depressants in mineral processing
Applications of PIONERA BioPolymers in mining and mineral
A higher recovery rate or better metal grades are achieved without capital expenditure. The main areas of successful application of PIONERA BioPolymers in mineral processing are Flotation. Selective depressants for various gangue materials as Pyrite Clay Pyrrhotite Barite Calcite and others. Leach circuit
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The NASMIN range of depressants is widely used in the control of siliceous gangue minerals. Activators and surfactants in this range are used in promoting flotation and in electrowinning and electrorefining operations. The broad product range allows Nasaco to address specific mineral processing problems by providing the best chemical
Get PricePolysaccharide Depressants for the Reverse Flotation of
Dec 12 2015 · Review of reverse flotation of iron ore is presented with a focus on the polysaccharide depressants used and the corresponding adsorption phenomena. Iron oxide minerals have a special affinity for starch and other polysaccharides and this special property facilitates their depression during the reverse cationic flotation of silica with ether amines in
Get PriceAsh Depression in Fine Coal Flotation Using a Novel
Synthetic and naturally occurring polymers have been successfully used in mineral processing/coal preparation mainly as gangue depressants or dispersants to increase the combustible recovery of coal fines 4 - 10 . Reza et al. proposed selective flotation using sodium polyacrylic acid and polyacrylamides. In this method polymers were added to
Get PriceLime use and functionality in sulphide mineral flotation
Nov 01 2019 · Lime is a relatively inexpensive reagent making it the most frequently used alkali in mineral processing. Based on indicative (2019) bulk reagent prices (excluding logistics costs) the effective mol OH − yield per US dollar of reagent is approximately 200 for CaO compared to 150 70 and 50 for MgO N 2 CO 3 and NaOH respectively. The total
Get PriceA Novel Mineral Flotation Process Using Thiobacillus
Leaching metals from low-grade ores is a well-established application of bacteria to mineral processing ().For instance Thiobacillus ferrooxidans is able to oxidize pyrite to ferric ions and sulfate thereby contributing to the extraction of many kinds of valuable metals from a low-grade mineral. In contrast to this biological processing physical-chemical methods have heretofore
Get PriceEffect of depressants in the selective flotation of
The mineral suspension was prepared by adding 2.0 g of mineral to 35 mL of water. The pulp was continuously stirred for 1 min with a pH regulator 2 min with the depressant and the collector. The pH of the solution was measured before the flotation and the
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Depressants make it possible to increase final recovery consistently without sacing concentrate grade. They can either depress the effect of hydrophobic gangue minerals in the ore that would otherwise report with the froth along with the desired mineral or hold down the desired mineral while floating the undesirable gangue.
Get PriceInvestigations on different starches as depressants for
Starch is a polysaccharide extracted from natural plant which is widely-used in mineral processing as a depressant for silicate-type gangue including talc
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Apr 17 2014 · MINERAL PROCESSING-II Prepared By Ali Bux Wassan (12MN65) and there by prevents its flotation. Depressants can also remove the collector coating from mineral surface causing depression of the mineral.mineral surface causing depression of the mineral. Potassium per magnet (KMNO4) has depressing effect on most of the sulphide minerals
Get PriceROLE OF STARCH AND METABISUPHITE ON PURE PYRITE
Depression of pyrite is very important in sulphide ore flotation. This paper investigates the role of non-toxic depressants on the flotation of pyrite. hand picking and purified using some mineral processing methods such as jigging. Chemical analyses of pure pyrite and ore samples are given in Table 1. Analyses proved that the pyrite sample
Get PriceAsh Depression in Fine Coal Flotation Using a Novel
Synthetic and naturally occurring polymers have been successfully used in mineral processing/coal preparation mainly as gangue depressants or dispersants to increase the combustible recovery of coal fines 4 10 . Reza et al. proposed selective flotation using sodium polyacrylic acid and polyacrylamides.
