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FLOTATION OF MINERAL MATERIALS PowerPoint PPT Presentation


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FLOTATION OF MINERAL MATERIALS. Classification of materials according to their ability to flotation. Class 1. Naturally hydrophobic materials. Graphite, talc, sulfur, some sulfides, coals. collectors: apolar compounds which increase hydrophobicity and speed up flotation.

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FLOTATION OF MINERAL MATERIALS

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Flotation of mineral materials

FLOTATION

OF MINERAL

MATERIALS


Flotation of mineral materials

Classification of materials according to their ability to flotation


Flotation of mineral materials

Class 1. Naturally hydrophobic materials

Graphite, talc, sulfur, some sulfides, coals

collectors: apolar compounds which increase hydrophobicity and speed up flotation


Flotation of mineral materials

Simplified model of coal unit

Contact angle depends on method

of measurement

Hydrophobicity of coal vs. coalification degree


Flotation of mineral materials

Zeta potential (and electrical charge) depends on coalification degree

Coalification vs H, O, and C content in natural carbonaceous matter


Flotation of mineral materials

Class 2. Native metals and sulfides

A) Metals occurring in nature: iron, mercury, copper, gold, platinum metals

B. Sulfides:

lead (galena, PbS)

copper (chalcocite, covellite, chalcopyrite, bornite)

silver (argentite)

zync (sphalerite)


Flotation of mineral materials

Class 2. Native metals and sulfides


Flotation of mineral materials

Xanthate flotation of pyrite


Flotation of mineral materials

Class 3. Oxidized minerals of non-ferrous metals

cerussite (PbCO3)

vanadinite (Pb5[Cl(VO4)3])

anglesite (PbSO4)

malachite (CuCO3·Cu(OH)2

azurite (2CuCO3·Cu(OH)2)

chrysocolla (hydrated copper silicate)

tenorite (CuO)

cuprite (Cu2O)

smithsonite (ZnCO3)


Flotation of mineral materials

Class 3. Oxidized minerals of non-ferrous metals

Approaches:

1. Sulfidization

2. Flotation using either cationic or anionic collectors (as in the case of oxide-type minerals)


Flotation of mineral materials

Class 4. Oxides and hydroxides

Consists of simple oxides (Fe2O3, SnO2), oxyhydroxides (AlOOH) as well as complex oxides and complex hydroxides (spinels, silicates, aluminosilicates).


Flotation of mineral materials

Class 4. Oxides and hydroxides

Oleate flotation of oxide and silicates


Flotation of mineral materials

Class 4. Oxides and hydroxides

Amine flotation of quartz


Flotation of mineral materials

Class 5. Sparingly soluble salts


Flotation of mineral materials

Class 5. Sparingly soluble salts

NaOl - sodium oleate, DDA-dodecylamine, SDS,- sodium dedecyl sulfite


Flotation of mineral materials

Class 5. Sparingly soluble salts

Flotation with potassium octylohydroxymate


Flotation of mineral materials

Class 5. Sparingly soluble salts


Flotation of mineral materials

Class 6. Soluble salts


Flotation of mineral materials

Class 6. Soluble salts


Flotation of mineral materials

Hallimond flotation cell


Flotation of mineral materials

Laboratory Mechanobr flotation machine


Flotation of mineral materials

Denver DR flotation machine


Flotation of mineral materials

Jameson flotation cell


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