轻质镁橄榄石砖的研制  

Preparation of light-weight forsterite brick

作　　者：袁广亮[1] 蒋明学[1] 

机构地区：[1]西安建筑科技大学材料科学与工程学院,陕西西安710055

出　　处：《耐火材料》2010年第5期375-376,共2页Refractories

摘　　要：以陕西商南的镁橄榄石为原料,以石油焦粉为造孔剂(其加入质量分数分别为30%、35%、40%),分别采用羧甲基纤维素、硅溶胶、MgCl2.6H2O为结合剂,以5 kN的压力成型后,分别于1 250、1 300、1 350℃保温3 h煅烧,测试烧后试样的线变化率、体积密度及耐压强度。结果表明:以MgCl2.6H2O为结合剂,加入40%质量分数的石油焦,经1 300℃保温3 h煅烧,可制备出体积密度为1.15 g.cm-3,耐压强度为3.58 MPa的轻质镁橄榄石砖。The specimens were prepared using forsterite from Shangnan of Shaanxi Province as starting material,oil coke powders（mass percent：30%,35%,and 40%,respectively） as pore-forming agents,carboxymethyl cellulose（CMC）,silica solution and MgCl2·6H2O as binder,respectively,shaping under 5 kN,then firing at 1 250,1 300 and 1 350 ℃ for 3 h,respectively.The linear change on heating,bulk density and cold crushing strength of fired specimens were determined.The results show that light-weight forsterite brick with bulk density of 1.15 g·cm-3 and cold crushing strength of 3.58 MPa can be produced using MgCl2·6H2O as binder,adding 40% oil coke,and firing at 1 300 ℃ for 3 h.

关 键 词：轻质镁橄榄石 煅烧温度 结合剂 石油焦 

分 类 号：TQ171.623[化学工程—玻璃工业]