Desulfurated gypsum board

Abstract

The invention discloses a desulfurated gypsum board. The desulfurated gypsum board is prepared from the following components in parts by weight: 100-150 parts of desulfurated gypsum powder, 20-45 parts of epoxy resin and 1.5-3 parts of glazes. The manufacturing method of the desulfurated gypsum board comprises the following steps: (1), weighing the raw materials in proportion; (2), placing the weighed desulfurated gypsum powder and the epoxy resin to a stirrer for being uniformly stirred, and transferring the uniformly stirred materials to a green body mould to be extruded and formed; (3), heating and maintaining an extruded and formed desulfurated gypsum semi-finished product, and grinding and polishing the desulfurated gypsum semi-finished product; (4), pressing the desulfurated gypsum semi-finished product into a green body by a board press; (5), conveying the pressed desulfurated gypsum board green body to a drying kiln for drying; (6), atomizing and spraying glazes to the dried desulfurated gypsum board green body; and (7), drying the glaze-sprayed desulfurated gypsum board green body in a drying oven. The desulfurated gypsum board disclosed by the invention has the advantages of being hard in texture, green and environment-friendly, free of radioactive toxicity and the like.

Description

technical field [0001] The invention relates to the field of building boards, in particular to a desulfurized gypsum board. Background technique [0002] Coal-fired power generation is the largest emitter of sulfur dioxide, so our government attaches great importance to it. Thermal power plants consume more than 50% of the country's coal while converting chemical energy into electrical energy. Coal ash, desulfurized gypsum and other solid emissions, as the national environmental protection requirements for desulfurization of power plants are getting higher and higher, the output of desulfurized gypsum is increasing, and the environmental pollution caused is also increasing. How to dispose of this large amount of "waste It is the subject of the development of circular economy to turn "things" into important mineral resources. The main component of desulfurization gypsum is calcium sulfate dihydrate crystals. It is made of ester baking paint or fluorocarbon paint, carved alum...

AI Technical Summary

Problems solved by technology

[0002] Coal-fired power generation is the largest emitter of sulfur dioxide, so our government attaches great importance to it. Thermal power plants consume more than 50% of the country's coal while converting chemical energy into electrical energy. Coal ash, desulfurized gypsum and other solid emissions, as the national environmental protection requirements for desulfurization of power plants are getting higher and higher, the output of desulfurized gypsum is increasing, and the environmental pollution caused is also increasing. How to dispose of this large amount of "waste It is the subject of the development of circular economy to turn "things" into important mineral resources. The main component of desulfurization gypsum is calcium sulfate dihydrate crystals. It is made of ester baking paint or fluorocarbon paint, carved aluminum-zinc alloy steel plate, polyurethane insulation layer, and glass fiber cloth; it is mainly used for exterior wall decoration and energy saving of various buildings such as gymnasiums, libraries, school and hospital office buildings, villas, etc. Renovation; the main functions are architectural decoration, heat preservation and energy saving, heat insulation and sound insulation, waterproof and mildew proof, etc. However, the production cost of this kind of exterior wall decorative board is high and it is not suitable for mass consumption