Get PricePolysaccharide Depressants for the Reverse Flotation of
Dec 12 2015 · Review of reverse flotation of iron ore is presented with a focus on the polysaccharide depressants used and the corresponding adsorption phenomena. Iron oxide minerals have a special affinity for starch and other polysaccharides and this special property facilitates their depression during the reverse cationic flotation of silica with ether amines in
Get PriceDepression of pyrite mineral with cyanide and ferrous
This paper presents the results of the examination of depressing effect of cyanide salts type reagents (NaCN K3 Fe(CN)6 and K4 Fe(CN)6 ) as well as ferrous/ferric salts (FeSO4 and Fe2(SO4)3) on the floatability of pyrite in the presence of xanthate as collector. The examinations show that all tested depressants reduce the collection ability of pyrite with K-butyl xanthate
Get PriceRole of Collectors and Depressants in Mineral Flotation A
minerals Article Role of Collectors and Depressants in Mineral Flotation A Theoretical Analysis Based on Extended DLVO Theory Yaowen Xing 1 2 3 Xiahui Gui 3 Fırat Karakas 2 4 and Yijun Cao 3 1 School of Chemical Engineering and Technology China University of Mining and Technology Xuzhou 221116 China
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process techniques on the mineral processing plant such as Solvent Extraction. FloMin FloMinTM range of flotation reagents C series FloMinTM C series products are collectors specifical y designed to provide maximum recovery of valuable minerals whilst retaining the high selectivity required by the modern minera s Endustry. The range of col ector
Get PriceAsh Depression in Fine Coal Flotation Using a Novel
Synthetic and naturally occurring polymers have been successfully used in mineral processing/coal preparation mainly as gangue depressants or dispersants to increase the combustible recovery of coal fines 4 - 10 . Reza et al. proposed selective flotation using sodium polyacrylic acid and polyacrylamides. In this method polymers were added to
Get PriceAsh Depression in Fine Coal Flotation Using a Novel
Synthetic and naturally occurring polymers have been successfully used in mineral processing/coal preparation mainly as gangue depressants or dispersants to increase the combustible recovery of coal fines 4 10 . Reza et al. proposed selective flotation using sodium polyacrylic acid and polyacrylamides.
Get PriceFlotation depressants / Applications / HomePionera
Flotation depressants Selective depressants for mineral flotation processes PIONERA s BioPolymers are versatile additives that increase returns for our customers. Application results in important savings with minimal Health Safety or Environmental issues.
Get PriceUse of depressants in the direct flotation of a silicate
1. Introduction. Flotation is the most common concentration process used by the mineral industry both in quantity of ores processed and in diversity of applications (Peres et al 2007).At present over 2 x 10 9 t per year of ore is estimated to be processed through flotation. In Brazil this technique played an important role in the growth of the mineral sector especially in the
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understanding of mineral processing problems. For example metal ion adsorption James Healy model and Hunter s work on clays In North America Gaudin is a legend. Fuerstenau Hogg the Finch McGill team Miller in Utah Somasundaran in NY Moudgil in Florida the UBC and U of A teams the US Bureau of Mines in past days.
Get PriceA Novel Mineral Flotation Process UsingThiobacillus
Oxidative leaching of metals by Thiobacillus ferrooxidans has proven useful in mineral processing. Here we report on a new use for T. ferrooxidans in which bacterial adhesion is used to remove pyrite from mixtures of sulfide minerals during flotation. Under control conditions the floatabilities of five sulfide minerals tested (pyrite chalcocite molybdenite millerite and
Get PriceNasacoMining Technology Mining News and Views Updated
The NASMIN range of depressants is widely used in the control of siliceous gangue minerals. Activators and surfactants in this range are used in promoting flotation and in electrowinning and electrorefining operations. The broad product range allows Nasaco to address specific mineral processing problems by providing the best chemical
Get Price(PDF) The effect of non-toxic depressants in chalcopyrite
presence of sodium sulfite International Journal of Mineral Processing 63 pp. 17-28. 5 Yamamoto T. 1980 Mechanism of de pression of pyrite and sphalerit e by sulphit e In
Get PriceFlotation Depressants ArrMaz
Depressants are often used to increase the efficiency of the flotation process by selectively inhibiting the interaction of one mineral with the collector for example the depression of quartzite to allow for more optimal apatite/collector interaction thus improving final recovery and grade.
