FIELD: chemistry.
SUBSTANCE: invention relates to extraction of metallic cobalt, ruthenium and aluminium from used catalyst Co-Ru/Al2O3 for Fischer-Tropsch synthesis. Catalyst is subjected to exposure by calcination and restorative treatment. At that, cobalt residue is separated at alkali melting stage, then it is leached. Cobalt is deposited using oxalic acid or ammonium oxalate. Obtained cobalt oxalate is treated to produce Co(NO3)2 6H2O. Ruthenate is subjected to exposure to produce β-RuCl3 xH2O high purity product. Aluminium hydroxide is obtained from meta-aluminate solution by carbonisation, then calcined to obtain first class aluminium oxide.
EFFECT: higher extraction of cobalt, ruthenium and aluminium is ensured.
15 cl, 1 dwg, 1 tbl, 3 ex
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