摘要
介绍利用氨碱法纯碱生产排放蒸氨废液制备高纯特白硅灰石粉工艺,即将澄清分离后的废清液同用氢氧化钠调整模数的液体硅酸钠反应,经配料、水合、分离、预干燥、焙烧结晶、除盐、干燥、粉碎、分级,得到高纯特白硅灰石粉;样品硅灰石含量≥98.0%、白度98.3%、长径比5;改性硅灰石粉与尼龙6以20/100的质量比配合时,材料的拉伸和弯曲强度、热变形温度分别较纯尼龙6树脂材料提高了15.35%、62.18%和13.03%。文中也结合工艺对技术产业化应用的可行性进行了探讨。
The preparation of purer and whiter wollastonite powder with waste liquid coming from ammonia alkali soda production was introduced. The reaction was accomplished with waste liquid and liquid sodium silicate adjusting modulus by sodium hydroxide. And the purer and whiter wollastonite powder was obtained by mix material,hydration,separation,beforehand drying,baking and crystal lization,salt-removing,drying,crushing and classifi cation. The powder sample's grade is ≥98.0%,whiteness is 98.3 and the slenderness...
出处
《非金属矿》
CAS
CSCD
北大核心
2007年第5期33-35,共3页
Non-Metallic Mines
关键词
纯碱
蒸氨废液
硅灰石
应用
soda distilled ammonia waste liquid wollastonite application
