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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... fuel , and also in a great measure on the quality of the ores , -whether they are in a sulphuretted or in an oxidised state ; whether they are free from foreign sulphates and earthy substances ; whether or not they are rich in silver ...
... fuel , and also in a great measure on the quality of the ores , -whether they are in a sulphuretted or in an oxidised state ; whether they are free from foreign sulphates and earthy substances ; whether or not they are rich in silver ...
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... fuel . Oxidised Lead Ores , in association with earthy sub- stances , can be dressed without difficulty , but they occasion great loss if they are associated with galena . In rare instances only are they so rich in silver that any ...
... fuel . Oxidised Lead Ores , in association with earthy sub- stances , can be dressed without difficulty , but they occasion great loss if they are associated with galena . In rare instances only are they so rich in silver that any ...
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... fuel is cheap ( French precipitating process ) . It may be subdivided into - 1 . Roasting reaction processes , which consist in the removal of the sulphur , partly by roasting and partly by the reaction of the oxidised substances in the ...
... fuel is cheap ( French precipitating process ) . It may be subdivided into - 1 . Roasting reaction processes , which consist in the removal of the sulphur , partly by roasting and partly by the reaction of the oxidised substances in the ...
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... fuel , and for this reason hearth furnaces are principally used in those countries where good coal is expensive , and wood and turf cheap . THE REVERBERATORY PROCESS is simple , very econo- mical , and occasions the least loss of metal ...
... fuel , and for this reason hearth furnaces are principally used in those countries where good coal is expensive , and wood and turf cheap . THE REVERBERATORY PROCESS is simple , very econo- mical , and occasions the least loss of metal ...
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... fuel , and time , yet if the ore is worked in reverberatory furnaces , it is still possible that local circumstances may recommend this process likewise for ores which are rich in silica . The different reverberatory processes may be ...
... fuel , and time , yet if the ore is worked in reverberatory furnaces , it is still possible that local circumstances may recommend this process likewise for ores which are rich in silica . The different reverberatory processes may be ...
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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