 German silver, &c., can be melted with great ease, and that all the metallurgical and chemical processes that are commonly effected in platinum and porcelain crucibles can be promptly accomplished in the smallest cylinder of this furnace ; and in the...  A Manual of Practical Assaying - Стр. 76авторы: John Mitchell (F.C.S.) - 1868 - Страниц: 697Полный просмотр - Подробнее о книге
 | 1864 - Страниц: 332
...of gold, silver, copper, brass, German silver, &c., can be melted with great ease, and that all the chemical processes that are commonly effected in platinum...coal-gas frequently causes damage to the crucibles. JteqnUite Blowing- Power. — The size of the blowing machine required to develop the fusing power... | |
 | 1864 - Страниц: 654
...of gold, silver, copper, brass, German silver, &c., can be melted with great ease, and that all the chemical processes that are commonly effected in platinum...advantage, that the oil-gas is free from those sulphurous ctmpouuds, the presence of which in coal-gas frequently causes damage to the crucibles. itrquiniH-... | |
 | 1864 - Страниц: 648
...of gold, silver, copper, brass, German silver, &c., can be melted with great ease, and that all the chemical processes that are commonly effected in platinum...advantage, that the oil-gas is free from those sulphurous ctmpounds, the presence of which in coal-gas frequently causes damage to the crucibles. HI uni»! to... | |
 | 1864 - Страниц: 840
...gold, silver, copper, brass, German •ilver, &c., can be melted with great ease, and that all the chemical processes that are commonly effected in platinum and porcelain crucibles can b« promptly accomplished in the smallest cylinder of this furnace ; and, in the case of platinum vessels,... | |
 | John Mitchell (F.C.S.) - 1868 - Страниц: 840
...melt 1 Ib. of cast iron in 25 minutes, 1^ Ib. in 30 minutes, 4 Ibs. in 45 minutes, and 5 Ibs. in GO minutes. When the furnace is hot, such fusions can...causes damage to the crucibles. REQUISITE BLOWING POWEB. — The size of the blowingmachiue required to develop the fusing power of this oil-lamp furnace... | |
 | James Lukin - 1870 - Страниц: 174
...of gold, silver, copper, brass, German silver, &c., can be melted with great ease, and that all the chemical processes that are commonly effected in platinum...platinum vessels, with this special advantage, that the oil gas is free from those sulphurous compounds, the presence of which in coal gas frequently causes... | |
 | James Lukin - 1874 - Страниц: 214
...of gold, silver, copper, brass, German silver, &c., can be melted with great ease, and that all the chemical processes that are commonly effected in platinum...platinum vessels, with this special advantage, that the oil gas is free from those sulphurous compounds, the presence of which in coal gas frequently causes... | |
 | John Joseph Griffin - 1877 - Страниц: 510
...of gold, silver, copper, brass, German silver, Ac., can be melted with great ease, and that all the chemical processes that are commonly effected in platinum...crucibles. Requisite Blowing Power. — The size of the blowing machine required to develop the fusing pf-v of this Oil-Lamp Furnace depends upon the amount... | |
 | John Joseph Griffin - 1877 - Страниц: 508
...great ease, and that all tho chemical processes that are commonly effected in platinum and iorcelain crucibles can be promptly accomplished in the smallest...crucibles. Requisite Blowing Power. — The size of the blowing machine required to develop the fusing power of this Oil- Lamp Furnace depends upon the amount... | |
 | John Joseph Griffin - 1877 - Страниц: 508
...of gold, silver, copper, brass, German silver, &c., can be melted with great ease, and that all the chemical processes that are commonly effected in platinum...; and, in the case of platinum vessels, with this sj>ecial advantage, that the oil-gas is free from those sulphurous compounds, the presence of which... | |
| |
