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The efficiency of PIONERA BioPolymer versus sodium cyanide recovery PIONERA BioPolymers can offer a significant economic advantage in of iron/sulfur bearing minerals in reducing smelter penalties, increasing grade and recovery of metallic concentrates.read more
activation of is mainly responsible for the high of this mineral in alkaline pH conditions, while its is due to the higher proportion of surface oxidation products inhibiting collector adsorption, orrand a reduced stability of collector such as dixanthogen ŽShen et al., 1998..read more
While a vast array of reagents for pyrite depression have been proposed and reported, we are unaware of use of 2-S thiouronium ethane sulfonate IESA as a pyrite depressant during both coal and copper sulfide flotation operations, and moreover, we are surprised by the effectiveness thereof in such operations. SUMMARY OF THE INVENTIONread more
· "Flotation of copper-molybdenum sulphide ores in seawater entails critical challenges such as selective recovery of molybdenite, effective pyrite depression, and reducing the lime addition required to reach highly alkaline conditions.read more
metal extraction processes. is usually reached at highly alkaline conditions An improved test method and by an organic reagent during in seawater by R.I. Jeldres*, D. Calisaya*, and L.A. Cisternas* *59,484 of -molybdenum sulphide ores in seawater entails criticalread more
used for the separation of /lead minerals [2,3], such as with lead and lead with . Some reagents such as sodium cyanide for the of chalcopyrite and sodium dichromate for the of galena are employed . Although only small amount of this kindread more
Dextrins are commercially used for of carbonaceous of lead in bulk separation Bulatovic, 2007 and of hematite and apatite in their reverse flotation against siliceous minerals Lin and Burdick, 1988. Dextrin dosages of …read more
For , it is clear that A. ferrooxidans was as effective Fig. 5 shows that the ﬂotation of sphalerite and follows as sodium cyanide, and recoveries were 25.3% and 23.5% ﬁrst-order kinetics in the presence and absence of A. ferrooxidans when NaCN and bacteria were used as the depressants, respec- with 140 g/t ...read more
· The mechanism underpinning the role of lignosulfonate-based biopolymers on the flotation of un and has been investigated. In the flotation of un-activated pyrite at pH 5, dixanthogen is the main species responsible for pyrite flotation, the formation of which is accompanied by the reduction of oxygen or ferric hydroxides on pyrite surface.read more
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