International Journal of Mineral Processing最新文献

{"title":"Corrigendum to “Kinetic modeling and optimization of flotation process in a cyclonic microbubble flotation column using composite central design methodology” [Int. J. Miner. Proc. 15 (2016) 175-183]","authors":"Xiangning Bu , Guangyuan Xie , Yaoli Peng , Yuran Chen","doi":"10.1016/j.minpro.2017.02.011","DOIUrl":"10.1016/j.minpro.2017.02.011","url":null,"abstract":"","PeriodicalId":14022,"journal":{"name":"International Journal of Mineral Processing","volume":"169 ","pages":"Page 188"},"PeriodicalIF":0.0,"publicationDate":"2017-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.minpro.2017.02.011","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46558186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Competitive adsorption characteristics of rhenium in single and binary (Re-Mo) systems using Purolite A170","authors":"Mohammad Bagher Fathi,&nbsp;Bahram Rezai,&nbsp;Eskandar Keshavarz Alamdari","doi":"10.1016/j.minpro.2017.10.003","DOIUrl":"10.1016/j.minpro.2017.10.003","url":null,"abstract":"<div><p><span>In this study adsorption of rhenium ions from single and bi-component solutions (Re-Mo) by Purolite A170 was studied experimentally and described by isotherm, kinetic and thermodynamic modeling. Considering coefficient of determination (R</span>²<span>) and values of root mean squared error (RMSE) for the multicomponent isotherms, the extended model of Freundlich isotherm was found to be successful. Moreover, fitting the time-dependent data into different mechanisms showed that the data comply well with the pseudo-second order model. Results from the binary systems demonstrated that the presence of the secondary metal ions in the system causes a decrease in the adsorption capacity of rhenium, which is mainly due to the competitive effects of metals for adsorption sites. Furthermore, evaluation of thermodynamic parameters showed that the reaction mechanisms are different for both systems; however, due to negative values of ΔH, in competitive condition the adsorption of rhenium becomes more feasible with increasing the temperature.</span></p></div>","PeriodicalId":14022,"journal":{"name":"International Journal of Mineral Processing","volume":"169 ","pages":"Pages 1-6"},"PeriodicalIF":0.0,"publicationDate":"2017-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.minpro.2017.10.003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48348593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flotation separation of scheelite from calcite using mixed collectors","authors":"Weiping Yan ,&nbsp;Cheng Liu ,&nbsp;Guanghua Ai ,&nbsp;Qiming Feng ,&nbsp;Wencai Zhang","doi":"10.1016/j.minpro.2017.10.009","DOIUrl":"10.1016/j.minpro.2017.10.009","url":null,"abstract":"<div><p><span>Flotation<span><span> separation of scheelite from </span>calcite<span> is difficult due to the similarities in their surface properties. In this work, the flotation behavior of scheelite and calcite using oxidized paraffin soap (OPS), benzohydroxamic acid (BHA) and the mixed OPS/BHA collectors was investigated through micro-flotation experiments. The flotation results of single mineral experiments demonstrated a higher selectivity for the flotation of scheelite from calcite at pH</span></span></span> <span>9 than individual OPS and BHA when using water glass as depressant. In order to probe the validity of the findings, mixed binary minerals experiments, contact angle and zeta potential experiments were also carried out successfully.</span></p></div>","PeriodicalId":14022,"journal":{"name":"International Journal of Mineral Processing","volume":"169 ","pages":"Pages 106-110"},"PeriodicalIF":0.0,"publicationDate":"2017-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.minpro.2017.10.009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43628305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fractional calculus application for diffusion controlled leaching column testing","authors":"A. Jaques ,&nbsp;C. Da Silva ,&nbsp;N. Duru ,&nbsp;T. Seal","doi":"10.1016/j.minpro.2017.09.007","DOIUrl":"10.1016/j.minpro.2017.09.007","url":null,"abstract":"<div><p>Fractional calculus is a generalization of the traditional calculus approach. In this research, column leaching test results are modeled by using the rate equation obtained by fractional calculus and compared to the traditional mass transfer equation model. By analyzing the adjusted determination coefficient, it is demonstrated that the proposed fractional model describes the extracted recovery percentage better than traditional equations. This analysis supports the utilization of the new model without over-parameterization. The present work brings a new point of view in mass transfer modelling of column leach testing, and therefore reformulates the existing models based on classic transport phenomena, leading to better understanding of the mineral leaching process.