[China Aluminum Network] High-alumina bricks are mainly used for masonry blast furnaces, hot blast stoves, electric furnace tops, blast furnaces, reverberatory furnaces, and rotary kiln linings. In addition, high-alumina bricks are widely used as refrigerated checkered bricks for open hearth furnaces, plug heads for gating systems, and nozzle bricks. However, the price of high-alumina bricks is higher than that of clay bricks, so it is not necessary to use high-alumina bricks where clay bricks can meet the requirements. Fastener Steel Pipe Type Scaffolding consists mainly of fasteners and steel tubes, also known asSteel tubular scaffold with couplers,used as a building exterior wall; it is also a type of full-frame scaffolding that can be used as an internal support. The commonly used fastener-type steel pipe scaffolds in China are made of cast iron, and their mechanical properties should conform to the "Steel Scaffold Fastener Steel Pipe Scaffolding" (GB15831-2006). The material is not lower than KT330-08. Fastener-type steel pipe scaffolding systems are also required to have fewer parts, simple installation and easy disassembly. The national standard for fasteners is 1kg/piece, and the commonly used fasteners are 1.7, 1.8 kg/piece. The national standard for steel pipes is 48 mm in outer diameter and 3.5 mm in thickness. The thickness of commonly used steel pipes is 3.0. Fastener Steel Pipe Types Scaffolding Scaffold Tube,Scaffold Board,Scaffolding Pipe,Fastener Steel Pipe Types Scaffolding Guangzhou ZG Scaffolding.co.Ltd , https://www.zgscaffolding.com
The refractoriness of high-alumina bricks is higher than that of clay bricks and semi-silica bricks, which is as high as 1750~1790°C. It is an advanced refractory material. Because of the high Al2O3 content in high-alumina products and the low amount of impurities, the formation of friable glass bodies is less, so the load softening temperature is higher than that of clay bricks, but since the mullite crystals do not form a network structure, the load-reinforced softening temperature is still not high for the silicon bricks. Therefore, the ability to resist alkaline slag is weaker than that of acid-resistant slag.