含氟二氧化硅粉体中游离氟的固定研究  

Fixation of free-fluorine in fluorine-containing silicon dioxide powder

作　　者：赵盈 刘松林 王凤霞 李白玉 吴京兴 翟耀 石劲鹏 刘飞 黄鸿 ZHAO Ying;LIU Songlin;WANG Fengxia;LI Baiyu;WU Jingxing;ZHAI Yao;SHI Jinpeng;LIU Fei;HUANG Hong(Wengfu(Group)Co.,Ltd.,Guiyang 550000,China;National Key Laboratory for Efficient and Comprehensive Utilization of Medium and Low Grade Phosphate Rock and Its Associated Resources,Guiyang 550016,China;Guizhou Jiaruntianze New Material(Group)Co.,Ltd.,Guiyang 550016,China)

机构地区：[1]瓮福(集团)有限责任公司,贵州贵阳550000 [2]中低品位磷矿及共伴生资源高效利用国家重点实验室,贵州贵阳550016 [3]贵州佳润天泽新材料有限公司,贵州贵阳550016

出　　处：《生态产业科学与磷氟工程》2024年第6期68-70,共3页Eco-industry Science & Phosphorus Fluorine Engineering

基　　金：贵州省科技计划项目“磷矿伴生资源高效回收及利用技术创新研究”(黔科中引地[2022]4010);贵州省科技计划项目“利用含氟二氧化硅生产涂料改性材料的关键技术研究”(黔科合支撑[2023]一般407)。

摘　　要：含氟二氧化硅粉体废弃物处置不当会存在潜在的环境污染风险,同时造成硅资源的浪费。对含氟二氧化硅粉体中游离氟的固定进行研究,主要探究去离子水、钙离子交换剂用量对含氟二氧化硅粉体悬浮液pH及游离氟固定效果的影响。实验结果表明,在温度75℃、搅拌转速200 r/min、反应时间30 min、去离子水加入量200 mL、钙离子交换剂用量12 g时,含氟二氧化硅粉体悬浮液pH可达6.16;加入钙离子交换剂改性后含氟二氧化硅粉体中游离氟占比明显减少,在白炭黑与防锈颜料体系有着巨大的应用潜力。Improper disposal of fluorine-containing silicon dioxide powder will lead to potential environmental pollution risk and waste of silicon resources.The fixation of free-fluorine in fluorine-containing silicon dioxide powder is studied,and the effect of water and calcium ion exchanger amount on the pH value and fixation effect of fluorine in fluorine-containing silicon dioxide powder solution is mainly investigated.The experimental results show that the pH of the fluorine-containing silicon dioxide powder solution can reach 6.16 when the temperature is 75℃,the stirring speed is 200 r/min,the reaction time is 30 min,and the amount of water and calcium ion exchanger are 200 mL and 12 g.The proportion of free-fluorine in the modified fluorine-containing silicon dioxide powder are 200 mL and significantly reduced,which has great application potential in the white carbon black and anti-rust pigment system.

关 键 词：含氟二氧化硅粉体 固体废弃物 氟固定 钙离子交换剂 

分 类 号：X781[环境科学与工程—环境工程]