Get PriceEffect of organic depressant lignosulfonate calcium on
In order to selectively separate chalcopyrite from pyrite the effect of organic depressant lignosulfonate calcium (LSC) on the flotation separation of chalcopyrite from pyrite was investigated by flotation tests. The depression mechanism was studied by Fourier-transform-infrared (FTIR) analysis. The flotation tests of single mineral show that LSC can depress the
Get PriceRole of Collectors and Depressants in Mineral Flotation A
A theoretical analysis was conducted to study the role of collectors and depressants in flotation based on the extended Derjaguin–Landau–Verwey–Overbeek (DLVO) theory where the hydrophobic force is considered. The collector-coated hydrophilic particle and the depressant-coated hydrophobic particle are simplified to a sphere uniformly covered with respectively
Get PriceFroth flotationWikipedia
Froth flotation is a process for selectively separating hydrophobic materials from hydrophilic.This is used in mineral processing paper recycling and waste-water treatment industries. Historically this was first used in the mining industry where it was one of the great enabling technologies of the 20th century.
Get PriceDepression of pyrite mineral with cyanide and ferrous
This paper presents the results of the examination of depressing effect of cyanide salts type reagents (NaCN K3 Fe(CN)6 and K4 Fe(CN)6 ) as well as ferrous/ferric salts (FeSO4 and Fe2(SO4)3) on the floatability of pyrite in the presence of xanthate as collector. The examinations show that all tested depressants reduce the collection ability of pyrite with K-butyl xanthate
Get PriceDextrin as a non-toxic depressant for pyrite in flotation
Sep 01 2004 · It is interesting to compare depression of pyrite by dextrin and sodium cyanide. Fig. 6 shows the floatability of pyrite with 10 −4 mol/l sodium isopropyl xanthate at pH 8 as a function of the concentration of the two depressants. The depression of pyrite takes place at a lower dextrin concentration in comparison to that needed with sodium
Get PriceArsenide depression in flotation of multi-sulfide minerals
A mineral separation process includes wet-grinding the ore to liberation of minerals oxidizing the slurry using air hydrogen peroxide or other oxidants and floating the valuable minerals at a pH between about 9.0 and 10.0 with a xanthate as collector and a combination of a polyamine and a sulfur containing species as depressants for arsenide minerals.
Get PriceRole of Collectors and Depressants in Mineral Flotation A
minerals Article Role of Collectors and Depressants in Mineral Flotation A Theoretical Analysis Based on Extended DLVO Theory Yaowen Xing 1 2 3 Xiahui Gui 3 Fırat Karakas 2 4 and Yijun Cao 3 1 School of Chemical Engineering and Technology China University of Mining and Technology Xuzhou 221116 China
Get Price(PDF) The effect of non-toxic depressants in chalcopyrite
presence of sodium sulfite International Journal of Mineral Processing 63 pp. 17-28. 5 Yamamoto T. 1980 Mechanism of de pression of pyrite and sphalerit e by sulphit e In
Get PriceAsh Depression in Fine Coal Flotation Using a Novel
Synthetic and naturally occurring polymers have been successfully used in mineral processing/coal preparation mainly as gangue depressants or dispersants to increase the combustible recovery of coal fines 4 - 10 . Reza et al. proposed selective flotation using sodium polyacrylic acid and polyacrylamides. In this method polymers were added to
Get PriceRole of Collectors and Depressants in Mineral Flotation A
A theoretical analysis was conducted to study the role of collectors and depressants in flotation based on the extended Derjaguin–Landau–Verwey–Overbeek (DLVO) theory where the hydrophobic force is considered. The collector-coated hydrophilic particle and the depressant-coated hydrophobic particle are simplified to a sphere uniformly covered with respectively
Get PriceMineral processing iiSlideShare
Apr 17 2014 · MINERAL PROCESSING-II Prepared By Ali Bux Wassan (12MN65) and there by prevents its flotation. Depressants can also remove the collector coating from mineral surface causing depression of the mineral.mineral surface causing depression of the mineral. Potassium per magnet (KMNO4) has depressing effect on most of the sulphide minerals
Get PriceMineral processing iiSlideShare
Apr 17 2014 · MINERAL PROCESSING-II Prepared By Ali Bux Wassan (12MN65) and there by prevents its flotation. Depressants can also remove the collector coating from mineral surface causing depression of the mineral.mineral surface causing depression of the mineral. Potassium per magnet (KMNO4) has depressing effect on most of the sulphide minerals
Get Price