Tangshan is a production of the physical and chemical porcelain white pink corundum crucible

 qq 2194687597 crucible is extremely fire-resistant material (such as clay, graphite, clay, quartz or difficult molten metallic iron, etc.) made containers or melting pot. A ceramic crucible bottom of the bowl deep. When you want to fire solid when heated, it is necessary to use a crucible. Because it better able to withstand high temperatures than glassware. Crucible using the crucible will usually cover obliquely on the crucible, was heated to prevent bounce, and allow free access of air to the oxidation reaction may be carried out. Because the bottom of the crucible is very small, generally it needs to stand in the mud on the triangle to fire direct heating. The crucible triangle frame with a positive discharge or diagonal can be, depending on the needs of the experiment can be placed on their own. After the crucible is heated not immediately placed on a cold metal table, to prevent it from being broken due to the rapid cooling.