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Lead/Zinc Separation Process and Circuit Flowsheet. Extensive batch and pilot plant testing and actual plant operating experience has established the above flowsheet as typical for the average zinc sulfide ore containing galena and usually pyrite in a lime or siliceous gangue.
Sodium silicate is employed as a deflocculator of gangue slime in cases where the latter is too floatable to be kept out of the concentrate by any other means. Its application is confined mainly to the flotation of lead and zinc ores and tailings.
The flotation of lead mineral from a low grade lead–zinc sulfide ore has been investigated using a laboratory scale mechanical flotation cell. The effect of various operating parameters including type and concentration of collectors, pulp pH, grinding time, solidinpulp concentration on the flotation behavior of lead mineral have been studied.
Table of ContentsChemistry of Sodium SulfideSulfidization Sodium Sulfide in Sulfide Minerals Flotation Sodium sulfide is one of the most widely used alkali metal sulfides in the flotation of copper, lead, and zinc minerals in their oxidized form. The sulfidization process, developed in the in 191520 for oxide copper minerals flotation, is especially suitable for oxidized lead ores in ...
Also, the recovery of silver minerals occurring in a lead, zinc sulfide ore is efficiently accomplished using Flowsheet #2. The process consists of selective flotation to produce a mixed silver, lead concentrate for maximum smelter return and a separate zinc concentrate.
Flotation experiment research on a polymetallic sulfide ore of Cu, Pb, and Zn in Shanxi province ... flotation – copper/lead separation priority flotation zinc and pyrite from the bulk flotation tailings was used. The ... 1000g/t of Zinc sulfate, 500 g/t of sodium sulfate, 40 g/t of Z200, 40 g/t of ...
Sodium Sulfide. Oxidized minerals of lead, zinc, and copper, such as cerussite, smithsonite, azurite, and malachite, float poorly with sulfhydryl collectors due to a combination of collector loss through precipitation by heavy metal ions dissolved from the mineral lattice, and collector coatings that are weakly anchored and readily removed by ...
Where the oxide lead minerals are present in appreciable amounts, it is the usual practice to float the lead sulfides first. Then, if present, the zinc sulfide is floated, followed by flotation of the lead minerals. Either sodium sulfide or sodium hydrosulfide is used as a sulfidizing agent.
Sodium sulfide is the chemical compound with the formula Na 2 S, or more commonly its hydrate Na 2 S·9H 2 are colorless watersoluble salts that give strongly alkaline solutions. When exposed to moist air, Na 2 S and its hydrates emit hydrogen sulfide, which smells like rotten commercial samples are specified as Na 2 S·xH 2 O, where a weight percentage of Na 2 S is specified.
use of sulfide sodium in lead zinc flotation powerpoint Silver Lead Zinc Ore Processing Method using Flotation. Also, the recovery of silver minerals occurring in a lead, zinc sulfide ore is efficiently accomplished using Flowsheet #2.
The most common zinc ore is sphalerite (zinc blende), a zinc sulfide mineral. The largest workable lodes are in Australia, Asia, and the United States. Zinc is refined by froth flotation of the ore, roasting, and final extraction using electricity (electrowinning).
Sulphidization flotation for recovery of lead and zinc from oxidesulfide ores Article in Transactions of Nonferrous Metals Society of China 15(5): · October 2005 with 93 Reads
of sphalerite as composite particles during lead flotation, and (c) the pulp pH was best maintained at natural pH during preflotation and at an elevated alkaline pH (pH ) during lead flotation for optimal selectivity. In terms of depressants it was found that zinc sulfate specifically depressed sphalerite during lead flotation.
[Show full abstract] depression and cleaning of mineral surfaces by sodium sulfide for selective copperzinc flotation. The ores have high recoverable values; 70 and 95 /t, for the 13 degree N and ...
In the flotation of oxidized zinc using sodium sulfide, and flotation with a cationic collector, using Armac C or dodecylamine, produced best results. Using an amine emulsion with elevated additions of fuel oil and pine oil emulsion could be beneficial. It is proper .
Various process chemicals are used in the frothflotation of metallic ore of uranium, copper, zinc, lead, and iron. The flotation chemicals are mainly Isooctyl Acid Phosphate, Sodium Isopropyl Xanthate and Potassium Amyl Xanthate as conditioner and collector, MIBC as frothers, and sodium cyanide and copper sulfate as depressors.
use of sulfide sodium in lead zinc flotation powerpoint ... PPT – 2010 Flotation PowerPoint presentation | free to ... View by Category Presentations Photo Slideshows Presentations (freetoview) Presentations (paytoview) Products 3D Characters for PPT 3D ... Customer Service.
[Show full abstract] depression and cleaning of mineral surfaces by sodium sulfide for selective copperzinc flotation. The ores have high recoverable values; 70 and 95 /t, for the 13 degree N and ...
The interaction of various concentrations of sodium sulfide, dodecylamine (DDA) and oleic acid (OA) on smithsonite were investigated at different pH ... Alesse, V., and Garbassi, F., 1984, "Role of sodium sulphide, xanthate and amine in flotation of leadzinc oxidized ores," Inst. of Mining Metallurgy, pp. 125–136. Google Scholar. ...
Lead is recovered from lead sulfide concentrates or mixed leadzinc concentrates containing iron sulfide by forming a slurry of such concentrates in an aqueous medium containing ammonium sulfate and free ammonia, and introducing such slurry into a closed reaction vessel at a pressure not exceeding 30 psig. Oxygen also is introduced into such vessel to establish therein a partial oxygen ...
Froth flotation is a process for selectively separating hydrophobic materials from is used in mineral processing, paper recycling and wastewater treatment industries. Historically this was first used in the mining industry, where it was one of the great enabling technologies of the 20th century.
Flotation of Aladag oxide leadzinc ores. ... The sulfidizing agents such as sodium sulfide are normally decanted to condition cerussite ... the recoveries of zinc and lead in flotation ...
1 Froth Flotation – Fundamental Principles Froth flotation is a highly versatile method for physically separating particles based on differences in the ability of air bubbles to selectively adhere to specific mineral surfaces in a mineral/water slurry. The particles with attached air .
Abstract. 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 particular importance because of their applications with oxidized lead and copper ores.
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