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针对白钨矿在低温高碱条件下粗选回收率低的难题, 开发了一种新型捕收剂SCA, 并在河南某白钨选矿厂进行了工业应用。结果表明, SCA比现场用捕收剂FX-6具有更优的白钨捕收性能和更强的耐低温、耐高碱性能; 在抑制剂Y1用量30 g/t、温度10 ℃、pH值11.0、SCA用量220 g/t条件下, 经一粗两扫闭路浮选, 可获得WO3回收率79.95%的白钨粗精矿, 相比FX-6, 回收率提高了4.53个百分点; 工业应用中, 在捕收剂用量降低20.37 g/t条件下, 使用SCA时的WO3回收率比使用FX-6时提高了2.76个百分点。SCA在低温高碱条件下对白钨矿的浮选指标较好, 具有广阔的工业应用前景。 相似文献
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Flotation performances of polymorphic pyrrhotite 总被引:1,自引:0,他引:1
The floatability of different crystalline structures of pyrrhotite (monoclinic and hexagonal) was studied. It is shown that
the floatability of monoclinic and hexagonal has obvious difference, and that the flotation recovery of monoclinic pyrrhotite
is larger than that of hexagonal pyrrhotite using different collectors. When butyl dithiophosphate is used as the collector,
the recovery is larger than that by sodium butyl xanthate and sodium diethyl dithiocarbamate. At the pH values ranging from
6 to 9, monoclinic pyrrhotite can be floated well, and the flotation recovery is higher than 90%. Monoclinic and hexagonal
pyrrhotites are more easily activated by Cu2+ in acidic conditions than in alkaline conditions. But Cu2+ cannot activate hexagonal pyrrhotite using sodium diethyldithiocarbamate as the collector. By the measurement of contact
angle, it is indicated that monoclinic and hexagonal pyrrhotites float well and are easily activated by Cu2+ when dithiophosphate is used as the collector. Using sodium diethyl dithiocarbamate as a collector, the relationship between
potential and pH range for pyrrhotite flotation is established. At pH 5, the optimal potential range for flotation of monoclinic
pyrrhotite is about 125–580 mV (vs SHE), with the maximum flotation occurring at about 350 mV (vs SHE); the optimal potential
range for flotation of hexagonal pyrrhotite is 200–580 mV (vs SHE), with the maximum flotation occurring at about 300 mV (vs
SHE). 相似文献
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对云南某高硫铅锌矿进行选矿实验研究。原矿铅品位2.98%、锌品位2.79%、银品位114.95 g/t,在磨矿细度为-0.074 mm 76.19%条件下,采用优先浮选工艺流程,以硫酸锌+碳酸钠作为组合抑制剂,以新型捕收剂HQ-Pb作为铅捕收剂,最终获得铅品位56.62%、银品位1915.38 g/t的铅精矿,铅回收率82.36%,银回收率73.44%;获得锌品位45.92%、银品位171.38 g/t的锌精矿,锌回收率82.29%,银回收率7.58%。 相似文献
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这是一篇矿物加工工程领域的论文。通过单矿物浮选实验、接触角测试、Zeta电位测试、吸附量测试及红外光谱分析,研究阿仑膦酸钠对萤石与方解石浮选行为的影响,考查阿仑膦酸钠在两种矿物表面的作用机理。单矿物浮选实验结果表明:在仅添加油酸钠时,萤石与方解石在pH值7~12区间内都具有较好的可浮性,难以分离。在添加阿仑膦酸钠后,萤石与方解石的可浮性出现差异,可以实现两者浮选分离。接触角测试、Zeta电位测试、吸附量测试及红外光谱分析结果表明:阿仑膦酸钠在萤石表面的吸附量较少,对其表面润湿性影响较小,在方解石表面的吸附量大,对其表面润湿性影响较大。阿仑膦酸钠中的两个磷酸基团与方解石表面的钙原子结合,阻碍了油酸分子在方解石表面的吸附,使得方解石被抑制。 相似文献