中温煅烧磨料是在原棕刚玉生产过程中进行中温缎烧，然后再进行炯火处理。其主要特点为:膨胀系数小、亲水性好、韧性高、强度大、制成的烧结磨具具有烧成后颜色深蓝、不起网状裂纹、无锈斑的特点，因此提高了磨具加工时的精度和磨削效果，尤其适应生产高档固结磨具。This kind of Brown Fused Alumina grains is calcined at the medium high temperature, and with the anneal treatment.lt is characterized by very lowcoefficient of linear expansion,very good hydrophilicity, good toughness and high hardness, producing the sintered grinding tools that is characterizedby deep blue color after firing, without resillage, without rust and so on. So our this kind of product increase the precision and grinding ablity of thegrinding tools in the using course. Brown Fused Alumina with medium high temperature treatment is applicable to make high quality bonded abrasives.