A preparation method of desulfurized gypsum-steel slag expanded perlite foam insulation board

Abstract

The invention relates to a preparation method of desulfurized gypsum-steel slag expanded perlite foam insulation board: (1) preheating the forming template; (2) mixing desulfurized gypsum, steel slag, cement and foaming materials evenly in proportion, and Water and admixture are mixed evenly in proportion; (3) Mix the powder mixture and liquid mixture in step (2), and stir to obtain a viscous composite slurry; (4) Proportionally mix the expanded perlite Stir and mix with the composite slurry obtained in step (3) for 2-4 minutes until the surface of the expanded perlite is uniformly covered with a layer of composite slurry material to obtain a lightweight pre-compressed material; (5) Lay it on the lower formwork from bottom to top The lower layer of glass fiber mesh, the lightweight pre-press material obtained in step (4) and the upper layer of glass fiber mesh are pressurized by the upper template and compressed to form a slab with a compression ratio of 1.1~2.6; (6) The upper template is Pressurize the slab for 30-90 minutes at the preheating temperature to shape the slab; (7) Demoulding.

Description

technical field [0001] The invention relates to the technical field of building heat preservation, in particular to a preparation method of a desulfurized gypsum-steel slag expanded perlite foam heat preservation board. Background technique [0002] With the implementation of the 75% building energy-saving standard and the further improvement of fire protection regulations, higher requirements are also put forward for wall insulation materials. Although traditional organic thermal insulation materials such as polystyrene foam board and phenolic plastic foam board have good thermal insulation properties, their flammability limits their application. Pure inorganic foam insulation materials have excellent fire performance, but the disadvantages of high density and thermal conductivity limit their application. Therefore, insulation materials that can meet both energy-saving standards and fire protection regulations have become a research hotspot. [0003] During the rapid devel...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above problems, the present invention provides a method for preparing desulfurized gypsum-steel slag expanded perlite foam insulation board. The desulfurized gypsum and steel slag are processed and mixed with expanded perlite to prepare thermal insulation materials, which saves resources and solves the problems of desulfurized gypsum and expanded perlite at the same time. Steel slag pollutes the environment and occupies land