Extracting of iron ore and chromium from nickel lateritic ores

Details Extracting of iron ore and chromium from nickel lateritic ores Extracting of iron ore and chromium from nickel lateritic ores

C - Chemistry, Metallurgy

22

B

53/112, 53/121,

C22B 3/00 (2006.01) C22B 34/32 (2006.01)

Patent

CA 1044468

Abstract of the Disclosure Chromium is removed from nickel lateritic ore by sizing the as-mined particulate ore to provide a size fraction of fines in which substantially all of the chromium is in the acid-soluble form and then leaching said soluble chromium from said fines fraction together with nickel and other associated metal values by high pressure leaching at an elevated temperature in an aqueous sulfuric acid solution, such that an iron ore tailings is produced very low in chromium suitable for the recovery of iron therefrom.

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