Sodium Sulfite Ore Flotation
Flotation of sphalerite and pyrite in the presence of sodium sulfite
Sodium sulfite (Na 2 SO 3 ) was used as a pyrite depressant in separation of sphalerite and pyrite using flotation [12] and in a complex ore containing enargite and chalcopyrite [13]. Houot and ...
Role of Sodium Sulfide – Copper Lead & Zinc Ore Flotation
This review on the role of sodium sulfide in the flotation of copper, lead, and zinc ores resulted in the following conclusions: In mineral pulps though oxygen is one of …
Microscale exploration of the sulfidization flotation theory in
Subsequently, the chemical compositions of the malachite surface in its natural ore state and after treatment with sodium sulfide were determined using XPS. Due to the thin thickness of sulfide products on the malachite surface, to facilitate the analysis of chemical composition, a high concentration of sodium sulfide solution (0.5 mM) was ...
Dispersion effect on a lead–zinc sulphide ore flotation
The reagent not only decreases lead grade and recovery in the concentrate, but also increases sharply zinc losses. The activation of sphalerite by dispersants may be explained by the fact that disperse fine galena particles are prone to surface oxidation and, thus releasing Pb 2+ ions in solution. Lead cations are well-known sphalerite activators …
Effect of sodium silicate on the flotation separation of …
A combination depressant SHI was composed of sodium sulfite (Na 2 SO 3) and sulfonated lignin (SL) in a 5:1 M ratio.In this study, SHI and sodium silicate (Na 2 SiO 3) were employed to inhibit the floatability of galena, and the synergies between agents was explored.Micro-flotation results shown that after 2.4 × 10 −4 mol/L SHI was added, …
The depression of pyrite in selective flotation by different …
Shen et al. (2001) achieved the maximum separation of copper-activated sphalerite from pyrite by sodium sulfite when oxygen conditioning was performed and the time interval between additions of sulfite and xanthate was short. ... Dithiophosphinates are relatively new collectors for sulfide ore flotation.
Copper-Lead Oxide Ore Flotation Chemical Sodium Sulfite
Copper-Lead Oxide Ore Flotation Chemical Sodium Sulfite US$2,500.00-2,700.00 / Ton: 1 Ton (MOQ)
Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical Review
The most common copper sulfide flotation collectors are the hydrogen sulfide (-SH) class, also known as thiols, sulfhydryl group, or mercapto group (C-S). ...
Basic principles of selecting separation methods for sulfide …
The article gives analytical and experimental data on separation of sulfide minerals in bulk concentrates of complex ores. The separation methods for minerals having similar process properties are selected. It is found which factors influence mineral separation efficiency in concentrates of rebellious and complex ore processing. The …
Investigations on the depressant effect of sodium alginate …
The results could be potentially used for selecting suitable collector type in some sulfide ore flotation plants when sodium alginate acted as galena depressant. Introduction. Galena is a common and typical lead-containing mineral on the earth (Chen et al., 2011, Huang et al., 2019b, Wang et al., 2019). ... 2016). Sulfite, sodium sulfite and ...
Copper Sulfide Ore and Flotation Process
Copper Sulfide Ore and Flotation Process. by JXSC Mining. ... The effective inhibitors are sodium sulphate, sodium sulfite, potassium ferricyanide and potassium …
Four Flotation Methods for Copper-Nickel Sulfide …
In the mixed flotation operation, it is more suitable to deal with copper-nickel sulfide ore containing magnesium silicate gangue minerals with low grade, complex dissemination relationship, easy ...
The role of sodium metabisulphite in depressing pyrite in …
The use of sodium sulphite to improve the flotation selectivity between chalcopyrite and galena in a complex sulphide ore. Miner. Eng. ... R. Houot et al. Floatability of chalcopyrite in the presence of dialkyl-thionocarbamate and sodium sulfite. Int. J. Miner. Process. (1993) T.N. Khmeleva et al. Surface study of the effect of sulphite …
(PDF) Effect of Sodium Sulfite on Floatability of …
Sodium hydrogen sulfide (NaHS) is commonly used as a copper depressant in the selective flotation of copper and molybdenum ores. However, the process is facing health and safety issues because ...
Flotation of Gold and Gold-Bearing Ores
The first detailed laboratory study of the influence of sodium sulfide on the flotation of gold-bearing ores was undertaken in the mid-1930s (Leaver and Woolf, …
Flotation of Lead-Zinc Sulphide Ore
Lead-zinc ore flotation. ... (SO2), sulphurous acid (H2SO3), sodium sulfite, and sodium thiosulfate. Sulphur dioxide dissolves in water to form sulphurous acid: ...
