Refractory brick high in refractoriness under load and preparation method thereof

Abstract

The invention discloses a refractory brick high in refractoriness under load and a preparation method thereof. The refractory brick is prepared from, by weight, 12-19 parts of enstatite, 21-28 parts of fused magnesite, 14-22 parts of dawsonite, 22-34 parts of high silicon vanadium tailings, 6-12 parts of boron phosphate, 18-30 parts of molten blast furnace slag, 10-15 parts of colloidal graphite powder, 5-10 parts of tungsten silicide, 36-48 parts of high-alumina cement, 16-28 parts of silicate cement slurry, 15-25 parts of silicon manganese slag, 8-14 parts of polyvinylpyrrolidone and 5-10 parts of waste sugarcane molasses. By the raw materials of fused magnesite, enstatite and dawsonite matching with colloidal graphite powder, tungsten silicide and the like, refractoriness under load of the refractory brick is enhanced obviously under the condition that refractoriness of the brick body is unaffected. The refractory brick is good in fire resistance, high in refractoriness under load and high-temperature strength, strong in thermal stability, easy to process and long in service life.

Description

technical field [0001] The invention relates to a refractory brick with a high load softening temperature and a preparation method thereof, belonging to the field of refractory materials. Background technique [0002] Refractory bricks are refractory materials with a certain shape and size made of refractory clay or other refractory raw materials, and can withstand high temperatures of 1580°C-1770°C. According to the preparation process, it can be divided into fired bricks, unfired bricks, fused bricks (fused cast bricks), refractory and heat-insulating bricks; according to the shape and size, it can be divided into standard bricks, ordinary bricks, special bricks, etc. Refractory bricks can be used as high-temperature building materials and structural materials for construction kilns and various thermal equipment, and can withstand various physical and chemical changes and mechanical actions at high temperatures. [0003] In recent years, the domestic refractory brick prod...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a refractory brick with high softening temperature under load and its preparation method, so as to solve the problems of low softening temperature under load and low refractoriness of existing refractory bricks