Method for producing ceramsite by utilizing sludge made from mono-nitro methylbenzene

A technology of mononitrotoluene and sludge, which is applied in the production and application of ceramic materials, clay products, etc., to achieve the effects of good energy saving and environmental protection, easy access to raw materials, and low cost

Active Publication Date: 2015-05-06
林梅
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] There are a large number of documents at home and abroad on the use of sludge to produce ceramsite, and there are more and more patents in this area, but the method of using mononitrotoluene to produce sludge, municipal sludge and bentonite to burn ceramsite is still a blank

Method used

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Embodiment Construction

[0027] The preferred embodiments of the present invention will be described in detail below, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0028] The method that utilizes the sludge that mononitrotoluene is produced to make ceramsite provided by the present invention may further comprise the steps:

[0029] The first step, raw material equipment: (1) mononitrotoluene production sludge, which is formed by mixing the waste water generated in the production process of mononitrotoluene with other waste water for biochemical treatment after physical and chemical treatment, with a water content of 60%- 70%;

[0030] (2) Municipal sludge, which is formed from raw sludge produced by urban sewage treatment plants, with a moisture content of 75%-85%;

[0031](3) Bentonite, with montmorillonite as the main component, is used after drying...

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Abstract

The invention discloses a method for producing ceramsite by utilizing sludge made from mono-nitro methylbenzene, and belongs to a harmless and recycling technology of solid harmful waste. The method comprises the steps of rolling, stirring and uniformly mixing mono-nitro methylbenzene produced sludge, municipal sludge and bentonite to obtain a mixture, fermenting the mixture in a specific environment, then extruding and granulating the mixture to obtain a ceramsite preform body, drying the ceramsite preform body, roasting the ceramsite preform body at a high temperature, sintering and expanding the ceramsite preform body to form ceramsite, and cooling the ceramsite to the normal temperature, wherein cavings are preferably selected as fuels for a rotary kiln. The produced ceramsite meets the requirement of the national light aggregate building material, not only is the harmless treatment of the sludge produced in the production process of the mono-nitro methylbenzene is efficiently realized, the municipal sludge is recycled, the emission is efficiently controlled in the entire process, no secondary pollution is produced, and the economic benefit and the social benefit can be synchronously improved.

Description

technical field [0001] The invention discloses a method for making ceramsite by using sludge produced by mononitrotoluene, which belongs to the recycling technology of harmless and resourceful solid hazardous waste. Background technique [0002] In recent years, with the continuous improvement of people's living standards and industrialization process in our country, the material consumption of the whole society has increased rapidly, followed by the generation of a large amount of waste and the resulting harm to the environment. According to statistics, the world produces more than 400 million tons of hazardous waste every year, among which industrial and mining industries such as chemical industry, metallurgy, printing and dyeing are the main sources of hazardous waste. Improper disposal of hazardous waste will not only cause serious harm to human health and the environment, but also cause pollution of groundwater, surface water and soil. Therefore, hazardous waste is one ...

Claims

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Application Information

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IPC IPC(8): C04B33/132
CPCY02P40/60
Inventor 不公告发明人
Owner 林梅
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