Method for baking clay ceramsite by using biological sludge of sewage treatment plant

A sewage treatment plant and biological sludge technology, which is applied in the field of using sewage treatment plant biological sludge to burn clay ceramsite, can solve the problems of occupying a large amount of land, incapable of resource utilization, and serious environmental pollution.
CN1367156AInactive Publication Date: 2002-09-04SOUTH CHINA UNIV OF TECH
0 Cites 22 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2002-09-04
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The present invention relates to a method for baking clay ceramsite by using biological sludge produced by sewage plant. Its raw material composition contains (wt%) clay 71-89%, dried biological sludge of sewage plant 6-21%, limestone 3-8% and iron powder 2-6%. This invention uses the biological sludge produced by sewage plant as useful resource to bake high-quality ceramsite instead of partial clay, and can save firing expansion agent and mineralizing agent so that it possesses the extensive application.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a firing technology of clay ceramsite, in particular to a method for firing clay ceramsite by utilizing biological sludge of a sewage treatment plant. Background technique

[0002] Clay ceramsite refers to a kind of artificial inorganic light aggregate made by using clay as the main raw material, adding solid fuel (such as bituminous coal powder), mixing, forming into balls and sintering at high temperature. Because it has fine pores inside, it has the characteristics of light bulk density, high strength, small thermal conductivity, high refractoriness and good chemical stability, so it has better physical properties than natural aggregates, and can be used to prepare various high-strength and light-weight aggregates. Concrete and thermal insulation, sound absorption and sound insulation and other functional materials and products are widely used in construction, metallurgy, chemical industry, petroleum, agriculture and other d...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More