</p></div>","PeriodicalId":14022,"journal":{"name":"International Journal of Mineral Processing","volume":"169 ","pages":"Pages 185-187"},"PeriodicalIF":0.0,"publicationDate":"2017-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.minpro.2017.09.007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45083077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Processing of coal fly ash magnetic spheres for clay water flocculation","authors":"Jianjun Li ,&nbsp;Jinbo Zhu ,&nbsp;Shangyuan Qiao ,&nbsp;Zhenwei Yu ,&nbsp;Xiaolin Wang ,&nbsp;Yin Liu ,&nbsp;Xiangrui Meng","doi":"10.1016/j.minpro.2017.11.006","DOIUrl":"10.1016/j.minpro.2017.11.006","url":null,"abstract":"<div><p><span><span><span>The application of coal fly ash magnetic spheres (MSs) in water treatment is limited due to their complex mineral compositions, low magnetism, and large diameters. In this study, MSs were carefully ball milled and magnetically separated to improve their related properties. After the processing, the resultant magnetic ball-milled MSs (MBMSs) show a substantial change in composition, magnetism, and surface property in addition to a decrease in diameter. Compared with those of the original MSs, the Fe percentage, magnetism, and specific surface area of MBMSs are increased by 25.87%, 54.60%, and 810%, respectively. Dispersive spectrometer mapping investigation shows segregated high- and low-Fe areas with different structures in MS. These different structures enable purification. Highly turbid </span>clay water </span>flocculation<span> experiments using MSs as flocculants<span> indicate that MBMSs can cause fast flocculation whereas the compared samples exert less or slight flocculation effect. Zeta potential investigation suggests that the different flocculation effects are due to the change in the point of zero charge (pH</span></span></span>_PZC). The pH_PZC increases from 3.91 for the original MS to 4.96 for MBMS. The reduction in the diameter, as well as the increase in magnetism, surface area, and pH_PZC, makes MSs applicable to water treatment.</p></div>","PeriodicalId":14022,"journal":{"name":"International Journal of Mineral Processing","volume":"169 ","pages":"Pages 162-167"},"PeriodicalIF":0.0,"publicationDate":"2017-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.minpro.2017.11.006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41557976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characteristics of bio-desilication and bio-flotation of Paenibacillus mucilaginosus BM-4 on aluminosilicate minerals","authors":"Jiangman Zhao,&nbsp;Weijin Wu,&nbsp;Xu Zhang,&nbsp;Minglong Zhu,&nbsp;Wensong Tan","doi":"10.1016/j.minpro.2017.09.002","DOIUrl":"10.1016/j.minpro.2017.09.002","url":null,"abstract":"<div><p><span>World reserves of bauxite<span> include vast quantities of ore which are sub-economic due to high levels of reactive silica. It would lead to the substantial loss of caustic soda during Bayer processing. With the gradual reduction of the economic reserves of high-grade ore, people began to focus on the desiliconization treatment of the low-grade ore at reasonable cost. Biodesilication by silicate bacteria (such as </span></span><em>Paenibacillus mucilaginosus</em><span>) has been known as a potential technology for its characteristics of environmental protection, energy saving and sustainable development. In this paper, one silicate bacterial isolate with high desilication ability was screened, identified, and named as </span><em>Paenibacillus mucilaginosus</em> BM-4. The optimum cultural pH and temperature of BM-4 were also determined experimentally as 8.0 and 30<!--> <span>°C, respectively. Under these optimum cultural conditions, silicate ores were bioleached by BM-4. It seems that the stratified structures silicate ores, such as kaolinite and chlorite, were more readily to be leached by BM-4.</span></p><p><span><span>On the other hand, the float-abilities of BM-4 on kaolinite and bauxite were also investigated. With the experimental results shown that there existed the electrostatic adsorption process between BM-4 and kaolinite, and the Langmuir isotherm adsorption process between BM-4 and bauxite. It was observed that the float-abilities of bauxite were significantly depressed by BM-4, while the those of kaolinite were enhanced. The </span>bioflotation test of the mixture of bauxite and kaolinite (mass ratio 5:1) through BM-4 were carried out by a modified Hallimond tube. With results shown that the Al/Si ratios of this mixed minerals were improved from 3.05 to 8.60 after bacterial conditioning due to bauxite depression. Eventually, 83.0% of Al</span>₂O₃ were recovered from the mixed minerals by BM-4.