Method for preparing desulfurization gypsum beta-powder

Abstract

The invention discloses a preparation method for desulfurized gypsum Beta powder, and the steps are as follows: A. base material preparation: screening and warehousing the desulfurized gypsum of a power station with the fineness being 40 to 60 Mum, piling upwards by a piling shed and airing, and dehydrating some adhesive water (less than or equal to 10 percent). B. feeding the desulfurized gypsum which is aired and dehydrated off some adhesive water into an airflow rotational flow dynamic flash burning furnace in uniform motion, the inletting temperature when feeding materials is 400 to 500 DEG C, calcining (for 1 to 6 seconds), the discharge is controlled at temperature of 160 to 220 DEG C, then homogenizing and aging, thus preparing the desulfurized gypsum Beta powder by packaging. The method of the invention has the advantages of simple and easy execution, convenient operation and being suitable for mass production, and aims at comprehensively processing and applying smoke gas desulfurized gypsum in the industrial waste of the power station to lead the smoke gas desulfurized gypsum to replace natural dihydrate gypsum for becoming another gypsum building material and material used for ceramic die, thus solving the problems of resource shortage of high quality natural dihydrate gypsum and comprehensive processing hysteresis of the smoke gas desulfurized gypsum of the power station, changing waste into valuables and accelerating the development of cyclic economy.

Description

Preparation method of desulfurized gypsum beta powder technical field The invention relates to architectural decoration and ceramic model materials, and more specifically to a preparation method of desulfurized gypsum beta powder. Background technique Existing gypsum β powder on the market is fired from natural dihydrate gypsum, and is mainly used for architectural decoration and ceramic models such as gypsum boards, gypsum moldings, and gypsum blocks. Although China is a large gypsum country, there are very few high-quality dihydrate gypsum resources, accounting for only about 10%, and the others are mainly ordinary dihydrate gypsum and anhydrite. Since China's reform and opening up, especially in the past ten years, due to the rapid development of the construction field, the output of gypsum has increased rapidly, resulting in the shortage of high-quality natural dihydrate gypsum resources, and there is an urgent need for high-quality raw materials to replace them. On ...

AI Technical Summary

Problems solved by technology

The purpose is to comprehensively treat and use the industrial waste residue of power plants - flue gas desulfurization gypsum, so that it can replace natural dihydrate gypsum and become another gypsum building material and ceramic molding material, so as to solve the shortage of high-quality natural dihydrate gypsum resources, power plant smoke Gas desulfurization gypsum comprehensively treats the lagging problem, turns waste into treasure, and promotes the development of circular economy