature-raising agent of the present invention has the advantages of go...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation process of a silicon temperature raising agent, which reasonably solves the secondary resource pollution of the prior art ferrosilicon alloy or in