摘要
在以程潮铁尾矿为主要原料制得熔块的基础上,通过正交试验研究了熔块粉添加方解石、高岭土和石英等陶瓷原料对熔块釉性能的影响,确定了获得最佳性能的纯正熔块黑釉所需添加方解石、高岭土和石英的量;对影响釉面质量的因素和熔块釉呈色机理进行了分析。试验研究表明:方解石、高岭土、石英的添加量分别占熔块釉原料总质量的7.5%、4%和6%时釉面综合效果最佳,光吸收率为97%、光泽度为78%、莫氏硬度为6.1,符合GB/T5003—1999标准要求。方解石具有降低釉的高温黏度、提高釉面平整度与光泽度、通过降低釉的表面张力来增强坯与釉结合力的作用;高岭土具有提高釉浆悬浮性和釉与坯浸润性的效果;石英则可以提高釉的强度和硬度,且利于均匀发色。熔块黑釉呈黑色主要是由于其生成了分布均匀且细小的磁铁矿、钙铁辉石等黑色晶体。以程潮铁尾矿为主要原料生产纯正黑釉既是二次资源的高效利用,也可创造可观的经济效益。
The properties of the frit glaze affected by ceramic raw materials such as calcite,kaolin,quartz has been dem-onstrated by optimal experiments using Chengchao iron ore tailing as main raw material. Optimum dosages of calcite,kaolin and quartz are determined to obtain pure black fritted glaze. Influences on the quality of glaze surface and the colouration mecha-nism of fritted glaze also have been analyzed. Results shows that when the dosage of calcite,kaolin,quartz is 7. 5%,4%,6%respectively of all fritted glaze materials,the glaze has the best comprehensive performance for absorption rate of 97%,glossi-ness of 78%,Moh′s hardness of 6. 1,which fits the requirements of GB/T 5003-1999 standard. Calcite plays critical roles in reducing the high temperature viscosity,improving smoothness and glossiness of the glaze surface,decreasing the glaze tension to increase the adhesion between green body and glaze surface. Caolin can increase the suspension property of glaze slurry and the wettability between green body and glaze surface. Quartz can increase the strength and hardness of glaze and help to devel-op color evenly. The black color appeared in fritted black glaze is caused by the generation of tiny dark crystals like magnetite and hedenbergite,which are distributed evenly in glaze. Utilization of Chengchao iron ore tailings as secondary resources to pre-pare pure black fritted glaze can produce considerable economic benefits.
出处
《金属矿山》
CAS
北大核心
2015年第1期171-175,共5页
Metal Mine
关键词
程潮铁尾矿
熔块
黑釉
光吸收率
光泽度
莫氏硬度
呈色机理
Chengchao iron ore tailings
Fritted glaze
Black glaze
Absorption rate
Glossiness
Moh′s hardness
Colora-tion mechanism
