An Introduction to the Study of Metallurgy
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The charge in twenty-four hours is, 1500 cwt. litharge, 450 cwt. lead-slags, 50 cwt. slags from a previous smelting, 130 cwt. coke. The products are, (1) a variety of lead, which, according to its purity, is either first liquated and then refined, or is taken to the Pattinson pots, and (2) a slag containing 10 per cent, of lead. Part of this slag goes to the next charge, and part to the first ore and slag smelting.
Liquating the Impure Lead. — This is done at Freiberg on the incHned bed of a re...verberatory furnace, 500 cwt. .being treated daily. The copper, with some lead, remains solid in the form of liquation-residues. The lead, before the liquation, contains 0.5 per cent, copper, afterwards it still retains 0.07 per cent.
The residues are about 5 per cent, of the total lead ; they consist principally of lead with 15 to 18 per cent, of copper, and are added to the slag-smelting in the Pilz furnace.
The scum from the Pattinson pots is also treated in this reverberatory, in admixture with lignite.
What to read after An Introduction to the Study of Metallurgy?
You can find similar books in the "Read Also" column, or choose other free books by Roberts-Austen, W. C. (William Chandler), Sir, 1843-1902 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The charge in twenty-four hours is, 1500 cwt. litharge, 450 cwt. lead-slags, 50 cwt. slags from a previous smelting, 130 cwt. coke. The products are, (1) a variety of lead, which, according to its purity, is either first liquated and then refined, or is taken to the Pattinson pots, and (2) a slag containing 10 per cent, of lead. Part of this slag goes to the next charge, and part to the first ore and slag smelting.
Liquating the Impure Lead. — This is done at Freiberg on the incHned bed of a re...verberatory furnace, 500 cwt. .being treated daily. The copper, with some lead, remains solid in the form of liquation-residues. The lead, before the liquation, contains 0.5 per cent, copper, afterwards it still retains 0.07 per cent.
The residues are about 5 per cent, of the total lead ; they consist principally of lead with 15 to 18 per cent, of copper, and are added to the slag-smelting in the Pilz furnace.
The scum from the Pattinson pots is also treated in this reverberatory, in admixture with lignite.
What to read after An Introduction to the Study of Metallurgy?
You can find similar books in the "Read Also" column, or choose other free books by Roberts-Austen, W. C. (William Chandler), Sir, 1843-1902 to read onlineMoreLess
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