Depressants are added to flotation circuits to reduce naturally floatable gangue (NFG) present in ores, but under certain conditions have been shown to affect sulphide mineral recovery ...
Arsenic and Antimony Sulphide Minerals in Cyanidation View Larger Image The successful cyanidation of gold ores containing appreciable amounts of arsenic or antimony sulphide minerals such as orpiment, realgar, and stibnite is usually difficult or even impossible.
Investigation of surface properties of gangue minerals in platinum bearing ores the activation with copper ions and subsequent flotation behaviour, in the presence of xanthate, of the two minerals.
A method for the depression of non-sulfide, silicate gangue minerals is provided wherein the depressant is a graft polymer of polyvinyl alcohol and an acrylamide.
sulfide minerals from gangue minerals. Leaching time was in a range of 20 to 240 min, while the initial H2SO4 concentration in the leaching solution varied from 0.05 M to 0.3 M. The particle size was 90% –74 μm; stirring velocity 300 rpm, while the phase ratio was S:L = 1:2. These three process para- meters were kept constant in all experiments. All expe-riments were performed at the room ...
The effect of non-sulphide gangue minerals on the flotation of sulphide minerals from Carlin-type gold ores
phide minerals, inadvertent activation of silicate gangue by metal ions, hetero-coagulation between sulphide and gangue minerals and recovery of fine particles.
2018-07-21· A Comparison Of Liberation Determinations By Particle Area . flotation plant processing a complex base metal sulfide ore showed that the liberation of the ore minerals determined by area measurements is very similar to the
Quartz, feldspars, biotite, chlorite, sericite, anhydrite, clay minerals, and other layer silicates are the dominant gangue minerals. The sulphide copper ores are …
CAPSULE DESCRIPTION: Sulphide-rich veins containing sphalerite, galena, silver and sulphosalt minerals in a carbonate and quartz gangue. These veins can be subdivided into those hosted by metasediments and another group hosted by volcanic or intrusive rocks. The latter type of mineralization is typically contemporaneous with emplacement of a nearby intrusion.
Floatable Gangue . The basic gangue minerals are the same for each reef type (orthopyroxene, plagioclase, olivine, clinopyroxene, chromite and alteration phases) but relative to the NP2 reef, the Normal and P2 reef contain a far higher abundance of primary ferromagnesian minerals and their alteration phases.
Depositional Setting of Silver-Rich Quartz-Sulphate-Carbonate Deposits of the Upper Kitsault River Area, Northwest British Columbia By Kathryn P.E. Dunne and Robert H. Pinsent
Carbonate mineral gangue can also be present. When liberated, typical copper sulphide minerals are relatively easy to float. When there are no overriding metallurgical issues, producing a sufficiently high copper concentrate grade is often the focus. Often the primary grade control issue relates to iron sulphide minerals since these also float with the copper, diluting copper concentrate ...
In this study, the latest X-ray computed micro tomography (µCT) techniques are used to perform in situ visualisation and quantification of the mineral sulphide (MS) grains and gangue fractions, as well as assessment of the mineralogy (in this sample for some phases only), porosity and fracture networks within individual ore fragments, and the ore bed, as they undergo leaching in a small-scale ...
Company Location I Main sulphide I Gangue sulphide Other gangue Reference minerals minerals Philex Mining Corporation Luzon, Phillipines Chalcopyrite Negligible Quartz 93% Johnson I"
'Here, too, the veins may be monomineralic, commonly quartz or calcite, but more usually are polymineralic with a mixture of metalliferous sulphide or oxide minerals and gangue minerals.' 'Native copper and a host of gangue minerals were deposited in fissure veins, brecciated and fractured vesicular lava flow tops, and conglomerate beds during the same period of metal mineralization.'
Small increase in clays proportion in the feed had considerable effect on recovery of sulphides. • The antagonistic effect of gangues on the sulphides grade was much stronger than that for recovery.
Most copper ores contain only a small percentage of copper metal bound up within valuable ore minerals, with the remainder of the ore being unwanted rock or gangue minerals, typically silicate minerals or oxide minerals for which there is often no value.
Froth flotation is a process for separating minerals from gangue by taking advantage of differences in their hydrophobicity. Hydrophobicity differences between valuable minerals and waste gangue are increased through the use of surfactants and wetting agents.
Mineralogy and Mineral Assemblages. In the traditional view, supergene ore and gangue minerals are the products of reactions between hypogene sulfide minerals and …
Gangue Minerals Asociated with Askot Sulfides The term gangue shall be used herein to describe silicate minerals associated with the metallic sulfides. Mineralogical and textural studies of the gangue minerals and their relationship with the sulfides are based on a study of 120 polished thin sections.
Gn-non-sulphide gangue including hematite and magnetite. The mineral fragmentation measurement provides important information regarding the primary grind required for a successful flotation separation to occur in the rougher-scavenger circuit. The requirement for regrinding can also be assessed from the same data set. Fragmentation characteristics of the minerals present in the flotation feed ...
Sulphide Gold Recovery. Pre-concentration of coarse 350 – 500 micron sulphide-associated gold ore, using the InLine Pressure Jig, is required to reject gangue from the high value material.
The effects of silica gangue and high sulphide gangue on gold attachment were examined including the effect of surface activators (potassium amyl xanthate) and the possibility of depressing the effects of gangue using reagents.
2018-10-28· US7785395B2 - Method for the recovery of gold from sulphide . The gangue minerals are mostly silicates. Coarse, undissolved gold is separated from this first intermediate product by means of gravity separation.
It is found as a gangue mineral in many kinds of hydrothermal veins, in caverns in limestone formations, or deposited from warm or cold springs. Hydrothermal alteration occurs when hot waters free calcium and carbonate ions from separate sources, and then the ions combine to precipitate calcite.
2017-07-02· 200tons Oxide/sulfide Copper Mining Flotation Machine Flotation . 200tons Oxide/sulfide Copper Mining Flotation Machine Flotation Cell, Find . concentration, the mineral is usually transferred to the froth, or float fraction, leaving the gangue .
Carboxymethyl cellulose, CMC, is widely used in mineral processing as a flotation depressant, mainly for the depression of carbonate and talcaceous gangue in the flotation of Cu-Ni sulfide and PGM ...