Production technology of full-dry desulfurizing gypsum building material product

Abstract

The invention relates to a production technique of a total drying desulfurizing gypsum building material product, which comprises the following steps: desulfurizing gypsum, phosphor gypsum or natural gypsum are taken as the raw materials, through roasting, sieving, adding water and inorganic silicon water repellent compound, the raw materials are still dry powder; then the gypsum building material product with high consistency is obtained through installing by a paver and shaped by high pressure. The product has high strength, good rigidity, without shrinkage and no need of release agent. The gypsum product needs no drying to produce and greatly saves energy, and the energy-saving effect is good. The gypsum product having simple production technique saves energy consumption without discharge of contamination, and has no poison and damage with very low production cost. The invention can completely satisfy various requirements of users.

Description

technical field [0001] The invention relates to a process for producing high-strength gypsum solid bricks, energy-saving hollow blocks, gypsum fiber boards and other building material products by using desulfurized gypsum from industrial waste residues as raw materials and adopting an all-dry method. Background technique [0002] Desulfurization gypsum, the waste generated after desulfurization of soot in power plants, has not been well utilized at present. The continuous increase of these wastes not only occupies the site, but also pollutes the environment, thus becoming a difficult problem for enterprises. For this reason, the country vigorously advocates the comprehensive utilization of chemical gypsum such as desulfurized gypsum and phosphogypsum from industrial waste residues. Simultaneously, the state has made legal provisions to prohibit the use of sintered clay solid red bricks as building materials in building construction. At present, the bricks made of gypsum pow...

AI Technical Summary

Problems solved by technology

[0009] 1. The strength is low; the construction difficulty of rising the wall;

[0010] 2. Due to the addition of a release agent during production; the dust on the inner and outer walls is not sticky, and it will fall off in large pieces after half a year, which has caused great contradictions between suppliers and sellers;

[0011] 3. The density of the cast-molded blocks is not high, and even the expansion screws cannot be grasped tightly during the use of the wall; this increases the difficulty of home decoration;

[0012] 4. The density of the cast-molded blocks is small, which causes the wall surface to stand out during the use of the wall, which completely affects the aesthetics of the decorated wall surface, and there are many complaints from consumers;

[0013] According to the search of Chinese patents, there is no related technology for the production of gypsum building materials by the all-dry process