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lime requirement for copper flotation

Lime in Flotation and Recovery Processes Graymont

Lime in Flotation and Recovery Processes Both quicklime and hydrated lime are widely used in the flotation or recovery of non-ferrous metals, including copper, zinc, nickel and lead-bearing ores. Ores, either run-of-mine, milled, autoclaved or roasted, are combined with lime and a cyanide solution.

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lime requirement for copper flotation-XinHai Mineral

lime requirement for copper flotation Energy Efficiency amp Copper Hydrometallurgy low copper content expressed as kJ/ton ore Upstream operations including mining, crushing, grinding, flotation, heap leaching, etc. Energy consumption for material streams with high copper content expressed as kJ/lb contained copper Downstream operations

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Optimization of a Copper/Molybdenum Flotation Circuit by

specific use of lime, in rougher flotation was conducted. Specifically, the goal was to determine an effective alternative to pH adjustment using lime. Experiments were conducted using the most common selection of reagents: xanthate and lime to recover copper and reject iron to establish a base test to compare other reagent schemes with.

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Lime use and functionality in sulphide mineral flotation

Nov 01, 2019· Lime in flotation, as a pH modifier, can also regulate not only collector adsorption, but also the effect of other commonly-used depressants such as sodium sulphide or sodium cyanide (Yoon, 1981, Ghiani et al., 1984, Wang and Forssberg, 1996). Cyanide acts by dissolving copper from the surface of the activated sulphides, thus preventing

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LIME CONTROL METHOD FOR HIGHLY ALKALINE FLOTATION

In carrying out the invention, a flotation pulp of a sulfide ore, such as an ore containing copper sulfide minerals as the desired values, is brought to the desired degree of alkalinity by appropriate additions of lime and is then tested for electrical conductivity in order to determine a conductivity norm against which measured values of

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pH/ORP measurement Copper flotation process

Copper processing example A high pH is important in copper ore processing to maximize this mineral’s flotation properties. Most copper ore slurries tend to be acidic. Plants typically add lime to the slurry in the mill or floatation circuit, increasing its alkalinity. A typical copper operation contains many flotation cells,

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Copper Flotation Elmhurst University

The copper minerals and waste rock are separated at the mill using froth flotation. The copper ore slurry from the grinding mills is mixed with milk of lime (simply water and ground-up limestone) to give a basic pH, pine oil (yes, it comes from trees -- a by-product of paper mills) to make bubbles, an alcohol to strengthen the bubbles, and a

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Optimization of a Copper/Molybdenum Flotation Circuit by

specific use of lime, in rougher flotation was conducted. Specifically, the goal was to determine an effective alternative to pH adjustment using lime. Experiments were conducted using the most common selection of reagents: xanthate and lime to recover copper and reject iron to establish a base test to compare other reagent schemes with.

More

pH/ORP measurement Copper flotation process

Copper processing example A high pH is important in copper ore processing to maximize this mineral’s flotation properties. Most copper ore slurries tend to be acidic. Plants typically add lime to the slurry in the mill or floatation circuit, increasing its alkalinity. A typical copper operation contains many flotation cells,

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Copper Flotation Elmhurst University

The copper minerals and waste rock are separated at the mill using froth flotation. The copper ore slurry from the grinding mills is mixed with milk of lime (simply water and ground-up limestone) to give a basic pH, pine oil (yes, it comes from trees -- a by-product of paper mills) to make bubbles, an alcohol to strengthen the bubbles, and a

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lime usage for copper mining-XinHai Mineral Processing

Nov 01, 2019018332At Silver Queen mine (Canada) a combined limestarchSO 2 conditioning scheme is used for copper flotation from the Pb/Zn sulphides (Bulatovic, 2007b). In the process, lime (1200 g/t) and starch (200 g/t) are used first, at pH 10.511.2, after which the pH is reduced to 5.5 with SO 2 (200 g/t) and the copper sulphide floated. Contact

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Lime use and functionality in sulphide mineral flotation

It is common that in the copper industry lime is used as the sole depressant for pyrite, primarily when flotation is carried out in freshwater [11, 12]. Interestingly, the use of seawater is a

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Modeling and Control of Lime Addition in a Flotation

Flotation is an important and versatile mineral processing technique that is used to separate hydrophobic materials from hydrophilic. This technique makes it pos-sible to mine complex ores that otherwise would have been regarded as uneco-nomic and non-beneficial. In this case flotation is used to separate copper from the unwanted gangue.

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Improve Copper Production by Controlling PH in Flotation

Xinhai flotation processing increases product rate, reduces reagent consumption and labor requirements.. Rich copper concentrate is produced from crude copper sulfide ore by means of a flotation procedure that takes benefit from the physical and chemical properties of small copper

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(PDF) A Review of the Flotation of Copper Minerals

S. Bulatovic, "Flot ation of Oxide Copper an d Copper Cobalt Ores," in Handbook of Flotation R eagents: Chemistry, Theory and Practice Volum e 2, Elsevier Science a nd Technology Books,

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Differential flotation ofcopper-zincat PrieskaCopper Mines

the copper:zincratio inthe feed, the greater the zinc rejection andefficiency demands. Besides the economic inducement ofahigh copper recovery perse,ahigh copper extraction isimperative toensure that thezincconcentrate doesnotexceed the specified copper content, sincetestwork hasshown t~at afraction ofthecopper remaining inthecopper flotatIOn

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1 Froth Flotation Fundamental Principles

Table 1: Grade/recovery performance of a hypothetical copper ore flotation process. Product % Weight % Cu Assay Feed 100 2.09 Concentrate 10 20.0 Tailings 90 0.1 (a) From Table 1, the Ratio of Concentration can be calculated as F/C = 100/10 = 10. If only assays are available, the ratio of concentration equals (20 0.1)/(2.09 0.1) = 10

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What Ph Is Commonly Used In Copper Ore Flotation

What Ph Is Commonly Used In Copper Ore Flotation. use of lime copper flotation ewags.org. what ph is commonly used in copper ore flotation. Copper ore may be separated from crude ore using a flotation pro cess that the copper yield, pH control is necessary in the flotation tanks Plants typically add lime to the The InDip 508 Immersion Housing is recommended for use with.

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The role of sodium sulfide in the flotation of pyrite

Apr 01, 2018· Fig. 1 shows the recoveries of chalcopyrite and pyrite as a function of flotation time in copper flotation. Lime was used to increase pH to 9.5 in flotation to depress pyrite. It can be seen that chalcopyrite was selectively floated from pyrite with about 90% chalcopyrite recovery and

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Reduction of pH modifying agent in the flotation of copper

Additionally, lime by itself, or in conjunction with a sulfoxy reagent, acts to depress certain minerals. For example in complex copper/lead/zinc ores, lime with or without sulfoxy reagents acts to depress sphalerite, pyrite and pyrrhotite. A typical flow chart for a conventional flotation process using lime for pH adjustment is shown in FIG. 1.

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Pyrite depression by dextrin in flotation with xanthates

amount of lime that it would be required (Castro, 2012). Dextrins are commercially used for depression of carbonaceous pyrite in copper flotation, depression of lead in lead-copper bulk separation (Bulatovic, 2007) and depression of hematite and apatite in their reverse flotation against siliceous minerals (Lin and Burdick, 1988).

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