Clinker preparation method of sintering method aluminium oxide production technology

Abstract

A proces for preparing the grog used for producing aluminium oxide by sinter method includes pulverizing bauxite, proportionally mixing it with concentrated carbon liquid, lime, sodium carbonate and other circulating materials, ball grinding to obtain raw slurry, drying, shaping, stacking in kiln and calcining. Its advantages are less environmental pollution, low energy consumption and high productivity.

Description

technical field [0001] The invention belongs to a method for preparing clinker used in a sintered alumina production process, in particular to a method for preparing clinker in a sintered alumina production process with bauxite. Background technique [0002] The traditional preparation method of clinker in sintered alumina production process is to crush bauxite ore to a certain fineness, and add it to a ball mill for fine grinding together with concentrated carbon fraction mother liquor, lime, supplemented soda ash and other circulating materials to produce After the raw slurry is adjusted and qualified, it is sprayed into the rotary kiln with a spray gun, and is calcined under certain firing conditions to become clinker. This method is widely used in actual production. The disadvantage is that the calcined material The raw slurry is sprayed into the rotary kiln with a blower and a spray gun, so the exhaust gas will produce a lot of dust to pollute the environment, and in th...

AI Technical Summary

Problems solved by technology

[0002] The traditional preparation method of clinker in sintered alumina production process is to crush bauxite ore to a certain fineness, and then add it to a ball mill for fine grinding together with concentrated carbon fraction mother liquor, lime, supplemented soda ash and other circulating materials to produce After the raw slurry is adjusted and qualified, it is sprayed into the rotary kiln with a spray gun, and is calcined under certain firing conditions to become clinker. This method is widely used in actual production. The disadvantage is that the calcined material The raw slurry is sprayed into the rotary kiln with a blower and a spray gun, so the exhaust gas will produce a large amount of dust to pollute the environment, and in this method, the material is in direct contact with the inner wall of the kiln, which is easy to corrode the kiln body and cause the rotary kiln to appear. Phenomena such as "rolling the big egg" and "forming a circle"

In addition, this method also has the disadvantage of low kiln operation rate.