发明名称 METHOD OF DEEP ALUMINATE SOLUTIONS DESILICONISATION
摘要 FIELD: metallurgy.SUBSTANCE: invention relates to alumina production, in particular aluminate solutions desiliconisation during alumina production out of high-silicon aluminium raw material. Method of deep aluminate solutions desiliconisation means lime treatment by aluminate-alkali solution with production of alumo-calcic element, two-stage desiliconisation of aluminate-alkali solutions with use of the produced alumo-calcic element as intensifying additive, concentration and filtration of desiliconisation products, clearing of desiliconised solution, according to the invention sludge of the second stage of desiliconisation is injected to the cleared aluminate solution after the first stage of desiliconisation, exposition of the produced pulp is performed for 30 minutes, and then to the pulp the alumo-calcic element is added by two successive portions with interval 30 minutes in amount 50% of total need of the injected chemical.EFFECT: invention reduces consumption of alumo-calcic element to 1,7÷2,6 g/l of CaOin its composition to achieve practically complete separation of Al(III) and Si(IV) ions in strong electrolyte, produces alumina of high makes "?"-00 and "?"-000, and increases technical and economic parameters of the alumina production out of high-silicon raw material.2 dwg, 12 ex
申请公布号 RU2560413(C2) 申请公布日期 2015.08.20
申请号 RU20130151026 申请日期 2013.11.15
申请人 FEDERAL'NOE GOSUDARSTVENNOE BJUDZHETNOE OBRAZOVATEL'NOE UCHREZHDENIE VYSSHEGO PROFESSIONAL'NOGO OBRAZOVANIJA "NATSIONAL'NYJ MINERAL'NO-SYR'EVOJ UNIVERSITET "GORNYJ" 发明人 SIZJAKOV VIKTOR MIKHAJLOVICH;BRICHKIN VJACHESLAV NIKOLAEVICH;SIZJAKOVA EKATERINA VIKTOROVNA;VASIL'EV VLADIMIR VIKTOROVICH
分类号 C01F7/16 主分类号 C01F7/16
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