Journal of Mining and Metallurgy Section A Mining最新文献

Overview of technologies for Zn extraction from hyperaccumulating plants: Current state of research and future directions 超富集植物中锌提取技术综述:研究现状及未来发展方向

Journal of Mining and Metallurgy Section A Mining Pub Date : 2022-01-01 DOI: 10.5937/jmma2201029j

G. Jovanović, D. Ranđelović, B. Marković, M. Sokić

{"title":"Overview of technologies for Zn extraction from hyperaccumulating plants: Current state of research and future directions","authors":"G. Jovanović, D. Ranđelović, B. Marković, M. Sokić","doi":"10.5937/jmma2201029j","DOIUrl":"https://doi.org/10.5937/jmma2201029j","url":null,"abstract":"Phytomining, although predominantly in its early stages on the broader scientific scope of investigation, has garnered interest in metals such as Ni, Au, or rare earth elements (REE). However, Zn pollution from mine wastes, smelters, coal ash and other anthropogenic sources has become an environmental problem. Phytoremediation by hyperaccumulating plants is one of the proposed solutions to mitigate the pollution. Therefore, a need to utilize or dispose Zn hyperaccumulating plants occurred. Since studies of certain hyperaccumulating plant species have been previously conducted in order to extract metal products, similar hydrometallurgical and pyrometallurgical techniques were tried with Zn. The hydrometallurgical route was more focused on producing crude eco catalysts for organic chemistry or separating metal hydroxides by cementation. This was achieved with acid leaching of the ash which was obtained by calcinating the aboveground plant biomass. On the other hand, the pyrometallurgical route was more focused on safe and eco-friendly disposal of combustion products such as ash or biochar, while achieving zero toxic gaseous emissions from biomass pyrolysis. Regardless of the approach further research is needed to investigate the stabilization of metals that remain in the solid fraction during combustion and lowering the metal content in produced gases. So far, none of these technologies have been brought to a semi industrial scale and there is the potential of linking those two approaches together.","PeriodicalId":55719,"journal":{"name":"Journal of Mining and Metallurgy Section A Mining","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90209966","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}

引用次数: 1

Production of niobium: Overview of processes from the mine to products 铌的生产:从矿山到产品的工艺概述

Journal of Mining and Metallurgy Section A Mining Pub Date : 2022-01-01 DOI: 10.5937/jmma2201001h

Nascimento Do, Marques Cury, C. de, Malpass Pointer, R. Alves

引用次数: 0

Selection of collector composition and temperature conditions for diamond foam separation 金刚石泡沫分离的捕收剂组成及温度条件的选择

Journal of Mining and Metallurgy Section A Mining Pub Date : 2022-01-01 DOI: 10.5937/jmma2201021m

V. Morozov, E. Kovalenko, G. Dvoichenkova, I. Pestryak, S. Lezova

引用次数: 0

Evaluation of excavator energy consumption and overburden cutting resistance using multiple linear regression 利用多元线性回归评价挖掘机能耗和上覆土切割阻力

Journal of Mining and Metallurgy Section A Mining Pub Date : 2022-01-01 DOI: 10.5937/jmma2201039t

J. Trivan, S. Kostić

{"title":"Evaluation of excavator energy consumption and overburden cutting resistance using multiple linear regression","authors":"J. Trivan, S. Kostić","doi":"10.5937/jmma2201039t","DOIUrl":"https://doi.org/10.5937/jmma2201039t","url":null,"abstract":"In present paper the energy consumption of the excavator and overburden linear cutting resistance by invoking the multiple linear regression was examined. As a result, the corresponding models as nonlinear functions of physical and mechanical overburden properties: grain size, unit weight, cohesion, and friction angle, were proposed. The analysis was based on records made at ''Tamnava Eastern Field'' mine for the bucket-wheel excavator with new excavation teeth. The obtained results indicated that excavator energy consumption significantly depended on the grain size and cohesion, as individual factors, while the effect of two-factor interactions was particularly significant: clay percentage with cohesion and small grained sand fraction, and friction angle with medium grained sand and cohesion. On the other hand, linear cutting resistance of the overburden was largely controlled by all the examined physical and mechanical properties (grain size, unit weight, and shear strength), with the following significant two-factors interactions: shear strength parameters with all grain size fractions, different grain size fractions among each other, and friction angle with unit weight.","PeriodicalId":55719,"journal":{"name":"Journal of Mining and Metallurgy Section A Mining","volume":"1012 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77167548","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}

引用次数: 0

Intensification of diamond purification from hydrophilic minerals in foam separation process 泡沫分离过程中亲水矿物对金刚石提纯的强化作用

Journal of Mining and Metallurgy Section A Mining Pub Date : 2021-01-01 DOI: 10.5937/jmma2101019d

G. Dvoichenkova, V. Morozov, E. Kovalenko, Y. Podkamenny

引用次数: 1

Implication of geological domains data for modeling and estimating resources from Nkout iron deposit (South-Cameroun) 南喀麦隆Nkout铁矿地质域数据对资源建模与估算的意义

