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The item The effect of oxidation on the flotation of chromite and associated minerals, by D.G. Kotlyar, W.K. Tolley, and D.A. Rice represents a specific, individual, material embodiment of a distinct intellectual or artistic creation found in Indiana State Library.
The best increase (around 40%) is achieved at pH 6, while it does not affect chromite's flotation at pH values 8.5–12. With 30 mg L −1 collector FSA has a strong activating action in pH values 4–6. EDTA (Na salt) has a double action and increases chromite's flotation significantly at pH values 5–7.5, while decreases recovery at pH ...
Both 2.6 and 1.4 liter cells Effect of surface potential on chromite flotation 521 were used; the larger for roughing and the smaller for cleaning. The pulp pH was controlled with a Radiometer PHM 82 pH-meter connected to a Radiometer TTT 80 titrator. The pulp density in flotation …
Chromite is one of the main gangue consituents of UG2 ore and it is essential that the amount of chromite reporting to the concentrate during flotation be minimised since it is detrimental to the subsequent smelting operations. It is generally considered that chromite is naturally hydrophilic and only reports to the concentrate by entrainment.
Chemical analysis of the chromite mineral prompted investigation of using flotation to produce a concentrate containing 44 to 48 percent Cr2O3. The best results obtained in this phase of the study showed a concentrate grade of 45.6 percent Cr2O3 …
flotation processes. There is a chrome plant that is installed in the middle of the flotation circuit in order to benefit the increased in PGMs recovery from secondary circuit by lower tonnage to the mill, hence more residence time and better grindings. This mine recovers PGMs …
The US Bureau of Mines compared column flotation using either fine or coarse bubbles with conventional flotation on a Montana chromite ore. On deslimed ore, fine-bubble column flotation produced a 44.7% Cr 2 O 3-grade rougher concentrate with 87% recovery, compared with 43.8% and 43.5% Cr 2 O 3-grade rougher concentrates with 85% and 77% recovery for coarse-bubble column flotation …
Best Flotation Of Chromite; Best Flotation Of Chromite. Flotation of chromite and serpentine - ScienceDirect. Chromite is an important strategic mineral usually associated with other gangue minerals, mainly silicates. A good knowledge of the flotation behaviour of chrom. Read more.
The best increase (around 40%) is achieved at pH 6, while it does not affect chromite's flotation at pH values 8.5–12. With 30 mg L −1 collector FSA has a strong activating action in pH values 4–6. EDTA (Na salt) has a double action and increases chromite's flotation significantly at pH values 5–7.5, while decreases recovery at pH ...
The Bureau of Mines, U.S. Department of the Interior, devised a flotation technique for upgrading chromite in chromium ores and gravity concentrates. The technique consisted of cationic flotation of chromite from a slime-free pulp acidified to ph 2.5 Or lower using h2so4 modifier. Flotation results showed that ore containing serpentine as the primary gangue mineral was more amenable to concentra
Chromite is an important strategic mineral usually associated with other gangue minerals, mainly silicates. A good knowledge of the flotation behaviour of chromite and the establishment of ...
Abstract. The Bureau of Mines investigated column vs conventional flotation of chromite and fluorite ores. Fine-bubble column flotation of deslimed chromite ore produced a 44.7 % Cr 2 O 3 rougher concentrate at 87.1 % recovery, whereas conventional flotation produced a 40.4 % Cr 2 O 3 concentrate at 85.4 % recovery. Column flotation of undeslimed chromite ore also …
The effects of oxidation on the floation of chromite and olivine were studied in an effort to improve chromite recovery from domestic sources. The flotation behavior of pure chromite, pure olivine, and a chromite gravity concentrate were investigated. Freshly prepared chromite floated well between pH 2.2 and pH 4.5, but floated poorly at pH greater than 5.
Flotation recovery of chromite as a function of pH at constant SDS concentration 1 x 10 -4 M is shown in figure 2. The four separate curves of the figure demonstrate the effect of aging of dry chromite that had been ground to flotation size (100/150 mesh) on subsequent flotation …
Flotation, which is a unit process with the potential to solve this problem, has surprisingly received little attention for this application. The literature suggests the research effort to characterise the general flotation properties of chromite (chrome spinel with high chromium content) has been extensive and a substantial amount of data is ...
3.2 Flotation characteristics of high grade chromite Figure 2 shows the chromite flotation recoveries as a function of various dosages of oleic acid at different pH values. The flotation results revealed that increasing the oleic acid dosage up to 3kg/t increases the recovery. Because the pH of the medium is an
Deslimed chromite ore was floated at pH 1.5 to 5.5 using a long-chain fatty-acid collector and soluble fluoride ions as a silicate depressant. The Havens method was later modified slightly to permit flotation without preliminary desliming. This was …
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