FIELD: metallurgy.
SUBSTANCE: procedure for extracting metals of platinum group consists in sulphatisation of source raw stock using oxidant and in successive water leaching. As source raw stock there are used chromites. Chromites are sulphidised at liquid: solid ratio =4:1-6:1 in water solution of sulphuric acid with concentration 85-93 % wt at temperature 150-170°C. As oxidant there is used chromium oxide CrO3 taken at amount of 70-80 % wt of iron contents in chromite.
EFFECT: raised complexity of raw stock utilisation and increased extraction of platinum metals.
1 tbl, 5 ex
| Title | Year | Author | Number |
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