云南某含碳铅锌矿浮选回收铅锌试验研究

采用优先浮选碳-铅硫混选分离-锌硫混选分离的浮选工艺流程对云南某含碳铅锌矿进行了试验研究, 成功获得了铅精矿、锌精矿, 并有效回收了硫。铅精矿中铅品位47.72%、锌品位4.25%、铅回收率48.05%、锌回收率0.38%, 锌精矿中锌品位50.27%、铅品位0.72%、锌回收率94.21%、铅回收率15.13%。铅、锌在碳产品中损失不大。     

某低品位铜铅锌硫化矿浮选分离试验研究

针对某低品位铜铅锌硫化矿,采用铜铅顺序优先浮选-锌硫混合浮选再分离工艺进行了浮选分离试验研究。选用高效选择性铜捕收剂BK916和铅捕收剂BK906进行了铜铅顺序优先浮选试验研究,并在锌硫分离试验研究中,利用环保型抑制剂BD和石灰的组合作用,有效抑制了锌硫混合精矿中的黄铁矿,获得了铜品位20.68%、铜回收率72.98%的铜精矿,铅品位61.38%、铅回收率73.57%的铅精矿,锌品位46.31%,锌回收率73.17%的锌精矿和硫品位48.54%的硫精矿。     

甘肃某铜铅锌多金属矿选矿试验研究

对甘肃某铜铅锌多金属矿进行了浮选试验研究,结果表明,采用反浮选除炭—铜铅混合浮选—铜铅分离—尾矿选锌选硫的工艺流程,可获得铜品位14.32%、铜回收率37.68%的铜精矿,铅品位45.60%、铅回收率83.21%的铅精矿,锌品位47.45%、锌回收率92.71%的锌精矿,硫品位31.26%、硫回收率26.52%的硫精矿,达到了对该矿的综合利用。     

某铜铅锌多金属硫化矿选矿试验研究

对某富含金银等贵金属的复杂铜铅锌多金属硫化矿进行了选矿试验研究。以BK916作铜捕收剂、BK906作铅捕收剂,采用铜优先浮选-铅浮选-锌硫混合浮选-锌硫分离工艺回收主要有价元素,获得了铜精矿铜品位24.26%、回收率58.21%,铅精矿铅品位70.75%、铅回收率86.55%,锌精矿锌品位51.53%、锌回收率89.44%,硫精矿硫品位39.84%、回收率38.03%的良好选矿指标;铜、铅、锌、硫4种精矿产品中金总回收率92.16%、银总回收率89.44%。     

四川某高硫铜铅锌矿选矿工艺研究与生产实践

根据矿石性质,针对四川某高硫铜铅锌矿进行了浮选分离研究,工业试验采用铜铅混合浮选再分离—锌、硫顺序浮选的选矿工艺流程获得了铜精矿品位20.15%,回收率80.12%;铅精矿品位60.10%,回收率83.24%;锌精矿品位47.01%,回收率78.64%;硫精矿品位38.92%,回收率72.64%的较好选别指标。工业试验表明,新工艺取得了较好的技术经济指标。     

安徽某含碳铅锌矿选矿工艺试验

为了高效综合回收安徽某含碳铅锌难选矿,在矿石性质研究的基础上对该矿进行了试验研究。研究结果表明：通过采用铅锌优先浮选工艺流程,最终获得了铅品位55.35%、铅回收率94.76%的铅精矿,锌品位55.46%、锌回收率91.98%的锌精矿,硫品位43.55%、硫回收率70.90%的硫精矿,为该矿石的回收利用确定了最优的浮选工艺。     

高岭土尾矿中低品位铅锌硫化矿捕收-抑制-再活化浮选研究

对高岭土尾矿所含低品位铅锌硫化矿进行了分别回收铅、锌、硫精矿的浮选分离研究。采用捕收-抑制-再活化浮选工艺流程获得了铅品位和回收率分别为69.32%、75.95%的铅精矿, 锌品位和回收率分别为59.23%、82.53%的锌精矿以及硫品位和回收率分别为52.52%、70.22%的硫精矿。     

云南某铅锌矿选矿工艺试验研究

对云南某黄铁矿型含银铅锌多金属硫化矿选别的工艺流程及药剂条件进行了工艺试验研究。试验结果表明, 用优先浮选流程及所选药剂条件处理该试料可获得铅品位57.33%、铅回收率94.08%、银品位2 201.72 g/t、银回收率83.14%的铅精矿;锌品位48.28%、锌回收率88.38%的锌精矿和硫品位45.09%、硫回收率77.39%的硫精矿。     

