CAJ | 학술논문

以云南晋宁磷尾矿为研究对象，观察尾矿显微照片发现不同矿物颗解离不充分，通过煅烧、破碎使得矿物颗粒分离，再进行气流分级最终实现磷尾矿中的磷回收。分别在800℃、850℃、900℃及1000℃煅烧尾矿并分析煅烧后样品显微照片，得到最佳煅烧温度。将在最佳温度下煅烧尾矿物料在频率为15 Hz条件下破碎，让不同矿物颗粒分离；再对破碎后的尾矿物料在5~40 Hz间按8种频率由大到小依次进行气流分级，对分级后各频率对应物料做XRD衍射测试，并对XRD图谱全谱拟合进行定量分析。结果表明，850℃为最佳煅烧温度，磷尾矿在此温度下煅烧产物分离彻底且磷灰石颗粒结构未垮塌；在5~25 Hz频率P2O5占总P2O5的52.78%。
이운남진저린미광위연구대상，관찰미광현미조편발현불동광물과해리불충분，통과단소、파쇄사득광물과립분리，재진행기류분급최종실현린미광중적린회수。분별재800℃、850℃、900℃급1000℃단소미광병분석단소후양품현미조편，득도최가단소온도。장재최가온도하단소미광물료재빈솔위15 Hz조건하파쇄，양불동광물과립분리；재대파쇄후적미광물료재5~40 Hz간안8충빈솔유대도소의차진행기류분급，대분급후각빈솔대응물료주XRD연사측시，병대XRD도보전보의합진행정량분석。결과표명，850℃위최가단소온도，린미광재차온도하단소산물분리철저차린회석과립결구미과탑；재5~25 Hz빈솔P2O5점총P2O5적52.78%。
The object is phosphate tailings from Jinning, Yunnan. It’s discovered that different mineral particles of tailings dissociation of insufifcient through their micrograph. Calcination and crush could separate the mineral grains, air classiifcation realized recovery of phosphorus in phosphate tailings. The tailings were calcined respectively at 800℃, 850℃, 900℃and 1000℃ and their after-calcination micrograph was analyzed to obtain the best calcination tempreture. To separate the mineral grains, calcined tailings were broken at the frequency of 15 Hz, and the brokens were air-classiifed at eight different frequencies between 5 and 40 Hz in descending. The eight classiifed materials were tested by XRD and the entire XRD spectrums were iftted for quantitative analysis. The results show that 850℃ is the best calcination tempreture, at which calcined products disintegrate completely with mineral grains form undestroyed. P2O5 collected at the range of 5~25 Hz accounts 52.78% of the total P2O5.