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pulp density of copper ores

Pulp Density - an overview ScienceDirect Topics

In yet another bioleaching of the above copper smelter slag using an enrichment culture containing A. ferrooxidans, A. thiooxidans, A. caldus, Leptospirillum ferrooxidans, and Sulfobacillus thermotolerans in a continuous stirred tank reactor for 29 days at 5% pulp density, 41% Fe, 62% Cu, 35% Zn, and 44% Ni could be solubilized. Using an ...

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Extraction of copper from complex carbonaceous sulfide

An increase in pulp density resulted in a significant decline in copper extraction. EPMA analysis of the solid residue obtained from leaching a sample of 300 g/L pulp density in 2.0 mol/L H 2 SO 4, showed unreacted chalcopyrite embedded/locked in the quartz phase. This indicates that a high pulp density significantly increases the viscosity of ...

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Flotation of Copper Ores - 911 Metallurgist

2016-2-11  Flotation of Copper Ores. Flotation of Copper Ores. Post navigation. Previous. Next. ... The density of the pulp may vary from 2½ :1 on a sandy feed up to 7 : 1 on a strictly slime-feed. The particular density is not a matter of so much importance as that the supply of pulp shall be uniform as to its density

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Arsenic removal from copper ores and concentrates

2009-9-1  Pulp density and NaHS additions were kept constant at 500 g/L and 100 g/L respectively with NaOH addition at 100 g/L. At this pulp density and NaHS addition, the ratio of sulfur to arsenic (S/As = mol/mol) is 12.3 and that of sulfur to copper (S/Cu = mol/mol) is 4.5. At 30 °C, the arsenic dissolution reached only 10% after 3 h.

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(PDF) The Critical Role of Pulp Density on Flotation ...

2018-7-26  The effect of pulp density was À0,09 for a variation of 5%; This observation (also shown in Fig. 2a) indicates that reducing the pulp density lead to an increase in the copper grade in the ...

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Optimization of parameters affecting recovery of copper ...

2021-10-17  The highest copper recovery was equivalent to 69.91%, obtained after 21 days at 35 degrees using the Acidi Thiobacillus Ferrooxidans bacteria and a K9 medium with a pulp density of 10% and pH 1.5. Keywords: Optimization, Copper, Bioleaching, Bacteria, Acidi Thiobacillus Ferrooxidans. 1. Introduction World reserves of high-grade ores are declining

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Bioleaching of low-grade copper sulfide ores by ...

2014-2-21  The bioleaching rates reach their highest point in sulfide copper and chalcopyrite with a pulp density of 5% and 10%, respectively. Column flotation experiments of low-grade copper sulfide ores show that the bioleaching recovery reaches nearly 45% after 75 days.

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Treatment of secondary copper sulphides (chalcocite and ...

2002-10-1  The copper extraction from ores (with 1–2% Cu) at 70 °C ranged from 77% to 98% depending on the pulp density and the size fraction of the ore. Since the ferric iron demand was very low for ores, the solid recycle could be omitted in the BRISA process and it would be possible to operate directly at high pulp densities, which represent both a ...

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Development of Copper Recovery Processes from s and

2020-2-20  5.3.2.4 Effect of pulp density-----135 5.3.2.5 Effect of free acidity----- ... –grade copper ores and mine tailings, the conventional copper producing process and the previous research on the low–grade copper ore resources. Fundamental technologies for the recovery of copper from ores

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Impact of Pulp Density on Extraction of Metals, By ...

2018-8-8  Pulp density of the mineral ore is the appropriate concentration required for completion of the reaction. At specific pulp density, there is the maximum output of the extracted metals was found. In the present investigation, various pulp densities of the bauxite ore have been tried for the extraction of aluminum and iron.

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Flotation of Copper Ores - 911 Metallurgist

2016-2-11  Flotation of Copper Ores. Flotation of Copper Ores. Post navigation. Previous. Next. ... The density of the pulp may vary from 2½ :1 on a sandy feed up to 7 : 1 on a strictly slime-feed. The particular density is not a matter of so much importance as that the supply of pulp shall be uniform as to its density

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Bioleaching of low ­grade copper sulfide ores by and

oxygen supply, pulp density and residence time affect the extraction of copper and the best condition needs to be determined before bioleaching [10 −12] .

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Development of Copper Recovery Processes from s and

2020-2-20  5.3.2.4 Effect of pulp density-----135 5.3.2.5 Effect of free acidity----- ... –grade copper ores and mine tailings, the conventional copper producing process and the previous research on the low–grade copper ore resources. Fundamental technologies for the recovery of copper from ores

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The Critical Role of Pulp Density on Flotation Separation ...

pulp density, played a key role in flotation performance. The decline in density (from 40 wt % to 20 wt %) increased the nickel and copper recoveries from 70.7% to 79.5% and 82% to 85.4% respectively

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Common Basic Formulas for Mineral Processing

2016-3-20  Pulp Densities. Pulp densities indicate by means of a tabulation the percentages of solids (or liquid-to-solid ratio) in a sample of pulp. This figure is valuable in two ways—directly, because for each unit process and operation in milling the optimum pulp density must be established and maintained, and indirectly, because certain important tonnage calculations are based on pulp density.

