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The refractory material industry is one of the advantageous traditional industries in Zhengzhou. Excerpted from Zhengguan News on April 4, 2023: Henan Xinhongji Refractories Co., Ltd. is located in the production workshop of Xinmi City. There are only 18 or 9 workers in the factory building with an annual output of 100,000 tons of corundum refractory materials. The brand-new automatic brick-taking robots are under the control of the intelligent system. Running in an orderly manner, the entire production area is clean, spacious, and bright, completely overturning the impression of the traditional workshop scene of dusty faces and roaring machines. In recent years, many refractory companies like Henan Xinhongji have continued to promote intelligent transformation, strengthen R&D and innovation capabilities, and promote enterprises to move forward bravely on the road of transformation and high-quality development. As the largest refractory industry base in the country, Zhengzhou City has more than 700 refractory enterprises, including more than 300 enterprises above the designated size, mainly distributed in Xinmi, Gongyi, Dengfeng, and other counties and cities. The products are mainly based on high-grade refractory materials such as aluminum-silicon series and fused magnesia-alumina spinel, covering nine categories such as steel, cement, non-ferrous metals, glass, petrochemicals, etc.,...
Xinhongji Refractory mainly explains these common refractory bricks carefully from the material composition. 7. Zirconium-containing refractory bricks are acidic materials made of natural zircon sand (ZrSiO4). Zirconium refractory bricks are different from aluminum-silicon refractory bricks and carbon-containing refractory bricks. Good slag resistance, a low thermal expansion rate, the thermal conductivity decreases with increasing temperature, high load softening temperature, and high wear resistance. It has good thermal shock resistance and has become an important material in various industrial fields. With the development of continuous casting and vacuum degassing technology in the metallurgical industry, the application of zircon refractory bricks is becoming more and more extensive. Typical examples are zircon bricks, AZS fused bricks, AZS sintered bricks, and zircon mullite fused bricks. (1) Zircon brick, a refractory material with zirconium silicate (zircon) as the main crystal phase. The theoretical composition and structure of zircon are 67.1% ZrO2; 32.9% SiO2. Zircon bricks contain more than 90% zircon, 65-72% zirconia, and 25-33% silicon oxide. The Mohs hardness is about 7.5, and the bulk density is 3.60-4.40g/cm3. The apparent porosity is 0% to 18%. Softening temperature under load>1500℃. Zircon refractories have good corrosion resistance and thermal shock resistance to slag and molten steel and are...
Xinhongji Refractory mainly explains these common refractory bricks carefully from the material composition. 4. Corundum bricks, corundum refractory bricks are high-grade refractory bricks among high-alumina refractory bricks, and their aluminum content is above 90%. Different corundum refractory bricks can be processed according to different corundum raw materials, such as white corundum refractory bricks, brown Corundum refractory bricks, zirconium corundum refractory bricks, corundum mullite bricks, sintered corundum bricks, and fused corundum bricks, etc. (1) White corundum bricks are made of white corundum as the main raw material and are sintered at high temperatures. Brown corundum refractory bricks and zirconium corundum refractory bricks. (2) Corundum mullite bricks. When making mullite bricks, appropriate corundum is added, and processed by electric melting or sintering to produce fused corundum mullite bricks and sintered corundum mullite bricks. 5. Magnesium, magnesium-calcium, aluminum-magnesium, and magnesium-silicon are magnesia made from fused magnesia or sintered magnesia as the main raw material, adding powder and binder, and processed by electrofusion or sintering. Refractory material, magnesia has a high load softening temperature and strong resistance to alkaline slag and can be used in higher temperature working environments. Magnesia bricks can be added with other refractory raw materials as needed to produce refractory...
Xinhongji Refractory mainly explains these common refractory bricks carefully from the material composition. 1. Silicon Refractories Silicon refractories are refractory materials with silicon dioxide as the main component. Usually, the silica content is not less than 94%. It can be shaped or unshaped refractory material. The main variety is silica brick. Using silica as raw material and firing at 1350-1430°C, the main phases in silica bricks are transformed into tridymite, cristobalite, and glass. The true density must be within the range of 2.31~2.42 grams per cubic centimeter. It has the advantages of high thermal conductivity and load softening point and strong resistance to acid slag erosion. Silicon products are acidic refractory materials, which have strong resistance to acidic slag, but are easily eroded by alkaline slag and easily damaged by oxides such as potassium oxide and sodium oxide, but are resistant to oxidation such as ferrous oxide and iron oxide. The material has good resistance. Silicon bricks, a typical product in silicon products, have the characteristics of high load deformation temperature, and their load softening temperature is close to the melting point of phosphorus quartz and cristobalite (1670°C, 1713°C); silica brick masonry has good air tightness and structure Intensity, the...
In the the production workshop of Xinmi City, belong to Henan Xinhongji Refractories Material Co., Ltd.’s factory, there are only 18 or 9 workers in the factory building with an annual output of 100,000 tons of corundum refractory materials. Brand-new automatic brick-taking robots are under the control of intelligent systems.
Speaking of refractory materials, for those unfamiliar with the refractory industry, they are basically unable to understand and classify them correctly, and even more unable to make objective judgments, thereby making correct procurement and correct use.
Henan Xinhongji Refractory Material Co Ltd (Xinhongji Refractory) welcome Egypt customers to complete the business trip and the alumina-based wear-resistant bricks business in Zhengzhou city in end of October 2019.
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