Cement clinker preparation system and method

Abstract

The invention discloses a cement clinker preparation system and method. The system comprises a dewatering device, a first mixing device, a fine grinding device, a second mixing device, a first preheating device, a decomposition device, a second preheating device, a calcination device and a cooling device, wherein the dewatering device is provided with a carbide slag inlet and a dewatered carbide slag outlet; the first mixing device is provided with a silicon correcting agent inlet, an aluminum correcting agent inlet, an iron correcting agent inlet and a mixed correcting material outlet; the fine grinding device is provided with a fixed correcting material inlet and a mixed correcting powder outlet; the second mixing device is provided with a dewatered carbide slag inlet, a mixed correcting power inlet and a mixed material outlet; the first preheating device is provided with a mixed material inlet and a first heat exchange material outlet; the decomposition device is provided with a first heat exchange material inlet and a decomposition material outlet; the second preheating device is provided with a material inlet and a second heat exchange material outlet; the roasting device is provided with a second heat exchange material inlet and a high-temperature cement clinker outlet; the cooling device is provided with a high-temperature cement clinker inlet, a first gas outlet, a second gas outlet, a third gas outlet 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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