Journal of Mining and Metallurgy Section A Mining Pub Date : 2021-01-01 DOI: 10.5937/jmma2101001b

A.W. Boroh, K.Y. Sore-Gamo, Ngounouno Ayiwouo, Mbowou Gbambie, I. Ngounouno

{"title":"Implication of geological domains data for modeling and estimating resources from Nkout iron deposit (South-Cameroun)","authors":"A.W. Boroh, K.Y. Sore-Gamo, Ngounouno Ayiwouo, Mbowou Gbambie, I. Ngounouno","doi":"10.5937/jmma2101001b","DOIUrl":"https://doi.org/10.5937/jmma2101001b","url":null,"abstract":"This paper is devoted to determining whether the addition of geological information can improve the resource estimate of mineral resources. The geochemical data used come from 116 drill holes in the Nkout East iron deposit in southern Cameroon. These geochemical data are modeled on Surpac and Isatis softwares to represent the 3D geochemical distribution of iron in the deposit. Statistical analysis and then a variographic study is performed to study the spatial variability of iron. Estimation domains were defined based on the results of geological and geochemical analyses. Four domains were determined. These domains are the saprolitic domain in particular; the poor domain or fresh rocks such as amphibolites, granites, and gneisses; the rich domain or oxidized rocks (BIF) and the metasediment domain. Block modeling of the deposit is performed to estimate the resource. The grade of each block was estimated by using ordinary kriging and composites from each domain. This study also consisted of comparing two types of estimate, notably the domain estimate and the global estimate. The cross-validation made it possible to authenticate the obtained models. From this comparison, the domain estimation brings more precision the global estimate precisely on the error analysis while if we take into account the point clouds of the predicted and estimated values, the estimation by geochemical modeling provides the best results.","PeriodicalId":55719,"journal":{"name":"Journal of Mining and Metallurgy Section A Mining","volume":"107 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81395540","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}

引用次数: 1

Comparison of the influence of polyacrylamide and sodium oleate on selective flocculation of goethite from sludge 聚丙烯酰胺与油酸钠对污泥中针铁矿选择性絮凝效果的比较

Journal of Mining and Metallurgy Section A Mining Pub Date : 2021-01-01 DOI: 10.5937/jmma2101043t

Ljiljana Tankosić, S. Sredić

引用次数: 1

Effect of pyrolysis temperature on desulfurization performance of high organic sulfur low rank coal 热解温度对高有机硫低阶煤脱硫性能的影响

Journal of Mining and Metallurgy Section A Mining Pub Date : 2021-01-01 DOI: 10.5937/jmma2101027x

W. Xia, W. He, J. Sokolović

{"title":"Effect of pyrolysis temperature on desulfurization performance of high organic sulfur low rank coal","authors":"W. Xia, W. He, J. Sokolović","doi":"10.5937/jmma2101027x","DOIUrl":"https://doi.org/10.5937/jmma2101027x","url":null,"abstract":"The sulfur in coal not only influences the coke quality but also pollutes the environment during the combustion. The desulfurization of high organic sulfur coal is a key issue in coal cleaning science. As the pyrolysis has been used in low-rank coal conversion to obtain gas/liquid products and coal char, the desulfurization effects of pyrolysis on the low-rank coal with high organic sulfur requires further studies. This study investigated the desulfurization performance of high organic sulfur low-rank coal by the pyrolysis and the changes in the coal calorific value and sulfur forms during the pyrolysis. The XPS was applied to analyze the changing regulation of sulfur that forms on coal surface. The results indicated certain amount of FeS was newly created during the pyrolysis and high amounts of sulfate sulfur was transferred to pyrite sulfur and formed more FeS2 when compared to the distribution of raw coal. The total sulfur content of coal was reduced from 2.32% for raw coal to 1.68% for 700 °C pyrolysis coal and then the pyrolysis temperature had little effect on the sulfur content. The net calorific value (at constant volume and air-dry basis) was increased from 17.38 kJ for raw coal to 24.35 kJ for 700 °C pyrolysis coal. The pyrolysis temperature of 700 °C may be the best pyrolysis temperature for both low sulfur content and high calorific value.","PeriodicalId":55719,"journal":{"name":"Journal of Mining and Metallurgy Section A Mining","volume":"73 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88186719","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}

引用次数: 0

Acid mine drainages from copper mines in the southeast Serbia: Local problem with an international impact 塞尔维亚东南部铜矿的酸性矿井排水:具有国际影响的地方问题

Journal of Mining and Metallurgy Section A Mining Pub Date : 2021-01-01 DOI: 10.5937/jmma2101033s

V. Stanković, D. Božić, M. Gorgievski, G. Bogdanović, M. Zikic

引用次数: 0

The impact of high-power electromagnetic pulses on the surface state and technological properties of the calciferous minerals 大功率电磁脉冲对钙化矿物表面状态和工艺性质的影响

Journal of Mining and Metallurgy Section A Mining Pub Date : 2019-01-01 DOI: 10.5937/jmma1901045c

V. Chanturiya, Bunin I. Zh, M. Ryazantseva

引用次数: 0