A Practical Treatise on Metallurgy: Adapted from the Last German Edition of Prof. Kerl's Metallurgy, Volúmenes1-2Longmans, Green, and Company, 1868 |
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Página xv
... Cost of Furnaces , 427. The Skill of the Work- men , 427 . The Belgian Method of Extracting Zinc Utility of the Method , 428. Furnaces , 428. Manufacture of the Retorts , 429. Construction of the Furnaces , 431. Manipulations of the ...
... Cost of Furnaces , 427. The Skill of the Work- men , 427 . The Belgian Method of Extracting Zinc Utility of the Method , 428. Furnaces , 428. Manufacture of the Retorts , 429. Construction of the Furnaces , 431. Manipulations of the ...
Página 7
... cost and loss of lead will be occasioned in smelting ; but this preparation can only be effected with a great sacrifice of ore , especially if it contains much silver , and if the latter is derived , not from isomorphous sulphide of ...
... cost and loss of lead will be occasioned in smelting ; but this preparation can only be effected with a great sacrifice of ore , especially if it contains much silver , and if the latter is derived , not from isomorphous sulphide of ...
Página 29
... cost for fuel and labour is large . The cost per ton of ore amounts to— Wood ( 160 ton ) Labour Tools , repairs , & c . £ s . d . 8 10 O 10 0 2 71 / Total • £ 1 1.6 If the workmen produce more lead from the ore than EXPENSE OF THE ...
... cost for fuel and labour is large . The cost per ton of ore amounts to— Wood ( 160 ton ) Labour Tools , repairs , & c . £ s . d . 8 10 O 10 0 2 71 / Total • £ 1 1.6 If the workmen produce more lead from the ore than EXPENSE OF THE ...
Página 30
... cost per annum is £ 326 8s . One cubic metre of the wood employed weighs about 6 cwts . ; therefore I ton ( = 1,000 kilogr . ) occupies a space of about 3'3 cubic metres . The following improvements have been introduced in order to ...
... cost per annum is £ 326 8s . One cubic metre of the wood employed weighs about 6 cwts . ; therefore I ton ( = 1,000 kilogr . ) occupies a space of about 3'3 cubic metres . The following improvements have been introduced in order to ...
Página 31
... cost both of fuel and labour is also less . The cost for 1 ton of ore , yielding o'620 to 0650 ton of lead , amounts to- Wood ( 1'11 ton ) Labour • Tools , wear and tear , and sundries Total · .. £ s . d . 6 13 O 9 11/1 O 2 £ o 18 83 ...
... cost both of fuel and labour is also less . The cost for 1 ton of ore , yielding o'620 to 0650 ton of lead , amounts to- Wood ( 1'11 ton ) Labour • Tools , wear and tear , and sundries Total · .. £ s . d . 6 13 O 9 11/1 O 2 £ o 18 83 ...
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Términos y frases comunes
24 hours Altenau amalgam amount of silver antimony argentiferous arsenic baryta bismuth black copper blast calcined cent of copper cent of lead cent of silver charcoal charge chiefly clay coal cobalt coke condensation copper matt crucible cubic feet cupelling cupola furnaces cwts decomposed desilverised dross extraction flue fluxes formation formed Freiberg fuel furnace ends fused galena gold hearth heated impure inches iron pyrites Lautenthal lead containing lead matt lime liquation litharge loss of lead loss of metal loss of silver mercury metre mixed mixture muffles nickel oxide oxide of lead oxidised Pattinson's process precipitated production quantity quartz raw lead raw matt reduced refined residues resulting reverberatory furnaces rich lead roasting mass roasting process schlich silica silver per cwt slags smelting process sodium sodium amalgam spar speiss sulphate of lead sulphide sulphuric acid sump temperature treated tuyere u. h. Ztg Upper Hartz volatilisation whilst yield zinc blende