Refractory lining pouring material for incineration rotary kiln

Abstract

The invention discloses a refractory lining pouring material for an incineration rotary kiln. A rotary kiln refractory lining comprises an outer light heat-insulating layer and an inner high temperature wear resistant layer, an outer kiln wall heat insulation layer pouring material is prepared from argillaceous porous clinker, high-alumina cement, aluminum oxide micro powder and water by even stirring for mixing, an inner high temperature wear resistant layer pouring material is prepared from high alumina bauxite, the high alumina cement, the aluminum oxide micro powder, zirconite, compound additive sodium tripolyphosphate and sodium polyacrylate and water by even stirring for mixing, the rotary kiln refractory lining poured by use of the refractory lining pouring material has the advantages of heat resistance, heat insulation and shock and wear resistance, and is suitable for use in pouring of the rotary kiln refractory lining for waste oil sludge incineration.

Description

technical field [0001] The invention relates to the field of a high-temperature incineration rotary kiln refractory material in smelting, chemical industry and other industries, in particular to a refractory lining castable for incineration rotary kiln. Background technique [0002] The service life of the rotary kiln refractory lining material used for high-temperature incineration directly affects the operation rate and service life of the rotary kiln. Reduce material consumption, prolong the service life of the kiln, and more importantly, reduce operating costs. Therefore, people put a lot of energy into extensive research on refractory materials. For industrial kilns, especially rotary kilns for incinerating waste oil sludge, since the incineration temperature of the materials in the kiln is as high as 1200°C, and the materials must be fully and completely burned with the rotation of the kiln, the ashes or non-combustible parts after incineration must be burnt. The kil...

AI Technical Summary

Problems solved by technology

However, for the waste oil sludge rotary kiln with an operating temperature of 800°C-1200°C, the performance gap is large

——The binder and aggregate produce low melting phases such as calcium aluminate feldspar at high temperature, which reduces the strength and wear resistance; the second is that the thermal shock performance is poor, and it cannot meet the working conditions of frequent start-up and stop and rotary operation. Kiln life and safety are insufficient

Most rotary kilns need to be shut down for maintenance after 6-9 months of operation, which affects production and operating costs