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IMPACT GRINDING [6 records]

Record 1 2012-10-03

English

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

Breaking of particles by the direct fall of crushing bodies upon them.

French

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

Spanish

Campo(s) temático(s)
  • Preparación de los productos mineros
  • Explotación de minerales (Metalurgia)
Save record 1

Record 2 2003-08-12

English

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

A unit that reduces the size of rocks and minerals by the action of rotating blades projecting the material against steel plates.

French

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

Broyeur dans lequel un rotor entraîne la matière et la projette contre des plaques.

Spanish

Save record 2

Record 3 2001-02-16

English

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

Aerofall Mill. The aerofall autogenous and semi-autogenous air swept mills are additional solutions for dry grinding. These mills are typically very large in diameter and very short in length achieving high throughput. The material is lifted to great heights using lifter bars and dropped with forceful impact onto itself in the mill. The mill system would include separators and cyclones downstream from the mill to return rejected material to the mill, if needed. The aerofall mill is good for grinding abrasive materials with high moisture content and large feed size.

CONT

Quarried material is taken by conveyor or trucks to the processing plant where, if it is in rock form, it will be crushed to ensure that it is of a suitable size to pass by conveyor to the stockpile. From the stockpile it is fed, again by conveyor and a controlled amount of water to a rotating aerofall mill, which contains heavy metal liners, which help tumble the rock onto itself, crushing through various screens, spiral classifiers and washing tanks to remove unwanted impurities.

French

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

Broyeur cylindrique, court, de grand diamètre, travaillant à sec avec comme corps broyants des morceaux de roche, des galets ou des boulets.

OBS

Le broyeur est ventilé pour évacuer le produit broyé à partir d'une certaine granulométrie.

Key term(s)
  • Aérofall
  • Aerofall

Spanish

Save record 3

Record 4 2000-07-12

English

Subject field(s)
  • Geology
  • Erosion and Weathering (Geol.)
DEF

The mechanical wearing, grinding, scraping, or rubbing away(or down) of rock surfaces by friction and impact, in which the solid rock particles transported by wind, ice, waves, running water, or graving are the tools of abrasion.

CONT

Breccias are characterized by angular fragments of altered wallrock in a matrix of quartz and/or tourmaline. Generally, no rotation or mechanical abrasion of the fragments has been observed.

OBS

Compare with "corrasion."

French

Domaine(s)
  • Géologie
  • Érosion et corrosion (Géologie)
DEF

Action d'usure, d'une surface solide, produite par le frottement des particules solides entrant en contact avec cette surface.

OBS

Le mot s'applique surtout à l'action de la mer au niveau de l'estran et à certaines profondeurs.

Spanish

Campo(s) temático(s)
  • Geología
  • Erosión y corrosión (Geología)
DEF

Acto o proceso de desgate por fricción, o los efectos resultantes de este proceso, con movimiento de detritos, ya sea debido a un curso de agua, al mar, al hielo o al viento.

Save record 4

Record 5 1997-12-03

English

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

[A mill] which grinds abrasively, using rubbing action to disintegrate material, not impact shattering.

CONT

Scientists are studying three minerals-talc, calcite, and quartz-in impact, vibratory, and attritor-type grinding mills and in four types of air classifiers.

Key term(s)
  • attritor grinding mill
  • attrition grinding mill
  • attritor mill

French

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

Les chercheurs ont étudié trois minéraux, le talc, la calcite et le quartz, dans trois types de broyeuses (par chocs, par vibrations et par frottement) et dans quatre types de classificateurs à air.

Spanish

Save record 5

Record 6 1986-11-21

English

Subject field(s)
  • Mineralogy
CONT

Scientists are studying three minerals-talc, calcite, and quartz-in impact, vibratory, and attritor-type grinding mills and in four types of air classifiers.

French

Domaine(s)
  • Minéralogie
CONT

Les chercheurs ont étudié trois minéraux, le talc, la calcite et le quartz, dans trois types de broyeuses (par chocs, par vibrations et par frottement) et dans quatre types de classificateurs à air.

Spanish

Save record 6

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