A kind of cement raw material additive and its application and cement production process

Abstract

The disclosure relates to a cement raw meal additive and its application and cement production process. The cement raw meal additive contains depolymerization reaction liquid of waste polyester and / or waste after fractionation of the depolymerization reaction liquid, and optional alkali Sex enhancer. The cement raw meal additive provided by the present disclosure can recycle the depolymerization reaction solution of waste polyester and / or the fractionated waste of the depolymerization reaction solution in cement raw meal grinding and cement production, and has a good improvement Comprehensive effects such as increasing output, reducing coal consumption, improving raw material burnability and desulfurization.

Description

technical field

[0001] The present disclosure relates to a cement raw meal additive, its application and a cement production process. Background technique

[0002] Cement production is an industry with low energy utilization rate and high energy consumption. my country's cement output in 2016 was 2.3 billion tons, accounting for more than half of the global output. The cement production process is divided into three stages, that is, calcareous raw materials, clay raw materials, and a small amount of corrected raw materials (a certain amount of coal is also added to shaft kiln production). After crushing or drying, they are blended in a certain proportion, ground, and Preparation of raw meal with suitable composition and uniform quality is called the first stage: raw meal grinding; then the ground raw meal is added to the cement kiln to be calcined until it is partially melted, and the cement clinker with calcium silicate as the main component is obtained. The raw material i...

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