pentlandite nickel recovery in rougher cells

nickel flotation machine for nickel separation

Flotation of Nickel Copper Sulphide Ore Optimisation of . 2. 2. Flotation Procedure All the flotation test work was done using the Denver laboratory machine with a 1.5l stainless steel flotation cell. The required mass of nickel copper sulphide ore material ground to 70% passing 75 µm was weighed and placed in the flotation cell.

copper flotation nickel - srisatyadevanursery.in

copper flotation nickel_Copper Nickel Flotation Copper Nickel Flotation Tests Testing of the shaft sample was conducted with sodium isopropyl xanthate collector throughout the …

Development of a Combined Flotation and High Pressure ...

the grade and recovery of copper, whereas further increases in PAX had mod-erate changes in the grade and recovery of nickel. The grade and recovery of nickel increased up to 0.41 wt% and 31.0% from 0.17 wt% and 10% with in-creasing PAX dosage from …

US6044978A - Process for recovery of copper, nickel and ...

The present invention provides a process for the recovery of base metal sulfides including chalcocite, chalcopyrite, pentlandite and platinum group metal bearing mineral ores. The process involves passing a slurry of the ore through a reagent conditioning stage wherein suitable activators, collectors, frothers and/or depressants are added, further conditioning the slurry with a non-oxidizing ...

Pentlandite oxidation in the flotation of a complex nickel ...

Jan 01, 2011· 1. Introduction. Pentlandite flotation in Western Australia has historically been difficult due to a low nickel grade and large amounts of serpentine minerals (Senior and Thomas, 2005).The hypersaline water used in the flotation plants makes the traditional serpentine dispersants ineffective (Wellham et al., 1992).In the past 10 years, many studies have been conducted and nickel recovery …

Effect of feed preparation on copper activation in ...

In this work, the effect of copper sulphate on the flotation of Mt Keith pentlandite ores was studied. As Mt Keith operates separate size flotation circuits, e.g. slime (−8 μm), fine (−25 μm) and coarse (−160 μm) circuits, tests were conducted on streams of different particle …

Minerals | Free Full-Text | A Process Mineralogical ...

2 · A process mineralogical study based on three texturally and mineralogically different chromite-bearing ore types at the Nkomati nickel mine was undertaken, with focus on chromite. Chromite is a by-product of the Ni-Cu-Co-PGE ore at Nkomati Nickel mine. These being the PCMZ_MG (medium-grade Ni-Cu sulphide silicate ore with disseminated chromite), PCMZ_HG (high-grade Ni-Cu sulphide …

Optimisation of Reagent Addition during Flotation of a ...

improvement in nickel recovery in the roughing stages must be evaluated against the subsequent effect on the cleaning stages. Stage dosing both collector and depressant, individually and collectively, proved to be beneficial by improving the nickel recovery. Stage dosing of both collector and depressant

CHAPTER 3 COMPARISON OF DIFFERENT PYRRHOTITE …

DEPRESSANTS IN PENTLANDITE FLOTATION 3.1 INTRODUCTION Due to the similarities in mineralogy and chemical composition, and as well as the pyrrhotite collectorless flotation, it is difficult to achieve a clean separation between pentlandite and pyrrhotite. Pyrrhotite rejections has been a long-standing problem in the nickel industry.

Copper activation option for a pentlandite–pyrrhotite ...

pyrrhotite (24.1 %) and concentrate pentlandite and chal-copyrite (both only 3.7 %), but the pyrrhotite contains about 14 % of the total nickel content in the ore, as can be inferred from the composition in Table 1. Rejecting the total pyrrhotite content therefore implies that the overall recovery will, by such process design, be capped below 86 %.

A method for improving selectivity and recovery in the ...

WO 2013/152412 PCT/BR2013/000121 A METHOD FOR IMPROVING SELECTIVITY AND RECOVERY IN THE FLOTATION OF NICKEL SULPHIDE ORES THAT CONTAIN PYRHOTITE BY EXPLOITING THE SYNERGY OF MULTIPLE DEPRESSANTS 5 This application claims priority from U.S. Patent Application No. 61/623,459, titled "A Method for Improving Selectivity and Recovery in the Flotation of Nickel …

Copper activation option for a pentlandite–pyrrhotite ...

May 30, 2016· Linking the pyrrhotite recovery to nickel recovery, with the 10 % increase in pyrrhotite recovery after the conditioning, about a tenth more of the pentlandite in pyrrhotite was recovered. This also implies that there was about 1.4 % increased recovery of the total nickel content, given that 14 % of total nickel is in pyrrhotite (Table 1). At ...

Possibilities of collectorless flotation in the treatment ...

Nov 01, 1991· The flotation of pentlandite was somewhat slower having a difference in response between 8 and 16 min as can be seen from Fig. 3. This indicates that the oxidation of pyrrhotite and chalcopyrite progressed more rapidly than that of pentlandite. Chalcopyrite, pyrrhotite and pentlandite all floated with a high recovery at low pH values of 3-5.

The Application of High Intensity Flotation Technology at ...

The pilot plant experimental scope included over 50 tests. A grade recovery curve for each stream was developed, as well as information on the effect of ore type, feed rate, wash water, air flow, collector and frother on the performance of the cell. The single StackCell was able to achieve nickel recoveries of 16.8% and 16.5% on the Rougher

lead rougher cells for graphite mine high speed

Nickel Recovery from Mine Tailing type laboratory flotation cell to upgrade recoveries of Cu and Ni the ore and also lower floatability of pentlandite pentlandite nickel recovery in rougher cells - lemon Flotation cell is made up of 25 L removable cell high-speed impeller to agitate the pulp and froth nickel …

Differential flotation of chalcopyrite, pentlandite and ...