Flotation Depressant
(4) Sodium sulfide. Used as a depressant of sulfide ore in flotation operations, such as the use of sodium sulfide to depress pyrite in the production of …
CN102423728A
The invention discloses a flotation method for a copper-containing nickel sulfide ore. In order to solve the problem that nickel-containing sulfide is easily oxidized in the flotation process, the invention provides a flotation method which can ensure that the nickel-containing sulfide is not oxidized and can make a part of oxidized nickel ore activated, …
Chalcopyrite and pyrite floatabilities in the …
Pyrite recovery was sharply increased by the addition of sodium sulfide in light of sodium sulfide-induced collectorless flotation; however, it showed a very weak effect on chalcopyrite floatability. In …
Flotation of Gold and Gold-Bearing Ores
Depressants for native gold that are usually introduced during the flotation process include compounds such as calcium ions, chloride ions, calcium carbonate, cyanide, sodium silicate, sodium sulfite, ferric and heavy-metal ions, tannin and related compounds, starch and other organic depressants, and many others (Taggart, 1945, …
Flotation of Lead-Zinc Sulfide Ore
Lead-zinc ore flotation . Lead-zinc ore is a polymetallic mineral rich in elemental lead and elemental zinc, mainly in the form of sulfide lead-zinc ore and oxide lead-zinc ore. ... (H 2 SO 3), sodium sulfite, and sodium thiosulfate. Sulfur dioxide dissolves in water to form sulfurous acid: SO 2 +H 2 O=H 2 SO 3. The solubility of sulfur …
Flotation Depressant
(4) Sodium sulfide. Used as a depressant of sulfide ore in flotation operations, such as the use of sodium sulfide to depress pyrite in the production of molybdenum mineral processing. (5) Water glass. It is a commonly used as depressant of quartz, silicate, and aluminosilicate minerals, and has a certain dispersing effect. (6) …
The use of sodium sulphite to improve the flotation …
Minerals Engineering, Vol. 5, Nos. 3-5, pp. 343-355, 1992 0892-6875/92 $5.00 +0.00 Printed in Great Britain 1992 Pergamon Press plc THE USE OF SODIUM SULPHITE TO IMPROVE THE FLOTATION SELECTIVITY BETWEEN CHALCOPYRITE AND GALENA IN A COMPLEX SULPHIDE ORE R. HOUOTand D. DUHAMET!
Understanding the effect of sulphate in mining-process …
The decrease in Cu grade with increasing flotation time is attributed to an increase in the recovery of the other minerals present in the ore (sphalerite, pyrite and quartz), especially at flotation times>8 min (2nd concentrate) as shown in Fig. 11. The Cu grade also decreases with increasing sulphate concentration as a result of less Cu and ...
The role of oxidizer in the flotation separation of chalcopyrite and
The influence of oxidizer hydrogen peroxide (H 2 O 2) on the chalcopyrite and galena flotation separation using sodium lignosulfonate as the depressant was studied and the mechanism of H 2 O 2 enhance depression action of sodium lignosulfonate was discussed in this study. The results show that both chalcopyrite and galena have good …
Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical Review
Nowadays, froth flotation of chalcopyrite ore has developed a large number of reagents that make it possible to improve the mineral's buoyancy conditions, both in the presence of ions that simulate the use of seawater or process water, and in conjunction with other minerals. ... Depressants: Sodium sulfite and sodium silicate. Frother: oil ...
Unlocking High-Value Metals: Efficient Flotation Techniques …
The pH was maintained at 8.5 during the flotation test. The sodium metasilicate dosage was 1000 g/t, the sodium sulphide dosage was 1500 g/t, the potassium amyl xanthate (PAX) dosage was 100 g/t, and the frother (MIBC) dosage was 45 g/t. ... The results obtained in the experimental flow-sheet of lead- and silver-rich ore …
Flotation of Lead-Zinc Sulfide Ore
Lead-zinc ore flotation. Lead-zinc ore is a polymetallic mineral-rich in elemental lead and elemental zinc, mainly in the form of sulfide lead-zinc ore and oxide lead-zinc ore. ... (H 2 SO 3), sodium sulfite, and sodium thiosulfate. Sulfur dioxide dissolves in water to form sulfurous acid: SO 2 +H 2 O=H 2 SO 3. The solubility of sulfur …
Efficient desorption and reuse of collector from the flotation
Run-of-mine ore flotation tests revealed that the reuse of desorbed Pb and BHA reduced the collector dosage by 30% for BHA and 25% for Pb. The strong alkali environment broke the chemical bonds between Pb and BHA. ... Application and depression mechanism of sodium sulfite on galena-pyrite mixed concentrate flotation separation: …
Study on flotation recovery of typical carbon-bearing lead …
The remaining samples were blended and miniaturize for spare parts, and 600 g of the samples were ground to the appropriate grain size before each flotation test. In the flotation test, sodium sulfite (Na 2 SO 3, Sinopharm Group Chemical Reagent Co., Ltd), zinc sulphate (ZnSO 4-7H 2 O, analytical grade, Tianjin Yongda Chemical Reagent …
Floatability of chalcopyrite in the presence of dialkyl-thionocarbamate
The use of sodium sulfite in the flotation of sulfide ores using a dialkyl-thionocarbamate as collector enables us to obtain, in most cases, a good selectivity for copper sulfide from other sulfides. ... FLOTATION WITH SYNTHETIC ORE 277 With a cast iron laboratory batch mill (and lime as pH regulator), the agreement with natural ore is …
The Role of Soluble Sodium Silicate for Enhancing Flotation …
With the recent increasing use of hydroxamic acid collectors in rare earth flotation, sodium silicate is used to depress gangue silicates prior to the addition of the collector [27, 28]. At low alkaline conditions (pH 9.0), the depressing action of sodium silicate upgraded a rare earth concentrate from 9.8–12 to 34–55% TREO content .
Role of sodium sulfide in the flotation of oxidized copper, …
This paper reviews uses of sodium sulfide in the flotation of oxide minerals of copper, lead, and zinc. The activation and depression effects of sodium sulfide are of …
Alternatives For Sodium Cyanide For Flotation Control, …
The three reagents selected and tested were sodium sulfite, sodium sulfide, and sodium thiosulfate. Phase II consisted of interviewing company officials and operators in the copper- lead-zinc industry. ... Key words which were used in the broadly defined search were the following: flotation, ore treatment, chalcocite, chalcopyrite, sphalerite ...
Behavior and mechanism of sodium sulfite depression of almandine from
Sodium sulfite has been utilized in the mineral industry principally as a depressant for a variety of sulfide ores. In this study, it was tested as a depressant in flotation of oxidized ore from its silicate mineral gangue. Selective flotation of rutile from almandine was investigated using sodium sulfite as a regulator and an octadecyl …