Selective separation of galena and sphalerite from pyrite-rich lead-zinc ores: A case study of the Kooshk mine, Central Iran Ghasem Heydari a, Javad Vazife Mehrabani a, *, Behnam Bagheri a a Department of Mining Engineering, Sahand University of Technology, Tabriz, Iran A B S T R A C T In this research, the selective flotation of galena
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Used as an effective collector for the flotation of copper lead sulfide ores and it's commonly used in the priority separation flotation of copper, lead and zinc sulfide ores because of its weak collector capability for zinc sulfide ores. Online Service. Product Advantages. Packaging and Specification. Cases.
The flotation separation and recovery approach is quite similar to the Pb-Zn sulphide separation process. Sphalerite is depressed with zinc sulphate addition to the grind with sodium sulphide as an option for enhancing pyrite depression. Copper is floated in the first differential flotation stage at a …
Due to the similar flotation behavior of chalcopyrite and galena, their separation has been always one of the difficult problems in the processing of copper-lead-zinc sulfide ores [4][5][6][7][8].
Separation of zinc(II) from copper(II) from chloride solutions is studied using alkyl-8-hydroxyquinoline (KELEX 100). The separation can be achieved in the stage of extraction, scrubbing with water, or stripping with sulfuric acid. Appropriate conditions for such separation are given and discussed, with selective stripping being the most promising. In such a process, the extraction of both Zn ...
Metal dithiophosphates obtainable by reacting a basic zinc or copper compound or a molybdenum compound with a dithiophosphoric acid, said dithiophosphoric acid being obtainable by reacting phosphorus pentasulphide with a mixture of alcohols ROH and R 1 (OH) m where m is 1 or 2, the group R is an aliphatic hydrogen- and carbon-containing group having at least 4 carbon atoms, e.g. a C 4 to …
Jan 07, 2019 Historically, as for most reagents used in flotation, the wide-spread use of dialkyl dithiophosphinates as collectors in practical applications has preceded a detailed scientific understanding of how they work. Dialkyl dithiophosphinates are a technologically and commercially important class of collectors used in the flotation processing of Cu-Au, complex polymetallic, and precious metal ores ...
Sulphide ores are the major sources of base metals like Copper, Lead, Zinc, Nickel and Cobalt. Beneficiation of. these base metal sulphide minerals is predominantl y through the froth flotation ...
In flotation of gold-containing base metal ores, a number of modifiers normally used for selective flotation of copper lead, lead zinc, and copper lead zinc have a negative effect on the floatability of gold. Such modifiers include ZnSO 4 7H 2 O, SO 2, Na 2 S 2 O 5, and cyanide when added in excessive amounts. The adsorption of collector on ...
Jun 08, 2016 Strong promoter for gold and silver, copper and zinc sulphide ores. Very little tendency to float pyrite in alkaline pulps. Aerofloat 241 Neutralized aerofloat 25. Greenish black liquid. 5-10% solution .05 to .15 Fast acting aerofloat promoter-frother for silver bearing lead ores, also copper and zinc sulphide. Aerofloat 242
A Canadian copper ore (1.45 percent Cu) was ground to minus 100 mesh in the presence of 1.6 lb./ton hydrated lime, 0.05 lb./ton sodium cyanide, and 0.1 lb./ton zinc sulfate. The ore pulp was conditioned for 2 minutes with 0.06 lb./ton methylisobutyl carbinol as frother and 0.02 lb./ton mixed sodium-potassium diisoamyl dithiophosphate as promoter.
Oct 02, 2016 As an example of the beneficial effect of copper sulfate in the activation of zinc sphalerite toward flotation, the series of results shown in Fig. 1 is of interest.These represent rougher tests on a sample of heavy pyritic ore. The particular sample in question contained about 5.6% zinc as marmatite; and was treated in a circuit made alkaline with lime, using pine oil as a frother and ...
1. Method of flotation of copper-zinc-pyrite ore, including grinding in an alkaline medium, air conditioning with reagents - collectors and frothers, collective copper-zinc flotation to produce collective concentrate containing copper minerals and natural-activated sphalerite, and tails, characterized in that as the collector used is supplied in the following sequence composition selective ...
Apr 24, 2019 It is an effective collector for copper, lead and silver sulfide ore and activated zinc sulfide ore. It is commonly used in the priority flotation separation of lead ore and zinc ore. In the alkaline medium, the dithiophosphate 25 has weak collecting effect to pyrite and other sulfide minerals, and has certain selectivity.
In the flotation of copper sulfides; diisobutyl dithiophosphates, diisoamyl dithiophosphates and di(2-methyl-1butyl) dithiophosphates give a superior flotation rate, recovery and selectivity as compared with conventional dialkyl dithiophosphates, often permitting a coarser grind, and flotation of middlings, followed by a regrind ultimately resulting in a higher recovery of copper.
In Tribology and Interface Engineering Series, 2003. The ZDDP interactions in hydrocarbon formulation. Zinc dithiophosphates, especially ZDDP (zinc dialkyldithiophosphate), are the most widely used (for over a half a century) multifunctional antioxidant/antiwear additives in engine oil formulations (Dowson, 1998; Mortier and Orszulik, 1997).The structure of ZDDP is similar in outline to that ...
A sequential flotation process for the separation of components of a sulfide ore selected from the group consisting of copper and lead sulfide containing ores and copper, zinc and lead sulfide containing ores in which the copper component is initially selectively floated directly from said ore by conditioning the ore with a combination of a source of bisulfite ion and causticized starch to ...
In some cases, maximizing bulk copper recovery may require use of thiocarbamate and thionocarbamate collectors in conjunction with dithiophosphate and xanthate chemistries in bulk flotation. The zinc reporting to the bulk flotation tails feeds the zinc circuit which is operated as previously described in the lead-zinc flotation section. Which flotation scheme used in the differential copper-lead bulk concentrate separation …
A sequential flotation process for the separation of components of a sulfide ore selected from the group consisting of copper and lead sulfide containing ores and copper, zinc and lead sulfide containing ores in which the copper component is initially selectively floated directly from said ore by conditioning the ore with a combination of a source of bisulfite ion and causticized starch to produce a conditioned ore …
The Collectors are used in flotation of molybdenum-bearing copper ores , where molybdenum recovery has been increased by more than 10% without adverse effects on copper recovery.They are Collectors for difficuty to float ores such as copper,lead, zinc,nickel sulfides.
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