Preparation method of novel fireproof clay brick

Abstract

The invention discloses a preparation method of a novel fireproof clay brick, wherein the preparation method includes the steps: pretreating a flint clay raw material, grading and screening into coarse particles and fine particles; putting the coarse particles in a calcination shaft kiln and calcining; mixing the flint clay fine particles with soft clay evenly, and co-grinding into mixed clay finepowder; carrying out crushing treatment of the calcined flint clay, and grading to obtain flint clay clinker particles and flint clay clinker fine powder; and carrying out mud mixing of the flint clay clinker particles, the flint clay clinker fine power and the mixed clay fine powder, and carrying out forming, drying and sintering processes to obtain the finished product. The preparation method has the beneficial effects that the preparation method of the fireproof brick adopts mixed clay fine powder with the flint clay clinker particles and the fine powder for preparation, significantly improves the utilization ratio of the raw materials, realizes waste utilization and reduces the production cost. The quality and physical and chemical indexes of the prepared finished fireproof brick arenot reduced but greatly improved. The high temperature indexes are significantly improved, and the service life is significantly enhanced.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a preparation method of a novel refractory clay brick. Background technique [0002] Jiaoge is a kind of hard kaolin rock with bluish-gray massive structure and compact and smooth cross-section. Generally made of kaolinite (Al 2 o 3 2SiO2 2 2H 2 O), diaspore (Al 2 o 3 ·H 2 O) and gibbsite (Al 2 o 3 ·3H 2 O) constituted. Cooked coke gemstones are formed by calcining raw coke gemstones at high temperature. The calcined coke gemstones have stable composition, uniform texture, compact structure, and conchoidal cross-section. They can be used to produce high-grade refractory materials, ceramics, aluminum silicate refractory fibers, etc. [0003] In the production process of refractory materials, coke gemstones are usually calcined in a calcination shaft kiln. The process is as follows: the sieved coke gemstone raw materials are fed into the kiln fro...

AI Technical Summary

Problems solved by technology

This is because if the sieve is not passed or the sieve diameter is too small, the high-temperature mixed flue gas after combustion cannot or cannot smoothly pass through the gap between the raw materials, resulting in the failure of smooth calcination of the raw materials in the upper and middle parts of the shaft kiln, and the over-burning of the raw materials in the middle and lower parts.

This has caused a problem, that is, the raw meal with small particle size under the sieve cannot be used. Our company's existing three calcination shaft kilns use about 200 tons of raw meal per day, of which about 30 tons of the under-screen waste after sieving , raw material utilization rate is only 85%