Fuming


Also found in: Dictionary, Thesaurus, Medical, Idioms, Wikipedia.
Related to Fuming: Fuming sulfuric acid, fuming nitric acid

Fuming

 

a method of recovering volatile components from fused slags containing zinc, lead, or tin. Slags containing lead and zinc are blasted with a coal and air mixture at 1200°–1250°C to reduce the oxides of lead and zinc; natural gas may be used in place of coal dust in the mixture. The metal vapors are removed with the gases and react with carbon dioxide to form oxidized sublimates; after being cooled in a waste-heat boiler, the sublimates are recovered in bag filters. The process is carried out in a rectangular shaft furnace equipped with 40–50 tuyeres. In order to obtain pure zinc oxide and to separate the lead oxides from it, the sublimates are roasted in a rotary furnace. When tin-bearing slags are fumed, the tin is removed as the volatile sulfide.

REFERENCE

Osnovy metallurgii, vol. 2. Moscow, 1962. Pages 415–21.

M. M. LAKERNIK

References in classic literature ?
And yet the fuming crowd did not know that, at that very moment when they were tracking the scent of one of their victims, the other, as if hurrying to meet his fate, passed, at a distance of not more than a hundred yards, behind the groups of people and the dragoons, to betake himself to the Buytenhof.
From that moment it had never shown itself to their eyes-- a disappearance all the more easily explained, as it was then passing behind the moon's invisible disc; but when it was time for it to reappear on the visible disc, one may imagine the impatience of the fuming J.
Helen disconcerted him by fuming the conversation to his wife.
Mr Verloc took another turn round the parlour, fuming.
It had not settled down into calm water again full two hours after he had been seen fuming away on the horizon at the top of the steps.
During this dialogue, John Ferrier had stood fuming in the doorway, hardly able to keep his riding-whip from the backs of his two visitors.
Deane himself was; and fuming against her sister Tulliver because she did not at once come to her for advice and help, shut herself up in her own room with Baxter's "Saints' Rest" from morning till night, denying herself to all visitors, till Mr.