Scientific grounds for high-performance agent modes in platiniferous sulfide mineral flotation from rebellious ores

The author substantiates the choice of new selective agents PTTC, HPEDETC, and Hostaflot M-91 to float platiniferous sulfide minerals from rebellious ores. The study agent modes imply the use of PTTC, being a component of modified xanthate and providing 6–7% increase in recovery of copper, nickel, and PGM in flotation of the low-sulfide platiniferous copper-nickel ore from the Fedorovo-Pansky deposit. The substitution of HPEDETC and Hostaflot M-91 for xanthate makes it possible to increase recovery of platinum by 5.7–13%, palladium by 4–9% and 2–4 times the noble metal content in the flotation concentrate.     

Basic principles of selecting separation methods for sulfide minerals having similar properties in complex ore concentrates

The article gives analytical and experimental data on separation of sulfide minerals in bulk concentrates of complex ores. The separation methods for minerals having similar process properties are selected. It is found which factors influence mineral separation efficiency in concentrates of rebellious and complex ore processing. The authors present fresh data on activating effect exerted by cations of copper on floatability of sphalerite, galena, pyrite and pyrrhotine species, as well as on activating effect of copper minerals. It has been studied how species of pyrite and nonferrous metal sulfides influence oxidation, floatability and depression. The selected methods to separate complex ore concentrates provide for multistage flotation circuit, with recovery of rebellious species into rough concentrates and products and their separation in different cycles later on. A system mode has been developed and recommended for dosing selective collectors, depressors and modifiers to achieve the best flotation performance.     

Improvement in ore beneficiation technology of complex substance composition

The results are presented for investigations on improving beneficiation process of mineral raw material of complex composition by way of example of rebellious polymetallic ore from the Zhairemsky deposit. It is found that the production of conditioned collective concentrates by accelerated electron action is accompanied by reduction in losses of lead and zinc with the tailings that are 2–3 times less than in direct selective flotation. Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 5, pp. 97–102, September–October, 1999.     

On gold extraction from rebellious ores

The paper generalizes research findings on application of chemical additives to stage-by-stage processing of rebellious gold-bearing ores. The designed stages of gold extraction intensification are the controlled mineral alteration by preparation, use of conventional and specific collecting agents to prepare mineral surface to sorption to intensify flotation, creation of selective collecting agents, and cyanation optimization by introducing additional oxidation agents. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 2, pp. 102–109, March–April, 2009.     

New complexing agents to select auriferous pyrite and arsenopyrite

The authors propose the process for selective flotation of auriferous pyrite and arsenopyrite, where the combination of xanthate, 2-hydroxylpropyl ester of diethyldithiocarbamate acid (HPEDEDCA) and oak-bark extract (OBE) is used to produce pyrite concentrate recovered into the froth product. The process provides the selective recovery of valuables into heteronymous concentrates, thus reducing the irrecoverable valuable component loss by 5–7 %. The complexing capacity of HPEDEDCA to gold is experimentally proved and allows using it as a selective collector of auriferous iron sulfides. The use of OBE to depress iron sulfides and arsenic in flotation of multicomponent ores contributes to higher flotation selectivity and grade of heteronymous concentrates.     

Effect exerted by structural features of copper-zinc ores on their oxidation and technological properties

Modeling the oxidation of pyrite copper-zinc ores under evaporization shows that structural features of ores influence the process kinetics, and displays new-formed mineral phases, namely, gannigite, biankite, chalcanthite, which relate with sulfate generating on evaporation from natural and process waters at pyrite deposits. The oxidation effect on the mineral flotation properties is described. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 4, pp. 101–110, July–August, 2008.     

