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Vsesojuzny Nauchno-issledovatelsky I Proektny Institut Aljuminievoi,

Pavel S Vladimirov

Ivan M Kostin

Alexei I Alexeev

Viktor M Sizyakov

Nikolai A Kaluzhsky

Isaak A Zatulovsky

Nikolai S Shmorgunenko

Leonid I Finkelshtein

Evgeny A Isakov

Georgy P Tkachenko

Evgenia S Ostrovlyanchik

Oleg V Alexeev

Galina M Vysotskaya

Viktor S Kutsenko

Leonid F Bilenko

Khoren A Badaiants

Vitaly L Aronzon

Leonid I Finkelshtein, Deceased

Vinetsy I Chernov

Evgeny I Mironov

Julia L Finkelshtein, Administrator

Nina J Finkelshtein, Administrator

Zarya N Alexandrova

Valentin N Afanasiev

Alexandr G Zhukov

The present invention relates to the production of alumina and, more specifically, to a process for desilication of aluminate solutions. The process of desilication according to the present invention comprises treatment of the aluminate solution first with a calcium-containing reagent 'a' which is a product of the reaction of desilication of the aluminate solution; reagent 'a' contains mainly calcium hydrogarnet of the formula:

Process for desilication of aluminate solution

An improved method for recovering aluminum values from alkaline aluminosilicate raw material by sintering a comminuted aqueous mixture of the alkaline aluminosilicate material, limestone and soda solution wherein the alumino-silicate material is first comminuted with the soda solution to form a mixture with a fraction of particles larger than 0.08 mm greater than 20 percent by weight, mixing limestone with the mixture and comminuting until the fraction of particles larger than 0.08 mm is between 2 and 15 percent by weight.

Method for the production of alumina

Growing community of inventors

Saint-Petersburg, Russia

Pavel S Vladimirov