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Apport du génie des procédés à l'hydrométallurgie

Apport du génie des procédés à l'hydrométallurgie

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Only data for tests at I=0 H+ k = 106 m/s Other ions k = 106 m/s. 2 Separation of chromite from olivine by flotation ( L. Turri avec H. Muhr (Valorco, avec ArcelorMittal .) 13 Context: CO 2 produced in steel manufacturing is to be sequestrated by chemical reaction of olivine (silie) at 20100 bars CO 2, 150°C MgFe silies + CO 2 = SiO 2 + MgFe carbonates For ...

Olivine‐wadsleyite transition in the system (Mg,Fe)2SiO4 ...

Olivine‐wadsleyite transition in the system (Mg,Fe)2SiO4 ...

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 · [1] Phase relations of the olivinewadsleyite transition in the system (Mg,Fe) 2 SiO 4 have been determined at 1600 and 1900 K using the quench method in a Kawaitype highpressure apparatus. Pressure was determined at a precision better than GPa using in situ Xray diffraction with MgO as a pressure standard. The transition pressures of the endmember Mg 2 SiO 4 are estimated .

Recover Chromite by Flotation

Recover Chromite by Flotation

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 · The test procedure and results of a typical test are described below. Flotation procedure on the Billie sample was the same as for the George Len sample, except that a larger amount of slimes present made more reagent necessary, and no sulfuric acid was added during the rougher flotation step. In the conditioning steps, pounds of fuel oil and 20 pounds of tall oilpetroleum .

(PDF) Investigation into the mineralogy and flotation ...

(PDF) Investigation into the mineralogy and flotation ...

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Flotation scale is variable due to its sensitivity to amongst other factors: con ditioning time, type of collector, preparation procedures and the The total solids and water recovered from batch flotation tests presence of slimes in the ore (Bulatovic, 2010). for all conditions evaluated are presented in Fig. 1. The figure The objective of this study is to characterise the mineralogy and ...

Idic medium flotation separation chromite from olivine and ...

Idic medium flotation separation chromite from olivine and ...

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FLOTATION BEHAVIOR OF SUDANESE CHROMITE ORES chiefly serpentine and olivine When grounded to100µm the serpentine dominated the fines, chromite the medium particles and olivine the coarse Strongly alkaline pulp (more thanpH10) was used, with sodium oleate and oleic acid to float the serpentine The pulp was then rendered acidic (pH3) and chromite was floated with 075lb/ton of

Olivine Flotation Equipment

Olivine Flotation Equipment

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Olivine Flotation Equipment; Acidic medium flotation separation of chromite from ... Aug 11, 2017 silica sand magnetite iron ore beneficiation plant cost buy iron to our extensive use of latest technology and stringent quality testsgold machine equipment inc, (stock code: 836079)under xinhai is a stockholding high and flotation machine used in mining processing,iron ore processing line china ...

Selective flotation of ilmenite from olivine using the ...

Selective flotation of ilmenite from olivine using the ...

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Batch flotation test results indie that, compared with the depressant WG, the depressant AWG not only increases the recovery and grade of the Ti concentrates by % and %, respectively, but also decreases the depressant consumption by twofifths. Adsorption tests and zetapotential measurements indie that the AWG exhibits a stronger adsorption on the surface of olivine than ...

FLOTATION BEHAVIOR OF SUDANESE CHROMITE ORES

FLOTATION BEHAVIOR OF SUDANESE CHROMITE ORES

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Olivine, iron oxides and talc have been identified as minor minerals. Adequate degree of liberation of chromite was obtained by grinding the ore to minus 180µm. Froth flotation was used to upgrade this chromite ore. Oleic acid was used as collector. Several operating parameters influencing the floatability of the Sudanese chromite ores were investigated. These include the collector and ...

Influence of aluminum–sodium silie on olivine flotation ...

Influence of aluminum–sodium silie on olivine flotation ...

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In this work, the performance of the novel depressant aluminum–sodium silie (Al–Na 2 SiO 3) was compared to that of Na 2 SiO 3, and the flotation and adsorption on the olivine surface were investigated with singlemineral flotation tests, zeta potential measurements, microcalorimetry, Fouriertransform infrared (FTIR) spectroscopy, and thermodynamic analyses.

Interpreting the role of reagents in the flotation of ...

Interpreting the role of reagents in the flotation of ...

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flotation tests indied that the recovery of chalcopyrite was not affected when operating conditions were varied, whereas pentlandite recovery was strongly affected by the point of reagent addition, and pyrrhotite recovery was enhanced by copper sulphate addition, irrespective of the point of addition, with the extent being dependent on the ore source. Floatable gangue was activated by ...

flotation of chromite from the silica

flotation of chromite from the silica

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In these flotation tests, chromite minerals were floated and separated from gangue minerals in presence of H 2 SO 4 very effectively. The results in the Table 2 show that higher recovery ratio of chromite with lower recovery ratio of silica has been obtained at low pH values for almost all chromite ores. Flotation 1 st Cleaning 2 nd Cleaning 3 ...

olivine flotation flow

olivine flotation flow

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01/01/2019 The olivine used here was the pristine mineral, not treated by flotation. Carbonation tests have been carried out during 90 min, at 175°C and 100 bars with CO 2, plus N 2 as pressure driving gas. 600 g olivine were added to 1200 cm 3 solution of M sodium hydrogencarbonate, M oxalic acid and M ascorbic acid. More

ferrochrome by floatation

ferrochrome by floatation

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The flotation of the unreacted olivine was tested as a first flotation step, which was simulated by flotation of raw input material, the pure Norwegian olivine 20 µm with dodecylamine as collector, MIBC as frother and at neutral flotation test resulted in a recovery of up to %.

