共查询到19条相似文献,搜索用时 89 毫秒
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江西某白钨矿矿石中主要有价元素为钨,钨主要以白钨矿形式存在。现场原采用重选工艺回收,生产指标不理想。为提高白钨矿分选指标,进行了系统的选矿试验研究。结果表明,原矿在磨矿细度为-0.074 mm占65%条件下浮选脱硫后,以NaOH+Na2CO3为调整剂、Na2SiO3+GS为抑制剂、731氧化石蜡皂+YK为捕收剂,采用1粗2精2扫预精选—预精选精矿浓缩后经1粗4精2扫—1次2次精选尾矿合并精扫选—精矿返回2次精精选、尾矿返回1次精扫选的工艺流程,获得了WO3品位66.71%、回收率72.91%的钨精矿。根据试验结果对现场工艺进行改造优化后,现场生产获得了WO3品位62.29%、回收率74.21%的钨精矿,较原工艺流程WO3品位和回收率分别提高了10.10和18.86个百分点,钨精矿中硫含量从1.53%降至0.21%,优越性明显。 相似文献
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云南某白钨矿浮选试验研究 总被引:4,自引:3,他引:1
李俊萌 《有色金属(选矿部分)》2013,(2):33-35
云南某白钨矿中有价金属矿物为白钨矿,根据原矿性质,采用常温浮选工艺流程,最终获得了白钨精矿品位63.17%、回收率86.32%的良好试验指标。 相似文献
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广西铜铅锌矿为典型复杂难选多金属硫化矿,黄铜矿与闪锌矿互相包裹、交代共生,在浮选分离时难以获得合格的铜精矿产品。经试验研究,采用“抑锌—浮选铜铅—铜铅分离—铜铅混合浮选尾矿选锌”工艺,以氧化钙、硫酸锌配合实验室新制的锌抑制剂CZ-002抑制闪锌矿和硫化铁矿物,实验室新合成捕收剂CY-2A浮选铜铅。最终闭路试验获得铜精矿铜品位22.48%、回收率70.11%;铅精矿铅品位57.39%、回收率84.84%;锌精矿锌品位51.93%、回收率88.42%。试验指标较好,实现了铜铅锌多金属的有效分离。 相似文献
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L. S. Leal Filho P. R. Seidl J. C. G. Correia L. C. K. Cerqueira 《Minerals Engineering》2000,13(14-15)
It has long been recognized that the selectivity of froth flotation processes is highly influenced by the specificity of interactions between minerals and reagents that are used to control the hydrophobic/hydrophilic character of the mineral/water interfaces. We have modelled mineral surfaces (hydroxy-apatite, calcite) and molecules of two polysaccharides (starch, ethyl-cellulose) which are candidates as depressing agents for calcite. A special parameter named “Total Fitting Number” (Ft) was developed to assess the steric compatibility between the structure of both minerals and polysaccharide species. The calculation of Ft was based on measurements of OH-OH distances that exist at reagent molecular structures versus Ca---Ca distances that exist along the most common crystallographic orientations (hkl) exhibited by mineral particles.Higher values of Ft were found for the interaction calcite/starch than calcite/ethyl-cellulose. This finding suggests that starch is a more effective depressant for calcite than ethyl-cellulose. However, low values of Ft were found for the interaction apatite/starch and apatite/ethyl-cellulose. This fact means that both substances are unlikely to act as depressants for apatite. Microflotation response of apatite and calcite with sodium oleate (pH = 10.2) in the presence of both polysaccharides corroborates the model. 相似文献
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O. N. Bel'kova S. B. Leonov B. F. Kukharev V. K. Stankevich 《Journal of Mining Science》1995,31(1):64-68
Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 1, pp. 75–79, January–February, 1995. 相似文献
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广东某大型铜硫矿矿石富含磁黄铁矿型铜硫矿和黄铁矿型铜硫矿,因露天开采,矿物表面易氧化.采用常规的强碱浮铜工艺,生产指标波动较大.对此,研究开发出非碱性浮铜工艺,即在铜粗选中加少量石灰调矿浆pH=7左右,同时加入特效调整剂CW.在原矿中磁黄铁矿与黄铁矿的比例以及黄铁矿型氧化矿含量不同的情况下,获得较好的工业试验指标:铜精矿Cu品位19.59%~24.12%、铜回收率83.03%~85.91%,硫精矿S品位37.86%~40.46%、磁硫精矿S品位30.02%~32.89%,总硫回收率90.14%~93.12%. 相似文献