Highly active cement mineral forming promoter

Abstract

The invention relates to high activity cement mineral forming accelerating agent applied to produce new type dry method cement. It is made up of seed crystal activating agent and high calcium carrier, and their proportioning by weight respectively are from one portion to three portion, and from eight portion to twenty four portion. The constituent and weight content of the seed crystal activating agent is from forty percent to eighty percent of the slag, the mineralizing agent is from twenty percent to sixty percent. The main effects of the accelerating agent supplied by the invention are that it obviously appear the seed crystal and mineralizing action, can greatly improve the raw material inflammability, reduce the fire temperature, broaden the fire range, increase the C3S content and activity of the clinker, so that increase the output and quality, as well as save resource and energy source, reduce the environment loading, and possess better economic and social benefit.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a highly active cement mineral formation accelerator, which is suitable for the production of new dry process cement. Background technique [0002] Additives that accelerate or improve the formation of cement minerals, such as cement mineralizers, raw meal activators, etc., have been studied a lot at home and abroad, and there are a lot of literature. The main technical contents in these documents are: [0003] 1. Mineralizer formed by cement minerals: Cement clinker firing is a solid-liquid phase reaction process with slow reaction speed and high temperature, and CaCO 3 Decomposition and liquid phase formation require a large amount of energy and affect clinker yield and quality. The introduction of mineralizer can accelerate the generation of liquid phase and promote C 3 The formation of S can improve the burnability of raw meal, increase the output and quality of clinker, ...

AI Technical Summary

Problems solved by technology

[0005] However, the amount of general mineralizer in the raw meal is small (1-3%), it is not easy to mix evenly, and it is easy to cause local lumps, which affects the quality of clinker and the stability of the production process.

At the same time, there is no intensive activation treatment for industrial waste residues, and the effect of its seed crystals and modification is not significant

For example, it involves a cement mineralizer composed of industrial by-products containing calcium silicate and gypsum (patent application number 94111660.3). The difference is large, and the fineness of steel slag is difficult to meet the requirements of cement seed crystals, so that the mineralizer cannot meet the requirements of the role of crystal seeds and mineralizers; and in the batching process, there is no substitute for the corresponding raw materials for steel slag with a large amount. , it is easy to cause changes in raw material ratio

Another example relates to a raw material multi-component activator used in the production of shaft kiln cement (patent application number 00112032.8), which is composed of steel slag or clinker, fluorite and gypsum, and does not consider the fineness of the material, and does not give The amount of this activator in the raw meal and its applicable raw meal ratio value range, when the raw meal is mixed, because the steel slag is used to completely replace the iron raw material, and the steel slag content is not high, so the iron ratio of the raw meal is low , the viscosity of the liquid phase increases during firing, which cannot meet the requirements of large and stable industrial production

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