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HOT BLAST [9 records]

Record 1 2016-02-25

English

Subject field(s)
  • Foundry Practice
  • Furnaces and Ovens (Metallurgy)
DEF

A shaft furnace used for melting metals, as distinct from a blast furnace in which ore is smelted. Metal, coke and flux are charged from the top of the furnace on to a bed of hot coke through which air is blown.

Key term(s)
  • stack melting furnace
  • shaft melting furnace
  • cupola furnace

French

Domaine(s)
  • Fonderie
  • Fours (Métallurgie)
DEF

Four à cuve verticale cylindrique utilisé pour la fusion de la fonte.

Spanish

Save record 1

Record 2 2011-11-24

English

Subject field(s)
  • Clothing (Military)
  • Modernization of Military Equipment
CONT

The SIHS [Soldier's Integrated Headwear System] headborne system should be designed with warfighting in mind; predominantly for high tempo operations... The highest priority system capability for the headborne system is protection. Chief among these is protection against high and low velocity fragments [and] blast... Similarly, blast and impulse noise injury to the ears has been identified as important from both a protection and a command and control perspective. The future headborne system also needs to integrate CB [chemical and biological] protection for skin and respiration [and needs to include GPS [global positioning system] and radio antennae on the helmet, as well as any combat [identification] detector technology. For camouflage,... temperate and hot environments [are] important and... any future system [needs] to manage light, noise and thermal emissions to avoid detection by the enemy.... Compatibility with weapons, CB protective equipment, and corrective vision spectacles were seen to be essential for the dismounted rifleman role.

French

Domaine(s)
  • Habillement (Militaire)
  • Modernisation du matériel militaire

Spanish

Save record 2

Record 3 2005-03-18

English

Subject field(s)
  • Atmospheric Physics
DEF

A strong, cold northerly wind in various parts of the Northern Hemisphere.

OBS

norther : The term has several specific applications : 1) In the southern United States, especially in Texas(Texas norther), in the Gulf of Mexico, in the Gulf of Panama away from the coast, and in Central America(norte), the norther is a strong cold wind from between northeast and northwest. It occurs between November and April, freshening during the afternoon and decreasing at night. It is a cold air outbreak associated with the southward movement of a cold anticyclone. It is usually preceded by a warm and cloudy or rainy spell with southerly winds. The norther comes as a rushing blast and brings a sudden drop of temperature of as much as 25°F in one hour or 50°F in three hours in winter. 2) The California norther is a strong, very dry, dusty, northerly wind that blows in late spring, summer, and early fall in the valley of California or on the West Coast when pressure is high over the mountains to the north. It lasts from one to four days. The dryness is due to adiabatic warming during descent. In summer it is very hot. 3) The Portuguese norther is the beginning of the trade wind west of Portugal. 4) Norther is used for a strong north wind on the coast of Chile that blows occasionally in summer. 5) In southeast Australia, a hot dry wind from the desert is called a norther.

French

Domaine(s)
  • Physique de l'atmosphère
DEF

Vent fort et froid, venant du nord, dans diverses parties de l'hémisphère Nord.

CONT

[Le] norther [est un] vent du nord sec et froid, soufflant sur le golfe du Mexique et surtout au Texas; [c'est aussi un] vent du nord, chaud et sec soufflant dans la Great Valley de Californie.

CONT

Naviguer en Amérique centrale. [...] la période des northers [...] commence. Cette période va de novembre à avril. En novembre les coups de vent de Nord sont de force raisonnable : 7 à 8 Beaufort mais au fur et à mesure que l'hiver avance, ils se renforcent et peuvent devenir très violents : force 10 ou plus.

CONT

Les températures peuvent néanmoins baisser brusquement sur le Golfe du Mexique lorsque souffle le norther, vent violent et glacial.

OBS

Le Grand dictionnaire encyclopédique Larousse répertorie «northern» au lieu de «norther». Norther figure dans les dictionnaires spécialisés de météorologie.

OBS

northern : Phénomène relevé en Amérique du Nord (centre et sud-est des États-Unis et occasionnellement golfe du Mexique), qui correspond à l'arrivée d'air polaire continental aux latitudes subtropicales, voire intertropicales. (Il se traduit par une forte et tenace chute des températures, la descente vers les basses latitudes d'un front froid et d'un anticyclone thermique postfrontal et à des influences néfastes sur les cultures. Le passage d'un front froid particulièrement marqué sur le golfe du Mexique peut y provoquer des vents de tempête.)

