Lightweight wallboard manufactured by utilizing paper mill sludge and manufacturing method thereof

Abstract

The invention belongs to the technical field of lightweight wallboards and in particular relates to a lightweight wallboard manufactured by utilizing paper mill sludge and a manufacturing method thereof. The lightweight wallboard is manufactured from the following raw materials in parts by weight: 50-60 parts of paper mill sludge, 30-50 parts of construction wastes, 40-60 parts of potassium feldspar powder, 10-40 parts of fly ash and 40-60 parts of cement. The adopted paper mill sludge dispenses with dehydration and drying and can be used directly, therefore the energy is saved, the cost is low and the production efficiency is high; the manufactured lightweight wallboard has low shrinkage, light weight and high compression strength; the compression strength is as high as 60-120MPa; the lightweight wallboard has better physical and mechanical properties than the common natural stones; and plenty of construction wastes, paper mill sludge and fly ash are used, therefore the manufactured product has low cost and high economic benefit, and the method not only can be used for turning wastes into wealth, but also is beneficial to reduction of environmental pollution and has obvious economic and social benefits.

Description

technical field [0001] The invention belongs to the technical field of lightweight wallboards, in particular to a lightweight wallboard made from papermaking sludge and a manufacturing method thereof. Background technique [0002] In order to meet the different needs of the construction market, wall materials such as thermal insulation wall panels, sound insulation wall panels, exterior wall panels, and decorative wall panels have appeared on the market. The country and localities and relevant departments have clearly stipulated that wallboard should be listed as a new type of wall material that is mainly supported for development. The location of the wallboard is different, and its raw material composition and production process requirements are also different. Multiple varieties and serialization are the needs of the development of the situation. [0003] At present, in the production of existing light wall materials in China, Chinese invention patent ZL200610070220.7 int...

AI Technical Summary

Problems solved by technology

[0005] However, the above lightweight wallboards have high shrinkage rate and poor compressive strength, especially the compressive strength is far from meeting the requirements, so they cannot be used in occasions with high compressive requirements.