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Clinker cooling method through sintering process

A cooling method and technology of sintering method, applied in the field of clinker cooling technology, can solve the problems of poor cooling effect, low heat utilization rate, low net clinker dissolution, etc., achieve fast cooling speed, high heat utilization rate, and improve thermal efficiency The effect of efficiency

Inactive Publication Date: 2014-10-01
GUIZHOU BRANCH CHINA ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the clinker dissolution of sintering method at home and abroad generally adopts the method of "cooler + lifting plate cooling", which has poor cooling effect, low heat utilization rate, and the temperature of clinker out of the cooler is about 200 °C.
There are many large pieces of material in the clinker, and the discharge port of the dissolution mill is often blocked, which affects the discharge amount of the dissolution mill
At the same time, due to the high temperature of the clinker out of the cooler and the certain plasticity of the clinker, the dissolution effect is poor, and the net dissolution of the clinker is low, with an average net dissolution of about 86%.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A φ4.5×110m clinker kiln is used, equipped with a φ4.5×50m cooler. After the clinker is sintered, it falls from the kiln head of the clinker kiln, and a fan is used to send cold air and air from the fluidized bed cooler through the fluidized bed cooler. The preheating air from the cooler rapidly cools the high-temperature clinker (that is, the temperature is above 700 degrees), so that the high-temperature clinker becomes the clinker of medium temperature (that is, the temperature is between 400-700 degrees). The preheated air is returned to the rotary kiln for secondary use; the lifting plate installed at the end of the cooler close to the fluidized bed cooler lifts the medium temperature clinker obtained after cooling in the above steps, so that the medium temperature clinker and the cooling The preheated air from the machine conducts heat exchange to further cool the clinker, and the preheated air enters the fluidized bed cooler to further increase the temperature. ,...

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PUM

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Abstract

The invention relates to a clinker cooling method through a sintering process, and particularly relates to a clinker cooling process combined in such a way that a fluidized bed type cooler, a cooling machine and a raising plate are combined. The cooling speed of the clinker is fast, therefore the clinker can be cooled during 15-20 min; the clinker of the cooler is low in temperature and fine in granularity, more than 80% of clinker granularity can reach within 15mm, and the discharging temperature can reach up to 97 DEG C and is reduced by about 100 DEG in comparison with that before the implementation; furthermore, the heat use ratio is high, the clinker can be quickly cooled, and the hot air can be reused, therefore the thermotechnical efficiency can be improved.

Description

technical field [0001] The invention relates to a clinker cooling method by a sintering method, in particular to a clinker cooling process using a combination of a fluidized bed cooler, a cooler and a lifting plate. Background technique [0002] At present, the method of "cooler + lifting plate cooling" is generally adopted for clinker dissolution in domestic and foreign sintering methods, which has poor cooling effect and low heat utilization rate. There are many bulk materials in the clinker, and the discharge port of the dissolution mill is often blocked, which affects the discharge amount of the dissolution mill. At the same time, due to the high temperature of the clinker out of the cooler and the plasticity of the clinker, the dissolution effect is poor, and the net dissolution of the clinker is low, with an average net dissolution of about 86%. SUMMARY OF THE INVENTION [0003] Aiming at the problems existing in the above-mentioned prior art, the present invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D15/02C01F7/02
CPCY02P20/129
Inventor 郭庆山张占明郝向东任巨金马文选张志军李建玮李云中
Owner GUIZHOU BRANCH CHINA ALUMINUM IND