Spanish

Campo(s) temático(s)
  • Física de la atmósfera
DEF

Viento fuerte y frío de componente norte en varias partes del hemisferio Norte.

Save record 3

Record 4 2003-11-13

English

Subject field(s)
  • Ovens, Furnaces and Boilers (Heating)
  • Industrial Techniques and Processes
  • Fluidization (Materials Handling)
CONT

Granules are dried on traces in steam ovens or in a fluidized bed dryer which employs a hot air blast to float the particulars so that moisture is removed.

Key term(s)
  • fluidized bed drier

French

Domaine(s)
  • Fours et chaudières (Chauffage)
  • Techniques industrielles
  • Fluidisation (Manutention)
CONT

Fluidisation. Le produit divisé est placé sur un support poreux. L'air de séchage traverse verticalement, de bas en haut, le support et la couche de produit avec une vitesse telle qu'elle provoque une semi-sustentation des particules de produit par effet aérodynamique. Dans cet état de fluidisation, les échanges sont très intenses et permettent [...] une efficacité remarquable du séchage [...] Deux autres types de sécheurs à lits fluidisés sont présentés sur les figures 8 et 9. [...] Fig. 8. - Sécheur à lit fluidisé avec échangeurs [...] Fig. 9. - Sécheur à lit fluidisé statique.

Spanish

Campo(s) temático(s)
  • Hornos y calderas (Calefacción)
  • Procesos y técnicas industriales
  • Fluidificación (Manipulación de materiales)
Save record 4

Record 5 1999-06-29

English

Subject field(s)
  • Plastics Manufacturing
  • Rubber Processing
DEF

Process for production of fine fibres from molten polymer by a blast of hot gas.

French

Domaine(s)
  • Plasturgie
  • Fabrication du caoutchouc

Spanish

Campo(s) temático(s)
  • Fabricación de plásticos
  • Elaboración del caucho
Save record 5

Record 6 1998-06-09

English

Subject field(s)
  • Foundry Practice
DEF

The term used to describe the heated air forced, under pressure, into the base of a furnace used in smelting practice.

French

Domaine(s)
  • Fonderie
CONT

L'air de combustion dit vent, chaud et sous pression, est introduit par des tuyères situées juste au-dessus du creuset dans une zone appelée ouvrage.

CONT

Un haut fourneau reçoit de l'énergie par l'intermédiaire des combustibles et du vent chaud, et en cède sous forme de gaz combustible.

Spanish

Save record 6

Record 7 1997-11-14

English

Subject field(s)
  • Furnaces and Ovens (Metallurgy)
CONT

A tall iron cylinder lined with firebrick and packed inside with chequer brickwork. The hot gas from the blast furnace, which contains about 28% combustible constituents, together with sufficient air to burn it, passes through the stove until the brickwork is heated to redness. The gas and air are then diverted to a second stove, where the same thing is allowed to occur. Meanwhile the air-blast to the tuyères is passed through the hot brickwork of the firststove, until the brickwork has cooled. The air-blast is thus pre-heated to a temperature of from 700 °C to 800 °C. Cowper stoves work in pairs and are alternatively used to absorb and to emit heat.

French

Domaine(s)
  • Fours (Métallurgie)
DEF

Appareil à inversion utilisé en sidérurgie pour la récupération de la chaleur latente des gaz sortant des hauts fourneaux et pour le réchauffage de l'air envoyé aux tuyères.

Spanish

Save record 7

Record 8 1982-10-08

English

Subject field(s)
  • Iron and Steel

French

Domaine(s)
  • Sidérurgie

Spanish

Save record 8

Record 9 1975-03-11

English

Subject field(s)
  • Refractory Materials (Metallurgy)
  • Equipment and Plant (Metallurgy)
OBS

block of rammed refractory serving as the bottom of the converter and traversed by tuyeres which carry hot blast from the blast box to the bath.

French

Domaine(s)
  • Matériaux réfractaires (Métallurgie)
  • Équipement et matériels (Métallurgie)
OBS

bloc réfractaire damé constituant le fond du convertisseur et traversé par les tuyères qui amènent le vent de la boîte à vent dans le bain.

Spanish

Save record 9

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