 GLASS OF LEAD (Silicate of Lead). — The silicates of lead are preferable to litharge in the treatment of substances containing no silica, or which contain earths or oxides not capable of forming a compound with oxide of lead, excepting by the aid of...  A Manual of Practical Assaying - Стр. 193авторы: John Mitchell (F.C.S.) - 1868 - Страниц: 697Полный просмотр - Подробнее о книге
 | John Mitchell (F.C.S.) - 1846 - Страниц: 450
...great number of assays. Glass of Lead, Silicate of Lead. — The silicates of lead * Annales des Mines. are preferable to litharge in the treatment of substances...fusible, a larger proportion of litharge must be added. Borates of Lead. — The borates of lead are better fluxes than the silicates when the substance to... | |
 | Campbell Morfit, Alexander Mucklé - 1849 - Страниц: 482
...Its action is that of promoting fusion, reducing an oxide and desulphurizing a sulphuret. Glass of Lead, Silicate of Lead. — The silicates of lead...fusible, a larger proportion of litharge must be added. Borateg of Lead. — The borates of lead are better fluxes than the silicates when the substance to... | |
 | Campbell Morfit, Alexander Mucklé - 1849 - Страниц: 498
...Its action is that of promoting fusion, reducing an oxide and desulphurizing a sulphuret. Glass of Lead, Silicate of Lead. — The silicates of lead...silica. It may be made by fusing 1 part of sand with 4 * Annales des Mines. parts of litharge ; if required more fusible, a larger proportion of litharge... | |
 | John Mitchell (analytical chemist.) - 1854 - Страниц: 608
...flux, and is very useful in a great number of assays. Glass of Lead (Silicate of Lead, PbO,SiO3).— The silicates of lead are preferable to litharge in...fusible, a larger proportion of litharge must be added. Borate of Lead (PbO,BO3). — The borates of lead are better fluxes than the silicates when the substance... | |
 | Campbell Morfit - 1857 - Страниц: 688
...containing no silica, or which contain earths or oxides not capable of forming a compound with the oxide of lead, excepting by the aid of silica. It...fusible, a larger proportion of litharge must be added. Borates of Lead. — The borates of lead are better fluxes than the silicates when the substance to... | |
 | Campbell Morfit, Clarence Morfit - 1857 - Страниц: 642
...Its action is that of promoting fusion, reducing an oxide, and desulphurizing a sulphuret. Glass of Lead (Silicate of Lead). — The silicates of lead...earths or oxides not capable of forming a compound with the oxide of lead, excepting by the aid of silica. It may be made by fusing 1 part of sand with 4 parts... | |
 | John Mitchell (F.C.S.) - 1868 - Страниц: 802
...litharge. The former ia the better flux, and is very useful in a great number of assays. 18. GLASS OF LEAD (Silicate of Lead). — The silicates of lead...a larger proportion of litharge must be added. 19. BORATE OF LEAD. — The borates of lead are better fluxes than the silicates when the substance to... | |
 | John Mitchell (F.C.S.) - 1868 - Страниц: 840
...litharge. The former is the better flux, and is very useful in a great number of assays. 18. GLASS OF LEAD (Silicate of Lead). — The silicates of lead...with 4 parts of litharge : if required more fusible, ;t larger proportion of litharge must be added. 19. BOEATE or LEAD. — The borates of lead are better... | |
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