 | Guido Küstel - 1870 - 160 էջ
...in October of last year. The nature of these inventions can be expressed as follows: Gerstenhoefer discovered that sulphurets are completely roasted...coarser material can be successfully roasted in the Gerstenhoefer furnace than in Stetefeldt's. We do not intend to enter here into a detailed description... | |
 | Rossiter Worthington Raymond - 1870 - 834 էջ
...be expressed as follows : Gerstenhofer discovered that sulphurets are completely roasted or oxidized if they fall against a current of hot air rising in a shaft, which is filled with shelves, so as to check and retard the fall of the ore particles at certain intervals.... | |
 | 1870 - 826 էջ
...be expressed as follows : Gersteuhofer discovered that sulphurets are completely roasted or oxidized if they fall against a current of hot air rising in a shaft, which is filled with shelves, so as to check and retard the fall of the ore particles at certain intervals.... | |
 | Guido Küstel - 1870 - 158 էջ
...expressed as follows : Gerstenhoefer discovered that sulphurets are completely roasted or oxidized if they fall against a current of hot air rising in a shaft, which is filled with shelves, so as to check and retard the fall of the ore particles at certain intervals.... | |
 | Edward Spon - 1872 - 404 էջ
...expressed as follows; — Gerstenhofcr discovered that sulphurets are completely roasted or oxidized if they fall against a current of hot air rising in a shaft which is filled with shelves, so as to check and retard the fall of the ore particles at certain intervals.... | |
 | Edward Spon, Oliver Byrne, Ernest Spon, Francis N. Spon - 1874 - 396 էջ
...the silver occurs, mixed with salt are completely chloridizud if they fall against a current of het air rising in a shaft with no obstructions whatever...coarser material can be successfully roasted in the Gerstenhofer furnace than in Stetefeldt•s. In the Gerstenhofer furnace only such ores can bo successfully... | |
 | 1925 - 580 էջ
...not only at Reese River but in other districts in the West. CA Stetefeldt discovered that silver ores mixed with salt are completely chloridized if they...to check or retard the fall of the ore particles. Instead of requiring from U to 8 hours to chloridize the ore, as in the reverberatory furnaces, it... | |
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Gerstenhoefer discovered that sulphurets are completely roasted or oxidized if they fall against a current of hot air rising in a shaft, which is filled with shelves, so as to check and retard the fall of the ore particles at certain intervals. Stetefeldt... 