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flotation process selectivity

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US5411148A - Selective flotation process for .

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The process comprises subjecting such material to a conditioning stage with at least one water-soluble sulphur-containing inorganic compound as a prerequisite step for further conditioning with nitrogen-containing organic chelating agents, preferably polyethylenepolyamines, prior to froth flotation wherein iron mineral, primarily pyrrhotite is depressed, thus allowing selective recovery of ...

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Flotation Process - an overview | ScienceDirect Topics

The process model developed here is inspired from these contributions and involves three phases, i.e. liquid (continuous phase), particles (dispersed solid phase) and bubbles (dispersed gas phase). It is an Eulerian model that takes into account several complex phenomena involved in the flotation process. The governing equations consist of mass ...

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Mineral Flotation - International Mining

"With Flotation Watch the stiffness of the flotation froth can be measured and this helps to keep the recovery in higher level. The signals for the production failures, such as hardening and collapse of the froth bed, can be seen beforehand and avoided. This way we can help to minimise the losses in the flotation process," says Hakola.

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Structural Modification of Xanthate Collectors To Enhance ...

Investigating the selectivity of a xanthate derivative for the flotation separation of chalcopyrite from pyrite. Chemical Engineering Science 2019, 205, 220-229. DOI: 10.1016/j.ces.2019.04.051. Yun Jia, Xiaoping Huang, Kaihua Huang, Shuai Wang, Zhanfang Cao, Hong Zhong.

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Method for improving selectivity and recovery in the ...

7/12/2016 · The invention claimed is: 1. A method for improving the selectivity and recovery of at least one or more valuable non-ferrous sulphide minerals associated with iron sulphides in a froth flotation process on non-ferrous metal sulphides, while reducing the use of environmentally problematic chemicals such as polyamines, by using the synergy of multiple depressants, the method comprising: i ...

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Process for increasing the selectivity of mineral flotation

Process for increasing the selectivity of mineral flotation Apr 22, 1987 - Falconbridge Limited An aqueous solution containing a water soluble polyvalent metal sulphate, an alkali metal silicate and an alkali metal metabisulphite is described which is added to a slurry of a copper mineral bearing ore to be subjected to a froth flotation step ...

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Process for increasing the selectivity of mineral flotation

4/5/1988 · Process for increasing the selectivity of mineral flotation . United States Patent 4735783 . Abstract: An aqueous solution containing a water soluble polyvalent metal sulphate, an alkali metal silicate and an alkali metal metabisulphite is described which is added to a slurry of a copper mineral bearing ore to be subjected to a froth flotation ...

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Flotation Depressants | ArrMaz

ArrMaz's flotation depressants have been custom developed for a variety of applications. They help depress gangue minerals while increasing recovery and selectivity without sacing grade. Our depressants have been especially effective in phosphate, silica / glass sand and iron beneficiation.

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The effect of mode of occurrence of galena and sphalerite ...

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flotation selectivity between galena and sphalerite. As expected, the flotation selectivity was improved by the addition of sodium cyanide. As stated above, increasing the cyanide dosage above 100 g/t NaCN gave no further improvement in flotation selectivity. The effect of mode of occurrence of galena and sphalerite on the selective flotation T ...

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(PDF) A Review of the Flotation of Copper Minerals

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control parameters of flotation process in the plant for naturally or weakly floatable sulphide minerals. iii. In order to enhance the selectivity of collection, ma ny modifying agents like ...

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US4968415A - Process for selective flotation of phosphorus ...

A process for selective flotation of phosphate minerals, wherein a compound of the formula 1a or 1b ##STR1## in which R 1 is branched or unbranched C 8 -C 24 -alkenyl, R 2 is branched or unbranched C 1 -C 4 -alkyl and M is hydrogen, ammonium, triethanolammonium, an alkali metal atom or an alkaline earth metal atom, is added as a collecting agent to the flotation suspension.

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Flotation Solutions - Maximising Mineral Recovery | Nalco ...

Our range of flotation solutions include frother and collector programs for coal, copper, molybdenum, phosphate, potash, and more. All of our solutions address your process holistically, helping you optimise your flotation circuit to achieve greater selectivity, recovery, grade, and ultimately, cost performance.

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(PDF) A Review of the Flotation of Copper Minerals

control parameters of flotation process in the plant for naturally or weakly floatable sulphide minerals. iii. In order to enhance the selectivity of collection, ma ny modifying agents like ...

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1 Froth Flotation – Fundamental Principles

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flotation rate, particle size recovery, air flow, pulp density, etc.) As a result, it is difficult to study the effects of any single factor in isolation, and compensation effects within the system can keep process changes from producing the expected effects (Klimpel, 1995). This makes it

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Estimation of selectivity index and separation efficiency ...

AbstractArtificial neural network was used to predict the copper ore flotation indices of Separation Efficiency (SE) and Selectivity Index (SI) within different operational conditions. The aim was to predict SECu and SIFe and SIMo as a function of chemical reagent dosages (collector, frother, modifier), feed rate, solid percentage, and the feed grade of Cu, Fe, and Mo.

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Flotation Solutions - Maximising Mineral Recovery | Nalco ...

Our range of flotation solutions include frother and collector programs for coal, copper, molybdenum, phosphate, potash, and more. All of our solutions address your process holistically, helping you optimise your flotation circuit to achieve greater selectivity, recovery, grade, and ultimately, cost performance.

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The effect of mode of occurrence of galena and sphalerite ...

 · Fișier PDF

flotation selectivity between galena and sphalerite. As expected, the flotation selectivity was improved by the addition of sodium cyanide. As stated above, increasing the cyanide dosage above 100 g/t NaCN gave no further improvement in flotation selectivity. The effect of mode of occurrence of galena and sphalerite on the selective flotation T ...

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Estimation of selectivity index and separation .

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(2017). Estimation of selectivity index and separation efficiency of copper flotation process using ANN model. Geosystem Engineering: Vol. 20, No. 1, pp. 41-50.

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DEINKING SELECTIVITY (Z-FACTOR): A NEW PARAMETER TO ...

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evaluate flotation deinking performance. That is, the flotation process has to be optimized in terms of both high ink removal rate and fiber yield. The objective of our study was to define a deinking selectivity concept that takes into consideration both ink removal and fiber loss process for balanced evaluation of industrial deinking processes.

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flotation column a process unit for cleaning up Limestone

Flotation Process - an overview ScienceDirect Topics. Wet Cleaning Process by Major Unit Operations. Dilip Kumar, Deepak Kumar, in Sustainable Management of Coal Preparation, 2018. 5.4.6 Flotation Equipment. The basic objective of a flotation device is to keep the pulp in suspension and provide the air bubbles. The size of air bubbles matters ...

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Copper-Lead-Zinc ores

Which flotation scheme used in the differential copper-lead bulk concentrate separation is generally and often dependent upon which mineral has the greater mass in the bulk concentrate. Whichever mineral constitutes the lower bulk concentrate mass will be floated away from the other mineral which is depressed for flotation selectivity reasons.

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