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inorganic depressants for copper lead zinc ores flotation

May 24, 2002 Cyanide plays a role of varying importance in the metallurgy of gold, silver, copper, nickel, cobalt, lead, zinc, molybdenum, and cadmium. In the copper, lead, and zinc industries the primary uses for cyanides are as depressants for the flotation of iron and zinc minerals and for the reactivation of copper minerals in the flotation of molybdenite.

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CuPbZn CopperLeadZinc Ores Copper Lead Zinc Flotation

CuPbZn CopperLeadZinc Ores Copper Lead Zinc Flotation

The depressant of the present invention improves the selective flotation separation of copper-zinc sulphide ores, copper-lead-zinc sulphidic ores, lead-zinc and copper-nickel sulphides. The LS depressants, as discussed above, are reaction products of quebracho, guar gum or dextrin with lignin sulphonate further reacted with selected inorganic ...

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Sequential CopperLeadZinc Flotation

Sequential CopperLeadZinc Flotation

Typical lead-copper-zinc sulphide minerals were found hard to be separated selectively by froth flotation in the plant practice operation due to part of sphalerite was progressively entrapped into lead-copper bulk flotation. A series of de-zincing on lead-copper flotation tests has been conducted in the laboratory to reduce unwanted zinc content.

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Chapter 14 Flotation of LeadZinc Ores Engineering360

Chapter 14 Flotation of LeadZinc Ores Engineering360

The sequences of reagent additions in Cu-Pb flotation were pH regulator, zinc and pyrite depressants, copper-lead collectors, frother, and followed by copper-lead flotation. The dosages of zinc and pyrite depressants are 1500 g/t ZnSO4, 300 g/t NaHSO3 and 200 g/t of dextrin. Dosages of copper-lead collectors in a three stage

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separation by flotation of copper lead zinc sulphides

separation by flotation of copper lead zinc sulphides

May 24, 2002 Cyanide plays a role of varying importance in the metallurgy of gold, silver, copper, nickel, cobalt, lead, zinc, molybdenum, and cadmium. In the copper, lead, and zinc industries the primary uses for cyanides are as depressants for the flotation of iron and zinc minerals and for the reactivation of copper minerals in the flotation of molybdenite.

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DEZINCING OF LEADCOPPER SULPHIDE MINERALS

DEZINCING OF LEADCOPPER SULPHIDE MINERALS

30/03/2020 With respect to the flotation of copperleadzinc sulfide ores, copperlead mixed flotation is the most common method used to obtain a copperlead concentrate . Therefore, the separation of chalcopyrite and galena from a mixed concentrate is necessary. Depressants are a good choice to prevent galena from floating .

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Dispersion effect on a leadzinc sulphide ore flotation

Dispersion effect on a leadzinc sulphide ore flotation

In general, the most difficulty of the polymetallic sulfide ores separation is the separation among several kinds of ores, especially those low-graded ores with complex embedded features. Therefore, its a significant step for separating lead-zinc, copper-zinc, copper-lead to choose right flotation reagents.

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PDF Effect of different depressants on galena flotation

PDF Effect of different depressants on galena flotation

Current Situation on Flotation of Cu-Pb-Zn Sulfide Ore Jian-Tao Lang1, Si-Qing Liu2,*, Xu Dong3,Yi Pei4 1,2,3,4 Kunming University of Science and Technology, Kunming City, Yunnan Province, China *1326847906qq.com Keywords Copper-lead-zinc sulfide ore, Flotation process, Separation of bulk concentrate, Flotation column Abstract. In the flotation of copper - lead - zinc polymetallic sulfide ...

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FROTH FLOTATION RECENT TRENDS Flotation of

FROTH FLOTATION RECENT TRENDS Flotation of

Flotation tests on an industrial copperlead bulk concentrate showed that ... separation has been always one of the difcult problems in the processing of copper-lead zinc sulde ores 48. ... (CMC) (an organic depressant) and sodium silicate, sodium sulte, and zinc sul-fate (all inorganic depressants) was used as a depressant ...

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Use of nontoxic depressants in the selective flotation of

Use of nontoxic depressants in the selective flotation of

Sodium Cyanide Depressant for pyrite (FeS2), sphalerite (ZnS) in base metal ores Sodium Metabisulphite (SMBS) Depressant for pyrite (FeS2) and galena (PbS) for copper-lead-zinc ores Sodium Sulphite Depressant for pyrite (FeS2) in copper-zinc ores Zinc Sulphate Depressant for base metal ores Soda Ash Dispersant and pH control DSF Frothers Range ...

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Flotation Depressants Mineral Processing Metallurgy

Flotation Depressants Mineral Processing Metallurgy

lead-zinc ores, c) bulk flotation of copper-lead-zinc minerals followed by a selective ... Arsenic is one of the most hazardous inorganic pollutants for both the environment ... the number of flotation stages, depressant type and dosage were studied on the selective concentration of Cu, Pb and Zn minerals in the ore

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USE OF NONTOXIC DEPRESSANTS IN THE SELECTIVE

USE OF NONTOXIC DEPRESSANTS IN THE SELECTIVE

of sphalerite as composite particles during lead flotation, and (c) the pulp pH was best maintained at natural pH during pre-flotation and at an elevated alkaline pH (pH 9.5) during lead flotation for optimal selectivity. In terms of depressants it was found that zinc sulfate specifically depressed sphalerite during lead flotation.

