This kind of brown aluminum oxide is fused in an electric-arc furnace by high temperature.The micro hardness is1800-2000kg/mm2.The degree of refractory is more than 1850 ℃.It's well used for produce high quality refractory products.

Guarantee Specification

Grain Size Avaiable

0-1mm,1-3mm,3-5mm,5-8mm,,10-20mm,-200mesh,-325mesh,etc.

Brown Aluminum Oxide as an important refractory material, the main service metallurgy, building materials, chemical and other high-temperature industry. The early eighties of the last century, high temperature industrial technology and equipment behind the overall, refractory varieties are relatively single, the proportion of ordinary products, for the production of high-grade brown aluminum oxide refractory products, a small proportion, when used for refractory production of brown aluminum oxide Less than 10% of the total amount. With the high-temperature industrial technological progress and the upgrading of technology and equipment, especially the metallurgical industry, blast furnaces, converters, ladle, continuous casting and other new processes to promote the adjustment of refractory varieties structure, making brown aluminum oxide refractories ratio And now the amount has reached more than 60%, brown alumium oxide refractory varieties of raw materials on the adjustment of the structure played a very important role. Over the past years, corundum also includes dense corundum, refractory used in the production and application process, there are chalking, bursting and other issues. Now, there are still many problems, for example: in the ladle with aluminum magnesium bricks, due to high impurities in brown alumium oxid (mainly iron content) lead to products in the melting hole in the torpedo tank with aluminum silicon carbide carbon brick , Corundum alumina content is low, the minimum is only 92%, leading to product intolerance erosion; in ladle with prefabricated block, the brown corundum particles powder lead to product cracks; corundum mullite brick / low creep tiles In the product, the application process mainly uses the 5-3mm or 3-1mm granule, appears the fried package condition to be more frequent; In the compound corundum and so on the product, the application process mainly uses about 200 mesh granularity powder, has the cracking situation to appear; Corundum castable used in steel products, castable after baking powder particles phenomenon; the current high content of brown corundum impurities, resulting in refractory high-temperature performance decline and so on. And brown fused alumina enterprises are also facing price increases, bauxite shortage of resources or a sharp decline in the policy environment, poor production environment, there are such and such problems. On the one hand, refractory enterprises want to improve the level of production of brown alumium oxide, product quality and provide a good crystallization, low impurity content, not beaten beaten not broken product. On the other hand, brown fused alumina production enterprises need to understand the specific indicators of refractory enterprises requirements, which is the key to the impact of indicators, how to take the production technology measures to ensure product quality. In March of the corundum production enterprise forum, the two sides of major enterprises and universities, research, design together, around the common key technical issues, common exchange and discussion, the basic sort out ideas and the next step. Refractory enterprises in the future to rationally treat the development of corundum, active and corundum enterprises to strengthen the advantages of cooperation to stabilize the quality of corundum as raw material, the development of more new varieties of refractories, and continuously meet the needs of high-temperature industry, The application of different grades of corundum raw materials will be different raw materials, production of different products, applied to different environments, so that comprehensive utilization, the formation of industrial chain, win-win development. Suitable for refractory corundum with the relevant standards and technical issues, but also industry, enterprises, universities and research institutes and relevant standards for further study.