ph modifiers for tetrahedrite flotation

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pH Ranges for Sequential Cu Pb Zn Flotation | Separation

Mar 17, 2017 ... Given a baseline amount of frother and collector, these curves are the approximate/relative rate of flotation recovery of Copper (Chalcopyrite/Bornite/Chalcocite/Covellite/Tennantite/Enargite/Tetrahedrite /Freibergite ), Lead (Galena) and Zinc (Sphalerite) as well as iron (pyrite/arsenopyrite) minerals VS pH.

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Study of Flotation Parameters for Copper Recovery from Tennantite ...

showed that tennantite and tetrahedrite do not respond well to flotation using xanthate as a collector. Tetrahedrite floats well with aerophine and mercaptan type of collectors at a pH value between 8 and 10 [11]. Selective separation of sulphide minerals can be achieved using a variety of collectors and modifiers to adjust...

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Beneficiation of arsenic bearing complex sulphide ore by flotation

drite do not respond well to flotation using xanthate as a collector. Tetrahedrite floats well with aerophine and mercaptan type of collectors at a pH value between 8 and 10. (Bulatovic, 2007). Selective separation of sulphide minerals can be achieved using a variety of collec- tors and modifiers to adjust surface properties...

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pH Modifiers | ArrMaz

pH MODIFIERS. Mineral conditioning and pH control can greatly affect flotation performance. Most mineral beneficiation processes require some type of pH adjustment to impart ideal separation conditions. As mineral feed quality continues to decrease, more sophisticated pH modifiers are needed to achieve optimum...

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Silver ores - Danafloat

The most common silver-bearing minerals recovered by flotation are argentiferous galena, native silver, argentite (Ag2S) and tetrahedrite (Cu,Fe,Ag) Sb4S3). Often these minerals float with the base metals ... to depress silver minerals in flotation. Use of soda ash for elevating pH is suggested as an alternative pH modifier.

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The Effect of Sodium Silicate as pH Modifier and Depressant in the ...

Jun 25, 2010 ... The Effect of Sodium Silicate as pH Modifier and Depressant in the Froth Flotation of Molybdenite Ores. Chul-Hyun Park and Ho-Seok Jeon*. Korea Institute of Geoscience and Mineral Resources, Daejeon 305-350, Korea. In flotation of porphyry molybdenite ores or copper-molybdenite ores using oil...

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Download PDF script with sketches and tables

3.4 Column flotation. 9. 3.5 Hydrometallurgy. 10. 4. Microscopy of base metal ores and milling products. 10. 4.1 Specific tasks of microscopical investigations. 11 ...... Frother. REGULATORS (modifiers). Lime. pH - increase, depressor for pyrite. Caustic soda. pH - increase, disperses gangue. Sulphuric acid. pH - decrease.

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School of Chemical Technology Degree ... - Semantic Scholar

Jan 30, 2015 ... which allowed gathering sufficient data from a total of 20 batch flotation experiments for copper rougher flotation where pH, collector and depressant dosages were varied to provoke changes in the responses of copper recovery and ...... In the presence of pH modifiers and depressants, the frother is able to.

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recovery of copper from oxide copper ore by flotation and ... - METU

Dec 2, 2014 ... dosage of collectors, pH, and dosage of activator Na2S were examined. Results of flotation tests were unsuccessful in terms of both recovery and grade of concentrate product. The highest copper ...... butyl carbinol (MIBC) was used as frother, and ammonium sulphate ((NH4)2SO4) was used as modifier.

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EP2506979A2 - Separation of cooper minerals from pyrite using air ...

The employment of flotation to upgrade valuable minerals from pyrite and other gangue minerals is generally performed at an alkaline pH. Alkalinity is ... US Patents 6,032,805, and 6,092,666 to Clark, et al, disclose a method for reducing the consumption of alkaline pH modifiers by using a sulfoxy radical-containing reagent.

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The critical importance of pulp concentration on the flotation of ...

The critical importance of pulp concentration on the flotation of galena from a low grade lead–zinc ore ... The test data show that, for comparable collector, grinding time, flotation pH and solid-in-pulp concentration, the increase of solid-in-pulp concentration has the most ... Tetrahedrite, 0.30, Sericite, 1.00, Hematite, Trace...

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Yongjun Peng | The University of Queensland, Brisbane | UQ ...

The objective of this study was to assess the effect of lime and soda ash as pH modifiers on the flotation of a copper-gold ore mixed with kaolinite at different concentrations. For the flotation experiments air flow rate, impeller speed, flotation time and other flotation reagents were kept constant, and the flotation outcomes were...

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Laboratory evaluation of the flotation response of a copper cobalt ...

Froth flotation remains to date as one of the most used metallurgical processes for concentrating metal-bearing minerals in ores. Oxide ores are relatively less amenable to froth flotation and require a judicious choice of reagents for the recovery of metals to be optimised. Laboratory batch flotation tests were conducted to...

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Progress in mineral processing technology of copper mine 2017 ...

Jan 11, 2017 ... Industrial value in the world's copper output, 80% copper minerals are mostly sulfide, chalcocite, other chalcopyrite, bornite, tetrahedrite and azurite, ... flotation regrinding rough concentrate separation, difficult separation of copper and sulfur, need to add a lot of lime, high pH medium not only caused the...

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Development Document for Ore Mining & Dressing Category ... - EPA

In copper Flotation water usage in Froth Flotation of Copper. 227. Raw Mill Waste Loads Prior to Settling in Tailing 228. Ponds waste water Constituents and waste ...... complex system of reagents is generally used, including five basic types of compounds: pH conditioners (regulators, modifiers), collectors, frothers, activators.

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applications of mineral characterisation and process research to the ...

outlined below. Flotation. Mineralogical analysis is extensively applied in flotation research, in metallurgical testing for flowsheet development and in the analysis of flotation circuit performance. .... was contained in two minerals, i.e. tetrahedrite ((Cu.Fe).„Sb,S._) ... flotation with diphenyl guanidine as the collector at pH=12.4.

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Copper Recovery from Barren Cyanide Solution by Using ...

Apr 29, 2013 ... commonly associated with chalcopyrite, tetrahedrite, tennantite, enargite ... function of pH. Hydrogen cyanide (HCN), also known as hydrocyanic acid, is a colorless gas or liquid with a boiling point of. 25.7˚C, a vapor pressure of 100 kPa at 26˚C and Henry's .... lowed by coagulation and flotation. Formation...

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NI43-101 Technical Report - Bear Creek Mining Corporation

Oct 26, 2017 ... Sequential Flotation Tests. 91. 13.5. Effect of Particle Size. 91. 13.5.1. Effect of Departments. 92. 13.5.2. Collectors. 94. 13.5.3. Activators. 95. 13.5.4. pH Regulators. 95. 13.5.5. Surface Modifiers. 95. 13.5.6. Rougher Concentrate Regrind. 96. 13.5.7. Summary of Sequential Locked-Cycle Test Results. 96.

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