Coal-firing efficient additive for dry cement process and its use

Abstract

The invention belongs to coal additive field, especially a dry method concrete technology burning high efficiency additive. The feature is that it is made up of 20-30 portions of steel ground slag, 10-30 portions of barium slag, 5-10 portions of potassium permanganate, 1-2 portions of modification paper making sewage, 5-10 portions of citric acid, and 30-50 portions of high calcium fly ash. It could enhance the fire feature, and decline the firing temperature and no negative effect to concrete clinker aggregate.

Description

technical field [0001] The invention belongs to the field of coal-burning additives, and in particular relates to a novel dry-process cement process coal-burning additive and its application. Background technique [0002] In 2004, my country's total cement output reached 970 million tons, and the total energy consumption of cement reached more than 100 million tons of standard coal, accounting for 10% of the country's total coal output. Therefore, the development of the cement industry, which is high in energy consumption and low in output, will be restricted under the situation of increasingly tense energy consumption in various countries. At present, although my country's coal resources are quite rich, with proven reserves of more than 4.5 trillion tons, ranking first in the world, the distribution of resources is very uneven, with less in the east and more in the west, and more in the south and north. The distribution of coal varieties in my country is also very uneven. ...

AI Technical Summary

Problems solved by technology

Moreover, most of the commercially available combustion aids have disadvantages such as high dosage, high price and selectivity to coal types.