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内蒙某铜钼尾矿K2O品位为4.28%,Na2O品位为2.77%,根据矿石的性质,采用脱泥—强磁选—浮选除杂—长石浮选的试验流程,试验矿样脱泥后在1200 k A/m磁场强度下脱除磁性矿物,然后分别采用油酸钠和十二胺浮选除杂,再添加硫酸调整p H值至3.1,选用BK440作长石捕收剂,可得到精矿产率18.82%,精矿中K2O品位8.62%,回收率37.88%,Na2O品位4.39%,回收率29.90%,长石精矿中TFe含量为0.42%的技术指标。 相似文献
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陕西某磷矿石矿物成分复杂,主要有用矿物有磷灰石、稀土、磁铁矿和长石,长石精矿质量因被氧化铁严重污染而受到影响。针对该矿石的性质特点进行了选矿试验研究,最终原矿采用磨矿—弱磁选选铁—铁尾矿浮选选磷(稀土)—磷尾矿反浮选除杂—长石粗精矿强磁选除杂的联合工艺流程,可获得铁品位TFe 60.10%、铁回收率TFe 16.04%的铁精矿;品位P_2O_5 25.22%、回收率P_2O_5 81.10%的磷精矿;品位K_2O 2.58%、Na2O 5.62%,回收率K_2O 81.04%、Na_2O 83.82%的长石精矿,较好地实现了该非金属矿的综合回收。 相似文献
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江西某钼矿选矿厂原工艺已不适应矿石性质的变化,导致磨矿-粗选-粗精矿再磨-1粗5精2扫闭路浮选流程仅获得钼品位为45.06%的钼精矿,再磨后的钼浮选作业回收率为90.31%、尾矿钼品位高达1.12%。造成生产指标不理想的原因主要是其他硫化矿物的抑制剂Na2S抑制效果不理想、钼矿物与其他矿物解离不充分。为解决生产中存在的问题进行了选矿试验。结果表明,在核心改造内容为ZA替代Na2S、对再磨选精矿进行2次再磨选的情况下,采用再磨1(-0.038 mm占85%)-1粗3精4扫-再磨2(-0.038 mm占90%)-2次精选、中矿顺序返回流程处理试样,最终获得钼品位为53.57 %、钼作业回收率为98.45 %的钼精矿,尾矿钼品位降至0.175 %,精矿钼品位和钼作业回收率分别提高了8.51个百分点和8.14个百分点,再磨选尾矿品位下降0.945个百分点,高效地实现了钼的回收。 相似文献
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针对川西某伟晶岩锂辉石矿原矿性质复杂的特点,对其进行了强化浮选分离及综合利用试验研究。通过三种流程方案对比,确定最优的选别工艺"阶段磨矿-阶段选别-组合捕收剂强化浮选分离技术",可分别获得产率为5.26%的云母精矿;Li_2O品位高达6.20%,回收率为87.34%的锂辉石精矿。通过对浮锂尾矿进一步回收长石的选矿工艺流程试验,可以获得K_2O+Na_2O含量为11.33%,作业回收率为85.77%,全流程K_2O+Na_2O回收率达到50.57%,Fe_2O_3含量只有0.21%的长石精矿,在一定程度上实现了此类难选伟晶岩型锂辉石矿的综合利用。 相似文献
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《Minerals Engineering》2006,19(11):1216-1217
In this study, recovery of feldspar from trachyte by flotation was studied. A feldspar concentrate containing 5.72% K2O, 5.33% Na2O, 0.321% Fe2O3 and 0.080% TiO2 was obtained from a feed containing 5.20% K2O, 3.37% Na2O, 1.778% Fe2O3 and 0.253% TiO2 with an overall recovery of 22.4% by weight. 相似文献
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分析了某低品位钾长石矿的主要矿物成分,K2O+Na2O含量为7.47%。针对该钾长石矿的性质,进行了单一磁选、脱泥-磁选、浮选、脱泥-磁选-浮选四个除铁流程试验,结果表明浮选法除铁效果较佳。试验首先采用阴离子捕收剂十二烷基磺酸钠和石油磺酸钠反浮选除去长石矿中细粒的含铁矿物,再经HF法用十二胺捕收剂对长石-石英进行分离,结果表明,可得产率43.57%、含Fe2O30.25%、K2O13.10%、Na2O0.21%、SiO266.77%的长石精矿和产率41.33%、含Fe2O30.18%、SiO297.66%的石英精矿。 相似文献
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根据矿石性质研究某锂辉石矿产资源高效综合利用的工艺流程。采用硫酸作pH调整剂,十二胺作捕收剂优先浮选云母,以NaOH作调整剂、CaCl2作活化剂,油酸作捕收剂浮选锂辉石矿物,浮选粗精矿经再磨后以Na2CO3为调整剂精选,获得含Li2O 6.04%、回收率76.77%的锂辉石精矿和纯度较高的云母精矿。 相似文献
