The British Association: Section B—Chemical Science


    On a Process for Utilising Waste Products aud Economising Fuel in the Extraction of Copper, by J. Dixon (Adelaide, South Australia).—This paper contains an account of a process for extracting copper from sulphurous ores, in which the heat generated by the combination of the oxygen of the air with the sulphur of the ore is utilised for the smelting of the ore. This process is based upon experiments, which, although the author regards as incomplete, show (1) that the charge grows visibly hotter by simply blowing air through it; (2) that the melting of the raw ore or regulus and its reduction can be carried on in the same furnace; (3) that if the ore is in lumps, and fed at the top whilst the air is admitted by the side, a practically clean slagg can be obtained; but if added in a coarse powder, as it is generally found in the market, it either blows out again or chokes the furnace; (4) that a rough copper of about 96 per cent, pure metal can be obtained by the successful working of this process.

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    The British Association: Section B—Chemical Science. Nature 24, 467–470 (1881).

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