Environment-friendly silicious dry-type material

Abstract

The invention discloses an environment-friendly silicious dry-type material, which is characterized by including the following constituents in mass percent: 13.6-14.4% of quartz sands with the particle size of 3mm, 63.3-65.3% of quartz sands with the particle size of 0.3 mm-3mm, 15.5-16.5% of quartz sands with the particle size of 0.088 mm, 4.7-5.3% of anhydrous dextrose and 0.6-0.8% of borax. The silicious dry-type material can be used for smelting ordinary steel, and the use ratio reaches 90% above, so that the consumption of mineral resources is greatly reduced; besides, quartz sands are one kind of the most extensively distributed minerals on the surface of the earth, the market purchasing price of the raw material per ton is 175.00 yuan, and the market purchasing price of magnesite per ton is 1950.00 yuan, so that the cost can be reduced by 1775 yuan per ton with respect to the main raw material, therefore, based on the raw material consumption and price factor, the cost of the silicious dry-type material is only 1 / 20 of that of the magnesian dry-type material, as a result, the steelmaking cost is greatly reduced with respect to raw material, particularly, the cost is reduced while the smelting requirement of ordinary steel is met without lowering the product quality.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to an environment-friendly siliceous dry material. Background technique [0002] At present, the dry materials for ordinary steel grades and superior steel grades are mainly made of magnesia or forsterite, and solid phenolic resin is used as a binder. The general service life of this magnesia dry material is 24-45 However, when producing ordinary steel grades, it generally only takes 8 to 12 hours, and the utilization rate is less than half, which wastes mineral resources, and the cost of steelmaking is very high. [0003] Traditional dry materials generally use powdered phenolic resin as a binder. The adhesive contains a certain amount of formaldehyde and free phenol, which produces odorous and harmful smoke during baking and use, which is harmful to the environment and the health of employees; the carbon residue after carbonization of the phenolic resin remains in the lining, which will...

AI Technical Summary

Problems solved by technology

The adhesive contains a certain amount of formaldehyde and free phenol, which will produce very smelly and harmful fumes during baking and use, endangering the environment and the health of employees; The problem of adding carbon to molten steel; at the same time, as an organic matter, phenolic resin is easy to bring hydrogen into molten steel when smelting low-carbon steel