roasting


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Related to roasting: baking

roasting:

see cookingcooking,
the process of using heat to prepare foods for consumption.

Many common cooking methods involve the use of oil. Frying is cooking in hot oil; sautéing is cooking in a small amount of oil; stir-frying
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Roasting

 

the process of preparing ores or ore concentrates for subsequent enrichment, nodulizing, or smelting. Roasting changes the physical properties or chemical composition of ore, converts the useful components into extractable form, and removes impurities. The temperature to which the ore is heated depends on the specific ore and on the purpose of roasting.

Iron ore can be subjected to a magnetizing roast, which is usually reductive and converts iron oxides into the magnetic form for subsequent enrichment; this process is carried out in reverberatory kilns, shaft furnaces, or fluidized bed furnaces. Oxidative roasting is used to remove sulfur, carbon dioxide from carbonates, and moisture from hydrates. The extent of industrial roasting of ferrous ores is limited.

Roasting in nonferrous metallurgy sometimes uses reactive additives and can be distillative, oxidative, oxidative-reductive, calcining, sulfatizing, or chloridizing. These types of roasting serve many purposes, including the distillative removal of useful components in the form of gaseous products, the conversion of such components into oxides, the removal of carbon dioxide from carbonates, the oxidation of sulfides to sulfates, and the formation of readily soluble or volatile chlorides. Nonferrous ores are roasted in different kinds of furnaces, including hearth smelting furnaces, tube furnaces, and fluidized bed furnaces.

E. N. IARKHO

References in classic literature ?
They soon appeared satisfied and returned (with the exception of one, who remained at the shore) to their fire, at which the carcass of a goat was roasting.
All day long the atmosphere of the house is loaded with the savour of roasting meats till it groans again, yard and all; but by night they sleep on their well made bedsteads, each with his own wife between the blankets.
Your head cook is always baking, and stewing, and roasting, and rolling out paste, and contriving one dish or another, which he imagines may be to my liking.
They flayed the carcass, made it ready, and divided it into joints; these they cut carefully up into smaller pieces, putting them on the spits, roasting them sufficiently, and then drawing them off.
The Moravians have teached ye better, I hope; the Lord preserve me if the powder hasn’t flashed atween his legs, and the skin of his back is roasting.
The hunters made great havoc among the buffaloes, and brought in quantities of meat; the voyageurs busied themselves about the fires, roasting and stewing for present purposes, or drying provisions for the journey; the pack-horses, eased of their burdens, rolled on the grass, or grazed at large about the ample pasture; those of the party who had no call upon their services, indulged in the luxury of perfect relaxation, and the camp presented a picture of rude feasting and revelry, of mingled bustle and repose, characteristic of a halt in a fine hunting country.
It arrived upon Christmas morning, in company with a good fat goose, which is, I have no doubt, roasting at this moment in front of Peterson's fire.
That the germs of it could hardly have survived the original roasting was, he declared, fairly certain.
On the stove are a couple of trivets for the pots and kettles which it is Grandfather Smallweed's usual occupation to watch, and projecting from the chimney-piece between them is a sort of brass gallows for roasting, which he also superintends when it is in action.
The quarter-deck now staged a lurid scene: that blazing trap-door in its midst; and each man there a naked demon madly working to save his roasting skin.
They say that by electro-magnetism your salad shall be grown from the seed whilst your fowl is roasting for dinner; it is a symbol of our modern aims and endeavors, of our condensation and acceleration of objects;--but nothing is gained; nature cannot be cheated; man's life is but seventy salads long, grow they swift or grow they slow.
Inside the mouth of this gallery are stacks of gold quartz piled up ready for roasting, which shows that the workers, whoever they were, must have left in a hurry.