Externally-hung light stone molded by desulfurized gypsum industrial waste residues and method thereof

Abstract

The invention relates to an externally-hung light stone material by desulfurized gypsum industrial waste residues, which comprises the following components by weight percentage: 40.0%-50.0% of desulfurized gypsum; 29.85%-40.25% of magnesium oxide, 10.0%-15.0% of magnesium sulfate, 0.15%-0.25% of citric acid, 0.10%-0.25% of a water reducing agent, 0.50%-0.80% of polymer powder, 2.50%-3.20% of fibers and 0.5%-1.0% of pigment. The magnesium oxide is selected from white powder with the calcination temperature of 400 DEG C, and the mesh number of 400 and the industrial grade purity of 90% or above.The water resistance of the magnesium oxysulfate cement and the toughness and strength of the artificial stone are improved, the density of the artificial stone is greatly reduced due to a large number of micropores contained in the magnesium oxysulfate cement, and multiple functions of heat preservation, heat insulation, humidity adjustment, sound insulation and the like of the artificial stoneare achieved. The industrial waste residue desulfurized gypsum is safely and reliably treated, and the utilization rate is as high as 40% or above.

Description

technical field [0001] The invention belongs to IPC classification C04B building materials similar to artificial stones, and relates to a molding stone preparation technology, in particular to molding and hanging lightweight stones and methods using desulfurized gypsum industrial waste residue. Background technique [0002] In modern architectural decoration projects, represented by public buildings, the exterior walls of buildings tend to be decorated with external stone materials. However, some inherent defects of natural stone, such as large specific weight and poor processability, make its application cost in external decoration projects more and more expensive, and natural stone resources are gradually scarce, which also makes related industries and consumption unsustainable. Correspondingly, artificial stones continue to emerge and become a substitute for natural stones. [0003] After searching the documents of the prior art, it is found that relevant patent document...

AI Technical Summary

Problems solved by technology

[0004] Chinese patent application CN101007727A discloses an external cement-based artificial molded stone material. A molded stone material is prepared by casting and molding with white cement, limestone crushed material, zeolite powder, resin powder and pigments. It has good texture and durability, but Due to the use of cement and gravel as the main materials, its specific gravity is relatively large and its function is single

[0009] However, from the point of view of manufacturing raw material technology and cost, these existing artificial stones are expensive and do not have a competitive advantage in the market