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 17
... residue depends upon the nature of the foreign substances contained in the lead ore . The longer the reactions can be ... residues for the extraction of the remaining lead depends on this . In the second period , foreign substances ...
... residue depends upon the nature of the foreign substances contained in the lead ore . The longer the reactions can be ... residues for the extraction of the remaining lead depends on this . In the second period , foreign substances ...
Página 20
... residue of the slags . ) At the end of the second period there remains in the furnace a more or less molten mixture ... residues contain accordingly either an excess of oxidised ( Carinthian and French processes ) or of sulphuretted sub ...
... residue of the slags . ) At the end of the second period there remains in the furnace a more or less molten mixture ... residues contain accordingly either an excess of oxidised ( Carinthian and French processes ) or of sulphuretted sub ...
Página 21
... residues contain much oxide of zinc , part of the zinc becomes reduced and vola- tilised , lead and silver going along with it . Burned lime , in form of powder , may be recommended an admixture for the residues , if they are richer in ...
... residues contain much oxide of zinc , part of the zinc becomes reduced and vola- tilised , lead and silver going along with it . Burned lime , in form of powder , may be recommended an admixture for the residues , if they are richer in ...
Página 22
... residues , and when working galena poor in silver , lime or coal may be used according to whether the residue contains more oxidised or sulphuretted substances . This , again , depends on the original impurities in the ore , and on its ...
... residues , and when working galena poor in silver , lime or coal may be used according to whether the residue contains more oxidised or sulphuretted substances . This , again , depends on the original impurities in the ore , and on its ...
Página 23
... residues from the reverberatory furnaces at Bleiberg , analysed by Ferjent- sik : Pb . Zn . Fe . MgO CaO . S. I. 69.6 I'5 6'3 5'5 16.1 2. 39'7 18.1 I'7 5'0 10'5 24'5 3. 45'5 15'9 0'7 6.8 8.7 22.3 4. 32.6 18.9 4'5 I'7 13'9 28.3 5. 21'7 ...
... residues from the reverberatory furnaces at Bleiberg , analysed by Ferjent- sik : Pb . Zn . Fe . MgO CaO . S. I. 69.6 I'5 6'3 5'5 16.1 2. 39'7 18.1 I'7 5'0 10'5 24'5 3. 45'5 15'9 0'7 6.8 8.7 22.3 4. 32.6 18.9 4'5 I'7 13'9 28.3 5. 21'7 ...
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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