Jan 01, 2005· Circulating fluidized-bed (CFB) technology has been successfully applied to the roasting of refractory gold ores and concentrates on both pilot plants (200, 350 and 700mm furnace inner diameters) and commercial CFB roasting plants.
Jan 01, 2016· History of Gold Ore Circulating Fluidized-Bed Roasting Technology. In the course of the development of fluidized-bed (FB) roasting technology, Outotec commercially introduced the advantageous circulating fluidized-bed (CFB) technology to the industry. which consists of the fluid-bed furnace, recycling cyclone, and seal pot (termed also as
Publisher Summary Circulating fluidized-bed (CFB) technology has been successfully applied to the roasting of refractory gold ores and concentrates on both pilot plants (200, 350 and 700mm furnace inner diameters) and commercial CFB roasting plants. The CFB provides conditions for enhanced heat and mass transfer, supporting nearly ideal isothermal conditions and fast reaction kinetics.
Roasting of Gold Ore in the Circulating Fluidized-Bed Technology. proportional heat sinks were adopted in the furnace to compensate the missing heat transfer surfaces from 3-D cylinder riser
Circulating fluidized-bed (CFB) technology has been successfully applied to the roasting of refractory gold ores and concentrates on both pilot plants (200, 350 and 700mm furnace inner diameters
circulating fluidized furnace gold ore. Gold ore roasting and smeltingMine crushing equipment Gold ore roasting and smelting. Copper Ore Smelting Furnace Copper Ore Smelting . Alibaba offers 184 copper ore smelting furnace products About 75 of these are industrial furnace 17 are Gold ore
The roasting of PGM-ore concentrates in a circulating fluidized bed J. HAMMERSCHMIDT Outotec Metals Lurgi Metallurgie GmbH became part of Outotec in 2002. The company is now known as Outotec GmbH. It has been developing and applying different systems of fluidized-bed reactor to a variety of industrial processes for almost fifty years.
pressure of the roaster gas. Our circulating fluidized bed technology enables the necessary fine control over these parameters. To avoid losses in the leaching plant, it is recommended that whole ores are treated with a gold-roasting step. Due to the low specific heat value of whole ore, it is generally necessary to add fuel to the reactor.
Harper kilns are designed to send a powerful stream of fluid (gas or liquid) up through your particulate material, suspending and circulating the gas and solid particles. This fluidization produces an even distribution of air among the particles, making the fluid bed
Fluidized bed furnaces employ an alloy retort filled with sand-like alumina particles. When a controlled stream of air or gas is passed upward through a distributor below the retort, the particles float on a cushion of the air / gas stream and move around turbulently without elutriation. The now “fluidized” bed looks and behaves
Roasting of Gold Ore in the Circulating Fluidized-Bed Technology. proportional heat sinks were adopted in the furnace to compensate the missing heat transfer surfaces from 3-D cylinder riser
Gold concentrate roasting, most commonly known as dead roasting, uses Outotec's circulating fluidized bed technology. When using a dead roasting process for concentrates, the sulfides are completely transformed into oxides. The gas temperature in
Microscopic gold inclusions in sulfide minerals cannot typically be extracted by conventional cyanidation. The gold ore must be pretreated to oxidize sulfide minerals associated with gold and to remove other minerals and chemical compounds that interfere in the cyanidation leaching process. The recovery of gold from refractory sulfidic-carbonaceous ores after roasting pretreatment was studied.
Hard Rock Mining; most of the gold circulating the world today are results of the Hard rock mining process. For this mining process to be practical, open pits and underground mining tunnels are dogged, paving easy access for miners to access the gold ores directly from the rock. 1.1, Smelting the Gold Ores
circulating fluidized furnace crusher ortitriesteCirculating fluidized bed CFB boiler ing principle . This requires only a crusher not a pulverizer Fro
The operation of prereduction fluidized bed combinedwith an in-bath smelting reduction furnace was performed in NKKFukuyamaWorks, Iron ore fines, such as sinter feed are directly charged into the fluidized bed. This fluidized bed wasso designed as to form a dense bed and equip the circulating
