metal ions sulphide flotation

the reasons may differ Some sulphide minerals can be floated without collectors while others require small quantities of collectors Chander (1999) reported the various reactions in sulphide mineral flotation such as the oxidation of the minerals hydrolysis of metal ions decomposition of metal salts and

Hydrogen sulfide

Hydrogen sulfide reacts with metal ions to form metal sulfides which are insoluble often dark colored solids Lead(II) acetate paper is used to detect hydrogen sulfide because it readily converts to lead(II) sulfide which is black Treating metal sulfides with strong acid often liberates hydrogen sulfide

water quality on the flotation of galena sphalerite chalcopyrite and pyrrhotite was carried out using asymmetrical fractional factorial design The multivariable analysis showed that of ten studied factors six (Cu2+ Zn 2+ Mg Ca2+ SO42- and PAX) have a significant influence on the flotation of these sulphide minerals

REVIEW: ADSORPTION OF IONS AND MOLECULES TO SOLID SURFACES IN CONNECTION WITH FLOTATION OF SULPHIDE MINERALS Ingmar Persson Department of Chemistry Swedish University of Agricultural Sciences P O Box 7015 S-750 07 Uppsala Sweden the mineral surface is oxidized and the metal ions are dissolved from the surface

CiteSeerX - Document Details (Isaac Councill Lee Giles Pradeep Teregowda): An approach to environmental sustainability and improved process economy in sulphide minerals production is recycling of process water in flotation of complex sulphide ores although the chemistry of process water may be a critical issue to flotation efficiency The influence of major

Method for improving selectivity and recovery in the

12 07 2016A method of using the synergy of multiple depressants to improve the depression of iron sulphide without compromising the recovery of the valuable sulphide minerals in the flotation of non-ferrous metal sulphides while reducing or eliminating the use of environmentally problematic chemicals such as polyamines

REVISITING SULPHIDE MINERAL FLOTATION: A FEW PRIORITIES AND DIRECTIONS There are still persistent problems in sulphide flotation of metal sulphides selectivity against pyrite and among sulphide minerals inadvertent activation of silicate gangue by metal ions hetero-coagulation between sulphide and gangue minerals and recovery of fine

which in turn influence the potential range of subsequent flotation (Eric Forssberg 1985 Eric Forssberg 1990) 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

The next section describes these effects on the flotation of specific sulphide minerals EFFECT OF GRINDING MEDIA ON SULPHIDE MINERAL FLOTATION Significant progress has been made in recent years in identifying the role grinding media can play in flotation

However process water chemistry may be a critical issue to flotation efficiency Process water discharged from sulphide flotation circuits are usually gypsum (CaSO4 H2O) saturated and have a high salinity The major ionic species contained in the process water are Ca2+ and SO42- ions

metal flotation process plant

Metal Flotation Process Plant About us Van Dalen Metals Recycling Trading Van Dalen Metals Recycling and Trading is a two mobile shear plants two baler installations and a non-ferrous metal flotation plant processing on average SGS – Flotation – Mining Mobile Metal Ions (MMI) MMI Orientation Surveys Digestion Fusion

Previous research has showed that the unavoidable metal ions in process water such as Ca2+ and Mg2+ ions affect the flotation of silicate minerals significantly [9–14] Lu et al [15] described the depression effects of Ca2+ ions on andalusite and the results showed that both Ca2+ ions and [CaOH]+ could

REVISITING SULPHIDE MINERAL FLOTATION: A FEW PRIORITIES AND DIRECTIONS There are still persistent problems in sulphide flotation of metal sulphides selectivity against pyrite and among sulphide minerals inadvertent activation of silicate gangue by metal ions hetero-coagulation between sulphide and gangue minerals and recovery of fine

Effect Of Water Composition On Flotation Of Lead And Metal ions in these water resources were adsorbed on the ore whilst ions associated with gangue minerals were released into the flotation pulp This paper includes a research for the effect of different water compositions on lead and zinc sulphide flotation Live Chat

Flotation of pyrolusite (MnO2) with 1x10-4M oleate Activation of quartz by metal ions A further example of hydroxy-complex formation The solubility of quartz is very limited and the only cation from the mineral is silicon Thus quartz activation for flotation by anionic collectors requires metal ions in the pH ranges in which they form hydroxy

The studied metal cations can activate quartz at a particular pH It can be inferred from solution chemistry and zeta potential measurement that the influence of metal ions on the flotation of different minerals should be attributed to the adsorption of various hydrolysis species on the mineral surfaces

RECYCLING PROCESS WATER IN COMPLEX SULPHIDE ORE FLOTATION

which in turn influence the potential range of subsequent flotation (Eric Forssberg 1985 Eric Forssberg 1990) 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

The studied metal cations can activate quartz at a particular pH It can be inferred from solution chemistry and zeta potential measurement that the influence of metal ions on the flotation of different minerals should be attributed to the adsorption of various hydrolysis species on the mineral surfaces

The results of H2O2 formation in pulp liquid of sulphide minerals and mixed minerals at different experimental conditions have been explained by Eh–pH diagrams of these minerals and the existence of free metal ions that are equally responsible for H2O2 formation besides surfaces catalytic activity

Effect of seawater main components on frothability in the flotation of Cu-Mo sulfide ore 19 Frothing agents are employed in flotation to facilitate air dispersion into fine bubbles and to stabilize the froth Froth stability depends on the frother type and concentration but also is a function of other variables such as particle size

The major constituents of the Inco matte chalcocite (Cu2S) and heazlewoodite (Ni3S2) are separated by differential flotation with diphenylguanidine as collector To select an effective organic depressant many dextrins were tested and tapioca dextrin 12 was found to have an exceptional affinity towards heazlewoodite surface at a particular pH of the mineral

Metal ions in these water resources were adsorbed on the ore whilst ions associated with gangue minerals were released into the flotation pulp This paper includes a research for the effect of different water compositions on lead and zinc sulphide flotation

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