News

E-mail：ztfhuangwenshi@163.com

Phone：+86 15625080946

TEL：+86 0752-6911339

Address：Hushan No.1 Industrial Zone, Shiwan Town, Boluo County, , Huizhou city GuangDong Province China Town/Area Code: 516127 CHINA

Industry information

Relevant knowledge on the inspection of zirconium refractory materials and other refractory materials

Author：Vincent Huang Time：2023-06-28 Hits：

Focus on mastering the concepts, calculation formulas, and definitions of porosity, bulk density, water absorption, and true density; The significance of thermal performance testing such as thermal expansion, thermal conductivity, and heat capacity; The concept of refractory materials; The testing methods and significance of the mechanical properties of refractory materials at room and high temperatures. Zirconia ceramic

$Relevant knowledge on the inspection of zirconium refractory materials and other refractory materials(图1)$

General mastery: the main raw materials of refractory materials; The type of refractory material; Classification of chemical composition and the role of various components; Classification of mineral composition and various functions; The characteristics and functions of refractory material performance inspection; Classification, testing significance, and testing methods for high-temperature performance.

Understanding: The use and development of refractory materials.

Refractory materials are inorganic non-metallic materials with a fire resistance of not less than 1580 ℃. Although the definitions stipulated by different countries are different, for example, the International Organization for Standardization (ISO) officially published international standards stipulate that“ Refractory material 4: non-metallic materials or products with a fire resistance of at least 1500 ℃ (but not excluding those containing a certain proportion of metals);, But refractory materials are used as structural materials for high-temperature kilns, furnaces, and other thermal equipment, as well as materials for industrial high-temperature containers and components, and can withstand corresponding physical and chemical changes and mechanical effects.

Most refractory materials are made from natural ores (such as refractory clay, silica, Magnesite, dolomite, etc.). Nowadays, the use of certain industrial and artificially synthesized raw materials (such as industrial alumina, silicon carbide, synthetic mullite, synthetic spinel, etc.) is also increasing.

According to the fire resistance, it can be divided into ordinary refractory products (1580-1770 ℃), advanced refractory products (1770-2000 ℃), and special refractory products (above 2000 ℃).

According to shape and size, it can be divided into standard shaped bricks, special-shaped bricks, special shaped bricks, large special-shaped bricks, as well as special products such as laboratory and industrial crucibles, vessels, and pipes.

According to the manufacturing process, it can be divided into slurry casting products, plastic formed products, semi dry pressed products, products formed by tamping powder non plastic mud, products cast from molten materials, and products sawn from rocks.

Classification of chemical mineral composition of refractory materials

Classification