The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 27, 1978
Filed:
Nov. 05, 1976
Eddie C Chou, Arvada, CO (US);
Craig B Barlow, Wheatridge, CO (US);
Dale K Huggins, Arvada, CO (US);
Amax Inc., Greenwich, CT (US);
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.