</p></div>","PeriodicalId":14022,"journal":{"name":"International Journal of Mineral Processing","volume":"168 ","pages":"Pages 40-47"},"PeriodicalIF":0.0,"publicationDate":"2017-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.minpro.2017.09.002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46335063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Secondary yttrium from spent fluorescent lamps: Recovery by leaching and solvent extraction","authors":"Valentina Innocenzi,&nbsp;Ida De Michelis,&nbsp;Francesco Ferella,&nbsp;Francesco Vegliò","doi":"10.1016/j.minpro.2017.09.017","DOIUrl":"10.1016/j.minpro.2017.09.017","url":null,"abstract":"<div><p><span>The separation of yttrium and calcium from acid leach liquor obtained from leaching of fluorescent lamp phosphors has been investigated by solvent extraction with D2EHPA and Cyanex 272 in kerosene. The preliminary tests suggested that D2EHPA was more efficient than Cyanex 272 for separation of yttrium. The experimental tests allowed to define the best process conditions, among those investigated, to separate and recover yttrium selectively. The best separation circuit included three-stage cross current extraction with 20%v/v D2EHPA in kerosene (O/A</span> <!-->=<!--> <span>1/1, room temperature, 10 min of contact, pH 0.02) and stripping step in counter current with 1.5</span> <span>M sulfuric acid (O/A</span> <!-->=<!--> <!-->1/1, room temperature, 30<!--> <span>min of contact). After stripping, yttrium was recovered as oxalate by the addition of oxalic acid. According to the experimental results, a hydrometallurgical process was developed. The final recovery from leach liquor was around 90% and the grade of the final product was 97.5% as hydrated yttrium oxalate. The main impurity was sulfur, 1.28% wt, in addition to traces of other elements such as Si (0.057% wt), Zn (0.015% wt), Eu (0.14% wt) and Fe (0.02% wt).</span></p></div>","PeriodicalId":14022,"journal":{"name":"International Journal of Mineral Processing","volume":"168 ","pages":"Pages 87-94"},"PeriodicalIF":0.0,"publicationDate":"2017-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.minpro.2017.09.017","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43197720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental characterization of the influence of solid components on the rheological and mechanical properties of cemented paste backfill","authors":"Xuejie Deng ,&nbsp;Jixiong Zhang ,&nbsp;Bern Klein ,&nbsp;Nan Zhou ,&nbsp;Benjamin deWit","doi":"10.1016/j.minpro.2017.09.019","DOIUrl":"10.1016/j.minpro.2017.09.019","url":null,"abstract":"<div><p>As an experimental study, the research in this paper was conducted to illustrate the influence of solids content and composition of cemented paste backfill (CPB) on the material's rheological and mechanical characteristics. A new type of CPB was used in this research, which was composed of waste rock as coarse aggregates, fly ash as fines, lime slag as activator proportions and ordinary Portland cement as binder. The mechanical strength of CPB improved significantly with an increase in the solids content, but the workability decreased because the water content decreased. When the solids content was 75% by weight (wt.%), the slump value was 165<!--> <span>mm, which met the requirement for pumping. At a solids content of 75%, the CPB also had an unconfined compressive strength (UCS) of 1.83</span> <span>MPa, tensile strength of 0.401</span> <span>MPa, and Poisson's ratio of 0.136 at a curing time of 28</span> <!-->days. Increasing the fly ash proportion caused the workability and mechanical strength of the CPB to increase until they reached maximum values, at which point subsequent increases caused the values to decrease. The workability of CPB reached its peak when fly ash proportion was 35<!--> <!-->wt.%, and the mechanical strength reached its peak at 45<!--> <!-->wt.%. The workability of CPB decreased as the lime slag proportion increased. The strength of CPB also increased with an increase in the lime slag proportion, however, only until it reached 12<!--> <!-->wt.%, at which point the strength began to decline. The addition of more cement resulted in much better mechanical performance of the CPB samples, especially with longer curing times. However, workability of CPB increased as cement portion increased in the range of 0% to 2.5%, before decreasing over the range of 2.5%–5.0%.