Lightweight high-strength porcelain granule manufactured by utilizing paper mill sludge and manufacturing method thereof

Abstract

The invention belongs to the technical field of sludge recovery and resource utilization and in particular relates to a lightweight high-strength porcelain granule manufactured by utilizing paper mill sludge and a manufacturing method thereof. The manufacturing method comprises the following steps: firstly grinding 30-50 parts of construction wastes to obtain ground construction wastes; and uniformly mixing the ground construction wastes with 50-60 parts of paper mill sludge and 40-60 parts of potassium feldspar powder, then roasting the mixture at 1150-1500 DEG C for 20-120 minutes and cooling the product to obtain the lightweight high-strength porcelain granule. According to the invention, by virtue of mixing the paper mill sludge, the construction wastes and the potassium feldspar powder in a certain proportion to give play to the synergistic actions among the materials, the strength of the manufactured lightweight high-strength porcelain granule is as high as 60-120MPa; the lightweight high-strength porcelain granule has better physical and mechanical properties than the common natural stones; and preparation method provided by the invention not only can be used for turning wastes into wealth, but also is beneficial to reduction of environmental pollution, conforms to the national harmlessness, quantitative reduction and resource principles in solid waste treatment and hasobvious economic and social benefits.

Description

technical field [0001] The invention belongs to the technical field of resource recovery and utilization, and in particular relates to a light-weight high-strength ceramic particle produced by using papermaking sludge and a production method thereof. Background technique [0002] With the development of the paper industry and the construction of pollution prevention and control facilities, the sludge generated after the papermaking wastewater is treated by the treatment facilities has become a new source of pollution. Papermaking sludge is a biological solid waste, which not only contains a large amount of cellulose organic matter and plant nutrients such as nitrogen, phosphorus, and potassium, but also contains trace amounts of heavy metals and pathogenic bacteria. Except for some of the papermaking sludge that is comprehensively utilized, the rest is disposed of in sanitary landfills, requiring more than 70 mu of landfill every year, which not only wastes land resources, b...

AI Technical Summary

Problems solved by technology

However, this manufacturing method needs to dehydrate the sewage first, and the production efficiency is low, resulting in a waste of resources and increasing the cost. Moreover, because the technical solution only uses sludge as a component and does not contain chemical components that can improve product strength, it can only be used The ceramsite with low strength and poor mechanical properties can be obtained, and the ceramic particles with light weight, high strength and good mechanical properties cannot be obtained.