Your Location:   Home > News & Events >
News & Events

sunrise mullite bricks -- the best refractory bricks

Date:2019-01-14 17:25 | From:Zhengzhou Sunrise Refractory | Author:admin
Zhengzhou sunrise Refractories is the best manufacturer and supplier of mullite insulation bricks in China. We have our own factories, choose the best quality raw materials, and use the most advanced equipment to produce mullite insulation bricks. The mullite brick produced by sunrise refractory refers to a high-alumina refractory material with mullite as the main phase. Generally, the alumina content is between 65% and 75%. Mineral composition In addition to mullite, sunrise refractory mullite bricks contain a small amount of glass phase and cristobalite, and a higher amount of alumina also contains a small amount of corundum.
Why is mullite brick called refractory brick? Because the mullite brick of sunrise refractory material has high refractoriness, the highest temperature can reach above 1790°C, the load softening start temperature is 1600~1700°C, the normal temperature compressive strength is 70~260MPa, and the thermal shock resistance is good. Our mullite bricks are made of sintered mullite bricks and fused mullite bricks due to different manufacturing processes.
The sintered mullite brick is made of high alumina bauxite clinker as a main raw material, and a small amount of clay or raw bauxite is added as a binder, which is formed by molding and firing. The electric melting mullite brick is made of high alumina, industrial alumina and refractory clay, and is added with charcoal or coke fine particles as a reducing agent, and is formed by reduction electrofusion after molding. The crystal of fused mullite is larger than sintered mullite, and the thermal shock resistance is better than that of sintered products. Their high temperature performance depends mainly on the alumina content and the uniformity of the mullite phase and glass distribution. Customers can choose to purchase fused mullite or sintered mullite according to their actual situation.

No matter which mullite brick or other refractory brick you decide, we will make you satisfied. If you have any questions, please call.
If you're interested in the product, please submit your requirements and contacts and then we will contact you in one day. We promise that all your informations won't be leaked to anyone.