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MACHINE FLOTTATION [4 records]

Record 1 2016-03-07

English

Subject field(s)
  • Mineral Processing (Metallurgy)
  • Chemical Engineering
DEF

[A pneumatic flotation machine consisting] of a long trough in the bottom of which is a longitudinal cylindrical rotor, covered with a porous medium, revolving slowly at about 15 revolutions per minute. The rotor is mounted at each end on hollow shafts extending out of the cell at each end through packing glands or through specially designed gland eliminators. Low-pressure air is introduced through the shaft at either end, or, for better control of aeration in various parts of the cell, the rotor may be divided into two sections and air introduced at both ends. The rotor is fitted with two longitudinal angle-iron scraper bars, which prevent settling and accumulation below it and thus protect the mat. The pulp enters at one end and is subjected to thorough aeration in passing through the machine. Froth overflows the sides, and tailings are discharged at the end by means of an adjustable weir overflow.

Key term(s)
  • Callow-MacIntosh pneumatic flotation cell
  • Callow-MacIntosh pneumatic floatation machine

French

Domaine(s)
  • Minéralurgie (Métallurgie)
  • Génie chimique
CONT

Machines de flottation pneumatiques. Ces machines utilisent de l'air comprimé à la fois pour l'aération et pour l'agitation. [...] La cellule Callow-MacIntosh [...] comporte un rotor creux en acier perforé [...]. Ce rotor est entouré de toile ou de caoutchouc perforé. Elle présente l'avantage de se colmater difficilement [...]

Spanish

Save record 1

Record 2 2016-03-07

English

Subject field(s)
  • Processing of Mineral Products
  • Mineral Processing (Metallurgy)
DEF

Machine in which the air used to generate a mineralised froth is blown into the cell, either through a porous septum at or near the bottom, or by pipes which bring low-pressure air to that region.

OBS

In pneumatic cells, the air flow also provides agitation of pulp. While the actual number of plants with air cells is relatively small, the majority of these units are used in concentration of copper ores and handle fairly large tonnages.

Key term(s)
  • pneumatic floatation cell

French

Domaine(s)
  • Préparation des produits miniers
  • Minéralurgie (Métallurgie)
DEF

Machine de flottation dans laquelle l'aération et l'agitation sont obtenues à l'aide d'une injection d'air comprimé dans la pulpe.

Key term(s)
  • cellule de flottation pneumatique
  • machine pneumatique

Spanish

Save record 2

Record 3 2007-08-28

English

Subject field(s)
  • Processing of Mineral Products
  • Mineral Processing (Metallurgy)
  • Coal Preparation
DEF

A device that separates minerals from ore water pulp.

OBS

It consists of a cell in which the pulp is kept moving by an impeller at the bottom of the cell; the impeller pulls air down the standpipe and disperses it as air bubbles through the pipe; the floatable minerals concentrate in the froth above, and the pulp is removed by a scraper.

OBS

By contrast, pulp in the pneumatic flotation cell is agitated by air.

French

Domaine(s)
  • Préparation des produits miniers
  • Minéralurgie (Métallurgie)
  • Préparation des charbons
DEF

Machine de flottation dans laquelle l'agitation et la dispersion de l'air sont obtenues mécaniquement.

Spanish

Save record 3

Record 4 2000-08-09

English

Subject field(s)
  • Processing of Mineral Products
  • Mineral Processing (Metallurgy)

French

Domaine(s)
  • Préparation des produits miniers
  • Minéralurgie (Métallurgie)

Spanish

Save record 4

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