 All of the iron ores will in burning change to the form of oxide, provided the clay is not vitrified, and so affect the color of the burned material ; if vitrification occurs, the iron oxide enters into the formation of silicates of complex composition....  Final Report - Seite 57von New Jersey Geological Survey, New Jersey. State Geologist - 1904Vollansicht - Über dieses Buch
 | New Jersey Geological Survey - 1904 - 708 Seiten
...noncrystalline form, and forms a coating on the surface of the grains. Coloring action of iron oxide on burned clay. — All of the iron ores will in burning...from iron oxide burns white. If a small quantity, say 1 per cent., is present, a slightly yellowish tinge is imparted to the burned material, but an increase... | |
 | Virginia. Division of Mineral Resources - 1905 - 682 Seiten
...of the iron ores will, in burning, change to the form of oxide, provided the clay is not completely vitrified, and so affect the color of the burned material...however, depend on : 1st, the amount of iron in the clay ; 3d, the temperature of burning ; 3d. condition of the iron oxide ; and 4th, the condition of the... | |
 | Heinrich Ries - 1906 - 690 Seiten
...of the iron ores will, in burning, change to the form of oxide, provided the clay is not completely vitrified, and so affect the color of the burned material;...from iron oxide burns white. If a small quantity, say 1 per cent., is present, a slightly yellowish tinge is imparted to the burned material, but an increase... | |
 | HEINRICH. RIES - 1908 - 612 Seiten
...provided a sufficient supply of oxygen is able to enter the pores of the clay before it is vitrified; if vitrification occurs the iron oxide enters into...shade produced by the iron will, however, depend on first, the amount of iron in the clay; second, the temperature of burning; third, condition of the... | |
 | Solon Shedd - 1910 - 466 Seiten
...be formed. According to Ries,j the color and depth of shade produced by iron in burning clays will depend on, "1st, the amount of iron in the clay; 2d,...condition of the iron oxide, and 4th, the condition of kiln atmosphere." Clay perfectly free from iron will burn white. When a very small amount of iron is... | |
 | John Johnston O'Neill - 1914 - 392 Seiten
...provided a sufficient supply of oxygen is able to enter the pores of the clay before it is vitrified ; if vitrification occurs, the iron oxide enters into...formation of silicates of complex composition. The colour and depth of shade produced by the iron will, however, depend on: (1) the amount of iron in... | |
 | 1914 - 460 Seiten
...provided a sufficient supply of oxygen is able to enter the pores of the clay before it is vitrified ; if vitrification occurs, the iron oxide enters into...formation of silicates of complex composition. The colour and depth of shade produced by the iron will, however, depend on: (1) the amount of iron in... | |
 | 1916 - 842 Seiten
...provided a sufficient supply of oxygen is able to enter the pores of the clay before it is vitrified; if vitrification occurs, the iron oxide enters into...shade produced by the iron will, however, depend on: first, the amount of iron in the clay; second, the temperature of burning; third, condition of the... | |
 | 1916 - 854 Seiten
...provided a sufficient supply of oxygen is able to enter the pores of the clay before it is vitrified; if vitrification occurs, the iron oxide enters into...shade produced by the iron will, however, depend on: first, the amount of iron in the clay; second, the temperature of burning; third, condition of the... | |
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