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OPTIMISATION OF THE SELECTIVE FLOTATION OF

OPTIMISATION OF THE SELECTIVE FLOTATION OF

ore. Since dissolved copper and lead ions are usually present in the process water used at ... presence of inorganic depressants such as sodium cyanide and zinc sulphate. The ... The Rosh Pinah zinc-lead Mine 4 2.2. Flotation of sulphide minerals with thiol collectors 6

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Depressant for flotation separation of polymetallic

Depressant for flotation separation of polymetallic

3. Flotation of Sulphide Ores . Sulphide ores are the major sources of base metals like Copper, Lead, Zinc, Nickel and Cobalt. Beneficiation of these base metal sulphide minerals is predominantly through the froth flotation technique. Some of the most important sulphide minerals are Galena (PbS), Sphalerite (ZnS), Chalcocite (Cu. 2. S), Covellite

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SELECTIVE FLOTATION OF GALENA AND SPHALERITE AT

SELECTIVE FLOTATION OF GALENA AND SPHALERITE AT

etc. In most cases, lead-copper-zinc sulfide ores are grouped together in the deposits. In mineral processing industry, inorganic depressants such as sodium cyanide, potassium dichromate, sulfur dioxide, are routinely used in differential sulfide flotation (i.e., to separate the sulfide minerals from each other). One obvious disadvantage of ...

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Current Situation on Flotation of CuPbZn Sulfide Ore

Current Situation on Flotation of CuPbZn Sulfide Ore

relatively low concentration. Copper ion exchanges for zinc ion of the mineral surface, and the sphalerite particle then behaves in flotation like a copper sulphide particle. Depressants Depressants retard or inhibit flotation of a desired solid. The depressing agent is adsorpted on the particle

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depressants Tejaras Co

depressants Tejaras Co

Flotation reagents Flotation depressants abstract ... ticles in a leadzinc sulphide ore pulp as a tool for better under- ... 1989). Galena depression is a target in leadcopper systems, but is totally undesirable regarding the present investigation. Lange et al. (1997) reported that the otation of ne sphalerite ...

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Report on flotation pilot plant design and arrangement

Report on flotation pilot plant design and arrangement

History of Sulphide ore flotation dates back to beginning of 20th century. Sulphide ores are major sources of base metals like Copper, Lead, Zinc, Nickel, Cobalt etc. Beneficiation of these base metal sulphide minerals is predominating through froth flotation technique. This technology has acclaimed importance as a versatile process for

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US5693692A Depressant for flotation separation of

US5693692A Depressant for flotation separation of

Zinc Sulfate Used alone, or in combination with cyanide, for depression of Zn minerals in the flotation of Pb/Zn, Cu/Zn, and Cu/Pb/Zn ores. Sodium Metabisulphite/SMBS Depression of Zn sulphide (sphalerite) and Fe sulphide (e.g. pyrite, pyrrhotite) minerals. Hydrate Lime Depressant for pyrite during copper and zinc flotation and in other ...

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Froth Flotation Process Detailed Explanation With

Froth Flotation Process Detailed Explanation With

Most of the lead-zinc ore contains silver and to a lesser degree, gold. Almost 85% of the silver production in the world comes from lead-zinc ores. Silver recovery in a large number of ores, specifically from South America, is emphasized, and some of these circuits were in fact designed to provide the highest possible silver recovery.

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Selection and evaluation of different depressants systems

Selection and evaluation of different depressants systems

Mar 16, 2020 Due to the difficulty of activation after the depression of galena and other sulfide ores, a zinc depression and lead floatation process is usually used. The choice of the sphalerite depressant is critical when separating zinc and other sulfides. The traditional sphalerite depressants are generally inorganic.

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Mineral Processing and Metallurgical Treatment of Lead

Mineral Processing and Metallurgical Treatment of Lead

The Rosh Pinah zinc-lead sulphide deposit occurs in the Southwestern part of Namibia, close to the Orange River. Underground operations and housing projects started in 1967 and the mine came into production in 1969 (Van Vuuren, 1982). The Rosh Pinah Mine treats a composite of copper-lead-zinc sulphide ores from various sites.

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ALTERNATIVES FOR SODIUM CYANIDE FOR FLOTATION

ALTERNATIVES FOR SODIUM CYANIDE FOR FLOTATION

Depending on the ore composition in sulfide scavenger flotation, sphalerite as zinc concentrate II or mixed lead-zinc concentrate were recovered. The scavenger section consisted of rougher and one cleaner with copper sulfate, a mixture of amyl and ethyl xanthates (12), and Aerofloat 25

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Separation of polymetallic sulphides by froth flotation

Separation of polymetallic sulphides by froth flotation

A new depressant for use in enhanced separation of polymetallic sulphides is described. The depressant agent is used in conjunction with conventional collector agents and frothing agents in the flotation separation of copper, nickel, lead, zinc sulphides by depressing iron sulphides such as pyrrhotite, pyrite and marcasite in the tailing.

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Effect and mechanism of potassiumpermanganate

Effect and mechanism of potassiumpermanganate

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.

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