System and method for preparing cement clinker

Abstract

The invention discloses a system and method for preparing a cement clinker. The system comprises a first mixing device comprising a siliceous correction agent inlet, an aluminum correction agent inlet, an iron correction agent inlet, and a mixed correction material outlet, a correction agent grinding device comprising a mixed correction material inlet and a mixed correction powder material outlet,a dehydration device comprising a carbide slag inlet and a dehydrated carbide slag outlet, a drying crusher comprising a dehydrated carbide slag inlet and a dried carbide slag particle outlet, a first preheating device comprising a mixed correction powder material inlet and a first preheated material outlet, a second preheating device comprising a material inlet and a second preheated material outlet, a decomposition device comprising a mixed material inlet and a decomposed material outlet, a third preheating device comprising a decomposed material inlet and a third preheated material outlet,a calcining device comprising a third preheated material inlet and a high temperature cement clinker outlet and a cooling device comprising a high temperature cement clinker inlet and a cement clinker outlet.

Description

technical field [0001] The invention belongs to the field of cement production, in particular, the invention relates to a system and a method for preparing cement clinker. Background technique [0002] Carbide slag is the residue after calcium carbide hydrolysis, the main component is Ca(OH) 2 . In 2015, about 25 million tons of calcium carbide were produced in the country, and if each ton of calcium carbide was hydrolyzed to produce about 1.2 to 1.5 tons of carbide slag, about 30 million to 37.5 million tons of calcium carbide slag could be produced. In recent years, the cumulative amount of calcium carbide slag in my country has exceeded 100 million tons. Stacking it not only takes up a lot of land, but also the water in the calcium carbide slag slurry penetrates into the groundwater, causing problems such as land alkalization and water resource pollution. Carbide slag is easy to raise dust when exposed to the wind after being stacked for a long time and air-dried, which...

AI Technical Summary

Problems solved by technology

In recent years, the cumulative amount of calcium carbide slag in my country has exceeded 100 million tons. Stacking it not only takes up a lot of land, but also the water in the calcium carbide slag slurry penetrates into the groundwater, causing problems such as land alkalization and water resource pollution.

Carbide slag is easy to raise dust when exposed to wind after long-term stacking and drying, which poses a great threat to the surrounding environment

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