高纯石英砂浮选工艺与药剂研究进展

Research progress on flotation technology and reagents for high-purity quartz sand

高纯石英砂是半导体、光纤通信、光伏、航空航天等高新技术产业的基础原料,战略地位十分重要,直接关系到国家高新技术产业的健康可持续发展。作为高纯石英砂提纯工序中的关键一步,浮选技术的发展直接影响高纯石英砂原料的品质。对比分析了“有氟有酸”法、“无氟有酸”法以及“无氟无酸法”等主流浮选技术的优缺点,系统介绍了抑制剂、pH调整剂、活化剂等高纯石英砂浮选药剂的研究进展。在总结传统和新型合成药剂特点的基础上,阐述了目前高纯石英砂浮选行业面临的问题。为了突破国外高纯石英的垄断与封锁,尽可能降低浮选对环境的不利影响,发展环境友好型高纯石英砂浮选技术和开发绿色高效高纯石英浮选药剂将是未来的研究重点。

High purity quartz sand is fundamental raw material for high-tech industries such as semiconductors,fiber optic communication,photovoltaics,and aerospace.Its strategic position is very important and directly related to the healthy and sustainable development of the national high-tech industry.As a crucial step in the purification process of high-purity quartz sand,the development of flotation technology directly affects the quality of high-purity quartz sand raw materials.The comparative analysis was conducted on the advantages and disadvantages of mainstream flotation technologies such as"fluorinated acid"method,"fluorinated acid"method,and"fluorinated acid free"method.The research progress of high-purity quartz sand flotation reagents such as inhibitors,pH adjusters,and activators was systematically introduced.On the basis of summarizing the characteristics of traditional and new synthetic reagents,the problems faced by the current high-purity quartz sand flotation industry were elaborated.In order to break through the monopoly and blockade of foreign high-purity quartz,and minimize the adverse impact of flotation on the environment,the development of environmentally friendly high-purity quartz sand flotation technology and the development of green,efficient,and high-purity quartz flotation reagents will be the future research focus.