Definition of Shaft furnace. Meaning of Shaft furnace. Synonyms of Shaft furnace

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Definition of Shaft furnace

Shaft furnace
Shaft Shaft, n. [OE. shaft, schaft, AS. sceaft; akin to D. schacht, OHG. scaft, G. schaft, Dan. & Sw. skaft handle, haft, Icel. skapt, and probably to L. scapus, Gr. ????, ????, a staff. Probably originally, a shaven or smoothed rod. Cf. Scape, Scepter, Shave.] 1. The slender, smooth stem of an arrow; hence, an arrow. His sleep, his meat, his drink, is him bereft, That lean he wax, and dry as is a shaft. --Chaucer. A shaft hath three principal parts, the stele [stale], the feathers, and the head. --Ascham. 2. The long handle of a spear or similar weapon; hence, the weapon itself; (Fig.) anything regarded as a shaft to be thrown or darted; as, shafts of light. And the thunder, Winged with red lightning and impetuous rage, Perhaps hath spent his shafts. --Milton. Some kinds of literary pursuits . . . have been attacked with all the shafts of ridicule. --V. Knox. 3. That which resembles in some degree the stem or handle of an arrow or a spear; a long, slender part, especially when cylindrical. Specifically: (a) (Bot.) The trunk, stem, or stalk of a plant. (b) (Zo["o]l.) The stem or midrib of a feather. See Illust. of Feather. (c) The pole, or tongue, of a vehicle; also, a thill. (d) The part of a candlestick which supports its branches. Thou shalt make a candlestick of pure gold . . . his shaft, and his branches, his bowls, his knops, and his flowers, shall be of the same. --Ex. xxv. 31. (e) The handle or helve of certain tools, instruments, etc., as a hammer, a whip, etc. (f) A pole, especially a Maypole. [Obs.] --Stow. (g) (Arch.) The body of a column; the cylindrical pillar between the capital and base (see Illust. of Column). Also, the part of a chimney above the roof. Also, the spire of a steeple. [Obs. or R.] --Gwilt. (h) A column, an obelisk, or other spire-shaped or columnar monument. Bid time and nature gently spare The shaft we raise to thee. --Emerson. (i) (Weaving) A rod at the end of a heddle. (j) (Mach.) A solid or hollow cylinder or bar, having one or more journals on which it rests and revolves, and intended to carry one or more wheels or other revolving parts and to transmit power or motion; as, the shaft of a steam engine. See Illust. of Countershaft. 4. (Zo["o]l.) A humming bird (Thaumastura cora) having two of the tail feathers next to the middle ones very long in the male; -- called also cora humming bird. 5. [Cf. G. schacht.] (Mining) A well-like excavation in the earth, perpendicular or nearly so, made for reaching and raising ore, for raising water, etc. 6. A long passage for the admission or outlet of air; an air shaft. 7. The chamber of a blast furnace. Line shaft (Mach.), a main shaft of considerable length, in a shop or factory, usually bearing a number of pulleys by which machines are driven, commonly by means of countershafts; -- called also line, or main line. Shaft alley (Naut.), a passage extending from the engine room to the stern, and containing the propeller shaft. Shaft furnace (Metal.), a furnace, in the form of a chimney, which is charged at the top and tapped at the bottom.

Meaning of Shaft furnace from wikipedia

- commercial iron and steel, and the shaft furnaces used in combination with sinter plants in base metals smelting. Blast furnaces are estimated to have been responsible...
- An electric arc furnace (EAF) is a furnace that heats material by means of an electric arc. Industrial arc furnaces range in size from small units of...
- can be classified into shaft furnace roasting, rotary kiln roasting, fluidized bed roasting, and microwave roasting. Shaft furnace magnetization roasting...
- Celsius or more above the initial furnace temperature Flame continuously for 10 seconds or more inside the furnace Otherwise, the material is classified...
- to temper the tuyeres of an oval-shaped low shaft furnace; this furnace was one out of 16 iron furnaces located on elevated ground. Iron metallurgy may...
- by bellows, through bellows-powered shaft furnaces up to 1.5 m tall, to 6.5m natural-draft furnaces (i.e. furnaces designed to operate without bellows...
- A Rumford furnace is a kiln for the industrial scale production in the 19th century of calcium oxide, po****rly known as quicklime or burnt lime. It was...
- Wiktionary, the free dictionary. A bloomery is a type of metallurgical furnace once used widely for smelting iron from its oxides. The bloomery was the...
- Calcination is carried out in furnaces or reactors (sometimes referred to as kilns or calciners) of various designs including shaft furnaces, rotary kilns, multiple...
- his first experiments to obtain steel from iron ores using a small shaft furnace equipped with two electrodes capable of heating the minerals thanks...