Recover Cobalt in Copper Leach Solution by Ion Exchange
Significant amounts of cobalt, a strategic and critical metal, are present in some secondary sources such as spent copper leach solutions. The United States currently imports over 95 pct of its cobalt supply, much of it from Africa. Development of a process to recover cobalt from readily accessible spent copper leach solutions would help meet […]
Recover Cobalt & Copper from Sulfide Concentrates
Cobalt is a critical and strategic metal because of its essential defence related uses and the high degree of U.S. import reliance for its supply. Currently, the United States does not produce any cobalt from domestic mines. Most of the U.S. supply of cobalt is imported from the African nations of Zambia and Zaire CO-4 […]
Cobalt Sorption in Ion-Exchange Column
The Bureau has developed a process using ion exchange to extract cobalt, a strategic and critical metal, from domestic copper leach solutions. These solutions are produced by dump or heap leaching of low-grade ores with dilute sulfuric acid and contain significant amounts of readily accessible cobalt. Although the cobalt concentrations in these streams are only […]
Electrogalvanizing using Recycled Zinc
A major problem facing the metals industry in the United States and perhaps throughout the world is the disposition of waste oxide dusts generated at various stages of processing. Storage in landfills has been used most often in the past; but, as more and more of these wastes are being declared hazardous, landfill costs have […]
Flotation of Silicon Carbide
Silicon carbide (SiC) is a synthetic compound which is commercially produced by heating a mixture of metallurgical coke and high-purity silica sand to 2,400° C in an electrical resistance furnace. A method to produce SiC was first discovered in this country by E. G. Acheson in 1891 while studying the reaction of carbon with other […]
Processus d’Extraction de l’OR
Le plant IGR 100 est un système modulaire système autonome de Processus d’Extraction et récupération de l’or. Il utilise la classification et à la gravité accrue pour vous assurer attirent l’or fin et les grosses pépites. Dans le flux de norme de configuration comme suit: Le mineur se nourrit de sable et de gravier dans […]
Extraction de l’or Sans Mercure
Pour l’Extraction de l’or Sans Mercure, le Concentrateur iCON i150est l’iCON de renommée mondiale. Il s’agit d’un concentrateur gravimétrique qui utilise renforcée gravité (G) de concentrer les ‘libres’ de minéraux lourds. Il est également connu comme un concentrateur centrifuge en raison de l’action centrifuge de la cuvette de filage. Le procédé utilise de l’eau seulement, […]
Extraction de l’Or par Gravitation
Récupérer de l’Or avec du Mercure Sans mercure, Pas de Cyanure Balayage / retraitement Tails Hard Rock Publication de traitement des minerais de Hard Rock Concentration des minerais / Tails pour le traitement final régional Alluviales / Placer et travaux de dragage Première transformation lorsque vous savez que votre or est trop fine pour une […]
Haulage Truck Bumper Design
The extended Haulage Truck bumper was developed to provide protection to the operator in the event of a rear-end collision between trucks. This protection is necessary because the outcome of a rear-end collision between trucks often results in the rear-end of the dump body of the forward truck penetrating the cab area of the rearward […]
Turbomilling Comminution of α-SiC Silicon Carbide
Interest has been increasing in recent years in structural materials that can withstand severe conditions of temperature, pressure and environment, and can substitute for high-temperature alloys that require imported materials such as chromium, cobalt, and nickel. As a result, the utilization of ultrafine, high-purity ceramic powders in advanced and composite ceramics is increasing. Nonoxides such […]