Method for producing architectural decoration material on basis of phosphogypsum

Abstract

The invention discloses a method for producing an architectural decoration material on the basis of phosphogypsum. The method comprises the following steps: calcining and pulverizing phosphogypsum; heating a polyvinyl chloride resin to 90-100 DEG C, adding a plasticizer, a stabilizer and a surfactant, uniformly mixing by stirring for 1 minute, adding the phosphogypsum powder prepared in the previous step, continuing stirring and mixing uniformly, heating the powdery material to 160 DEG C, and extruding an extrusion-type granulator to obtain a granular material with the diameter of 5mm or so; and sending the granular material into an extruder to obtain the architectural decoration material. The architectural decoration material produced by the method has the advantages of favorable weather resistance, high corrosion resistance, smooth and beautiful appearance, low flammability, high strength, low cost, high installability and the like. The walling material produced by the method has the advantages of favorable weather resistance, high corrosion resistance, favorable heat insulation and sound insulation effects, low flammability, high strength, low cost and high installability, and is capable of reducing the total weight of the whole building and increasing the usable floor area of the building.

Description

technical field [0001] The invention belongs to the technical field of building decoration materials, in particular to a method for producing building decoration materials based on phosphogypsum. Background technique [0002] Phosphogypsum is an industrial waste discharged from the wet-process phosphoric acid production process in the phosphorus chemical industry. The production of 1 ton of wet-process phosphoric acid (calculated as P2O5) produces 4.5-5 tons of phosphogypsum. At present, the main method of comprehensive utilization of phosphogypsum is to use phosphogypsum to produce sulfuric acid and cement. This method can recover sulfur resources, but the investment is high, and the grade of cement produced is not high; the second is to produce β-hemihydrate Plaster of paris is used for building materials, such as for the production of decorative boards, interior wall partitions, cement retarders, composite mineralizers, refractory materials, etc. However, some of these m...

AI Technical Summary

Problems solved by technology

At present, the main method of comprehensive utilization of phosphogypsum is to use phosphogypsum to produce sulfuric acid and cement. This method can recover sulfur resources, but the investment is high, and the grade of cement produced is not high; the second is to produce β-hemihydrate Plaster of paris is used for building materials, such as for the production of decorative boards, interior wall partitions, cement retarders, composite mineralizers, refractory materials, etc. However, some of these methods are not ideal in quality, some are high in cost, and The dosage is small

Therefore, so far, the vast majority of phosphogypsum discharged by the chemical industry is still processed by slag dumping, which not only encroaches on the land, but also pollutes the environment to a certain extent.