Grinding conditions affect the flotation of copper sulphide minerals as changes in the properties of the grinding media and their interactions with the sulphide minerals and between sulphide minerals themselves affect the chemical environment in the flotation pulp Galvanic interactions between steel grinding media and sulphide minerals and between sulphide
In all cases they follow the same trend observed with conventional collectors and frothers used in sulphide ore flotation such that the recovery decreases if the grade increases Wills 1992 The relative position of the series representing the biosolids the salt of the humic acids and the conventional collectors and frothers indicate an
It was found that CO 2 atmosphere in grinding clearly improved both PGM grade and recovery in flotation of the ore with lower sulphide content Platinum selectivity was improved also with the other ore but recovery was similar to the other tests Grinding in CO 2 atmosphere seems to diminish the oxidation which assists upgrading of platinum group minerals
The depression of pyrite in copper ore flotation is a challenge in high salinity water although natural pyrite can be depressed readily at alkaline pH due to the formation of iron hydroxides on pyrite surfaces Boulton et al 2001 Mu et al 2016 In copper ore flotation a galvanic interaction occurs between copper minerals and pyrite with copper minerals acting as
The effect of a new polysaccharide on the depression of talc and the flotation of a nickel copper sulfide ore Miner Eng 2015b;77 99 106 Google Scholar Kelebek S Tukel C Separation of nickeliferous hexagonal pyrrhotite from pentlandite in Ni Cu sulphide ores recovery by size performance Miner Eng 2018;125 223 30
Sulfide Ore Flotation Process Systems The full sulfide rock minerals processing plant includes 4 systems 1 Crushing System Chute feeder is for feeding raw material to primary jaw crusher stably and evenly can feed 0 300mm stones if bigger size and capacity can use grizzly vibration feeder Then primary jaw crusher crushes the big rock to
An ore typical of the Merensky reef was acquired from one of the Merensky processing operations The bulk sample was crushed blended riffled and split using a rotary splitter into 1 kg plant water Wiese et al 2005a Wiese et al 2005b was used for all batch flotation 1 kg ore samples were milled in synthetic water at 66%
Chalcopyrite CuFeS 2 and molybdenite MoS 2 are the main copper and molybdenum minerals found in complex sulphide usual flotation practice of separating molybdenite from chalcopyrite relies on a two stage flotation process [4] [5] First a bulk Cu Mo concentrate is produced which is later refloated to obtain separate chalcopyrite and
Xanthate reagent schemes are commonly used in base metal sulphide ore flotation processes as xanthates are known as universal base metal sulphide collectors Wills et al 2006 However xanthates are anionic thiol collectors Wills et al 2006 known to be environmentally toxic
The rougher flotation and closed circuit flotation tests of copper nickel sulfide ore kg were performed on XFD 63 type flotation machines of different capacities L L obtained from Wuhan Exploration Machinery Co Ltd [5] with mechanically stirring speed of 1610 rpm The L cell was used for rougher and scavenger stages
The usual procedure in the flotation stage of complex sulphide ore is floating Cu and Pb minerals in the first stage while Zn mineral is floated in the second stage Liu and Zhang 2000; Woodcock et al 2007 Pb mineral flotation is usually affected by a number of factors which includes components and species present in the pulp Chen et al
mainly focus on either the sulphide ore or the oxide ore for which ef fective metallurgical processes are well established However less is known about processes for copper and cobalt extraction from mixed oxide sulphide ore Crundwell et al 2011 From the perspective of beneficiation mixed oxide sulphide ores present a challenge not least
The flowsheet above was designed to treat economically approximately 200 tons in 24 hours of a low grade dump ore containing lead and zinc values as well as some silver in both sulphide and oxide form Due to varying specific gravities of the values gravity concentration in addition to flotation was indicated
major mineralogical constituents of a complex sulphide ore is flotation This process in particular enables achievement of a clean separation with respect to the non valuable sulphide pyrite A review of recent developments in sulphide flotation has 162 been given by Barbery 22 and reference should be made to
carbonaceous sulfide ore in the two stage flotation is possible Figure 6 X ray diffraction pattern of products of flotation of carbonaceous sulfide ore Based on the experimental results a flowchart is proposed for the recovery of Cu from carbonaceous sulfide ores as shown in Figure 7 The copper grade reached a maximum of mass% and
The mineralogical analysis of the raw ore from a Canadian sulphide deposit shows that metal In mainly occurs as substitutes in stannite and sphalerite and as a sulphide mineral roquesite To reduce the relevant processing costs and environmental pollution flotation method should be adopted to pre enrich In from the sulphide ore
Kinetic flotation models were applied to data from tests with reactive gases hydrogen and sulphur dioxide on a complex sulphide ore The models were evaluated by statistical techniques after non linear regression on the model parameters
The formulation and use of mixed collector suites in sulphide flotation can be traced back as far as 1957 with the work of Glembottskii and his co workers in Moscow Flotation of a copper sulphide ore from O Kiep using thiol collectors and their mixtures JSAIMM 105 199 206 Google Scholar Box GEP Hunter WG Hunter JS 1978 Statistics
The procedure exploits the particle size dependence of pentlandite and pyrrhotite flotation the different ways that pH change and each of the reagents copper sulphate xanthate and guar gum affect the flotability of each of the minerals in the ore and the influence of the grinding medium on iron sulphide flotability
Sulphydryl collectors are used for the flotation of sulphide ores Sometimes a combination of various types of sulphydryl collectors having different functional groups are used to improve the flotation performance Usually UV spectrophotometry technique is used to quantify the unabsorbed amount residual concentration of single sulphydryl collectors left after the