</p></div>","PeriodicalId":14022,"journal":{"name":"International Journal of Mineral Processing","volume":"168 ","pages":"Pages 116-125"},"PeriodicalIF":0.0,"publicationDate":"2017-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.minpro.2017.09.019","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47168138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Centrifugal high gradient magnetic separation of fine ilmenite","authors":"Jianwu Zeng,&nbsp;Luzheng Chen,&nbsp;Ruoyu Yang,&nbsp;Xiong Tong,&nbsp;Peng Ren,&nbsp;Yongming Zheng","doi":"10.1016/j.minpro.2017.09.005","DOIUrl":"https://doi.org/10.1016/j.minpro.2017.09.005","url":null,"abstract":"<div><p><span>High gradient magnetic separation (HGMS) has been an effective method for the concentration or removal of fine para-magnetic particles from suspension, but its powerful magnetic capture to magnetic particles results in the mechanical entrainment of non-magnetic particles in magnetic product, and thus reduces the separation selectivity. HGMS in centrifugal field (CHGMS) is proposed to improve the separation selectivity, and in this investigation a cyclic pilot-scale CHGMS separator was used to concentrate fine </span>ilmenites<span> from slurry. The theoretical descriptions on this CHGMS process indicate that the introduction of centrifugal field in the HGMS field has a promoting effect on the magnetic capture of matrix to magnetic particles and significantly improves the HGMS performance, and a minimum critical magnetic field force is required for the capture of magnetic particles in the centrifugal field. These theoretical descriptions were experimentally verified and the dependence of CHGMS performance on the key parameters such as centrifugal acceleration was determined. This CHGMS method has achieved a significantly improved separation selectivity and performance to the fine ilmenite, and thus provided a potential prospect in the development of CHGMS technology.</span></p></div>","PeriodicalId":14022,"journal":{"name":"International Journal of Mineral Processing","volume":"168 ","pages":"Pages 48-54"},"PeriodicalIF":0.0,"publicationDate":"2017-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.minpro.2017.09.005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136484590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Non-polar oil assisted DDA flotation of quartz II: Effect of different polarity oil components on the flotation of quartz","authors":"An Liu ,&nbsp;Min-qiang Fan ,&nbsp;Zhi-hong Li ,&nbsp;Jin-chuan Fan","doi":"10.1016/j.minpro.2017.09.003","DOIUrl":"10.1016/j.minpro.2017.09.003","url":null,"abstract":"<div><p><span>It is well accepted that non-polar oils can be used as collector extender in oil agglomeration<span><span> flotation of many different types of mineral. In this paper, in order to study the influences of oil structures on the non-polar oil assisted dodecylamine (DDA) flotation of quartz, the research focuses on the interaction of DDA (collector) and non-polar oil (collector extender) in aqueous phase. In this work, saturated hydrocarbon dodecane and </span>cyclohexane<span>, unsaturated hydrocarbon dodecene, aromatic hydrocarbon dimethylbenzene and 1-methylnaphthalene were chosen as researched subjects, and the influences of oil structures on interfacial activity of oil–DDA–water ternary models were investigated by experimental and theoretical methods. The flotation results demonstrated that the collecting capability of the oil and DDA combination follows the order of 1-methylnaphthalene</span></span></span> <!-->&gt;<!--> <!-->dimethylbenzene<!--> <!-->&gt;<!--> <!-->dodecene<!--> <!-->&gt;<!--> <!-->cyclohexane<!--> <!-->&gt;<!--> <span><span>dodecane. Moreover, molecular dynamic (MD) simulation is performed to investigate the interfacial property of these five non-polar oil-DDA-water systems, and five parameters, radial distribution functions, interaction energy, density distribution, interfacial thickness and self-diffusion coefficient are proposed to reveal the influence mechanism of molecular structure on interfacial activity of the ternary oil-DDA-water systems. The same trends are obtained from the parameters described above, aromatic hydrocarbon dimethylbenzene and 1-methylnaphthalene performance better than saturate hydrocarbon and unsaturated hydrocarbon. The researched results indicate the interaction between non-polar oil and DDA hydrophobic alkyl tail would enhance the mobility of oil component, which induce significant change of interfacial thickness and </span>diffusivity<span>. Additionally, the interaction between DDA hydrophilic head group and water molecules via strong hydrogen bonds, van der Waals interactions and weak electrostatic attraction would lead to water molecules penetrate through DDA monolayer and adsorb on oil surface. The researches enable us to obtain a deeper microscopic-level understanding of the interaction between oil-DDA-water ternary components, and maybe have some references for designing of oil-assisted flotation agent.</span></span></p></div>","PeriodicalId":14022,"journal":{"name":"International Journal of Mineral Processing","volume":"168 ","pages":"Pages 25-34"},"PeriodicalIF":0.0,"publicationDate":"2017-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.minpro.2017.09.003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44749088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}