CAJ | 학술논문

四川某地花岗岩板材加工废料中主要矿物为长石、石英及黑云母，采用磁选去除黑云母等含铁质矿物，并对磁选尾矿（即低铁原矿）进行HF预处理。经脱氟处理后，以H2SO4作为调整剂，十二胺作为捕收剂进行了长石和石英的浮选分离试验，其中经脱氟处理分离出的含有大量氟离子的废水返回HF预处理阶段循环使用，浮选后长石和石英脱出的浮选废水返回到浮选阶段循环使用。本试验探索了HF用量和预处理时间对长石和石英浮选分离影响等条件试验，在条件试验的基础上，进行了长石浮选开路试验。结果表明，通过HF预处理长石浮选开路试验，获得了K2O、Na2O合量分别为10.66%、9.12%的长石精矿和长石中矿，SiO2含量为99.11%的石英精矿，不仅实现了长石和石英的有效分离，而且解决了含氟废水对环境造成的污染问题，达到综合利用花岗岩板材加工废料的目的。
사천모지화강암판재가공폐료중주요광물위장석、석영급흑운모，채용자선거제흑운모등함철질광물，병대자선미광（즉저철원광）진행HF예처리。경탈불처리후，이H2SO4작위조정제，십이알작위포수제진행료장석화석영적부선분리시험，기중경탈불처리분리출적함유대량불리자적폐수반회HF예처리계단순배사용，부선후장석화석영탈출적부선폐수반회도부선계단순배사용。본시험탐색료HF용량화예처리시간대장석화석영부선분리영향등조건시험，재조건시험적기출상，진행료장석부선개로시험。결과표명，통과HF예처리장석부선개로시험，획득료K2O、Na2O합량분별위10.66%、9.12%적장석정광화장석중광，SiO2함량위99.11%적석영정광，불부실현료장석화석영적유효분리，이차해결료함불폐수대배경조성적오염문제，체도종합이용화강암판재가공폐료적목적。
To the processing waste of granite (Sichuan province in China), the main minerals are feldspar, quartz, and biotite. Biotite and other minerals containing iron are removed by magnetic separation and the magnetic tailings (low iron content materials) used hydrolfuoric acid as a pretreatment activator. The lfotation of feldspar and quartz using dodecylamine as the collector and H2SO4 as the regulator were investigated after delfuorination process. High-lfuorine content wastewater obtained by delfuorination process is returned to the step of hydrolfuoric acid pretreatment for circulation. The lfotation wastewater obtained by dehydrating feldspar and quartz after lfotation is returned to the step of lfotation for circulation. The effects of the hydrolfuoric acid dosage and pretreatment time have been investigated. The open-lfow experiment of the feldspar lfotation was determined on the basis of condition experiment. The results show that the lfotation experiment by hydrolfuoric acid pretreatment, the feldspar concentrate with the grade of 10.66%of K2O+Na2O, the feldspar middling with the grade of 9.12%of K2O+Na2O, and the quartz concentrate with the grade of 99.11%were obtained. This pretreatment method achieved the effective separation of feldspar and quartz, solved the problem of environmental pollution by the wastewater of lfuorine and achieved the comprehensive utilization of the processing waste of granite.