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 5
... mixed up with clay ; in the clay schists of the new red sandstone ( Scheiden ) ; it is furthermore found in different parts of Spain , as , for instance , in the province of Santander , mixed with calamine , clay , limestone , and ...
... mixed up with clay ; in the clay schists of the new red sandstone ( Scheiden ) ; it is furthermore found in different parts of Spain , as , for instance , in the province of Santander , mixed with calamine , clay , limestone , and ...
Página 18
... mixed , almost pre- vents the reactions . Zinc Blende , nearly all of which is converted by the roast- ing process into oxide and sulphate of zinc , acts advantage- ously in small quantity . By rendering the charge less fusible , a more ...
... mixed , almost pre- vents the reactions . Zinc Blende , nearly all of which is converted by the roast- ing process into oxide and sulphate of zinc , acts advantage- ously in small quantity . By rendering the charge less fusible , a more ...
Página 29
... mixed together in the bright red - hot furnace , and the heat is kept up for an hour . The mass is continually being worked up , and about 44 lbs . of less pure lead ( press - lead ) is reduced , chiefly by the reaction of the coal ...
... mixed together in the bright red - hot furnace , and the heat is kept up for an hour . The mass is continually being worked up , and about 44 lbs . of less pure lead ( press - lead ) is reduced , chiefly by the reaction of the coal ...
Página 37
... mixed with ores free from silica ; and ores poor in silver are mixed with ores rich in silver . The normal process can be properly carried on only with rich ( 70 to 75 per cent ) and calcareous ores . Smelting the Ore . - The English ...
... mixed with ores free from silica ; and ores poor in silver are mixed with ores rich in silver . The normal process can be properly carried on only with rich ( 70 to 75 per cent ) and calcareous ores . Smelting the Ore . - The English ...
Página 44
... mixed up with the charges for the hearth furnace . The poor slags are either run into water and separated as before described , or they are run into iron pots , and smelted again in Castilian furnaces . The Castilian furnace is a ...
... mixed up with the charges for the hearth furnace . The poor slags are either run into water and separated as before described , or they are run into iron pots , and smelted again in Castilian furnaces . The Castilian furnace is a ...
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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