Verfahren zur Beseitigung von Molybdaenverunreinigungen aus nickel-,eisen- und schwefelhaltigen Produkten
1319503 Removal of Mo from Ni-containing residues SHERRITT GORDON MINES Ltd 16 Nov 1970 [7 Jan 1970 18 Sept 1970] 54459/70 Heading C1A Molybdenum is removed from residues containing Ni, Fe and S and possibly Cu, Co, Cr or W by mixing with the latter, before and/or during pelletizing of the same usin...
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| creator | MEHL.ERNEST KAWULKA,PAUL WEIZENBACH,BAUKE |
| description | 1319503 Removal of Mo from Ni-containing residues SHERRITT GORDON MINES Ltd 16 Nov 1970 [7 Jan 1970 18 Sept 1970] 54459/70 Heading C1A Molybdenum is removed from residues containing Ni, Fe and S and possibly Cu, Co, Cr or W by mixing with the latter, before and/or during pelletizing of the same using water, an alkali in an amount equivalent to a residue-to- NaOH weight ratio of from 20 : 1 to 3 : 1; roasting the pellets at 540-870C. with a source of oxygen (e.g. air or steam) present to convert substantially all of the Mo into watersoluble alkali metal molybdates; quenching the roasted, pelletized mixture in water and agitating the slurry to extract and dissolve the molybdates; and finally separating the solution from the Ni-containing residue. Tungsten, if present in the original residue, may also be removed as water-soluble tungstates. The alkali to be used is preferably NaOH, KOH, Na 2 CO 3 , K 2 CO 3 or Na 2 S or mixtures of these. |
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Tungsten, if present in the original residue, may also be removed as water-soluble tungstates. 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Tungsten, if present in the original residue, may also be removed as water-soluble tungstates. 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Tungsten, if present in the original residue, may also be removed as water-soluble tungstates. The alkali to be used is preferably NaOH, KOH, Na 2 CO 3 , K 2 CO 3 or Na 2 S or mixtures of these.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F FERROUS OR NON-FERROUS ALLOYS INORGANIC CHEMISTRY METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS SEPARATION TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS |
| title | Verfahren zur Beseitigung von Molybdaenverunreinigungen aus nickel-,eisen- und schwefelhaltigen Produkten |
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