Preparation method of desulphurization gypsum-steel slag expanded perlite foaming insulation board

Abstract

The invention relates to a preparation method of a desulphurization gypsum-steel slag expanded perlite foaming insulation board. The preparation method comprises the following steps: (1) preheating aforming mold plate; (2) uniformly mixing desulphurization gypsum, steel slag, cement and a foaming material according to a proportion, and uniformly mixing water and an additive according to a proportion; (3) mixing powdery mixed materials and liquid mixed materials in the step (2) together, and stirring to obtain viscous composite slurry; (4) stirring and mixing expanded perlite with the composite slurry obtained in the step (3) for 2-4 minutes till the surface of the expanded perlite is wrapped by a layer of composite slurry material, and obtaining a light-weight pre-pressed material; (5) paving lower-layer glass-fiber mesh cloth, the light-weight pre-pressed material obtained in step (4) and upper-layer glass-fiber mesh cloth in sequence from bottom to top on a lower mold plate, pressurizing by an upper mold plate, and compressing to form a plate blank with the compression ratio of 1.1-2.6; (6) using the upper mold plate to maintain pressure on the plate blank for 30-90 minutes under a preheating temperature, and sizing the plate blank; (7) demolding.

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