flotation of ni sulphides

NICKEL AND COBALT ORES: FLOTATION

Mackinawite (Fe,Ni)9S8 Up to 9 Arsenopyrite FeAsS Up to 0.5 Secondary Pyrite FeS2 Up to 12 Marcasite FeS2 Up to 6 Smythite Fe3.25S4 Up to 5 Tochilinite 6Fe0.9S.5(Mg,Fe)(OH)2 Up to 5 Magnetite Fe3O4 Up to 1 (Reprintedwith permissionfrom The Minerals, Metals and Mater-ials Society (TMS).) Table 2 Distribution of Ni and S in sulfide ores

Leaching and the Residue Flotation of a Low-Grade Ni-Cu ...

According to the mineralogy of a low-grade Ni-Cu-PGM sulfide ore, a leaching-flotation process was introduced to process the ore. The leaching tests were focused on temperature, acid concentration, and grinding fineness under normal pressure. Results show that most of Mg and Fe can be effectively leached by 25% H2SO4 with a small amount of copper and nickel loss in …

Danafloat

Some plants use bulk flotation in an acid pH environment which is achieved using SO2 or H2SO4. Separation of the bulk concentrate copper and nickel minerals is generally accomplished by flotation of the copper from pentlandite and nickel …

KR20150067088A - A method for improving selectivity and ...

Discuss; 238000011084 recovery Methods 0.000 title claims abstract 3; 238000005188 flotation Methods 0.000 title abstract description 28; WWNBZGLDODTKEM-UHFFFAOYSA-N …

Collectorless Flotation of Sulphide Minerals: Mineral ...

Collectorless flotation is reviewed from the viewpoint of classical oxidation studies through to modern electrochemical, surface chemical and spectroscopic investigations coupled with flotation studies. Sulphide minerals apparently oxidize through a continuum of metal deficient sulphides of decreasing metal content through to elemental sulphur.

Flotation of Nickel-Copper Sulphide Ore: Optimisation of ...

the flotation recovery of Ni, Cu and Co from a nickel-copper sulphide ore. The effect on flotation performance of various parameters such as pH, collector dosage, % solids and depressant dosage at different levels was investigated. Therefore, the main objective of the study was to optimize the process parameters for the flotation of base metals ...

US4460459A - Sequential flotation of sulfide ores - Google ...

A sequential flotation process for the recovery of high-grade concentrates of copper, lead and cobalt-nickel from sulfide ores is provided. A primary grind ore pulp is conditioned with SO 2 as H 2 SO 3 under intense aeration, and the conditioned pulp subjected to sequential flotation, with regrinding and conditioning of a copper rougher concentrate obtained in the first flotation step …

US20150021236A1 - Mineral Ore Flotation Using ...

A flotation method for mineral processing is disclosed. The method for floating includes a first step of using a first carboxymethyl cellulose (CMC) in a first flotation cell, and a subsequent step includes using a second CMC in a subsequent flotation cell, the first and second CMCs having different characteristics. The first flotation cell may be used in at least one rougher stage …

New perceptions into the detrimental influences of ...

The flotation separation between sulfides and fine serpentine has always been a difficult problem due to their hetero-coagulation. To acquire a better understanding on the adverse effect of fine serpentine on Cu-Ni sulfide flotation, rheology measurements and flotation tests on Cu-Ni sulfide/serpentine system were explored under different conditions in this study.

Copper Nickel Flotation

The Bureau of Mines investigated the flotation responses of two copper nickel ore samples from the Duluth Complex with the objective of recovering bulk sulfide concentrates. One of the ores studied was taken from a test pit; the other was taken from a test shaft. The samples were quite similar except that the pit sample analyzed 0.35 pct Cu and 0.11 pct Ni and the …

US3596838A - Flotation of sulphide ores - Google Patents

Flotation of sulphide minerals from their ores is achieved by a process in which two or more conditioning steps are carried out prior to a froth flotation step. The first step comprises conditioning a pulp of the ore in the presence of at least one alkaline agent selected from a group of agents which is defined in the specification which follows.

Selective depression of millerite (β-NiS) by ...

The flotation lasted for 5 min, and ultra-high purity nitrogen (99.998%, Praxair Inc.) was used to generate bubbles. The nitrogen flow rate was set at 30 standard cubic centimetres per minute (sccm), and the superficial gas velocity was 1.1 × 10 −3 m/s with a cross-sectional area of the flotation cell of 4.5 × 10 −4 m 2.

Impact of oxidation on flotation of Ni–Cu sulphide ore ...

Impact of oxidation on the flotation of a complex Ni–Cu sulphide has been investigated using two approaches. In the first approach, the samples to be floated were allowed to oxidise before ...

Extraction of Nickel and Cobalt from Sulfide Ores ...

The conventional smelting and refining of Ni sulfide concentrates is an effective strategy for extracting Ni from sulfide ores. ... sulfide flotation copper concentrate with oxygenated sulphuric ...

A review of the physicochemical properties and flotation ...

