Equipment and process for switchable production of white cement clinker and Portland cement clinker

Abstract

The invention belongs to the field of cement firing processes and equipment, and particularly relates to equipment and a process for switchable production of white cement clinker and Portland cement clinker. Low-temperature secondary and tertiary air pipelines are adopted when the white cement clinker is produced, secondary and tertiary air is provided for fuel combustion of a rotary kiln and a decomposing furnace, and when the Portland cement clinker is produced, a high-temperature secondary air pipeline and a high-temperature tertiary air pipeline are switched to provide high-temperature secondary air and high-temperature tertiary air for fuel combustion of the rotary kiln and the decomposing furnace, or the high-temperature tertiary air pipeline is adopted to provide high-temperature tertiary air for fuel combustion of the decomposing furnace, secondary air enters the rotary kiln through a single-cylinder bleaching machine, and residual air is exhausted into a waste gas treatment system through a residual air pipeline. The equipment and the process for switchable production of the white cement clinker and the Portland cement clinker are provided to solve the problem that production processes of the white cement clinker and the Portland cement clinker cannot be switched and compatible, and manufacturers can flexibly select to produce the white cement clinker and the Portlandcement clinker by adopting the equipment and the process for switchable production of the white cement clinker and the Portland cement clinker according to market demands.

Description

technical field [0001] The invention belongs to the field of cement firing technology and equipment, and in particular relates to equipment and technology capable of switching production of white cement clinker and Portland cement clinker. Background technique [0002] Existing techniques and drawbacks: [0003] After the Portland cement clinker is fired at high temperature, it needs to be cooled rapidly by air cooling to ensure that the clinker has good physical and mechanical properties; white Portland cement is referred to as "white cement". In order to improve the whiteness of the clinker, in addition to controlling In addition to the iron content, the production process requires the high-temperature clinker out of the kiln to be quenched and bleached by water spraying. [0004] Due to the large difference between the special requirements of white cement production process and ordinary Portland cement, the white cement production line is compared with ordinary Portland ...

AI Technical Summary

Problems solved by technology

[0007] Therefore, based on these problems, a solution is provided to solve the problem that the production process of white cement clinker and Portland cement clinker cannot be switched and compatible. Manufacturers can switch between white cement clinker and Portland cement clinker according to market demand. , it is of great practical significance to switch the equipment and process for producing white cement clinker and Portland cement clinker