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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

FLOTATION

OF MINERAL

MATERIALS



Flotation of mineral materials

Class 1. Naturally hydrophobic materials flotation

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 flotation

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 coalification degree

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

Xanthate flotation of pyrite coalification degree


Flotation of mineral materials

Class 3. Oxidized minerals of non-ferrous metals coalification degree

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 coalification degree

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 coalification degree

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 coalification degree

Oleate flotation of oxide and silicates


Flotation of mineral materials

Class 4. Oxides and hydroxides coalification degree

Amine flotation of quartz



Flotation of mineral materials

Class 5. Sparingly soluble salts coalification degree

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


Flotation of mineral materials

Class 5. Sparingly soluble salts coalification degree

Flotation with potassium octylohydroxymate



Flotation of mineral materials

Class 6. Soluble salts coalification degree


Flotation of mineral materials

Class 6. Soluble salts coalification degree


Flotation of mineral materials

Hallimond flotation cell coalification degree



Flotation of mineral materials

Denver DR flotation machine coalification degree


Flotation of mineral materials

Jameson flotation cell coalification degree