batch concentrate leaching

Bioprocess for Leaching of Copper Concentrate

The acid leaching under batch conditions at 50 176 C and pH 12 during 22 hours led to 406 of copper recovery from the concentrate Subsequent ferric leaching of the acid leach residue at 80 176 C Bioprocess for Leaching of Copper Concentrate Advanced Materials Research Vol 1130 pp 359-362 2015...

The leaching and adsorption behaviour of gold ores

concentrate showed an enhancement in gold extraction due to the activated carbon adsorbing gold that would otherwise have been preg-robbed However this mechanism did not explain the behaviour of the pyrite concentrate 27 DIAGNOSTIC LEACHING 28 BATCH MODELLING 281 Leaching modelling 2811 Empirical models 2812...

Leaching of chalcopyrite concentrates with thiobacillus

Leaching of chalcopyrite concentrates with thiobacillus ferrooxidans in batch culture It can be seen from Table 4 that for the Avoca concentrate the apparent leach depths are constant for particles larger than 7 pm this corresponds to the linear region in Figure 3 detailed interpretation of batch leach curves is difficult The...

Thiosulfate

The raw material used in the batch reactor leaching experiments was the refractory pyritic and arsenopyritic concentrate that was subjected to pressure leaching at industrial scale and provided as such for thiosulfate leaching...

Batch Cyanidation Leach of Flotation Concentrate

The production of gold bullion from gravity or flotation concentrates is often an important economic consideration for an isolated gold mining operation It is assumed in this case that the coarse free gold has been recovered by the Mineral Jig in the grinding circuit and that the jig concentrate has been amalgamated This treatment produces a portion of...

Assessing a two

The test work was conducted using a batch sample of flotation concentrate derived from a mill-float-mill-float MF2 recovery process on Platreef ore as a proxy material Samples for the leaching tests size analysis mineral analysis and PGM and BM solid...

Batch Cyanidation of Flotation Concentrate

A batch procedure is desired because of the small quantity of total concentrate 5 to 6 tons produced daily and the greater flexibility and simplicity afforded by a batch type process The Gold Leaching Process Flowsheet...

Roasting and Leaching Bulk Copper

Roasting and Leaching Bulk Copper-Zinc Sulfide Concentrates with the Subsequent Recovery of the Metals by Electrolysis Carl Wesley Roasting and Leaching Bulk Copper-Zinc Sulfide Concentrates with the Subsequent Recovery of the Metals by Electrolysis 1934 batch system with hot dilute sulfuric acid and maximum extractions of...

Outotec Copper Chloride Leaching Process for Malanjkhand

OUTOTEC COPPER CHLORIDE LEACHING PROCESS FOR MALANJKHAND COPPER CONCENTRATE Marko Lampi Kari Valkama and Janne Karonen Outotec Finland Rauhalanpuisto 9 02230 Espoo Finland markolampi outotec Subhendra Nanda and Ramananda Adhikari Hindustan Copper Limited India Tamra Bahvan 1...

Pyrite Leaching Behaviour under CESL Process

Pyrite Leaching Behaviour under CESL Process Conditions H Salomon-De-Friedberg Teck Resources Limited 12380 Horseshoe Way Most of the sulphur in the concentrate in the CESL Process is not oxidized to sulphate but instead is Standard batch leach tests were performed in a 2 L titanium body Parr autoclave using 30 g/L...

A novel sequential heap leach process for treating

concentrate material which cannot feasibly be processed by a PGM smelter Additionally the coupled with leaching of the material in a batch recycle mode led to insufficient free cyanide to leach the Pt This situation was...

IMPROVEMENT OF SELECTIVE COPPER

Finally the leaching of the pre-heated concentrate resulted in a 9982 Cu extraction Consequently optimized process parameters were proposed by comparing the Cu extraction and the increased purity of the pregnant solution without Fe...

Recovery of elemental sulfur from zinc concentrate

Recovery of elemental sulfur from zinc concentrate direct leaching residue DLR using atmospheric distillation was systematically investigated on a pilot-scale system for the first time Batch operating mode was suggested for recovery of elemental sulfur from water-rich DLR using atmospheric distillation Elemental sulfur with purity higher than 99 was obtained...

Pressure Leaching of Copper Concentrates

Pressure Leaching of Copper Concentrates John O Marsden Senior Vice President 1999-2000 Batch testwork at Hazen Research Dawson and Phelps Dodge Process Technology Center Concentrate Leaching...

Silver recovery MINING

Silver recovery infomine eliminating the need to sell concentrate to a refinery Leaching of a high grade gold/silver ore with the CELP resulted in higher silver and gold extractions...

BIOLEACHING OF COPPER SULPHIDE FLOTATION

BIOLEACHING OF COPPER SULPHIDE FLOTATION CONCENTRATE IN BATCH REACTION SYSTEM USING MESOPHILE AND THERMOPHILE MICROORGANISMS BIO-LIXIVIACIÓN DE CONCENTRADO DE FLOTACIÓN DE The leaching of chalcopyrite is an acid consumption reaction Thus as the leaching reaction goes on a...

US7794677B2

The leaching step is typically performed in a batch operation where the molybdenite concentrate is exposed to the leaching solution in a leaching vessel After the leaching process the leaching solution is separated from the...

Process for purifying molybdenite concentrates

Feb 19 1985 0183 32 Process for purifying molybdenite concentrates upon completion of the chlorination resulting in the formation of a batch of brine suitable for leaching the molybdenite concentrate venting the reactor to a scrubber and adding a predetermined amount of the molybdenite concentrate to be leached thereafter sealing the reactor and...

CONTINUOUS BIOLOGICAL LEACHING OF COPPER

ABSTRACT Biological leaching of a chalcocite ore and its concentrate was studied in both batch and continuous tests in a 3 g/L chloride environment...

Optimization of bioleaching and oxidation of gold

Optimization of bioleaching and oxidation of gold-bearing pyrite-arsnopyrite ore concentrate in batch mode...

Relationship between bioleaching

However the remaining chalcopyrite in the supplementary batch test was only 21 of the initial concentrate vs 44 after continuous bioleaching showing a further dissolution of chalcopyrite during the batch period...

Experimental and Numerical Study of Multiphase

Batch Stirred Tank Applied to Ammoniacal Thiosulphate Leaching of Gold Dmitry Vladimirovich Gradov 1 Gerardo González 2 leaching of gold concentrate The studied milled concentrate has shear-thinning fluid rheology and it was imitated by water-based solutions of CMC Presence of electrolytes as in the case of the leaching...

Outotec atmospheric zinc concentrate direct leaching

Full-Text Paper PDF Outotec atmospheric zinc concentrate direct leaching process - Past present and future...

The Economics Of Removing Arsenic From Copper

The Economics Of Removing Arsenic From Copper Concentrates Using The Toowong Process L Leach Concentrate S Feed S L Process Water Solution Oxidation Treated Low Arsenic Concentrate To Smelter Oxygen Leach Recycle Testwork Stage Batch Pilot Batch Batch Batch...

LEACHING RECOVERY OF ZINC COBALT AND

LEACHING RECOVERY OF ZINC COBALT AND MANGANESE FROM ZINC PURIFICATION RESIDUE DF Haghshenas D Darvishi and Z Mos hefi Shabestari Department of Mining and Metallurgical Engineering Amirkabir University of Technology one or two step procedure using a batch or a...

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