In flotation, pH control is a vital method to control selective mineral separation. A standard depressant that is used is an Alkali. An Alkali is any substance that when mixed with Acid will neutralize each other and form a new chemical substance called a BASE. This is very important. The ore may be either alkaline or Acidic. To have a positive control over flotation, it is necessary to be
Figure 12.23 Effect of the type of modifier on the rate of gold flotation at pH 9.2. Else_HFRC-Bulatovic_Ch012.qxd 280 1/3/2007 1:10 PM Page 280 12. Flotation of Copper Sulfide Ores ash and NaOH are suitable for low-pyrite copper–gold ores, but not for copper–gold ores with high pyrite content. Ore with high pyrite content requires higher
Control of Eh using NaCIO as a function of pH in a flotation cell for a Merensky ore pulp. When the pH was adjusted to pH 11 by the addition of NaOH the natural Eh was found to have decreased to a
Jul 09, 2019· 1 Types of copper sulfide ore (1) Single copper mineral Its ore characteristic is relatively simple, and the only useful component that can be recycled is copper. The gangue minerals are mainly quartz, carbonate and silicate. (2) Copper-sulfur ore Called copper-bearing pyrite. In addition to copper minerals, iron sulfide can be recovered, and the main mineral of sulfur is pyrite.
Copper is most commonly present in the earth’s crust as copper-iron-sulphide and copper sulphide minerals, for example, chalcopyrite (CuFeS2), bornite (Cu5FeS4) and chalcocite (Cu2S).
Best Particle Sie For Copper Sulphide Flotation. Pyrite Flotation Froth Flotation Sulphide amp Oxide. Can you list the factors affects the floatability of pyrite from refractory low grade ore.I used a Wemco lab flotation cell and aimed on analysing factors like collector dosages PAX Activator Copper sulphateMIBC pH and others like pulp density and particle sie 70 and 150 microns .However.
A detailed study was conducted to evaluate the effect of particle size, pH, flotation time, collector type and addition on efficiency of tennantite flotation. It was shown that maximum copper recovery of 95,3% was obtained at pH 12.3 by lime.It was suggested to grind up to 65.72% of -0.074 mm to achieve the optimum recovery of copper and high
Abstract—This study investigated the effect of pH on the recovery and grade of the Platinum Group Metals (PGMs) and base metal sulphides from the UG2 ore of the bushveld complex. This was achieved through running a series of test work in a Denver flotation cell at varying pH 6-11 at constant reagent dosage. The UG-2 reef is characterized by two
flotation selectivity and recovery in the processing of complex sulphide ores. It is an inherent part of surface chemical reactions that determine chemistry of the nickel-copper ores appears to challenge the effectiveness and consistency of these reagents; in many cases, the frother and lime as the pH modifier (for a value 9 to 9.5).
