Method for preparing masonry mortar from sintering flue gas desulfurization waste

Abstract

The invention discloses a preparation method of masonry mortar by utilizing sintering flue gas and desulfurization waste. The method comprises the following steps: evenly mixing heavy calcium carbonate powder, concrete-type construction waste powder, magnesium oxide, a water solution of polyacrylamide and sands, taking the mixture as the flue gas desulfurizer, spraying the mixture from top to bottom in a sintering system to make the mixture carry out reactions with the sintering flue gas, collecting the reaction products; adding dusts collected in the sintering system, polypropylene fibers, redispersable resin rubber powder, and cellulose ether into the reaction products, and blending so as to obtain the masonry mortar. The method takes the heavy calcium carbonate powder, concrete-type construction waste powder, magnesium oxide, a water solution of polyacrylamide, and sands as the desulfurizer to solidify the sulfur and nitrogen in the flue gas in a high temperature desulfurization flue gas atmosphere, the reaction products form a silicon-calcium-magnesium system which can be used to produce the masonry mortar, the method largely reduces the waste gas discharge amount of sintering flue gas, and moreover, the desulfurization waste is utilized at the same time.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a method for preparing masonry mortar by utilizing sintering flue gas desulfurization waste. Background technique [0002] With the development of my country's industrialization process, SO 2 Emissions are increasing year by year, ranking first in the world for many years. SO 2 The acid rain formed by discharge is also increasing year by year, and the scope of influence is constantly expanding. Acid rain has brought serious damage to industrial and agricultural production and human health and environmental pollution. Controlling SO 2 Emissions, prevention and control of atmospheric SO 2 Pollution has become a top priority in China. In recent years, the construction of urbanization has made the distance between urban areas and sintered brick enterprises closer and closer, local governments have paid more and more attention to the problem of smoke pollution from si...

AI Technical Summary

Problems solved by technology

It can be found that the above inventions have opened up new ideas for the application of flue gas desulfurization gypsum for the utilization of sintered flue gas desulfurization gypsum, and have achieved certain results. Or the problem of reusing after building another plant not only needs to consume a lot of energy, but also requires high cost, and even part of the reuse of desulfurized gypsum is small, and the utilization rate is low, and there are problems of high utilization cost and low utilization rate.