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Cengiz Karagüzel 《Minerals Engineering》2010,23(1):17-24
In this study, the separation of feldspar minerals (albite) from slimes containing feldspar and iron containing minerals (Fe-Min) was studied using dissolved air flotation (DAF) technique whereby bubbles less than 100 μm in size are produced. Before the flotation experiments with slimes, single flotation experiments with albite and Fe-Min were carried out using DAF in order to obtain optimum flotation conditions for the selective separation of feldspar from the slimes. Flotation experiments were performed with anionic collectors; BD-15 (commercial collector) and Na-oleat. The two methods of reagent conditioning were tested on the flotation performance; traditional conditioning and charged bubble technique. In addition, the effect of pH, flotation time, rising time, and drainage time which influence the selective separation in the DAF system were studied in detail. Overall, the flotation results indicated that the separation of albite from Fe-Min can be achieved with DAF at 5 min of rising time and 5 min of drainage time. Interestingly, these results also showed that the conditioning of the particles with the charged bubbles increased the flotation recovery of Fe-Min compared to the traditional conditioning. Furthermore, the flotation tests with the feldspathic slime sample were carried out under the optimum conditions obtained from the systematic studies using the single minerals. The charged bubble technique produced an albite concentrate assaying 0.33% Fe2O3 + TiO2 and 11.07% Na2O + K2O from a slime feed consisting of 1.06% Fe2O3 + TiO2 and 10.36% Na2O + K2O. 相似文献
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李崇德 《有色金属(选矿部分)》2021,(2):44-48
某铜矿浮选尾矿WO_3品位为0.056%,可供综合回收。该尾矿矿物组分较复杂,其中钨矿物绝大部分为白钨矿,另有微量的黑钨矿及钨华,金属硫化矿物主要为黄铁矿,微量磁黄铁矿,其他金属矿物主要为褐铁矿、磁铁矿等,非金属矿物主要为石英,其次为钙铁榴石,少量的方解石、长石、绿泥石等。白钨矿可浮性较好,可以采用浮选方法回收,但浮选药剂在回水中残留会显著影响主流程主要金属的浮选指标,而重选流程不会影响回水复用。采用浮选开路试验脱硫后,再通过螺旋溜槽分级富集-磁选除杂-摇床回收粗粒级白钨矿-异形面溜槽回收微细粒级白钨矿,全流程试验获得了产率为0.05%,WO_3品位为30.11%,WO_3回收率为26.41%的钨精矿。 相似文献
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内蒙某钽铌尾矿含有大量的锂云母矿物,尾矿中的脉石矿物主要为长石、石英类硅酸盐矿物,矿石中的细泥(含原生细泥和磨矿产生的次生细泥)矿物制约锂云母浮选精矿品质的提高。对含Li2O 1.02%的钽铌尾矿,采用尾矿脱泥-锂云母浮选(一次粗选、一次选扫)的工艺流程,锂云母浮选采用碳酸钠作调整剂,椰油胺+MC-2作组合捕收剂,获得锂精矿含Li2O 5.02%,达到优质锂盐级标准;锂精矿对钽铌尾矿回收率为74.82%,有效实现了尾矿中锂资源的综合回收利用。 相似文献