云南某难选氧化铅锌矿浮选试验研究

对云南某难选氧化铅锌矿进行了浮选试验研究,采用先硫后氧、先铅后锌流程,并在氧化锌浮选作业采用加温及使用氧锌灵作辅助捕收剂的不脱泥流程,取得了较好的技术指标:锌总回收率83.26%,其中硫化锌精矿锌品位50.38%、锌回收率16.69%,氧化锌精矿锌品位22.29%、锌回收率66.57%;铅总回收率56.37%,其中硫化铅精矿铅品位50.86%、铅回收率30.61%,氧化铅精矿铅品位49.15%、铅回收率25.76%。     

黑龙江某铅锌伴生银多金属硫化矿浮选试验研究

根据矿石的工艺矿物学研究,对黑龙江某铅锌伴生银多金属硫化矿进行了浮选分离试验研究,试验结果表明,采用铅锌硫依次优先浮选流程,可以实现铅锌的高效分离,并可将大部分伴生银矿物富集到铅精矿中。闭路试验获得铅品位65.83%,回收率为93.12%的铅精矿,锌品位为51.10%,回收率为89.24%的锌精矿,硫品位为46.03%,回收率为33.35%的硫精矿,铅精矿含银品位为1 105.50g/t,银回收率为86.27%。     

某含金低品位铅锌矿石的浮选试验研究

针对新疆某嵌布粒度细、共生关系复杂、含金矿物分散的含金低品位铅锌矿石,通过铅、锌、硫依次优先浮选,得到三种精矿产品,铅精矿含铅46．08％、金73．64g／t,锌精矿含锌50．95％、金14.32g／t,硫精矿含硫35．06％、Au11．39g／t,金的总回收率达到81．15％。     

Chemical Fractionation and Contamination Intensity of Trace Elements in Stream Sediments at the Sarcheshmeh Porphyry Copper Mine, SE Iran

This paper presents chemical fractionation and contamination intensities of trace elements in stream sediments at the Sarcheshmeh mine, southeastern Iran, which is one of the world’s largest Oligo-Miocene porphyry copper deposits. Evaluation of environmental pollution indices and maximum probable background concentrations revealed that As, Cu, Cd, Mo, Pb, Sb, Se, S, and Zn are highly concentrated in the contaminated sediments, while Cr, Co, Ni, Fe, and Mn show lower enrichment values. Discharges of industrial effluents (especially those contaminated by tailings), reject waste from the semi-autogenous mill, and rock waste drainages are the main anthropogenic contaminant sources. High values of As, Cu, Fe, Mo, Pb, and Zn were associated with the oxidizable, primary sulfide, and residual sediment fractions. Relatively high percentages of Co (>92?%), Cr (>58?%), Cu (>79?%), Fe (>40?%), Mn (>97?%), Ni (>87?%), and Zn (>83?%) in the sediments associated with the rock waste drainages were readily released during the extraction of water-soluble, exchangeable, and carbonate fractions. Sediments that received reject waste drainages were also polluted by As (>351.7?mg?kg^?1), Cu (>1.58?%), Mo (>91.8?mg?kg^?1), Pb (>291.8?mg?kg^?1), and Zn (>762.4?mg?kg^?1). A large percentage of these contaminants were found to be adsorbed and co-precipitated with amorphous Fe-oxides and carbonate phases. The chemical fractionation pattern of the potentially hazardous trace elements corresponded well with the mineralogical composition of the contaminated sediments.     

庆元铅锌矿选矿工艺改进

根据原矿的性质优化选矿流程,将易选的巨鸟洞矿石通过粗精再磨再选,直接浮选生产高品位、高质量的铅精矿和锌精矿。较难处理的老鹰岩矿石先混合浮选,产出铅锌混合精矿,然后用摇床分选出部分铅精矿。总的产品和有铅精矿（Pb71.24%,Zn3.42%和Pb75.79%,Zn2.44%)、锌精矿（Zn57.82%,Pb0.81%)和铅锌混合精矿（Pb18.42%,Zn36.04%)。铅锌回收率由两种矿混合处理生产和铅精矿和锌精矿时的Pb81.84%,Zn80.1%提高到Pb91.68%,Zn91.8%。与两种矿混合处理相比,虽然吨矿产值相近,前为246.76元/t原矿,后为244.33元／t原矿,但生产成本由147.18元／t原矿降到110.82元／t原矿,经济效益可观。     

某复杂难选铅锌多金属硫化矿选矿试验研究

某难选铅锌矿石,由于铅、锌矿物共生关系复杂,嵌布粒度不均匀,致使铅锌矿分选困难。试验采用细磨工艺(90%-74μm),优先浮选流程,通过添加组合抑制剂使铅锌矿物有效分离,获得合格铅、锌精矿,银也同步富集到铅精矿中。最终闭路试验获得,铅精矿品位71.4%、铅回收率94.9%,锌精矿品位55.5%、锌回收率70.9%,银总回收率达到76.34%。     

银铅无碱混选工艺分选含银低品位铅锌硫化矿石

对某含银低品位铅锌硫化矿进行了选矿工艺流程的试验研究.根据矿石性质,采用银铅混选(银铅粗精矿再磨)-锌浮选和银铅混选(银铅中矿再磨)—锌浮选两种原则工艺流程进行试验研究,银铅混选时,采用选择性的银铅捕收剂组合BK906+BK903G在近中性的无碱条件下将银矿物和硫化铅矿物浮出,获得银铅混合精矿;然后通过常规的石灰+硫酸...     