Oct 01, 1996· As recovery of the non- sulphide gangue is essentially unaffected by the chemistry of pulp (Fig. 5), a difference in grade-recovery performances is a direct consequence of flotation selectivity between sulphides, namely between pyrrhotite and chalcopyrite (Fig. 4), as well as pentlandite and chalcopyrite (Fig. 3).

Flotation of chalcopyrite, pentlandite, pyrrhotite ores ...

Nov 01, 1991· After cleaning the rougher con- centrate practically all of the pentlandite is recovered with about 20% of the pyrrhotite. While this performance is routine in the plant, laboratory repro- duction of this high nickel recovery and low pyrrhotite recovery have proven to be illusive targets.

Removal behavior of slime from pentlandite surfaces and ...

Aug 15, 2018· The recovery increased to 88% from 80% when the conditioning time was increased from 3 min to 40 min at a conditioning speed of 2800 r/min. The results in Fig. 5(b) illustrate that with the increase of nickel recovery, the grade of nickel decreased. The longer conditioning time produces a vastly superior nickel grade-recovery relationship.

nickel ore flotation cells for mineral - Campus Rugby 2019

nickel ore flotation cells for mineral; Copper Nickel Flotation ... In sulphide nickel ores, the predominant nickel bearing mineral pentlandite is almost always is associated with pyrrhotite and often found to be associated with other sulphides like iron sulphides (pyrite).

Froth flotation - Wikipedia

Froth flotation is a process for selectively separating hydrophobic materials from hydrophilic.This is used in mineral processing, paper recycling and waste-water treatment industries. Historically this was first used in the mining industry, where it was one of the great enabling technologies of the 20th century.

The separation of pentlandite from chalcopyrite ...

• Pentlandite in a ultramafic environment will likely be fl oated in soda ash while in a pyrrhotite environment its likely to be lime Sudbury Basin ore 0 10 20 30 40 50 60 70 80 90 100 11‐21‐31‐41‐5 Recovery (%) Cell Recovery down the bank Cp Pn Po Gangue

Selectve agglomeration of magnetite in entlandite ...

passed to two parallel rougher scavenger flotation, and then were cleaned, while the overflows of the only second stage cyclones passed to the flotation column. As a result, a substantial increase in the nickel recovery was achieved (Senior and Thomas, 2005). Other approaches proposed to improve flotation of pentlandite minerals

Metallurgy - Panoramic Resources

Historically, the optimum product from Savannah was a bulk concentrate averaging 7.5% nickel grade at a recovery of 85-87% depending on the mill head grade. Laboratory scale flotation testwork has shown that Savannah North samples achieve a slightly lower recovery (typically 3-5% lower) compared to a Savannah reference sample, which is ...

The Effects of Water Recycling on Flotation at a North ...

The pyrrhotite recovery versus pentlandite recovery and gangue recovery versus pentlandite recovery selectivity curves are shown in Figure 22 and ... The nickel + copper grade in the primary rougher concentrate decreased when thickener overflow stream obtained in April 2019, June 2019 and August 2019 was used. ... For nickel recovery, the ...

Copper activation option for a pentlandite–pyrrhotite ...

Linking the pyrrhotite recovery to nickel recovery, with the 10 % increase in pyrrhotite recovery after the conditioning, about a tenth more of the pentlandite in pyrrhotite was recovered. This also implies that there was about 1.4 % increased recovery of the total nickel content, given that 14 % of total nickel is in pyrrhotite (Table 1).

Removal behavior of slime from pentlandite surfaces and ...

The flotation result shows that the pentlandite recovery decreased from 87% to 65% with the increase of the content of cement filling from 0% to 8%. ... for study was nickel rougher flotation from ...

Process flowsheet development for beneficiation of nickel ore

A nickel concentrate containing 12.32% Ni was produced with 89.7% recovery and final tailings with 0.088% Ni can be disposed with 4.9% of metal loss. A process flowsheet was developed according to ...

Parameters Nickel Sulphide Ore Using Optimum Flotation ...

Xanthates Collectors on the Recovery of Nickel and Pentlandite in a Low Grade Nickel Sulphide Ore Using Optimum Flotation Parameters, Particulate Science and …

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

The primary rougher concentrate feeds the copper/nickel separation column (column #1), producing copper concentrate and nickel-richtailings. ... (first bank of six small cells), pyrrhotite recovery ... and pentlandite are much higher than that of pyrrhotite. Thus, with its marginal pyrrhotite content, the primary rougher ...

Application of three xanthates collectors on the recovery ...

Oct 24, 2006· The optimum nickel and pentlandite recovery was achieved at particle size of 64.73 µm milled for 1.5 h, pH of 9.65 and using a new flotation cell. Also, collector recovered more nickel and pentlandite contents compared to PAX and SIBX collectors when optimum parameters of particle size, milling time, pH and flotation cell were considered.

MILESTONES IN THE IMPROVEMENT OF CONCENTRATOR …

Installation and commissioning of 100m3 Outokumpu flotation tank cell in 1996 resulting in nickel recovery improvement of 0.20 %, Replacement of rougher and scavenger flotation banks in 1999 by adding 12 % additional flotation capacity, Millstar and Floatstar for process control of the grinding and flotation circuits in 2001/2002.

Froth Flotation Circuit Design And Basic Testwork ...

Froth flotation is a very important mineral concentration process that is used to recover a vast array of different minerals containing valuable commodities such as copper, lead, zinc, nickel, molybdenum, tungsten, silver, gold, phosphate and potash.