Introduction of zirconium corundum
Zirconium corundum based on alumina, zirconia raw material above 2000 ℃ high temperature hitches in electric arc furnace smelting. Zirconium corundum chemical ingredients: zircon corundum main crystal phase for alpha Al2O3, phase for the baddeleyite, there is a small amount of glass phase. Zirconium corundum, zirconium corundum physical properties: zircon corundum and tough, compact structure, high strength, good thermal shock resistance, generally in taupe. Shizuishan Jin Lin zircon corundum refractory co., LTD., production products high refractoriness, wear-resisting, scouring resistance, good slag resistance, erosion resistance and adhesion, can decrease the porosity of castings, improve roughness of casting and the quality of the casting, good self-sharpening, grinding performance.
Zirconium corundum, according to the content of ZrO2 is divided into: low zirconium corundum (ZrO2 10% ~ 15%), the zircon corundum (ZrO2 25%), high zircon corundum (ZrO2 40%).
Zirconium corundum smelting process
Jin Lin zircon corundum based on aluminum, zirconium material is given priority to, after 2250 ℃ high temperature smelting, to mark the special processing technology and through forming, high quality, hard, tight structure, refractory material in the material such as iron and steel industry. Zirconium corundum is generally in the dumping of smelting furnace and exile on the furnace. The smelting process and brown fused alumina is roughly similar, but due to the burden of SiO2 and other impurities content is higher, furnace fluid viscosity increase, the operation is difficult. Furthermore smelting process generally adopt a thin layer of homework, facilitate the volatilization of impurities.
Zirconium corundum purposes
Jin Lin zircon corundum has good toughness and strength, suitable for all kinds of grinding tool, especially the weight of grinding wheel and cutting wheel manufacturing. Specially used for processing of stainless steel, carbon steel and alloy steel etc. Zirconium corundum by about 25% of the fused zirconia and alumina hitches in electric arc furnace special special cooling process smelting and manufacturing. Main applications: steel billet surface grinding, casting surface grinding, steel bar cutting and sanding, etc. AZ25 mainly divided into AZF25 and AZS25 two kinds.
Zirconium corundum melt erosion resistance is good, as a kind of advanced abrasive, can manufacture high-performance heavy-duty grinding wheel, for steel, cast iron parts, heat-resistant steel, and various kinds of alloy material has good grinding effect; In addition, zirconium corundum or a high-level refractory raw material, is used for making high performance of sliding nozzle and submerged nozzle ideal material, can also be used to make glass furnace using zirconium corundum brick.