P. Sornasundaran B.Sc., B.E., M.S., Ph.D. Henry Krumb School of Mines, Columbia University, New York, U.S.A Synopsis Although the flotation of sulphide ores has been practised and studied for almost 75 years, the mechanisms that govem the interfacial processes that are involved in flotation and flocculation are poorly understood, mainly
Figure 12.23 Effect of the type of modifier on the rate of gold flotation at pH 9.2. Else_HFRC-Bulatovic_Ch012.qxd 280 1/3/2007 1:10 PM Page 280 12. Flotation of Copper Sulfide Ores ash and NaOH are suitable for low-pyrite copper–gold ores, but not for copper–gold ores with high pyrite content. Ore with high pyrite content requires higher
This invention relates to the pH modifier in alkaline froth flotation processes to treat oxide and semi-soluble salt ores, such as phosphates, sulfates, carbonates and halides, to increase the recovery while generally maintaining or improving selectivity, thus the grade of desired minerals. The invented pH modifier is used to replace traditional alkaline pH modifiers—hydroxides, carbonates
Control of Eh using NaCIO as a function of pH in a flotation cell for a Merensky ore pulp. When the pH was adjusted to pH 11 by the addition of NaOH the natural Eh was found to have decreased to a
Abstract—This study investigated the effect of pH on the recovery and grade of the Platinum Group Metals (PGMs) and base metal sulphides from the UG2 ore of the bushveld complex. This was achieved through running a series of test work in a Denver flotation cell at varying pH 6-11 at constant reagent dosage. The UG-2 reef is characterized by two
A detailed study was conducted to evaluate the effect of particle size, pH, flotation time, collector type and addition on efficiency of tennantite flotation. It was shown that maximum copper recovery of 95,3% was obtained at pH 12.3 by lime.It was suggested to grind up to 65.72% of -0.074 mm to achieve the optimum recovery of copper and high
453 Acid leaching of oxide–sulfide copper ore prior the flotation A way for an increased metal recovery Miroslav D. Sokić1, Vladan D. Milošević1, Velizar D. Stanković2, Vladislav Lj.Matković1, Branislav R. Marković1 1Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade, Serbia 2University of Belgrade, Technical Faculty, Bor, Serbia
P. Sornasundaran B.Sc., B.E., M.S., Ph.D. Henry Krumb School of Mines, Columbia University, New York, U.S.A Synopsis Although the flotation of sulphide ores has been practised and studied for almost 75 years, the mechanisms that govem the interfacial processes that are involved in flotation and flocculation are poorly understood, mainly
Hydrate Lime: Depressant for pyrite during copper and zinc flotation and in other sulphide ores where pyrite is a problem. Citric Acid: Organic Acid gangue depressant for ores containing oxide minerals Sodium sulfide & Hydrosulfide (NaHS): Used for the depression of Cu and Fe sulfide
Lime Use And Functionality In Sulphide Mineral Flotation. Lime in flotation as a ph modifier can also regulate not only collector adsorption but also the effect of other commonlyused depressants such as sodium sulphide or sodium cyanide yoon 1981 ghiani et al 1984 wang and forssberg 1996 cyanide acts by dissolving copper from the surface of the
Thus the sulphide ore comes on the top with the froth and oil. The remaining gangue particles which did not dissolve in oil settle down. The foam is removed and taken for further processing. Thus the minerals are separated by the froth -flotation process. This method is extensively utilized for Copper sulphide, lead sulphide and Zinc sulphide.
minerals Article The Effect of Seaweed Glue in the Separation of Copper–Molybdenum Sulphide Ore by Flotation Zhixiang Chen 1, Guohua Gu 1,*, Shuangke Li 1,*, Chongqing Wang 2 and Renfeng Zhu 1,3 1 School of Minerals Processing and Bio-Engineering, Central South University, Changsha 410083, China; [email protected] (Z.C.); [email protected] (R.Z.)
Depression of pyrite in porphyry copper flotation. Rougher Con, pH = 10.5, Eh= 250 mV SHE Pyrite reports to the Cu concentrate even at high pH 0 20 40 60 80 100 2 4 6 8 10 12 pH Flotation recovery (%) PPyy Cp Case Study Pyrite should not float at high pH (Gaudin, 1957): Maximum pyrite recovery in the intermediate size ranges true flotation Xanthateadsorp. density [ ] [ ]− − ∝ OH X log
Abstract—This study investigated the effect of pH on the recovery and grade of the Platinum Group Metals (PGMs) and base metal sulphides from the UG2 ore of the bushveld complex. This was achieved through running a series of test work in a Denver flotation cell at varying pH 6-11 at constant reagent dosage. The UG-2 reef is characterized by two
This invention relates to the pH modifier in alkaline froth flotation processes to treat oxide and semi-soluble salt ores, such as phosphates, sulfates, carbonates and halides, to increase the recovery while generally maintaining or improving selectivity, thus the grade of desired minerals. The invented pH modifier is used to replace traditional alkaline pH modifiers—hydroxides, carbonates
Calcium and sulphate ions are two very common components in the process water from flotation of sulphide minerals. The origins of calcium and sulphate species in process water are the ore and flotation reagents, such as lime for maintaining pH and NaHSO. 3. for controlling the surface properties (Broman, 1980). Previous studies dealt
Molybdenite-bearing copper sulphide ores are typically beneficiated by froth flotation lime is employed as a pH modifier as well as for the depression of 1. Flotation of copper at different pH is associated with the type of frother used. With
minerals Article The Effect of Seaweed Glue in the Separation of Copper–Molybdenum Sulphide Ore by Flotation Zhixiang Chen 1, Guohua Gu 1,*, Shuangke Li 1,*, Chongqing Wang 2 and Renfeng Zhu 1,3 1 School of Minerals Processing and Bio-Engineering, Central South University, Changsha 410083, China; [email protected] (Z.C.); [email protected] (R.Z.)