袁家村微细粒混合铁矿浮选关键技术研究

针对袁家村铁矿浮选给矿粒度微细,处理铁矿物种类多的特点,创新研发出大循环阴离子反浮选技术,并成功应用于袁家村选矿厂。扩大连选试验表明浮选精矿品位为66.25%,作业回收率为85.20%。袁家村选矿厂生产实践表明浮选精矿品位为65.92%,作业回收率为88.55%。     

安徽某钨矿中钼的综合回收试验研究

简要分析了安徽某钨钼矿的矿石性质,探讨了钨钼矿物回收的原则工艺,制定了优先浮辉钼矿等硫化矿,混合精矿钼硫分离的工艺流程。在磨矿细度为-0.074 mm占75.60%的情况下,采用1粗2精1扫浮硫-1粗5精1扫分离钼的闭路工艺流程,获得的钼精矿Mo品位为40.64%,回收率为70.86%。     

Phase conversions in sulfide ores on combined irradiation and heating

Results are given on how irradiation and heat treatment affect sulfide ores and minerals. Accelerated-electrons produce low-temperature phase conversions in iron-bearing sulfides, which give magnetic oxides; hematite and magnetite. This effect can be used in ecologically clean technologies for beneficiating rebellious mineral raw material. Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 1, pp. 94–101, January–February, 2000.     

Contemporary problems of mineral raw material beneficiation in Russia

The contemporary state of the raw material base in the country is analyzed and a negative tendency is noted as a reduction in the extraction of mineral resources and worsening the quality of extracted ores. It is shown that in the near future the deposits developed will be mainly finely disseminated and rebellious ores and this requires new solutions in the technology and technique of their beneficiation. Examples are provided of advanced solutions in technological mineralogy, directed changing in mineral and ore properties with different kinds of energy actions, and the use of pyro- and hydrometallurgical technologies that open definite possibilities for the rational and complex use of rebellions mineral raw material. Institute of Problems of Complex Development of Bowels, Russian Academy of Sciences, Moscow. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 3, pp. 107–121, May–June, 1999.     

河北某难选赤铁矿强磁选—反浮选试验研究

采用阶段磨矿—阶段强磁选—强磁选精矿反浮选工艺流程对铁品位不到25%的河北某难选赤铁矿石进行选矿试验,在-0.074mm占96.20%的最终磨矿细度下,取得了精矿产率为25.43%,铁品位为66.27%,铁回收率为68.49%,总尾矿铁品位为10.39%的选别指标。     

西藏某氧化铜矿石选矿试验研究

对西藏某氧化铜矿石进行了可选性试验研究。试验根据矿石的工艺矿物学特性,以传统的硫化浮选工艺为基础,采用“硫氧分步粗选-粗精矿混合精选”的工艺流程并辅之以新型高效浮选药剂,有效地选别和综合回收了矿石中的有价元素铜和伴生金、银。闭路试验指标为,铜精矿品位31.66%、回收率83.25%,铜精矿含金1.50g/t、银106g/t,金、银回收率分别为78.62%、64.35%。     

西藏桑日混合铜矿石选矿试验研究及工业应用

在混合铜矿浮选时,添加螯合捕收剂B130,不但能减少硫化钠用量,而且能硫氧混选,简化选矿工艺流程,提高选矿厂的技术经济指标。桑日铜矿的选矿闭路试验和生产应用结果表明,B130对氧化铜矿物具有较强的捕收能力,它和黄药混用能产生协同效应,与传统硫化-黄药法相比,在铜精矿品位相当的情况下,可提高铜回收率6%左右,金回收率11%左右。     

Talc separation from talc-carbonate ore to be suitable for different industrial applications

The natural flotation behaviour of pure talc mineral was first studied by measuring its contact angle, flotation recovery and zeta potential. Polypropylene glycol was used as a frother to increase the talc flotation at relatively shorter times. This study was used to beneficiate talc- carbonate ore to obtain talc concentrates suitable for various industrial uses. Effects of pH and frother dosage on the flotation process were studied. A rougher concentrate, with talc grade of ≈ 60 % and recovery of 90%% was obtained. The rougher concentrate product was reground to 100 % -125 μm and floated at the predetermined optimum flotation conditions. Clean talc concentrate at a recovery of 70% with a grade of 93.5 % from an ore containing 48.69 % talc, was obtained.     

