Sulphide Leaching - Mineral Processing & Metallurgy

Methods of leaching sulphide ores can be: in absence of oxidizing agents in presence of oxidizing agents Bacterial leaching Absence of oxidizing agents Acid leaching: Dilute acids dissolve some metal sulphides with liberation of H2S, e.g. ZnS + 2H+ ^ Zn2+ + H2S Three types of …

leaching and adsorption processing sulfide ores new

May 31, 2017 · leaching and adsorption processing sulfide ores new High Pressure Leaching Hazen Research. Examples of this include pressure oxidation (POX) of sulfide ores and concentrates, high pressure acid leaching (HPAL) of nickel laterites, and wet air oxidation of organics.

Recovery of Sulfur and Accessory Metals from a Leaching ...

Sodium sulfide was regenerated by reacting the h2s byproduct with the base in the catholyte. 5. Lead as pbcl2 was recovered from the anode residue by brine leaching, and the other metals were recovered from the sodium salt solution as metal sulfides.

Leaching of Lead Sulfide with Nitric Acid | Request PDF

Galena, lead sulfide, is leached with nitric acid in order to prepare higher value-added products such as lead nitrate, lead carbonate, lead basic carbonate, etc. Leaching behavior has varied with ...

Leaching of Lead Sulfide with Nitric Acid: Geosystem ...

Galena, lead sulfide, is leached with nitric acid in order to prepare higher value-added products such as lead nitrate, lead carbonate, lead basic carbonate, etc. Leaching behavior has varied with the concentration of nitric acid.

Leaching of zinc sulfide in alkaline solution via chemical ...

The lead sulfide formed thus in leaching residue should be recycled. Much work has been done on the conversion of galena to lead carbonate in ammonium or sodium carbonate solution (Lu et al., 1986, Gong and Chen, 1993). It has been shown that the conversion of lead is effective and cost-effective.

What is the best method for sulfide copper leaching?

The electrochemical theory of leaching introduced in the late 1960s resolved this problem by comparing the leaching process to a corrosion phenomenon similar to the corrosion of metals.

Zinc smelting - Wikipedia

The electrolysis process, also known as the hydrometallurgical process, Roast-Leach-Electrowin (RLE) process, or electrolytic process, is more widely used than the pyrometallurgical processes. [2] The electrolysis process consists of 4 steps: leaching, purification, electrolysis, and melting and casting.

Recovery of Sulfur and Accessory Metals from a Leaching ...

Sodium sulfide was regenerated by reacting the h2s byproduct with the base in the catholyte. 5. Lead as pbcl2 was recovered from the anode residue by brine leaching, and the other metals were recovered from the sodium salt solution as metal sulfides.

Leaching of Lead Sulfide with Nitric Acid | Request PDF

Galena, lead sulfide, is leached with nitric acid in order to prepare higher value-added products such as lead nitrate, lead carbonate, lead basic carbonate, etc. Leaching behavior has varied with ...

Leaching of Lead Sulfide with Nitric Acid: Geosystem ...

Galena, lead sulfide, is leached with nitric acid in order to prepare higher value-added products such as lead nitrate, lead carbonate, lead basic carbonate, etc. Leaching behavior has varied with the concentration of nitric acid.

method of leaching copper sulfide ores

With a leaching agent to copper ore, or calcine valuable components such as copper in is mainly dissolved copper oxide minerals, iron sulfide minerals are dissolved copper. The method has been applied to industrial production or reach. Get Price iron ore crushing and screening plant , lead plant , lead

Recovery of Silver, Gold, and Lead From a Complex Sulfide ...

Recovery of Silver, Gold, and Lead From a Complex Sulfide Ore Using Ferric Chloride, Thiourea, and Brine Leach Solutions By R. G. Sandberg and J. L. Huiatt UNITED STATES DEPARTMENT OF THE INTERIOR ... pended to investigate the FeC13 leaching phase of the process. However, because Wong's work was with a high-grade galena concentrate (74 pct Pb ...

Process development for hydrometallurgical recovery of ...

Two routes were investigated to selectively recover lead and minor metals (Cu, Ni, Zn) from a sulfide-rich lead smelter residue, matte. The first route comprises a two-step leaching process that combines Fe(III)-HNO 3 leaching with roasting, followed by water leaching.

manganese leaching sulfide - Mineral Processing EPC

Feb 24, 2018 · Ore Flotation Separation Process Wholesale, Ore Flotation . Copper Flotation Separation Ore Froth Refining Machine Heap Leaching Gold Process .. 0.15~ 24m3 Flotation Cell Price , Flotation Cell Price for Iron Manganese . Sulfide ore froth flotation cell, …

Direct Leaching of sulfides: Chemistry and applications

Direct Leaching of Sulfides: Chemistry and Applications ERNEST PETERS The sulfide minerals associated with copper, nickel, zinc, lead, and molybdenum concen- trates are described according to their thermodynamic stability zones on Eh-pH dia- grams.

Lead Sulfide Smelting- - Metalcess

Lead oxide ore, mainly in the form of cerussite and anglesite, is originated from primary lead sulfide ore which gradually changed its property under efflorescence and carbonate salt environment. In a lead deposit, lead oxide and lead sulfide usually is detected at the upper layer and lower layer separately.

US4082629A - Hydrometallurgical process for treating metal ...

A process for the treatment of complex lead sulfide-containing concentrates additionally containing at least one metal of the group consisting of iron, copper, zinc, silver, arsenic, antimony, bismuth and gold which comprises the steps of selectively leaching a concentrate with iron-containing lixiviant for converting lead sulfide in said concentrate to lead chloride and forming a leach ...

Recovery of tellurium from high tellurium-bearing ...

