Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Iron group metal
Patent
1976-11-05
1978-06-27
Vertiz, O. R.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Iron group metal
75119, C01G 5310
Patent
active
040975754
ABSTRACT:
A method is provided for enhancing the neutralization capability of high-magnesium serpentine silicate ore in the neutralization of nickel-containing pregnant leach solution, said solution having a pH of less than about 1 which comprises, providing said high magnesium serpentine ore in particulate form containing by weight over about 5% magnesium, roasting said ore under oxidizing conditions at a temperature below that temperature at which forsterite in said ore recrystallizes, and then adding an amount of said serpentine roasted ore to said pregnant liquor sufficient to raise the pH of the leach solution to a level above 2.
REFERENCES:
patent: 2384008 (1945-09-01), Brandenburg
patent: 3466144 (1969-09-01), Kay
patent: 3991159 (1976-11-01), Queaneau et al.
Barlow Craig B.
Chou Eddie C. J.
Huggins Dale K.
Amax Inc.
Ciomek Michael A.
Hearn Brian E.
Kalil Eugene J.
Vertiz O. R.
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