The results of research in the field of development of complex processing of alunite ore from the Zaglig deposit of Azerbaijan are presented. An ammonia-alkaline ore processing method is proposed, which provides for the extraction of alkali metal sulfates (K₂SO₄, Na₂SO₄) at the beginning of the technological process during the leaching of alunite ore. To recover alkali metal sulfates from dehydrated ore to ammonia processing, the dehydration product is leached with a slightly alkaline (0.5% NaOH) solution. After extraction of alkali sulfates from the ore, the solid insoluble residue is subjected to ammonia leaching. In this case, only ammonium sulfate passes into the solution, which is used as a fertilizer. Thus, the separation of alkali metal sulfates from the ore at the beginning of processing improves the conditions for subsequent hydrochemical processes. the following average values of the degrees of extraction of alkali metals and aluminum into the solution from leaching were determined, (%): Na⁺ = 90.93; K⁺ = 96.42; Al⁺³ = 0.055. Aluminum oxide, which is part of alunite, remains in the sediment under optimal leaching conditions. Aluminum oxide, which is not part of the alum part of alunite, that is, associated with silicate in kaolinite, is also not extracted  and remains in the undissolved precipitate

doi.org/10.32737/0005-2531-2023-1-122-128