A possible process for the recovery of tellurium from antimony and tellurium materials by alkaline sulfide leaching followed sodium sulfite precipitation was proposed. The tellurium and antimony materials were leached in 100 g/L Na 2 S solution at 80 °C for 60 min with L/S ratio of 10:1, in which 91.24% Te and 92.51% Sb were extracted into leaching solution, while leaving lead, bismuth, iron and zinc in the …

New developments in indirect bioleaching of zinc and lead ...

The new developments for indirect bioleaching of zinc and lead sulfides allow efficient operation of both process stages: ferric sulfate leaching and biological ferrous ion bio-oxidation, which ...

Adoption of Heating Flotation in Sulfide-lead-zinc Mining ...

We will briefly introduce three heating process used in sulfide-lead-zinc flotation processing. Heating for accelerating agent desorption. Adding pme into a slurry when stirring and heating, in order to drop the xanthate in the surface of sulfide. Proved by practice, 5 to …

Zinc - Essential Chemical Industry

The most important reaction is the conversion of zinc sulfide to zinc oxide: However, any iron sulfide present in the ore will be converted to iron(III) oxide, which reacts with zinc oxide to form zinc ferrite: In the simple leaching process, this zinc cannot be easily recovered and so …

THE ALKALINE SULFIDE HYDROMETALLURGICAL SEPARATION ...

2.1 Alkaline Sulfide Hydrometallurgical Treatment of Lead Smelter Speiss The formation of speiss in lead smelters is a common occurrence and poses process problems in that significant levels of precious metals are accumulated in the resultant arsenides and antimonides. An example of hydrometallurgical treatment follows.

effect of lead nitrate on gold leaching - durbanlizards.co.za

Effect of lead nitrate on cyanidation of gold ores ... Science Direct. This paper discusses some of the latest efforts to improve the understanding of the use of lead nitrate in cyanidation.

Process Development - Alaska DGGS

Within the research program, complex sulfide ores are treated by ferric chloride leaching to dissolve zinc, lead, copper and silver. Leach residue is treated for gold recovery and the resulting leach liquor is directed to lead, copper, silver and zinc recovery steps.

Refining Primary Lead by Granulation–Leaching–Electrowinning

(b) Pilot plant for leaching and electrowinning lead (1) leach tank, (2) cementation tank. A pilot plant was designed and built by Engitec Impianti to demonstrate the …

Leaching of zinc sulfide in alkaline solution ... - DeepDyve

Read "Leaching of zinc sulfide in alkaline solution via chemical conversion with lead carbonate, Hydrometallurgy" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

US4082629A - Hydrometallurgical process for treating metal ...

A process for the treatment of complex lead sulfide-containing concentrates additionally containing at least one metal of the group consisting of iron, copper, zinc, silver, arsenic, antimony, bismuth and gold which comprises the steps of selectively leaching a concentrate with iron-containing lixiviant for converting lead sulfide in said concentrate to lead chloride and forming a leach ...

leaching of a roasted copper sulfide ore - Mineral ...

Without Cyanide Leaching Gold Agent . View larger image ... ore dressing reagents collector for sulfide used for gold mine bk901 beijing BK901. ... Add to Compare . Cooked Zinc. Add to Compare .. Iran Lead Zinc Ore . Zinc Leaching Process Waste. Quotation More. Prev: m 170kpa brushless diaphragm electric 24v vacuum ... place where leaching ...

Lead sulfide | PbS - PubChem

The lead sulfide (PbS) in galena is insoluble and absorption from the lung is limited; however, in the stomach, some lead sulfide may be converted to slightly soluble lead chloride which may then be absorbed in moderate quantities.

Method for the recovery of lead from materials containing ...

Jan 26, 1982 · Lead sulfide containing raw materials, including lead sulfide containing ores and concentrates, e.g., galena, are continuously charged into the leaching vessel 1 as indicated by arrow 3. Generally, from about 20 to 300 grams, and preferably 40 to 60 grams of lead sulfide are present per liter of leaching solution.

Physico-chemical investigation of synthesis of lead salts ...

Abstract: The leaching of lead from lead–zinc concentrates by iron(III) salt solutins in the absence, as well as in the presence of mineral acids (HCl, H 2SO 4, HNO 3)has been investigated. It was shown that the leaching of lead by means of 0.3 M Fe(NO 3) 3 at (22 ± 1) ºC leads to practically complete recovery of lead during 1 h.

EXTRACTING METALS FROM SULFIDE ORES - Electrochemical …

Biochemical leaching is now a well-established commercial process for treating gold ores in which the gold is enclosed within sulfide minerals. Biochemical oxidation of the sulfide minerals releases the gold and allows it to be leached by the chemicals used in conventional gold leaching.

Complex Sulfides Processing of Ores Concentrates and By ...

New Possibilities in the Extraction of Gold and Silver from Zinc and Lead Sulfide Flotation Wastes Recovery of Platinum, Palladium, and Gold from Stillwater Complex Flotation Concentrate Concentrating a Complex Cobalt and Nickel Sulfide from Missouri Lead Ores by Continuous Froth Flotation

Lead and Zinc Smelting - IFC

ties of residual lead sulfide and lead sulfates in the sinter feed. Rough lead bullion from the blast furnace usu-ally requires preliminary treatment in kettles be-fore undergoing refining operations. During drossing, the bullion is agitated in a drossing kettle and cooled to just above its freezing point, 370°–425°C (700°–800°F).

INVESTIGATION OF LEACHING KINETICS OF CERUSSITE IN …

using a cost-effective alkaline leaching process through the addition of sodium sulfide, which produced less than 10% of Al impurities. Similarly, Liu et al. (2011) developed an alkaline leaching process for the production of lead concentrates from lean oxidized ores. In this process the lead concentrations were highly selectively and ...