Open AccessSLUDGE-FREE PRODUCTION OF PURE ALUMINA FROM ROCKS CONTAINING IRON OXIDES AND SILICA
Author(s) -
I.A. Talibli,
G.M. Samedzade,
J.М. Alieva,
A.N. Mammadov,
R.G. Gamidov,
A.M. Gasimova,
G.V. Shadlinskaya
Publication year - 2022
Publication title -
azərbaycan kimya jurnalı/azerbajčan himiâ žurnaly
Language(s) - English
Resource type - Journals
eISSN - 2522-1841
pISSN - 0005-2531
DOI - 10.32737/0005-2531-2022-1-68-72
Subject(s) - aluminium , alkali metal , hydrogen , hydrogen production , extraction (chemistry) , bayer process , chemistry , materials science , phase (matter) , inorganic chemistry , metallurgy , nuclear chemistry , mineralogy , organic chemistry
It has been established that the extraction of aluminum from the rocks containing large amounts of alkali-soluble silicates and iron oxides can be processed by the acid-alkali method, except for the formation of wasted sludge. The carried out thermodynamic analysis showed the possibility of carrying out the process of reduction of a mixture of aluminum and iron sulphate salts with hydrogen. The optimal conditions for the reduction of aluminum and iron sulphates with hydrogen have been found with the production of S2 and SO2 and stub in the gas phase. Pure aluminum is obtained from stubby the Bayer method