某难选铅锌矿石浮选分离试验研究

某铅锌矿石磁黄铁矿含量高,铅锌矿物嵌布细密,交代结构突出,采用常规选矿药剂难以产出合格的铅锌精矿产品。为此,试验针对该矿石特性,采用自行研制的EML3、EML6捕收剂,取得了铅精矿含铅59.38%、含锌3.45%,铅回收率77.07%;锌精矿含锌43.20%、含铅2.43%、锌回收率74.61%的试验指标,为开发该铅锌矿及同类型复杂矿提供了可行的技术依据。     

大洋富钴结壳选矿尾矿的表面改性及应用研究

采用酸、碱、盐、有机物等药剂对大洋富钴结壳选矿尾矿进行了单一及复合改性处理,并将改性后的尾矿直接用于吸附模拟废水中的Cu2+、Pb2+、Zn2+、Cd2+等重金属离子,以评价改性效果。结果表明,NaOH、CJ盐和有机物CMB可以提高大洋富钴结壳选矿尾矿的吸附能力,其中CJ盐的改性效果最佳。当CJ占矿重百分比为25%时,CJ改性后尾矿对Cu2+和Pb2+的最大吸附率分别可达49.86%和97.70%,比未改性尾矿的吸附率分别要高出23%和9%以上;而对于Cd2+和Zn2+来说,当CJ占矿重百分比分别为50%和75%时,CJ改性后尾矿对它们的吸附率达最大,分别为38.86%和61.45%,比未改性尾矿的吸附率要高出10%和20%以上。     

Assessment of Metals Pollution from Tailing Sites in the North Caucuses Region,Russia

The concentrations of metals were determined in the water and bottom sediments of both the Urup and Kuban Rivers near tailings sites in the North Caucasus region of southern Russia. The average concentrations in the Urup followed the order Fe?>?Mn?>?Pb?>?Cu?>?Zn?>?Cd?>?Ni?>?Co, while in the Kuban, the order was Fe?>?Pb?>?Zn?>?Ni?>?Mn?>?Cd, with copper and cobalt not detected. The levels of Zn, Cu, Pb, Cd, and Ni were above Russia’s maximum permissible concentration in both rivers. The water pollution index (WPI) values in Urup ranged from 12.97 to 28.17, indicating that the river is extremely polluted (Class VII), while the WPI value for Kuban ranged from 2.34 to 4.33 downstream of the tailings site, which corresponds to Class IV (contaminated). Calculating the coefficient of accumulation in sediments (CAS) revealed that in Urup, the CAS values for Ni and Cu were 3046 and 11638, respectively, which indicates an emergency environmental situation, while for Co, Fe, and Mn, the situation is high level chronic pollution (CAS?>?10⁴). The Kuban CAS values of Fe and Mn were also >?10⁴, again highly and chronically polluted. Most of the metals in both rivers are bound to the sediments, with minimal mobility. The potential ecological risk is moderate to considerable in Urup, and low in the Kuban River.     

从锌精矿中回收金银的工艺研究

采用抑锌浮金银工艺,通过一次粗选、一次扫选、一次精选的浮选流程分离回收金银。获得含金20.96 g/t、银1 807.38 g/t、回收率金90.35%、银93.79%的金银精矿和含锌53.97%、锌回收率98.97%的锌精矿。试验结果表明,锌精矿通过浮选分离回收金银,锌精矿品位提高10%以上。实现金银综合回收的同时,锌精矿的品质得到较大提高。     

复杂铜精矿氧压浸出综合回收工艺

呷村铜精矿中铜矿物主要为难浸出的(锑、砷)黝铜矿, 还含有较高的铅、锌、银、砷和锑。针对该矿采用一段氧压浸出综合回收工艺进行处理, 通过条件优化实验确定了氧压浸出的操作条件。扩大验证实验表明Cu、Zn的浸出率分别高达97.10%、89.83%, Pb、Ag转化为矾类和硫化物形式留在浸出渣中, 铜锌与铅银分离彻底。浸出液中的铜、锌分别通过萃取、电积进行回收。浸出渣中的铅、银通过氯盐浸铅、硫脲浸银进行回收。铜萃取率, 铅、银浸出率分别为96%、90%、95%。