某微细粒难选铁矿选矿试验研究

某铁矿石中TFe为32.54%,MFe为23.26%,SiO_2为46.84%,该矿石具有铁矿物种类多、嵌布粒度细等特点。为了高效低能耗开发利用该矿石资源,采用"粗粒抛尾—阶段磨矿阶段弱磁选—精矿反浮选"工艺流程进行选矿试验,获得铁精矿中铁品位为65.13%,回收率为72.18%的试验指标。     

某复杂铜铅锌银多金属硫化矿的综合回收试验研究

某复杂铜铅锌银多金属矿富含多种有价金属元素,但有用矿物嵌布粒度细且不均匀,嵌布关系十分复杂。工艺矿物学研究表明铜矿物主要为黝铜矿,且大部分的银以类质同象赋存在该矿物中,在国内实属罕见。本试验采用优先浮选流程再结合中南大学新型铜捕收剂MT-20及铅捕收剂BITCM,获得了铜精矿品位为18.18%、回收率为81.03%,铅精矿品位为55.56%、回收率为72.63%的工艺指标。全流程闭路试验结果表明该工艺操作方便,指标稳定,各有价金属回收率高,达到了综合回收目的。     

新桥低铜高硫磁铁矿选矿试验研究

论述了新桥低铜高硫磁铁矿采用等可浮选铜、铜尾浮选硫、硫尾选铁的流程，取得了较好的选别指标，添加亚硫酸纳对提高选铜指标有显著效果。     

Effect of powerful nanosecond electromagnetic impulses on surface and flotation properties of carbonate-bearing pyrite and arsenopyrite

The effect of powerful nanosecond electromagnetic impulses (PEMI) on the surface and flotation properties of arsenopyrite and carbonate gold-bearing pyrite from the Darasunsk deposit has been studied. X-ray-phase diffractometry, X-ray photoelectronic and IR Fourier-spectroscopy, and raster electronic microscopy were employed in investigations. It was established that the alteration of the phase composition of surface depends non-linearly on terms of treatment (dry or wet) and the number of electromagnetic impulses used and has appreciable influence on oxidation and hydrophobicity of minerals, thus allowing the selective separation of pyrite from arsenopyrite by flotation in the neutral medium. __________ Translated from Fiziko-Tekhnicheskie ProblemyRazrabotki Poleznykh Iskopaemykh, No. 5, pp. 105–118, September–October, 2008.     

氧化铅锌矿石浮选新药剂的应用研究

氧化铅锌矿石浮选新药剂的研究关系到大量复杂的氧化铅锌矿资源的开发利用。本文报导从氧化铅锌矿石中浮选硫化铅矿物的新捕收剂ＰＮ及相应的抑制剂ＢＤ_１。使用ＢＤ_１（５０ｇ／ｔ）和硫酸锌（０～４０ｇ／ｔ）配合作抑制剂,显著提高了硫化铅矿物浮选效率,从５５．５２％提高到６４．０３％,氧化铅浮选时,使用ＢＤ_２（０～１００ｇ／ｔ）和六偏磷酸钠（１００ｇ／ｔ）作抑制剂,碳酸铅矿物浮选效率从５３．１８％提高到５４．６５％;而氧化锌浮选时,使用ＢＤ_２（０～１００ｇ／ｔ）和六偏磷酸钠（５０ｇ／ｔ）作抑制剂取得了更明显的效果,碳酸锌矿物的浮选效率从６４．８１％提高到７２．２９％,锌粗选作业回收率８４．８１％,粗精矿中锌品位３０．５０％。可见,所研制的ＰＮ捕收剂和ＢＤ_１、ＢＤ_２抑制剂,对提高氧化铅锌矿石浮选指标起了重要作用。     

云南某复杂硫、氧混合铅锌矿浮选实验研究

对云南某地新开采硫、氧混合铅锌矿进行了浮选工艺实验研究。采用混合浮选硫化矿及氧化矿的工艺流程,获得了铅综合回收率85.18%、锌综合回收率95.46%的铅锌混合硫化精矿和氧化精矿,其中,硫化铅锌精矿中锌、铅品位分别为46.14%、7.86%; 氧化铅锌精矿中铅、锌品位分别为12.71%、6.01%。浮选所得精矿满足冶金过程对原料的要求。研究成果可为浮选此类矿物提供参考依据。