In the Xinchang-Yongjia silver (lead-zinc) ore belt, there mainly occur the large to medium-sized Haoshi, Bamao, Dalingkou and Wubu silver deposits or silver-bearing lead-zinc deposits. On the basis of researches on t...In the Xinchang-Yongjia silver (lead-zinc) ore belt, there mainly occur the large to medium-sized Haoshi, Bamao, Dalingkou and Wubu silver deposits or silver-bearing lead-zinc deposits. On the basis of researches on these typical deposits, the mechanism of leaching-drawing mineralization of Mesozoic geothermal water and the related model are put forward in this paper in the light of the time interval between rock and formation ages as well as hydrogen, oxygen, sulphur and lead isotope geochemical characteristics. The major metallogenic process occurred in volcanic rock layers. The ore-forming fluids are geothermal water coming from meteoric water and circulating at shallow layers. This geothermal water leached and absorbed ore-forming materials from its country rocks during its flowing (such metallogenic elements as silver, lead-zinc and sulphur mainly came from consolidated volcanic rocks), leading to the formation of meso - epithermal silver deposits.展开更多
为获得高品质的银铅精矿,对某高硫银铅锌多金属矿石分别进行异步浮选—粗精矿全部再磨浮选、异步快速浮选—中矿集中再磨浮选和分段分速异步浮选—粗精矿部分再磨浮选试验。试验结果表明在磨矿细度为-0.074 mm 70%的情况下,分段分速异...为获得高品质的银铅精矿,对某高硫银铅锌多金属矿石分别进行异步浮选—粗精矿全部再磨浮选、异步快速浮选—中矿集中再磨浮选和分段分速异步浮选—粗精矿部分再磨浮选试验。试验结果表明在磨矿细度为-0.074 mm 70%的情况下,分段分速异步浮选—粗精矿部分再磨浮选优于其余两种工艺,浮选流程获得的银铅精矿银品位621 g/t、银回收率54.18%,铜品位0.84%、铜回收率34.62%,铅品位62.78%、铅回收率89.42%,锌品位6.45%、锌回收率5.83%。展开更多
文摘In the Xinchang-Yongjia silver (lead-zinc) ore belt, there mainly occur the large to medium-sized Haoshi, Bamao, Dalingkou and Wubu silver deposits or silver-bearing lead-zinc deposits. On the basis of researches on these typical deposits, the mechanism of leaching-drawing mineralization of Mesozoic geothermal water and the related model are put forward in this paper in the light of the time interval between rock and formation ages as well as hydrogen, oxygen, sulphur and lead isotope geochemical characteristics. The major metallogenic process occurred in volcanic rock layers. The ore-forming fluids are geothermal water coming from meteoric water and circulating at shallow layers. This geothermal water leached and absorbed ore-forming materials from its country rocks during its flowing (such metallogenic elements as silver, lead-zinc and sulphur mainly came from consolidated volcanic rocks), leading to the formation of meso - epithermal silver deposits.
文摘为获得高品质的银铅精矿,对某高硫银铅锌多金属矿石分别进行异步浮选—粗精矿全部再磨浮选、异步快速浮选—中矿集中再磨浮选和分段分速异步浮选—粗精矿部分再磨浮选试验。试验结果表明在磨矿细度为-0.074 mm 70%的情况下,分段分速异步浮选—粗精矿部分再磨浮选优于其余两种工艺,浮选流程获得的银铅精矿银品位621 g/t、银回收率54.18%,铜品位0.84%、铜回收率34.62%,铅品位62.78%、铅回收率89.42%,锌品位6.45%、锌回收率5.83%。