Hydrate Lime: Depressant for pyrite during copper and zinc flotation and in other sulphide ores where pyrite is a problem. Citric Acid: Organic Acid gangue depressant for ores containing oxide minerals Sodium sulfide & Hydrosulfide (NaHS): Used for the depression of Cu and Fe sulfide
453 Acid leaching of oxide–sulfide copper ore prior the flotation A way for an increased metal recovery Miroslav D. Sokić1, Vladan D. Milošević1, Velizar D. Stanković2, Vladislav Lj.Matković1, Branislav R. Marković1 1Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade, Serbia 2University of Belgrade, Technical Faculty, Bor, Serbia
P. Sornasundaran B.Sc., B.E., M.S., Ph.D. Henry Krumb School of Mines, Columbia University, New York, U.S.A Synopsis Although the flotation of sulphide ores has been practised and studied for almost 75 years, the mechanisms that govem the interfacial processes that are involved in flotation and flocculation are poorly understood, mainly
Research using a continuous flotation test unit has resulted in a flowsheet that allows the recovery of 70 pct or more of the cobalt in Missouri lead ore copper concentrates, at grades of greater than 3 pct Co or 7 pct combined NiCo. This can be accomplished on feeds grading as low as pct Co.
The aim of this study was the recovery of copper from the oxide copper ore by froth flotation and agitating sulphuric acid (H 2 SO 4) leaching. The ore with 4.21% copper grade used in this study was obtained from Çorum-Dangaz region of Turkey. Native copper, cuprite (Cu 2 O), tenorite (CuO), and malachite (Cu 2 (OH) 2 /CO 3) were the
May 30, 2016· Different sulphide ores respond differently in the prospect of copper activation to thiols for froth flotation. With the BCL Selebi-Phikwe ore body, pentlandite–pyrrhotite–chalcopyrite co-occur and there is the constraint of fine pentlandite dissemination in the pyrrhotite, so that liberation is limited. In the presence of pentlandite, pyrrhotite can even be galvanically depressed.
flotation process. This study was carried out on the Sarcheshmeh porphyry copper sulphide ore. The Sarcheshmeh copper ore is a major porphyry copper deposit, which is located in Kerman Province in the southeastern part of Iran. 2. Experimental section 2.1. Materials The obtained samples from the ball mills input of the Sarcheshmeh copper mine were
modifiers for copper gold ores 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 . a positive effect on gold bearing sulphide flotation, at a pH between 7.5 and 9.0.
