本文選題：鉛鋅尾礦 + 濃密機溢流�。� 參考：《武漢科技大學》2015年碩士論文

【摘要】：本研究針對凡口鉛鋅礦平均粒徑為10μm的極細粒級黃鐵礦開展分選研究。研究發(fā)現(xiàn)凡口鉛鋅礦鉛鋅尾礦總量13%~20%的極細粒硫資源從濃密機溢流中流失，經(jīng)Ф53m濃密機濃縮后底流直接送至尾礦庫。試驗研究了對這部分硫資源的最佳回收工藝，最終確定了Ф53m濃密機底流經(jīng)脫泥與原高硫給礦合并進入原選硫工藝的新流程，對比舊流程不僅可提高總硫回收率，也可減少對尾礦庫的輸送量。 工藝礦物學研究顯示，試樣中可供選礦富集回收的主要元素是鐵和硫，品位分別為23.41%、25.04%；金屬礦物主要是黃鐵礦，次為方鉛礦、閃鋅礦，脈石礦物以石英、方解石和絹云母為主。黃鐵礦呈單體產(chǎn)出占94.93%。 浮選試驗研究顯示，極細粒級全粒級浮選閉路試驗硫精礦品位47.05%，回收率84.36%。經(jīng)旋流器脫泥后浮選，粗選硫精礦品位44.45%，回收率57.67%。沉砂和原高硫給礦按干礦質(zhì)量比2:8混合進行浮選，粗選硫精礦品位43.25%，回收率58.15%�；旌系V的浮選結(jié)果與原工藝硫給礦單獨浮選指標相近，推測混合浮選工藝流程在工業(yè)生產(chǎn)上具有可行性。 工業(yè)試驗研究顯示，混合礦的浮選新工藝總硫精礦品位達到47%以上，對比舊工藝回收率提高了5.22%。新工藝具有投資少，，見效快的效果。新工藝每年可多生產(chǎn)6.73萬噸合格的高硫精礦，除去選礦成本，每年可增加923.7萬元收入。
[Abstract]:In this study, the study was conducted on the fine fine-grained pyrite with an average diameter of 10 mu m in Fankou Lead zinc mine. The study found that the extremely fine sulfur resources of 13%~20% of the total amount of lead and zinc tailings in Fankou Lead zinc mine were lost from the overflow of the thickener, and the bottom current was directly sent to the tailings reservoir after concentrated 53m thickener. The best recovery of this part of the sulfur resource was tested and studied. The process has finally determined the new process of merging the bottom flow of the 53m thickener through degash and the original high sulphur entry into the primary sulfur separation process. Compared to the old process, the total sulfur recovery rate can be improved and the transportation amount of the tailings can be reduced.
The technical mineralogical study shows that iron and sulfur are the main elements for beneficiation and recovery in the sample, the grade is 23.41%, 25.04%, the metal minerals are mainly pyrite, the second is galena, the sphalerite and the gangue minerals are mainly quartz, calcite and sericite, and the pyrite is 94.93%..
The flotation test shows that the grade of sulphur concentrate is 47.05%, the recovery rate is 47.05%, the recovery rate is 44.45%, the recovery rate is 44.45%, the recovery rate is 57.67%. and the original high sulfur content is mixed with 2:8, and the grade of sulphur concentrate is 43.25%, and the recovery rate of 58.15%. mixed ore floats. The results are similar to those of the original process, and it is assumed that the mixed flotation process is feasible in industrial production.
The industrial test study shows that the grade of total sulphur concentrate of the new flotation process of the mixed ore is above 47%. Compared with the old technology, the new technology of 5.22%. new technology has the effect of less investment and faster effect. The new process can produce 67 thousand and 300 tons of qualified high sulfur concentrate every year, and the cost of mineral processing can be removed, and the income can be increased by 9 million 237 thousand yuan a year.
【學位授予單位】：武漢科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TD95

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