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Cement clinker shock cooling process adopting material layer self-protection technology

A cement clinker and self-protection technology, applied in the field of cement clinker quenching, can solve the problems of low thermal efficiency, limited quenching area, unsatisfactory heat recovery effect, etc., and achieve the effect of improving clinker quality and ensuring cooling effect

Inactive Publication Date: 2021-04-06
铜川声威建材有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a cement clinker quenching process using material layer self-protection technology, which has a large-area fixed grate bed + thick material layer + air volume regulating valve, truly realizes clinker quenching, and improves the cooling effect while ensuring the cooling effect. Clinker quality; thermal efficiency increased by 2%, the corresponding coal consumption is greatly reduced; heat recovery effect is improved, the advantages of greatly increasing the intermediate air temperature, solve the problem that the three-generation grate cooler has a limited quenching area for clinker, the cooling effect is not strong, and the thermal efficiency is relatively Low, the problem of unsatisfactory heat recovery effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] An embodiment provided by the present invention: a cement clinker quenching process using material layer self-protection technology, the main body of the grate cooler:

[0052] Remove the old third-generation machine NC39325 and replace it with the fourth-generation grate cooler of LANE08-14a;

[0053] Equipped with the new fourth-generation grate cooler hydraulic station (purpose: to control the reciprocating motion of the hydraulic cylinders of various parts through the high-pressure pump and proportional valve of the hydraulic station to realize the number of reciprocating grate beds) and electric control cabinet;

[0054] Equipped with a new dry oil centralized lubrication device (purpose: the dry oil passes through the output oil pump and distributor to lubricate the movable support of each hydraulic cylinder of the grate cooler and the walking wheel bearings of each part of the grate bed) and the electric control cabinet;

[0055] Newly purchased 8 sets of 150 air...

Embodiment 2

[0079] An embodiment provided by the present invention: a cement clinker quenching process using material layer self-protection technology, performance guarantee conditions:

[0080] The temperature of the clinker entering the grate cooler: 1300-1400°C;

[0081] Clinker vertical weight: 1200—1300g / L;

[0082] Clinker output is below the rated output of grate cooler 6000tpd;

[0083] Kiln clinker particle size: the proportion of more than 25mm is less than 20%,

[0084] The proportion of less than 5mm is less than 30%;

[0085] Measurement of the clinker temperature of the grate cooler:

[0086] Screen and measure the round clinker particles below 25mm before crushing, and the particles exceeding 25mm shall not exceed 10%;

[0087] Adopt water-cooling method to carry out the measurement of clinker temperature, get the average value of measurement;

[0088] Operating air volume ≥ l.90Nm3 / kg.cl;

[0089] If the above conditions cannot be met, the clinker temperature of the ...

Embodiment 3

[0093] An embodiment provided by the present invention: a cement clinker quenching process using material layer self-protection technology, the specifications of main parts include:

[0094] Internal steel structure of shell and fixed grate bed: Quantity: 1 set, including: upper and lower shells and internal steel structure of fixed grate bed.

[0095] Movable grate baskets: 1 set, the first air chamber and the last air chamber adopt high-resistance grate plates.

[0096] Fixed grate plate, longitudinal seal, transverse seal.

[0097] The fixed grate adopts a new type of high-resistance grate, and the angle of the fixed bed is designed at 12°.

[0098] Active stringers: 8 sets.

[0099] Supporting device: guide wheel device: 1 set, supporting wheel device: 1 set.

[0100] Transmission device: 1 set, including: 8 displacement sensors;

[0101] The hydraulic transmission system consists of one section, the system rated working pressure: 181Pa, including: axial piston pump, q...

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Abstract

The invention discloses a cement clinker shock cooling process adopting a material layer self-protection technology. An original third-generation grate cooler shell is dismounted and overall replaced with a LANE type tail-mounted rolling fourth-generation grate cooler; all fans are newly purchased, a waste heat power generation air pipe and a coal mill air pipe are installed between a settling chamber above the grate cooler and a mill air inlet, and an auxiliary air pipe is additionally arranged on a waste air pipeline. The cement clinker shock cooling process has the advantages that a large-area fixed grate bed, a thick material layer and an air volume adjusting valve are arranged, clinker shock cooling is truly achieved, and the clinker quality is improved while the cooling effect is guaranteed; the heat efficiency is improved by 2%, and the corresponding coal consumption is greatly reduced; the heat recovery effect is improved, and the middle air temperature is greatly increased.

Description

technical field [0001] The invention relates to the technical field of cement clinker quenching, in particular to a cement clinker quenching process adopting material layer self-protection technology. Background technique [0002] Cement clinker is a semi-finished product obtained by using limestone, clay, and iron as the main raw materials, which are prepared into raw meal in an appropriate proportion, burned until part or all of it is melted, and cooled. In the cement industry, the most commonly used Portland cement clinker is mainly composed of calcium oxide, silicon dioxide and a small amount of aluminum oxide and iron oxide. The main mineral composition is tricalcium silicate, dicalcium silicate, tricalcium aluminate and tetracalcium aluminoferrite. [0003] The clinker cooler is a heat exchange device that transfers heat from high-temperature clinker to low-temperature gas. As a process equipment, it undertakes the task of quenching the high-temperature clinker; as a...

Claims

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Application Information

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IPC IPC(8): F27D15/02C04B7/47C04B7/48
CPCF27D15/0213C04B7/47C04B7/48
Inventor 李文杰张桂南胡鹏刚杨书伟朱建宏
Owner 铜川声威建材有限责任公司
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