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2 175 640

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IPC

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Application

99102142/12, 1999-02-02

(24)

Start date

1999-02-02

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Actual filing date

1999-02-02

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Published

2001-11-10

(72)

Inventor

Kopytov G.G.Aminov A.N.Chernabuk Ju.N.Frolov S.I.

(73)

Holder

Oao Aljuminievyj Zavod"

BAUXITE LEACHING PROCESS Russian patent published in 2001 - IPC

Abstract RU 2175640 C2

FIELD: inorganic compounds technology. SUBSTANCE: invention relates to production of silica involving autoclave leaching of bauxite. Process consists in continuously pumping bauxite pulp through autoclave installation, said pulp being preheated in preheaters and finally heated in autoclaves to reaction temperature by steam from heat-and-power plant. Steam energy is also used in pump unit. Exhausted steam is withdrawn from cylinders of pump unit and conveyed to pulp preheaters. Pulp gets into pulp unit cylinders and is displaced therefrom through valve box, whereas steam is fed into the same cylinders and is withdrawn therefrom through distributing mechanisms. Cylinders are provided with floats for their longitudinal movement. EFFECT: increased economical efficiency of process. 3 cl, 2 dwg

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RU 2 175 640 C2

Authors

Kopytov G.G.

Aminov A.N.

Chernabuk Ju.N.

Frolov S.I.

Dates

2001-11-10—Published

1999-02-02—Filed

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