The effect of six lignosulfonates on the Hallimond tube flotation of chalcopyrite and molybdenite was studied as a function of pH, with the use of common pH modifiers (soda ash, potassium ...
Impact of oxidation on flotation of Ni–Cu sulphide ... Maney Online. Impact of oxidation on the flotation of a complex Ni–Cu sulphide has been investigated using two ... example, in the sulphides of nickel–copper ores, the massive...
The selective separation of the minerals makes processing complex (that is, mixed) ores economically feasible. The flotation process is used for the separation of a large range of sulfides, carbonates and oxides prior to further refinement. Phosphates and coal are also upgraded (purified) by .
In practical operation the function of promoters may be considered twofold: namely, to collect and select. Certain of the xanthates, for instance, possess both collective and selective powers to a high degree, and it is reagents such as these that have made possible some of the more difficult separations. In bulk flotation all of the sulphide minerals are collected and floated off together ...
Oleic acid or various mixtures of oleic and linoleic acids with soda ash and sodium silicate as silica depressant and slime controller, and quebracho to depress calcite, are the common reagents for fluorspar flotation. Sometimes presulphide flotation with xanthate and a frother is necessary to remove sulphides and, often, heating the pulp to boiling temperature is advantageous in effectively depressing .
Dec 21, 2016· This thickening step on fluorspar ores containing sulphides is usually between the sulphide and fluorspar flotation circuits. Reagents used for .
LeadZinc ores. Normal sphalerite flotation practice is to raise flotation pH to 1012 for enhancing the rejection of iron sulphide minerals to the sphalerite flotation tails. Many operators prefer to use an alcohol type frother in sphalerite flotation to maximize sphalerite flotation selectivity.
The process of concentrating fluorspar by froth flotation of pulps containing fluorspar values, comprising adding to such a pulp a soluble inorganic fluoride, a lignin sulphonate, and a fluorspar collecting agent selected from the class consisting of fatty acids and soaps, and subjecting said pulp to froth flotation to recover the fluorspar.
It has now been discovered that fluorspar ores containing in addition to fluorspar values appreciable quantities of sulfide minerals may be concentrated to produce a fluorspar enriched concentrate having a fluorspar concentration of at least 97% by a single step selective froth flotation treatment of aqueous pulps thereof provided the pulp is conditioned prior to its collection under particular alkaline conditions .
In this paper, the selective and bulk flotation methods are considered as primary sulphidic refractory gold ore pretreating options. The results show that it is impractical to remove arsenic (As) and antimony (Sb) from downstream processes by using selective flotation.
Preflotation leaching of Polish carbonate copper ore 87 Fig. 1. A selective chemical decomposition of carbonatesulfide intergrowths during nonoxidative leaching with sulphuric acid (Luszczkiewicz and Chmielewski, 2006) Leaching of the flotation feed with H 2SO 4 reduces the size of particles due to lib
Fluorite Ore Beneficiation Plant ec21. Process methods of fluorite ore are gravity separation and flotation Gravity separation equipment mainly adopts jig, only jig can deal with the coarse fluorite ore Fluorite flotation equipment is similar with other mineral flotation equipment including crusher, ball mill, flotation machine etc .
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