Low Creep 70% Al2O3 Lime Kiln High Alumina Refractory Bricks

SK38 High Alumina Brick are produced with selected bauxite chamotte by advanced process and strict quality control. The main mineral components are corundum and mullite phases. Its features are excellent high temperature mechanics and chemical corrosion resistance.

If Al2O3 content is higher than 90%, it is called corundum brick. Due to different resources, national standards are not completely consistent. For example, European countries have stipulated that the lower limit of Al2O3 content for high-alumina refractories is 42%. In China, according to the content of Al2O3 in SK38 High Alumina Brick, it is usually divided into three grades: Grade I──Al2O3 content>75%; Grade II──Al2O3 content is 60～75%; Grade III──Al2O3 content is 48～60%.

The production process of SK38 High Alumina Brick and multi-clinker clay bricks are similar.

The difference is that the proportion of clinker in the ingredients is higher, which can be as high as 90-95%.

The clinker needs to be sorted and sieved to remove iron before crushing, and the firing temperature Higher, such as Ⅰ, Ⅱ high alumina bricks are generally 1500～1600℃ when fired in tunnel kiln.

Production practice in China has proved that before crushing, high-aluminum clinker is strictly sorted and classified, and stored in tiers.

The use of bauxite clinker and combined clay fine grinding method can improve product quality.

Production process:

The production methods of SK38 High Alumina Brick and clay bricks are basically the same.

Only some process parameters are different. There are also processes such as crushing → mixing → molding → drying → firing → inspection → packaging.

The compressive stress is better at low temperature, but slightly reduced at high temperature, so the stack in the kiln is less than 1 meter. The production process of high-alumina refractory bricks and multi-clinker clay bricks is similar.

The difference is that the proportion of clinker in the ingredients is higher, which can be as high as 90%-9%. The clinker needs to be sorted and sieved before crushing. The firing temperature is higher. For example, high-alumina refractory bricks such as Ⅰ and Ⅱ are generally 1500～1600℃ when fired in tunnel kiln.

Feature

• Mechanical strength
• High temperature
• Excellent resistance to spalling
• Resistant to corrosion
• Excellent load-bearing properties

Applications:

• Nonferrous Metal Furnace
• Rotary & Shaft Kiln
• Various Incinerator
• Reheating Furnace
• Permanent Lining For EAF Ladle
• General Industrial Furnace etc.

Annec is a national hi-tech company, and is accredited with ISO9001:2008 quality control system standards, ISO12001:2004 environmental control system standards, and GB/T28001-2011 HAZOPS. Annec has set up a thorough and effective management system with practical considerations for her employees and community, and is persistent in promoting employee self-value and product quality. With these efforts, Annec was awarded the prestigious 2012 Zhengzhou Mayor Quality Prize.

Annec has established a strong research and development team, represented by 11 wee known experts including prof. Zhou Gouzhi, an academician of Chinese academy of sciences, Mr. Wu Qichang, Chinese national design master of iron-making engineering. Prof. Zhang Bopeng, Inventor of the top combustion hot blast stove in Shougang Steel. The team possesses a multi-subject crossing and combination superiority in terms of metallurgy, materials science and engineering, thermal engineering, structure engineering, etc. And is beneficial to aim at the front of world steelmaking technology and continuously new technologies and new products to meet challenges of greenization, intelligence and collaboration in steelmaking industry and refractories industry.