Author: Edward MorricePublisher:
ISBN:
Category : Flotation
Languages : en
Pages : 298
Book Description
Pilot Mill Flotation of Serpentinized Platinum-palladium Ore from the Stillwater Complex
Author: Edward MorricePublisher:
ISBN:
Category : Flotation
Languages : en
Pages : 298
Book Description
Pilot Mill Flotation of Serpentinized Platinum-palladium Ore from the Stillwater Complex
Author: Edward MorricePublisher:
ISBN:
Category : Flotation
Languages : en
Pages : 20
Book Description
Pilot Mill Flotation of Anorthositic Platinum-palladium Ore from the Stillwater Complex
Author: Edward MorricePublisher:
ISBN:
Category : Flotation
Languages : en
Pages : 16
Book Description
Report of Investigations
Author: Recovery of Platinum, Palladium, and Gold from Stillwater Complex Flotation Concentrate by a Roasting-leaching Procedure
Author: Publisher:
ISBN:
Category : Flotation
Languages : en
Pages : 20
Book Description
The Bureau of Mines devised a procedure for selectively extracting platinum-group metals (PGM) and gold from Stillwater Complex flotation concentrate. The Stillwater Complex is the only major U.S. PGM resource. Development of a suitable extraction technique will contribute to its exploitation. The concentrate was roasted at 1,050° C to convert host base-metal sulfides to oxides and the PGM from sulfide minerals to their elemental states. The roasted concentrate was preleached with dilute sulfuric acid to remove easily soluble gangue minerals. After pre-leaching, the concentrate was slurried with 6M HCI and leached at ambient temperature and pressure with a strong-oxidizing agent. Hydrogen peroxide, chlorine, sodium hypochlorite, nitric acid, and a persulfate salt were the oxidants investigated. The two-stage leaching scheme ex-tracted up to 97 pct of the platinum, 92 pct of the palladium, and 99 pct of the gold from the roasted concentrate. The base metals were not solubilized and reported to the residue. No attempt was made to devise a procedure to recover the copper and nickel because they comprise less than 5 pct of the value of the concentrate. Viable techniques for recovering the precious metals from the pregnant solution were sulfide precipitation, cementation with nickel, or adsorption on activated carbon.
New Publications
Author: United States. Bureau of MinesPublisher:
ISBN:
Category : Mineral industries
Languages : en
Pages : 648
Book Description
Monthly Catalogue, United States Public Documents
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1252
Book Description
Monthly Catalog of United States Government Publications
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 956
Book Description
List of Bureau of Mines Publications and Articles ... with Subject and Author Index
Author: United States. Bureau of MinesPublisher:
ISBN:
Category : Mineral industries
Languages : en
Pages : 646
Book Description
List of Bureau of Mines Publications and Articles ... with Subject and Author Index
Author: United States. Bureau of Mines. Branch of Editorial ServicesPublisher:
ISBN:
Category : Mineral industries
Languages : en
Pages : 658
Book Description