The Archean komatiitehosted, PGEbearing Ni–Cu sulfide ...

The Archean komatiitehosted, PGEbearing Ni–Cu sulfide ...

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 · Olivine cumulates are mainly homogeneous, massive, and fine to mediumgrained. The primary textures in these rocks include: (1) ... The flotation tests also indie a high Ni content of ∼38 wt% for the sulfide fraction in the Vaara ore (Fig. 11a). This value is significantly higher than the average Ni tenors of different ore shoots in Kambalda (commonly 8–17,, Cowden et al. 1986 ...

Olivine flotation in mantle melt

Olivine flotation in mantle melt

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 · Olivine flotation in the experimental komatiite commences at a pressure close to where the liquidus phase changes from olivine to denser garnet, leading to the possibility of density driven crystal sorting during fractionation. Molten peridotite (KLB1) shows an isothermal compression (2000°C) of g cm −3 GPa −1 in the interval 10 5 Pa to GPa. The olivine/liquid peridotite ...

Levin Grindability Index Test Method Procedure

Levin Grindability Index Test Method Procedure

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 · Grindability Index Test Method Procedure. IsaMills. The Levin test appears to be underused for sizing regrind ball mills. Examples of the results are shown in Table 6. The requirement of 2030 kg may be a prohibitive factor. The Levin test is a modified Bond Ball test, but makes use of finer screen sizes, and finer feed sizing.

Our olivine flotation concentrate

Our olivine flotation concentrate

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The flotation behavior of pure chromite, pure olivine, and a chromite gravity concentrate were investigated. Minerals were heated in air at 50°C for 3 h, or at 150 or 250°C for 18 or 70 h to oxidize the mineral surfaces. The flotation response for the oxidized minerals was measured as a function of collector concentration and pH.

Influence of aluminum–sodium silie on olivine flotation ...

Influence of aluminum–sodium silie on olivine flotation ...

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 · Olivine samples ( Mg 2 [SiO 4]⋅ 2 [SiO 4]) for the present study were supplied from Panzhihua (Sichuan province, China) and its purity is more than 98%.After being subjected to manual selection, crushing, grinding, and screening, the powder with particle sizes of 38–75 μm was used for flotation tests and microcalorimetry analyses (Xu et al., 2017a), whereas that with particle ...

Lab experiments using different flotation cell geometries

Lab experiments using different flotation cell geometries

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and flotation tests. The sample preparation involves materials handling, grinding, splitting, and sieving for the olivine material. Flotation tests are performed to investigate the influence of the impeller speed, as a hydrodynamic variable, during the scalingup in a laboratoryscale. This influence is examined in terms of particle size, recovery, and the flotation rate constant. vi ...

Flotation of Chromite Ore

Flotation of Chromite Ore

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 · Benchscale flotation tests were performed on chromium ores using a Denver laboratory flotation machine. ... Petrographic examination of the pH flotation products showed olivine to be present in the concentrate while serpentine remained in the tailings. To increase the selectivity of Mouat ore to amine flotation of chromite, a selective olivine depressant must be found. Flotation of ...

Årsredovisning och Annual Report and ...

Årsredovisning och Annual Report and ...

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In March, Minelco assumed control of olivine production and operations in Greenland. In May, the flotation plant was inaugurated in Svappavaara. Thereby, all concentrating plants in Kiruna and Svappavaara are equipped for flotation. Test mining of 50,000 .

Minerals | Free FullText | A Process Mineralogical ...

Minerals | Free FullText | A Process Mineralogical ...

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Benchtop flotation test work was performed on the PCMZ_MG, PCMZ_HG and MCHR ore using the same reagent scheme as described below as a pretreatment step before processing by gravity separation. This was done to investigate the influence that the preflotation stage has on chromite recovery. Metallurgical samples from the Nkomati PCMZChrome and MCHRChrome washing plants .

NIINIMÄKI NICKEL DEPOSIT Exploration history

NIINIMÄKI NICKEL DEPOSIT Exploration history

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ore body by 6 drill holes () and flotation test in 1995. GTK continued exploration in other parts of the intrusion and discovered the disseminated orebodies A and B and the plate ore body during . In 1997 Outokumpu Mining Oy studied the eastern block of the intrusion by bedrock mapping, geophysics, surficial geochemistry and core drilling (6/ m). These studies did not ...

Flotation of Olivine in the Peridotite Melt at High ...

Flotation of Olivine in the Peridotite Melt at High ...

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We also conducted a buoyancy test for the pyrollite melt. Olivine with the Fo 95 composition sinks in the melt at 8 GPa. This result together with that of the FeO rich peridotite melt implies that the density crossover will exist at the pressure around 12 GPa in the magma with the terrestrial mantle composition.

v115n12a13 The effect of sodium carbonate on the ...

v115n12a13 The effect of sodium carbonate on the ...

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(46% w/w) and olivine (19% w/w), as determined by Xray diffraction. The effect of sodium carbonate on the dispersion behaviour and froth flotation of a nickel ore by B. Feng*†, Feng†, Lu†, and Wang* 13.2. The effect of sodium carbonate on the flotation performance of a nickel ore was studied and the mechanism investigated. The flotation results show that lizardite ...