Goldinrefractory sulfide oresoccurs asfineinclusions or in solid solution typically within pyrite, marcasite, and arsenopyritegrains. In this type of ore, because thegoldis encapsulated, the interaction with cyanide to form the soluble metal complex is inhibited (Marsden and House, 2006; La …
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Refractory goldconsists of extremelyfine grained gold particlesthat are either physically encapsulated within, or chemically bound within, a host mineral. In addition, thehost mineralproves impervious to cyanide leaching, which preventsgold extraction.
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If the encapsulated gold is coarser in size, ranging say, from 1 or 2 microns to approximately 20 microns, then liberation can also be achieved byultra fine milling(UFM). The WesternAustralian goldfields, like many others, contain numerous orebodies which arerefractoryin their primary zones.
Read More![[PDF] Ultra Fine Grinding A Practical Alternative to](/static/images/crusher/grind-mill/grind-mill-115.jpg)
This paper details the operation of theultra fine grindingprocess at KCGM as a non oxidative treatment for the extraction ofgoldfrom arefractoryores. Since early 2001, Kalgoorlie ConsolidatedGoldMines (KCGM) has successfully operated anultra fine grinding(UFG) circuit to supplement itsroastercapacity for the treatment of therefractory goldflotation concentrate.
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Ultra Fine Grinding Refractory Gold Ultra fine milling for the recovery of refractory gold ScienceDirect. Refractory gold ores may be defined as those which yield low recoveries of gold when treated by the conventional grinding and cyanidation process.
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Ultra fine millingfor the recovery ofrefractory gold- ScienceDirect 13 Feb 2003 ,Refractory goldores may be defined as those which yield low recoveries ofgoldwhen treated by the conventionalgrindingand cyanidation process Thisrefracto,.
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If the encapsulated gold is coarser in size, ranging say, from 1 or 2 microns to approximately 20 microns, then liberation can also be achieved by ultra fine milling (UFM). The Western Australian goldfields, like many others, contain numerous orebodies which are refractory in their primary zones.
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There are several reasons as to why an ore may be refractory. The two most common are: 1) The gold is locked in refractory sulphide minerals such as pyrite, arsenopyrite or pyrrhotite and occurs in both the chemically bonded state and as micro or nano-size grains of …
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Ultra Fine Grinding Refractory Gold Ultra fine milling for the recovery of refractory gold ScienceDirect. Refractory gold ores may be defined as those which yield low recoveries of gold when treated by the conventional grinding and cyanidation process.
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Ultra fine milling for the recovery of refractory gold - ScienceDirect 13 Feb 2003 , Refractory gold ores may be defined as those which yield low recoveries of gold when treated by the conventional grinding and cyanidation process This refracto,.
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Theultra-fine goldparticles associated with sulfide minerals are often too small to recover by gravity and very expensive to liberate bygrinding. Typically, sulfide-associatedgoldis recovered by froth flotation. A typical sulfide-associatedgoldflowsheet is presented below in Figure 2: Figure 2: Typical sulfide-associatedgoldprocess
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Mar 10, 2011· The application ofultra fine grindingtorefractory goldores or concentrates has proven to offer a viable alternative to conventional oxidative processes. Manygoldplants have effectively used the stirred mills including IsaMill ® and SMD ® mills forultra fine grinding, , , .
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ultra finemilling for the recoveryrefractory gold. Home; product;ultra finemilling for the recoveryrefractory gold; product list. K Series Mobile Crushing Plant; Mobile Vibrating Screen; Belt Conveyer; Sand Washing Machine; S5X Series Vibrating Screen; ... rod mill limestonegrinding10 mm to 10 mm size 20;
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Ultra Fine Grinding - A Practical Alternative to - Semantic Scholar. The refractory nature of gold ores is often associated with gold finely mill shell. Ultra fine grinding mills have been in use for many years in a large number of. Get Price; Ultrafine Grinding - an overview | ScienceDirect Topics
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The use ofultra-fine grindingof the JXSCgoldore ball mill can strengthen the alkali leaching, which may provide a technically feasible and economically reasonable treatment process for some sulfur-containing and arsenic-containingrefractory goldores.
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Ultra Fine Grinding The concentrate is dried by filtering before it is then either treated in the 10 tonne per hour (tph) Ultra Fine Grinding (UFG) Mill at Fimiston or is trucked to the Gidji Processing Plant, 20 kilometres north of Kalgoorlie-Boulder.
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MoreJan 01, 1981· The kinetics of dry grinding of several cement clinkers and two coals were investigated in a laboratory tumbling ball mill. The kinetic process is first-order at first, but the rates of breakage decrease as fines accumulate in the bed. It was demonstrated that theslowing of the breakage ratesapplies to all sizes in the mill, indicating that the cushioning action of fines affects the whole breakage …
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