A review of the physicochemical properties and flotation of pyrrhotite superstructures (4C – Fe 7 S 8 / 5C – Fe 9 S 10) in Ni‐Cu sulphide mineral processing Ravinder S. Multani. Department of Mining and Materials Engineering, McGill University, 3610 …

Handbook of Flotation Reagents

Handbook of Flotation Reagents Chemistry, Theory and Practice: Flotation of Sulfide Ores by Srdjan M. Bulatovic • ISBN: 0444530290 • Publisher: Elsevier Science & Technology Books • Pub. Date: April 2007

Impact of oxidation on flotation of Ni–Cu sulphide ore ...

Abstract. Impact of oxidation on the flotation of a complex Ni–Cu sulphide has been investigated using two approaches. In the first approach, the samples to be floated were allowed to oxidise before grinding while in the second …

Acid leaching of oxide–sulfide copper ore prior the ...

453 Acid leaching of oxide–sulfide copper ore prior the flotation – A way for an increased metal recovery Miroslav D. Sokić1, Vladan D. Milošević1, Velizar D. Stanković2, Vladislav Lj.Matković1, Branislav R. Marković1 1Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade, Serbia 2University of Belgrade, Technical Faculty, Bor, Serbia

Selective flotation process for separation of sulphide ...

As may be seen from these two tables, the flotation selectivity achieved using DETA is comparable to that of the blank test. The Po/Pn ratio of the concentrates (17 to 20) and the tailing grades (1.3 to 1.4% Ni/NBS) are high, indicating that the efficiency of pentlandite-pyrrhotite separation is poor regardless of the DETA usage.

Oxidation of Complex Ni-Cu Sulphide Ores and its ...

Oxidation of complex nickel-copper sulphides is a serious concern in their flotation. This paper addresses this issue through a study of batch tests using stockpile samples and fresh samples oxidized in the lab.

Optimisation of Reagent Addition during Flotation of a ...

addition on flotation performance of a nickel sulphide ore. The objectives of the study were to: 1. develop an understanding of the effects of collector and depressant dosage, and its interactive effects, on flotation performance and 2. determine the effect of stage dosing collector and depressant on flotation performance.

BALMORAL REPORTS POSITIVE METALLURGICAL RESULTS …

OF H3 NI-SULPHIDE ZONE AT GRASSET, QUEBEC Locked Cycle Flotation Tests Produce Nickel Recoveries of 86.0 to 87.3%, Copper Recoveries of 93.5-94.4% and Palladium Recovery of 89% Initial Concentrate Grades of 13.4-13.8% Ni, 1.79-1.97% Cu and 10.15 to 10.61 g/t 3E (Au+Pt+Pd) Reported

Sulphide Gold Ore Treatment by Leaching and Flotation …

A Flowsheet to recovery gold from sulfide ores. There are many arrangements and combinations using flotation in conjunction with treatment of gold ores. The two gold process flowsheets shown, with some variations, are probably the most commonly used. In Gold Flowsheet No. 1 the ore is ground in water to such a size as to free the minerals ...

Effect of pH on the Recovery and Grade of Base Metal ...

flotation of base metal sulphides mainly focused on reagent optimization to achieve optimum recovery and grade [2]. In this study the effect of pH and its balance with reagent dosages is examined with the intention of improving flotation performance. The …

Froth Flotation (Sulphide & Oxide) - 911metallurgist.com

I want to perform Ni sulfide flotation in a 1 L laboratory cell. But after adding the reagents, starting the reaction and collecting the concentrate the pH of the pulp decreases. So we have to add soda ash further to adjust the pH again to 10.1 which is …

(PDF) Flotation of Nickel-Copper Sulphide Ore ...

In this study, the robust Taguchi experimental design method was used to determine the optimum conditions for the flotation of nickel, copper and cobalt from a nickel-copper sulphide ore. The...

Copper Sulfide Flotation - Mineral Processing & Metallurgy

Flowsheet for treatment of Copper Sulfide ores rich inminerals such as chalcopyrite with gold and silver as well as arsenopyrite. The above flowsheet is designed for the treatment by flotation of copper as chalcopyrite with gold and silver values. The ore, ranging from 60-65% silica, with pyrite, arsenopyrite, and calcite with 3 to 4% copper.

The use of mixed thiol collectors in the flotation of ...

Table 4.3 The rate of flotation (k) and the maximum recovery for nickel recovery (Rmax) using pure collectors. - "The use of mixed thiol collectors in the flotation of Nkomati sulphide ore"

CA2082831C - Selective flotation process for separation of ...

Abstract This invention provides a process for improved separation of mono/multi-metallic sulphide minerals from significant amounts of iron sulphidess, mainly pyrrhotite and/or their finely divided process middlings. The process comprises subjecting such material to a conditioning stage with at least one water-soluble sulphur-containing inorganic compound as a prerequisite …

The Effect of Oxidation on the Flotation Behaviour of ...

Pn (-36per cent Ni), chalcopyrite, Cp (-34.5per cent Cu) and nickeliferous pyrrhotite, Po (0.3-1.2 per cent Ni in a solid solution form) as the principal sulphides along with pyrite and other sulphides in relatively small and variable amounts. Non-sulphide gangue minerals consist of mainly quartz and

(PDF) Flotation of Nickel-Copper Sulphide Ore ...

the flotation recovery of Ni, Cu and Co from a nick el-copper sulphide ore. The effect on flotation performance of various parameters such as pH, collector dosage, % solids and depressant dosage at