以高钛型高炉渣提钛后尾渣为结合剂的刚玉浇注料性能研究  

Study on the Performance of Corundum Castables Binded by High Titanium Blast Furnace after Extracting Titanium

作　　者：汪朋 韩兵强[2] 柯昌明[2] 李楠[2] 

机构地区：[1]江苏省冶金设计院有限公司,江苏南京210000 [2]武汉科技大学省部共建耐火材料与冶金国家重点实验室,湖北武汉430081

出　　处：《钢铁钒钛》2016年第4期76-82,共7页Iron Steel Vanadium Titanium

基　　金："十一五"科技支撑项目(2006BAB02B02)

摘　　要：利用等离子熔融技术提取硅钛合金后的缓冷尾渣为结合剂,以电熔棕刚玉颗粒、电熔白刚玉细粉(≤0.088mm)、α-Al_2O_3微粉、SiO_2微粉为主要原料,研究缓冷尾渣加入量(0、2%、4%、6%、8%)对刚玉基浇注料性能的影响。试验表明:1随着缓冷尾渣加入量的增加,浇注料的需水量增大,常温和高温烧后强度逐步增强,中温强度则逐步降低;2加入量过多不利于其热震性能和高温抗折强度的发展;3在抗渣侵蚀性能方面,加入6%缓冷尾渣试样的侵蚀指数最大,加入量4%缓冷尾渣与以4%Secar71水泥结合的浇注料,抗侵蚀性能接近;4在刚玉浇注料中缓冷尾渣的加入量4%左右为宜,不宜超过6%。The slow cooling tailings produced in the process of silicon-titanium alloy extraction from high titanium blast slags by plasma fusion technique were used as castables binders, and the effects of the slow cooling tailings addition （ wb ：0percent,2 percent,4 percent,6 percent and 8 percent） on the properties of corundum castables were investigated with brown fused alumina particles （ 5 - 3 mm, 3 - 1 mm, 1 - 0 mm） , fine powder of white fused alumina（ ≤0. 088 mm）, ultra-fine α-alumina, and micro silica as start- ing materaials. The results show that ：①the modulus of flexural and compressive strength ually increase, however, those of castables tailings increasing;②excess addition of slow water requirements of castables get more, the cold and hot of castables treated at 110 ℃ and 1 600 ℃ respectively grad- treated at 1 100 ℃ decrease when addition of slow cooling cooling tailings are harmful for the thermal shock resistances and high temperature flexural strengths; ③regarding the slag corrosion resistance, the erosion index of sample with 6% slow cooling tailings is highest, and the erosion index of sample with 4% slow cooling tailings is close to the Secar71 cement castables sample;④the suitable addition of the slow cooling tailings for the corundum castables is about 4 percent, and not more than 6 percent.

关 键 词：高钛型高炉渣 缓冷尾渣 刚玉浇注料 强度 抗渣侵蚀性能 

分 类 号：TQ175.1[化学工程—硅酸盐工业]