Hengjia low-sodium plate corundum, Na2O content is less than 0.1%, suitable for high-temperature materials, high-grade refractory materials, ultra-pure metal smelting furnace refractory products, ultra-pure casting sand, inert filler balls for pharmaceutical and chemical industries, etc.

Features
Hengjia plate-shaped corundum has the following characteristics:
Low impurity content, high refractoriness;
High volume density, good volume stability after high-temperature firing:
Low porosity and low water absorption rate can improve the erosion resistance of refractory materials under various atmospheres;
The thermal shock stability is good, which can reduce the thermal shock damage of refractory materials caused by changes in working temperature.