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Bioleaching of copper from chalcopyrite ore by fungi

2016-7-20  The dependency of copper leaching rate on initial pulp density is very important in case of bioleaching20,2l. Figure 1 reveals that all the five isolates showed high percent of leaching at low pulp densities (0.5-2.0%). The strain Aflavus (DSF-8) was comparatively more efficient. The intensity of mineral oxidation depends

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Impact of Pulp Density on Extraction of Metals, By ...

Pulp density of the mineral ore is the appropriate concentration required for completion of the reaction. At specific pulp density, there is the maximum output of the extracted metals was found. In the present investigation, various pulp densities of the bauxite ore have been tried for the extraction of

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Silver-catalyzed bioleaching of low-grade copper ores ...

2008-9-26  A study of the effect of different variables (inoculation, pulp density, [Ag], nutrient medium, pH and [Fe3+]) on the silver-catalyzed bioleaching of a low-grade copper sulfide ore has been carried out in shake flasks. Chalcopyrite was the dominant copper mineral in the ore.

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FLOTATION OF COPPER ORES - WESTON D,CA

What I claim as my invention is 1. A process for the flotation recovery of copper values from ores containing copper values in the form of at least one sulphide copper mineral and at least one sulphuric acid soluble copper mineral using a sulfhydryl anionic collector comprising: subjecting a pulp of the ore to acid treatment by conditioning the pulp with addition of an acid agent, the acid ...

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Pulp density - SlideShare

2014-5-14  Pulp density 1. Conventional and electrochemical bioleaching of chalcopyrite concentrates by moderately thermophilic bacteria at high pulp density Ali Ahmadi a,b , Mahin Schaffie c , Jochen Petersen d , Axel Schippers e , Mohammad Ranjbar a,b, ⁎

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COPPER ORE

2011-10-19  Generally the run-of-mine copper ores contain low level of copper and for economic ... 66% pulp density and floated after conditioning with flotation reagents, at a pulp density of 20%. To avoid dilution of reagents concentration, reagentised water was added to make up water level in flotation cell

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Bioleaching of copper from chalcopyrite ore by fungi

2016-7-20  The dependency of copper leaching rate on initial pulp density is very important in case of bioleaching20,2l. Figure 1 reveals that all the five isolates showed high percent of leaching at low pulp densities (0.5-2.0%). The strain Aflavus (DSF-8) was comparatively more efficient. The intensity of mineral oxidation depends

More

Impact of Pulp Density on Extraction of Metals, By ...

Pulp density of the mineral ore is the appropriate concentration required for completion of the reaction. At specific pulp density, there is the maximum output of the extracted metals was found. In the present investigation, various pulp densities of the bauxite ore have been tried for the extraction of

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Role of ore mineralogy in optimizing conditions for ...

2017-3-1  lead and copper recoveries. The influencing parameters investigated include particle size, stirring speed, volume of inoculum, pulp density, and pH. The results show that the mixed mesophilic cultures can extract about two and a half times the amount of zinc than copper over an

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Selective removal of cobalt and copper from Fe (III ...

As a result, 87.91% of cobalt and 58.52% of copper were extracted at initial pH 1.4 and pulp density of 50 g/L by hybrid bioleaching. The hazardous potential assessments revealed that the bioleached residue could be disposed safely.

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Silver-catalyzed bioleaching of low-grade copper ores ...

2008-9-26  A study of the effect of different variables (inoculation, pulp density, [Ag], nutrient medium, pH and [Fe3+]) on the silver-catalyzed bioleaching of a low-grade copper sulfide ore has been carried out in shake flasks. Chalcopyrite was the dominant copper mineral in the ore.

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Bio-dissolution of copper from Khetri lagoon material by ...

2008-6-18  an adapted strain of Acidithiobacillus ferrooxidans with various parameters such as presence/absence of iron, pH, pulp density and temperature. Base of the medium was 9 K (without ferrous) Bio-dissolution of copper was found to be maximum, i.e., 80.9% with 9 K+ (with ferrous) at pH-2.0, 10% pulp-density and 35oC within an incubation period of ...

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Copper Mining - H2SO4 Measurement: SensoTech GmbH

Thereby, crushed copper sulfide ores are enriched with water and a foaming agent, to skim quartz or silicates. The obtained copper concentrate has a copper content of 20 - 40 wt%. In the pyrometallurgical extraction, SO 2 is generated which is oxidized with atmospheric oxygen to form sulfur trioxide SO 3 (contact process).

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A FUNDAMENTAL EVALUATION OF THE ATMOSPHERIC

2017-12-16  Nickel-Copper sulphide ores are the most important Platinum Group Metal bearing ores. The South African deposits are exceptionally rich in the platinum group metals (PGMs) and production of the PGMs is the primary purpose of treating these ... pulp density, but decreased with an increase in particle size, acid and copper iii. concentrations ...

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Pulp density - SlideShare

2014-5-14  Pulp density 1. Conventional and electrochemical bioleaching of chalcopyrite concentrates by moderately thermophilic bacteria at high pulp density Ali Ahmadi a,b , Mahin Schaffie c , Jochen Petersen d , Axel Schippers e , Mohammad Ranjbar a,b, ⁎

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