Method for preparing light-weight wallboard by using fly ash

Abstract

The invention relates to a method for preparing a light-weight wallboard by using fly ash. The method comprises material proportioning and a manufacturing process flow, and the material proportioningis as follows: 70-80% of fly ash, 10-15% of waste muck, 10-15% of sludge and a foaming agent with an amount being 0.2-0.8% of the total materials, and the process flow comprises the steps: (1) dryingthe fly ash, waste muck and sludge, and performing sieving; (2) performing ball milling separately; (3) performing metering at a ratio; (4) performing dry stirring on the materials in a mixer for 2 minutes; (5) assembling a mold, laying flame-proof paper on the bottom plate of the mold, packing the powder material, and sending the mold into a sintering kiln; (6) performing preheating, sintering and cooling, performing cooling to 40 DEG C, and sending a cooled lightweight wallboard blank out of the kiln; (7) taking the lightweight wallboard blank out, and cutting the blank into a product with aspecified size and shape according to a drawing; (8) drawing lines, and processing vertical through holes, transverse through holes, vertical threading through holes and transverse threading throughholes; (9) placing vertical reinforcing steel bars in the vertical through holes, and placing transverse reinforcing steel bars in the transverse through holes; (10) pouring hole-pouring concrete intothe vertical through holes and transverse through holes; and (11) performing curing, inspection and storage.

Description

technical field [0001] The invention relates to a method for preparing lightweight wallboards using fly ash, which belongs to the field of industrial solid waste utilization and building energy-saving wall materials, and specifically relates to a method for using fly ash, waste dregs, sludge and other industrial solid waste After being sintered at high temperature, it is machined into a light-weight wallboard with thermal insulation and fireproof functions. Background technique [0002] Fly ash discharged from coal power plants is a solid waste that pollutes the environment and water sources; [0003] Urbanization, accelerated urbanization, and the continuous expansion of shantytown old city reconstruction have produced a large amount of waste residue, which has a greater pollution to the environment and groundwater sources; [0004] The sand washing plant will produce a large amount of sand washing sludge during the sand processing process, the industrial sludge produced b...

AI Technical Summary

Problems solved by technology

Although the country attaches great importance to the fire protection of architectural design, and newly formulated the "Code for Fire Protection of Building Design" GB 50016-2014; however, through the practice in recent years, polystyrene insulation boards are still the mainstay, and inorganic insulation materials only account for a very small part , in this small part of inorganic thermal insulation materials, mainly rock wool, aerated concrete blocks, foam concrete blocks and small pieces of foam glass, etc., cannot form large lightweight wall panels, which can not only replace the wall, but also Replacing the insulation layer, it can be fireproof and durable

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