TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

CONE-SHAPED TOP [3 records]

Record 1 2016-03-07

English

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

Fine-particle Cleaning With Dense Media. Application of centrifugal action to the heavy medium has permitted the extension of the heavy-medium separation process to particles as fine as 65 mesh. Dense-media Cyclones. The material to be treated, which may range in size from [1 1/4] in. to 35 mesh and typically [3/8] in. X 35 mesh, is pulped with the medium, and this pulp is fed tangentially through the feed inlet(...) to the short cylindrical section [that] carries the central "vortex finder"(...) which prevents short circuiting within the cyclone. Separation is made in the cone-shaped part of the cyclone(...) by the action of centrifugal and centripetal forces. The heavier portion of the feed leaves the cyclone at the apex opening(...), and the lighter portion leaves at the overflow top orifice.

Key term(s)
  • dense medium cyclone
  • heavy media cyclone
  • heavy medium cyclone

French

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

Les séparateurs cyclones. Lorsqu'une séparation précise est nécessaire dans un domaine de dimension comprise entre 0,4 et 4 mm, le cyclone en milieu dense est le seul appareil qui puisse donner des résultats intéressants. La force de gravité est remplacée par la force centrifuge.

Key term(s)
  • cyclone en liqueur dense

Spanish

Save record 1

Record 2 2003-11-13

English

Subject field(s)
  • Papermaking Machines
DEF

A pulp stock cleaner in which pressurized slurry is tangentially injected into a truncated, cone-shaped vessel to produce a rapid spinning action of the suspension, causing a centrifugal force that moves the heavier particles to the outside wall where they drop down to the bottom and are removed. The inner vortex column with the acceptable fiber moves to the top where it is removed for further processing.

French

Domaine(s)
  • Machines à papier
DEF

Appareil de classage, alimenté tangentiellement, qui utilise l'action d'un vortex pour débarrasser la pâte de ses impuretés.

Spanish

Campo(s) temático(s)
  • Máquinas para fabricar papel
Save record 2

Record 3 1997-01-29

English

Subject field(s)
  • Coins and Bank Notes
  • Numismatics
  • Coining
OBS

A soft steel cylinder is placed into the die-sinking press with its cone-shaped top touching the centre of the reduction matrix(negative design). A single stroke from the press imparts the design of the matrix into the block below like the effect produced by pressing a signet ring into soft wax. The resultant positive-design block, the punch is heat-hardened for use in the final step. In a similar impression process, the design of the punch is imparted to a series of steel blocks to provide the quantity of negative dies required for the coinage.

French

Domaine(s)
  • Pièces de monnaie et billets de banque
  • Numismatique
  • Monnayage
OBS

Dans la presse d'enfonçage, on met un cylindre d'acier tendre dont l'extrémité en forme de cône touche le centre de la matrice de réduction (modèle négatif). La presse imprime d'un seul coup le dessin de la matrice au bloc d'acier placé en dessous, produisant un effet analogue à celui d'un cachet sur la cire molle. Le bloc positif ainsi obtenu, appelé poinçon, est durci par traitement thermique pour servir à l'étape finale. Par un processus d'impression analogue, on reproduit le motif du poinçon sur une série de blocs d'acier, engendrant ainsi la quantité de coins négatifs nécessaire pour la frappe.

Spanish

Save record 3

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