Device for dissolving out aluminium oxide

An alumina and process technology, applied in the field of alumina production equipment and processes, can solve problems such as difficulty in output

Inactive Publication Date: 2007-01-17
GUIYANG AL-MG DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It will be very difficult to further increase production, and larger equipment and devices must be developed

Method used

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  • Device for dissolving out aluminium oxide

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Experimental program
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Effect test

Embodiment Construction

[0038] Embodiment of the present invention: according to the production capacity of alumina is 500kt / a, the following equipment is selected for matching:

[0039] ①High-pressure diaphragm pump: 2 sets of GEHO pumps are selected, the flow Q=480~550m 3 / h, P=6.0~7.0MPa;

[0040] ② Casing preheater: Six-stage casing preheating is adopted, six casings per stage, each casing length is 90m, and the total casing length is 3240m; the specification of the inner casing is: D325×13~14mm, and the specification of the outer casing is: D402 ×9~10mm;

[0041] ③Pulse buffer: 2 sets, the pressure is 5.2MPa and 7.0MPa respectively, equipment specification: φ2.6×10m, volume 42m 3 ;

[0042] ④ Pressure cooker with heating tube bundle: 16 sets, design pressure 5.2MPa, pressure cooker specification: φ3×18m, volume 100m 3 , heating area 610m 2 ;

[0043] ⑤ Pressure cooker: 5 sets, design pressure 5.2MPa, pressure cooker specification: φ3×18m, volume 100m 3 ;

[0044] ⑥ Flash evaporator: 12 u...

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Abstract

An aluminium oxide stripping apparatus is composed of high-pressure diagphram pump, sleeve pipe preheater, pulse buffer, autoclave with heating tubes, autoclave and flash evaporator. Its advantage is high productivity (500 kt / a).

Description

Technical field: [0001] The invention relates to alumina production equipment and technology, in particular to a dissolution device and technology for alumina production. Background technique: [0002] Over the past ten years, my country's alumina industry has made great progress in large-scale equipment. At present, for the Bayer process alumina production system, the maximum production capacity of a production series can reach 400-450kt / a alumina, which is higher than that in the 1980s. more than 5 times. The large-scale equipment has greatly improved the production capacity and technical equipment level of my country's alumina plants, and the economic benefits have been significantly improved. [0003] Large-scale equipment is the development trend of the alumina industry at home and abroad. It can increase the production capacity of alumina plants, the level of automation equipment and labor productivity, improve technical and economic indicators, and reduce consumption....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/02C01F7/02C01F7/064
CPCC01F7/064C22B3/02C22B21/0015Y02P10/20
Inventor 陈德
Owner GUIYANG AL-MG DESIGN & RES INST
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