Device for producing alumina clinker by semi-dry process

A kind of technology of alumina and semi-dry method, which is applied in the direction of alumina/hydroxide, etc., can solve the problems of high cost of alumina clinker, and achieve the effects of reducing pollution, shortening length and reducing energy consumption

Active Publication Date: 2011-09-14
NORTHEASTERN UNIV ENG & RES INST CO LTD
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Problems solved by technology

[0003] Aiming at the problem of high cost of producing alumina clinker by the existing wet method, the present invention provides a device for producing alumina clinker by semi-dry method

Method used

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  • Device for producing alumina clinker by semi-dry process
  • Device for producing alumina clinker by semi-dry process

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Embodiment 1

[0047] The structure of the device for producing alumina clinker by semi-dry method is as follows: figure 1 As shown, it includes rotary kiln 1, cooler 2, rotary kiln burner 3, cyclone separator, electric dust collector 25, drying crusher 5, screw conveyor 13, primary conveyor 22, hoist 21, powder Stock bin 18, secondary conveyor 23, slurry mixing tank 19 and hot blast stove 9; among them, three cyclone separators are arranged between the rotary kiln 1, the electric dust collector 25 and the drying crusher 5, and one cyclone separator serves as The dust collector 8 and the other two cyclone separators are respectively used as the first-level suspension preheater 7 and the second-level suspension preheater 6. The gas outlet of the rotary kiln 1 is connected with the outlet of the first-level suspension preheater 7 and The air inlet of the secondary suspension preheater 6 is connected, the feed port of the rotary kiln 1 is communicated with the discharge port of the secondary su...

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Abstract

A device for producing alumina clinker by a semi-dry process is characterized in that: three cyclone separators are disposed among a rotary kiln, a dust collector and a dryer crusher; an air inlet of a deduster is communicated with an air outlet of the dryer crusher through a pipeline; an air outlet of the deduster is communicated with an air inlet of the dust collector through a pipeline; an airoutlet of a primary suspension preheater is communicated with an air inlet of the dryer crusher through a pipeline; and the pipeline connecting the primary suspension preheater with the dryer crusheris also communicated with an air outlet of a hot-blast stove. The device of the invention can greatly decrease energy consumption, reduce pollution, and save cost; the length of the rotary kiln required for producing the same amount of products is shortened by 20-25%; the productivity is increased by 30-50%; and the energy consumption of unit product is decreased by above 30%; compared with alumina clinker production by a dry process, the production with the device of the invention does not require a lot of reconstruction of traditional equipment, and is realized by simply adjusting present equipment, and the device has convenient operation, and simple and practical effects.

Description

technical field [0001] The invention relates to an alumina clinker preparation device, in particular to a semi-dry method for producing alumina clinker. Background technique [0002] At present, domestic sintering method adopts wet process to produce alumina clinker, and the moisture content of the raw material entering the kiln is as high as 39%. Due to the poor heat exchange of materials in the wet process kiln, the clinker production capacity per unit volume is low, and the thermal efficiency is low. The heat consumed by the raw material is about 6280MJ (1500MCal), which not only wastes a lot of energy, but also requires the size of the rotary kiln to be increased, occupying a large area and increasing the investment. Contents of the invention [0003] Aiming at the problem of high cost of producing alumina clinker by the existing wet method, the invention provides a device for producing alumina clinker by a semi-dry method. [0004] A device for producing alumina clin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/02
Inventor 黄玉婷王宁赵成朋史玉娟黎娜王新军
Owner NORTHEASTERN UNIV ENG & RES INST CO LTD
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