Stone coal slag autoclaved brick production method

Abstract

The invention relates to a stone coal slag autoclaved brick production method. The stone coal slag autoclaved brick production method comprises limestone, stone coal, clay, vertical lime kiln, lime, alime warehouse, a stone coal clay slag, coal ash, a crusher, a digestion cell, water, a brick production machine, brick car, an autoclave, and a finished product brick yard. The stone coal slag autoclaved brick production method is characterized by comprising the steps of adding 10 to 20 percent of clay to be calcined when the lime is calcined, separating the lime from waste slag at an outlet ofthe lime kiln, wherein the waste slag comprises stone coal slag, clay slag and lime, since the slag comprises a given amount of silicate hydrogel substances and lime, the autoclaved brick is high in pressure resisting strength; by adding little coal ash into the digestion cell, adding 15 to 18 percent of water, mixing, naturally cooling the lime, digesting for 4 to 6 hours, producing the brick byvirtue of the brick production machine, placing the green brick onto the brick car, fully filling the autoclave, closing autoclave doors on two ends, introducing steam, autoclaving for 4 to 6 hours, then standing for 2 to 4 hours, jointly delivering the brick and the finished product brick car out of the autoclave, transporting to the finished product brick yard. The prepared autoclaved brick is smooth in surface, regular in appearance and high in strength, and has better performance than the clay brick.

Description

technical field [0001] The invention relates to a method for producing autoclaved stone cinder bricks, which belongs to the technical field of building materials. Background technique [0002] Most of vertical kiln lime production uses stone coal as fuel. Stone coal is a fuel with low calorific value. It has abundant reserves in my country. With the reduction of bituminous coal resources, stone coal is currently used in industrial and mining processing and production. Calcined lime and various fluidized fluidized furnaces use stone coal as the fuel. Due to the characteristic that the volume of stone coal does not change much after combustion, stone coal slag has little use. Over the years, ancestors have used it. Calcining lime with stone coal leaves piles of stone coal slag, which has a great impact on the ecological environment. Contents of the invention [0003] In order to solve the above problems, the use of stone cinders to produce autoclaved bricks has found a way ou...

AI Technical Summary

Problems solved by technology

[0002] Most of vertical kiln lime production uses stone coal as fuel. Stone coal is a fuel with low calorific value. It has abundant reserves in my country. With the reduction of bituminous coal resources, stone coal is currently used in industrial and mining processing and production. Calcined lime and various fluidized fluidized furnaces

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