A kind of treatment method of burning polluted soil in cement kiln

A treatment method and technology for polluted soil, applied in cement production and other directions, can solve the problem of sludge industrial hazardous waste not being properly disposed of, and achieve the effects of reduced treatment costs, stable working conditions, and large treatment capacity.

Active Publication Date: 2018-04-24
安吉纳海环境有限公司
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Problems solved by technology

There are a large number of sewage treatment plants, industrial and mining and chemical enterprises in my country, and most of their sludge, polluted soil and industrial hazardous waste have not been properly disposed of

Method used

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  • A kind of treatment method of burning polluted soil in cement kiln

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Embodiment Construction

[0029] Such as figure 1 Shown, the processing method of a kind of cement kiln incineration polluted soil (water content about 10% sludge, particle size is not more than 200mm) of the present embodiment comprises the following steps:

[0030] A. Contaminated soil (sludge with a water content of about 10%, particle size ≯200mm) is transported by a special loading vehicle, first passed through the ground scale in the factory (using the original) for preliminary measurement, and then unloaded to the contaminated soil anti-blocking unloading bin;

[0031] B. The polluted soil in the unloading bin enters a multi-stage impact crusher 1 for crushing treatment. The crushing capacity of the crusher is 40t / h, and the crushing particle size is <5mm;

[0032] C. The broken polluted soil stacker 2 is transported to the finished product stacking shed for stacking and homogenizing storage;

[0033] D. A reclaimer is installed in the stacking shed, and the materials taken out are transported ...

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Abstract

The invention relates to a treatment method of cement kiln incineration polluted soil. The method aims to implement stabilization, reduction, harmless treatment and recovery of polluted soil. The scheme is as follows: the method comprises the following steps: A. polluted soil is transported into the factory and subjected to platform balance metering, and enters a polluted soil crusher anti-blocking discharge bin; B. the polluted soil enters a multistage impact crusher and is subjected to crushing treatment; C. the polluted soil is sent into a finished product stocking shed by a stocker and subjected to stocking and homogenized storage; D. the material is transported and poured by a special polluted soil truck into an anti-blocking discharge hopper; E. the material is directly conveyed by a metering conveyor into a cone below a dripping box in a kiln tail decomposition furnace; F. high-temperature gas of the kiln tail decomposition furnace is used for evaporating moisture in the polluted soil, the polluted soil is incinerated, the incineration ash enters a rotary kiln, and the waste slag is directly used as a cement raw material; and G. hot fume after polluted soil incineration enters a kiln tail system and performs heat exchange with an in-kiln crude material, and meanwhile, part of harmful substances are decomposed. The method is suitable for treating polluted soil.

Description

technical field [0001] The invention relates to a treatment method for burning polluted soil in a cement kiln, which is mainly used in the polluted soil treatment industry. Background technique [0002] At present, the treatment and disposal technologies of sludge in sewage treatment, polluted soil from industrial and mining enterprises and industrial hazardous waste are still in their infancy in my country. The secondary pollution caused by direct discharge of sludge, polluted soil and industrial hazardous waste and the occupation of land resources and The reduction of the normal use capacity of domestic waste landfills has attracted sufficient attention from all over the world. There are a large number of sewage treatment plants, industrial and mining and chemical enterprises in my country, and most of their sludge, polluted soil and industrial hazardous waste have not been properly disposed of. How to scientifically and rationally treat municipal sludge produced by sewage...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/24C04B7/43C04B7/44
CPCC04B7/24C04B7/432C04B7/44Y02P40/10
Inventor 郑慧关姝理雷军彦何凯江东
Owner 安吉纳海环境有限公司
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