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内蒙古磁铁矿矿石性质较复杂,含铁36.22%,含硫1.197%,磁铁矿嵌布粒度细,有害元素硫不易脱除,研究确定了先浮后磁的选矿工艺流程。采用反浮选脱硫,并通过试验确定了磨矿粒度-0.074mm90%、异戊黄药用量150g/t、2#油用量60g/t、矿浆pH值为5.5、硫酸铜用量400g/t的最佳选矿条件,验证试验表明,铁精矿品位可达64.81%,铁回收率72.82%,铁精矿含硫仅为0.415%。 相似文献
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本文在分析了矿石中所含硫主要是具有磁性,可浮性差的磁黄铁矿,它是影响铁精矿脱硫的主要原因。提出了浮选与磁选联合流程选铁脱硫,使铁精矿达到质量要求,并对硫和铜钴进行了综合回收的论述。 相似文献
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攀枝花某高铬型钛磁铁矿矿石中含有丰富的钛磁铁矿和钛铁矿资源,文章根据该矿石钛磁铁矿及钛铁矿等有用矿物的赋存状态,研发出“两段磨矿-磁选-磁浮选”分离回收钛磁铁矿和“两段强磁选-脱硫浮选-钛粗选-精选”回收钛铁矿的磁浮联合工艺流程,全流程闭路试验可获得产率34.20%、TFe品位55.71%、TiO2品位13.46%、TFe回收率70.54%、TiO2回收率50.87%的钛磁铁精矿以及产率4.86%、TiO2品位48.25%、TiO2回收率25.91%的钛精矿,高铬型钛磁铁矿中钛磁铁矿及钛铁矿得到有效回收。 相似文献
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新疆某低品位钒钛磁铁矿选矿试验研究 总被引:1,自引:0,他引:1
新疆某低品位钒钛磁铁矿全铁含量为13.74%,通过对其进行工艺矿物学及可选性试验,确定了处理该矿石合理的选别工艺流程,即预选抛尾-两段阶磨阶选工艺,取得了精矿TFe品位59.36%的较好试验指标,为高效开发利用该低品位钒钛磁铁矿提供了技术依托。 相似文献
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某含砷锌铁矿石选矿试验研究 总被引:1,自引:0,他引:1
针对某含砷难选锌铁矿石,采用浮一磁流程,石灰为pH值调整剂,并配合亚硫酸钠抑制毒砂,捕收剂为选择性好的硫氨酯,获得了较好的试验结果。 相似文献
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Pre-oxidation of fines of magnetite containing materials is usually carried out to get better yield of metals. Titaniferous magnetite ore (TMO) is one kind of low-grade iron ore (around 45–50% of total Fe) with a significant amount of TiO2 (23.23%) and V2O5 (0.403%). TMO fines have been pre-oxidised at 973?K (700°C) for 9?h under air atmosphere. The effect of reduction of raw TMO fines as well as the pre-oxidised TMO fines using boiler grade coal in the form of cylindrical briquettes has been studied in the temperature range of 1273?K (1000°C) to 1473?K (1200°C) for periods of 10, 20, 30, 40 and 60?min to estimate the relative yield of iron. The influence of temperature and time on reduction experiments has also been investigated with XRD, FESEM analyses along with chemical analysis of the reduced samples. The most novel result is that the yield of Fe by direct reduction of raw TMO (92.42%) is even marginally better than that of reduction of pre-oxidised TMO (90.89%) at 1473?K (1200°C) for 60?min. Thus the single-step reduction of raw TMO is techno-economically more viable than the pre-oxidation followed by reduction technique. 相似文献
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江西某铅锌银多金属矿的特点是含硫高,并含有铅、锌、银、铁、锰等多种有用金属矿物可以回收利用.试验针对该多金属矿物中伴生复杂的情况,对比了铜铅锌优先浮选和铜铅锌优先浮选-锌粗精矿再磨-锌中矿磁选的工艺流程,后者获得了较好指标:铅精矿含Pb 49.57%,Pb回收率87.53%;锌精矿含Zn 45.82%,Zn回收率75.12%;硫精矿含S 44.69%,S回收率71.35%.针对铁锰以碳酸盐的形式存在,且与脉石伴生严重呈细粒嵌布的情况,采用了磁选-焙烧-磁选的试验方案回收浮选尾矿中的铁锰. 相似文献
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Bitan Kumar Sarkar Maharshi Ghosh Dastidar Rajib Dey Gopes Chandra Das 《Canadian Metallurgical Quarterly》2019,58(3):299-307
In the present study, isothermal reduction kinetics of titaniferous magnetite ore (TMO) fines (below 75?µm particle size) using coke dust, an industrial waste, in the form of briquettes have been performed at temperatures ranging from 1273 to 1473?K over varying reduction times: 5, 10, 20, 30, 40 & 60 min. This process aims at the efficient utilisation of TMO which can serve as an alternate potential source of iron, titanium and vanadium. Chemical analysis of the briquette reduced at 1473?K for 60 min, yields a maximum of 89.56% degree of metallisation. Contracting geometry (CG3) is found to be the dominant driving mechanism involved and the activation energy of the reaction is evaluated as 59.52?KJ?mol?1. 相似文献
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针对某高铁铜硫矿石的性质,将原矿磨至细度为≤74μm占70%、以碳酸钠为pH调整剂、丁基黄药+丁铵黑药为组合捕收剂混合浮选铜硫,铜硫粗精矿再磨至≤45μm占85%后,主要以新型无机抑制剂DT-2#(次氯酸钙为有效成分)为黄铁矿抑制剂进行铜硫分离,浮选尾矿进行磁选选铁.试验结果表明,采用"铜硫混浮-粗精矿再磨-铜硫分离-浮选尾矿磁选"流程,在原矿含铜0.52%、硫2.31%、铁49.26%的条件下,可获得含铜22.36%、回收率为87.29%的铜精矿,含硫38.43%、回收率为62.88%的硫精矿,含铁66.98%,回收率为91.34%的铁精矿.所用工艺流程简单,选矿指标较佳. 相似文献
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