The easy Introduction of Ceramic Color Pigment know as ruby

Chromium corundum is mainly composed of|??¨¬?¡§|-Al2O3-Cr2O3 strong solution, and also the secondary one is fire-resistance brick with little amount of spinel (or no spinel) and Chromium Oxide, that is only 1%-30% of all. The chromium corundum is two kinds, 1 casting chromium corundum brick and also the other sintering chromium corundum brick. Usually, the chromium corundum brick is sintering chromium corundum brick. This sort of brick is produced of|??¨¬?¡§|-Al2O3, adding proper quantity of powder of Chromium Oxide and chromium corundum below the condition of higher temperature. The quantity of Chromium Oxide in sintering chromium corundum brick is generally less than that in casting 1. An additional technique to produce the chromium corundum brick is to adopt slip casting that the workers mix the|??¨¬?¡§|-Al2O3 powder with Chromium Oxide uniformly, and add peptizer and organic binder until the state is thickened slurry, meanwhile, they ought to add some chromium corundum into the thickened slurry. Following that the adobe can be formed and after that sintered. (Chrome Oxide Green Refractory  )

The chromium corundum brick is used in many fields such as the glass furnace lining, cover brick for drawing glass flow hole and backing for hot metal pretreatment gear, Waste incinerators, and coal-water slurry gasifiers.

To inform the truth, chromium corundum can be noticed in many exhibitions simply because red corundum is mainly composed of |??¨¬?¡§|- alumina, also known as chromium corundum, ruby. Now there's most artificial red corundum on the market. French chemist Framy fused the raw material like pure aluminum powder, potassium carbonate, barium fluoride and potassium dichromate for 8days in higher temperature in crucibles to acquire small particles of ruby crystals, that is the beginning of the artificial ruby. In 1900, scientists have utilized melt aluminum oxide with adding a small quantity of Ceramic Color Pigment, Cr2O3, in proportion of 0.7%, to make out of 2g ~~ 4g ruby. Now, it has been able to manufacture rubies and sapphires large sufficient to reach 10g. There was some high-quality artificial ruby in Geneva and Switzerland in 1885. It was stated that the particles of ruby with potassium dichromate that may increase the red effect, when the mixed items had been sintered in higher temperature, the quality was the same as all-natural ruby. However, that the artificial ruby could be produced in large mode must be contributed to French chemist Verneuil. He produced the artificial ruby officially in 1904, which is the milestone in the manufacture history of ruby, chromium corundum. Because of the large scale of production, Chrome Oxide Green Cr2O3 Pigment  gradually getting into the luxury fields.