The present work aims to study the influence of the temperature on the flotation of zinc sulphide ores with the addition of different pH regulators after documentation of temporary decreases of sphalerite recovery in the final concentrate since 2008. These occurrences
) on the flotation of a copper sulphide ore from Kansanshi Copper mine in Zambia. The potential modifiers were investigated at 1x10-4, 1x10-3 and 1x10-2 mols which gave rise to various Eh values for each modifier. Batch flotation and froth stability tests were carried out at the ores natural pH
Among the flotation reagents, commonly used activators for flotation are sulfuric acid, sulfurous acid, sodium sulfide, copper sulfate and so on. Inhibitors : It is a kind of reagents mainly used to increase the hydrophilicity of minerals and to form a hydrophilic film on the surface of the ore particles in flotation
Base metals such as copper, lead, and zinc are mainly extracted from sulfide ores. Mostly these base metals tend to exist together in an ore. Flotation process is widely used to separate these minerals in sulfide ores . A wide range of chemical reagents are used in the flotation process to separate the different minerals.
comparison of oxide and sulphide copper ore deposits. flotation in mining copper and gold oxide ore. Jun 20, 2018 Copper processing is a complicated process that begins with mining of the ore The most common types of ore, copper oxide and copper sulfide, undergo two purify copper from copper sulfide ores, in four basic steps 1) froth flotation, are collected and may be refined to recover other
Flotation using flocculants for copper sulphide ore. flotation of copper slag in kampala movieorgin There are four grinding and flotation lines sequentially yielding a copper and designed by Outokumpu with input from Kennecott plus a slag treatment plant. More Info flotation of copper oxide ores shaheenpublicschool
Copper Sulphide Ore Reagents For Copper Walter . Copper Sulphide Ore Reagents For Copper Flotation After two minutes flotation a copper grade of 5.2 per cent with 52 per cent recovery could be attained, against a grade of 2.5 per cent and a recovery of 44 per cent in the case of kax.the efficiency of this new collector has been ascertained on two samples of complex sulphide ores of.
Jan 01, 2017· Base metals such as copper, lead, and zinc are mainly extracted from sulfide ores. Mostly these base metals tend to exist together in an ore. Flotation process is widely used to separate these minerals in sulfide ores [1]. A wide range of chemical reagents are used in the flotation process to separate the different minerals.
containing copper ores, base metal ores, copper nickel ores, platinum group ores and many other ores where other processes are not applicable. Flotation is also used for the removal of interfering impurities before hydrometallurgical treatment (i.e. carbon prefloat), for upgrading of low-sulphide and refractory ores for further treatment.
Flotation Process of a Complex Sulphide Ore Caroline Olsen1, Sami Makni2, Brian the Zn grade reduced from 32.2% to 17.5% in the copper rougher concentrate after After grinding, the slurry was transferred in a 2.5L Denver flotation cell, conditioned with the pH modifier, reagent, Cu2+ (if planned), collector and frother. For each reagent
The copper ore of a copper mine in Zimbabwe is mainly copper-bearing pyrrhotite and high-copper skarn ore. The copper grade of the original ore is 1.25%, and its iron grade is 30.73%. The copper minerals in the ore are mainly chalcopyrite, followed by porphyry, and a small amount of chalcocite, covellite, malachite, etc.
Jan 30, 2015· Oil and froth float on the surface along with the sulphide ore. The gangue particles being insoluble in oil remain at the bottom of the water tank. The froth is removed and allowed to settle down. This is called the froth-floating process. This process is used for sulphide ores of Cu, Pb and Zn 10 11.
The present study explored the use of potential modifiers such as sodium hypochlorite (NaClO), potassium permanganate (KMnO₄) and potassium dichromate (K₂Cr₂O₇) on the flotation of a copper sulphide ore from Kansanshi Copper mine in Zambia.
collector (NMBT) in recovering copper from the flotation of Black mountain ore at two different pHs was investigated in this study. Most of the minerals found in black mountain ore (Galena, Spalerite and Chalcopyrite) are said to be sulphide minerals as shown by their chemical formulae: PbS, (Zn,Fe)S and CuFeS 2 . This study focused on the
May 01 2018 the ideal ph for scheelite flotation however ranges from 8 to 11 with some authors restricting it between 9 and 10 a ph of 9 is usually given as the optimum regardless of the reagent combination different ph modifiers can be used in scheelite flotation such as sodium hydroxide sodium carbonate or calcium oxide. Online Chat