Transactions of Nonferrous Metals Society of China最新文献_第6页

Recovery of polymetallic elements from cyanide tailings via reduction smelting 还原熔炼法回收氰化尾矿中的多金属元素

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2025-03-01 DOI: 10.1016/S1003-6326(24)66728-2

Gong-hao LI, Fen JIAO, Chen LI, Si-yu GU, Shi-yang LIU, Xin WEI

{"title":"Recovery of polymetallic elements from cyanide tailings via reduction smelting","authors":"Gong-hao LI, Fen JIAO, Chen LI, Si-yu GU, Shi-yang LIU, Xin WEI","doi":"10.1016/S1003-6326(24)66728-2","DOIUrl":"10.1016/S1003-6326(24)66728-2","url":null,"abstract":"<div><div>A process for treating cyanide tailings was proposed. The process essentially implicates reduction smelting which involves volatilizing silver, lead, and zinc in the cyanide tailings at high temperatures. Meanwhile, gold and copper combine with the reduced iron to form a metal phase, allowing for the simultaneous recovery of polymetallic elements. The experimental results indicate that the process works optimally with a coke powder of 7.5 wt.%, an alkalinity of 1.0, a melting temperature of 1450 °C, and a melting time of 60 min. Under these conditions, more than 99% of gold, 77% of copper and 94% of iron are incorporated into pig iron. In the meantime, the volatilization rate of silver exceeds 90%, while lead and zinc are essentially completely volatilized. The primary component of the by-product smelting slag is akermanite, which exhibits lower leaching toxicity than the national standard and belongs to general solid waste. Additionally, taking the trapping process of iron to copper as a case study, the mechanism of iron trapping is methodically examined and divided into three processes: smelting reduction, migration capture, and condensation deposition.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 3","pages":"Pages 975-989"},"PeriodicalIF":4.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143842872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving mechanical properties of extrusion additive manufacturing WC−9Co cemented carbide via green warm isostatic pressing 采用绿色温等静压技术提高WC−9Co硬质合金的力学性能

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2025-03-01 DOI: 10.1016/S1003-6326(24)66722-1

Cai CHEN , Run-xing ZHOU , Zu-ming LIU , Yong-xia LI , Dan ZOU , Yi-ming CHANG , Xu-lin CHENG

{"title":"Improving mechanical properties of extrusion additive manufacturing WC−9Co cemented carbide via green warm isostatic pressing","authors":"Cai CHEN , Run-xing ZHOU , Zu-ming LIU , Yong-xia LI , Dan ZOU , Yi-ming CHANG , Xu-lin CHENG","doi":"10.1016/S1003-6326(24)66722-1","DOIUrl":"10.1016/S1003-6326(24)66722-1","url":null,"abstract":"<div><div>To tackle the common issue of green defects in material extrusion (MEX) additive manufacturing (AM) cemented carbides, warm isostatic pressing (WIP) was introduced to eliminate defects of MEX WC−9Co cemented carbide greens, thereby improving both microstructure uniformity and mechanical properties of sintered bodies. The results indicate that WIP reduces defects in MEX greens, thus decreasing the dimensions and numbers of defects, modifying shapes of pores within sintered bodies, while preserving surface quality and shape characteristics. Compared with WC−9Co prepared via MEX followed by debinding and sintering (DS), the hardness of WC−9Co prepared using MEX−WIP−DS does not change significantly, ranging HV<sub>30</sub> 1494−1508, the transverse rupture strength increases by up to 49.3%, reaching 2998−3514 MPa, and the fracture toughness remains high, ranging 14.8−17.0 MPa·m<sup>1/2</sup>. The mechanical properties surpass comparable cemented carbides fabricated through other AM methods and are comparable to those produced by powder metallurgy. The integration of green WIP into MEX−DS broadens the MEX processing window, and improves the overall mechanical properties of MEX AM WC−Co cemented carbides.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 3","pages":"Pages 902-920"},"PeriodicalIF":4.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143842768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In-situ reduction mechanism of hematite by bastnaesite during suspension magnetization roasting 氟碳铈矿悬浮磁化焙烧过程中赤铁矿的原位还原机理

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2025-03-01 DOI: 10.1016/S1003-6326(24)66727-0

Wen-bo LI , Shao-kai CHENG , Rui QU , Ji-jia CHEN

{"title":"In-situ reduction mechanism of hematite by bastnaesite during suspension magnetization roasting","authors":"Wen-bo LI , Shao-kai CHENG , Rui QU , Ji-jia CHEN","doi":"10.1016/S1003-6326(24)66727-0","DOIUrl":"10.1016/S1003-6326(24)66727-0","url":null,"abstract":"<div><div>To explore the spontaneous magnetization of iron-bearing rare earth ores during suspension roasting, binary minerals containing hematite and bastnaesite were used to investigate the effects of the roasting temperature, roasting time, and bastnaesite-to-hematite mass ratio on in-situ reduction of hematite in a N<sub>2</sub> atmosphere. Relevant analytical tests were used to explore the mineral phase evolution during roasting, the magnetism and microstructure of the roasted products, the phase composition, and the surface element valence of concentrate. It was found that magnetic separation of the iron concentrate afforded an iron grade of 68.87% and a recovery of 93.18% under the optimum roasting conditions. During roasting, bastnaesite decomposed to generate CO<sub>2</sub> and CO, and the compact structure of hematite was gradually destroyed, resulting in microcracks. Subsequently, the CO entered the surface of the hematite through the microcracks and reacted to form a magnetite shell, and the magnetite-encapsulated hematite particles were recovered via low-intensity magnetic separation.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 3","pages":"Pages 965-974"},"PeriodicalIF":4.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143842774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Hf and Ta on creep deformation behaviors of PM Ni-based superalloys Hf和Ta对PM - ni基高温合金蠕变行为的影响

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2025-03-01 DOI: 10.1016/S1003-6326(24)66718-X

Hao-peng ZHANG , Jia-ming BAI , Xin-yu LI , Xiao-kun LI , Jian JIA , Jian-tao LIU , Yi-wen ZHANG

{"title":"Effect of Hf and Ta on creep deformation behaviors of PM Ni-based superalloys","authors":"Hao-peng ZHANG , Jia-ming BAI , Xin-yu LI , Xiao-kun LI , Jian JIA , Jian-tao LIU , Yi-wen ZHANG","doi":"10.1016/S1003-6326(24)66718-X","DOIUrl":"10.1016/S1003-6326(24)66718-X","url":null,"abstract":"<div><div>Four powder metallurgy (PM) Ni-based superalloys with different Hf and Ta contents were creep-tested at 650 °C and 970 MPa, 700 °C and 770 MPa, and 750 °C and 580 MPa, respectively. The effect of Hf and Ta on creep deformation behaviors of the superalloys was studied from multiple scales by SEM, electron backscatter diffraction (EBSD), and aberration-corrected scanning transmission electron microscope (AC-STEM). The results showed that Hf and Ta suppressed the intergranular fracture and initiation of cracks during the acceleration creep stage, which prolonged the creep rupture time. Hf and Ta inhibited the stacking faults extending and the dislocation climbing and promoted the Suzuki segregation of W during the steady-state creep stage, which reduced the minimum creep rate and delayed the start time of the acceleration creep stage. The Suzuki segregation of Co, Cr, Mo, Ti, Nb, W, and Ta along stacking faults was observed after Hf and Ta addition, leading to the localized phase transformation in the <em>γ′</em> phase, and the stacking fault phase was chemically disordered. This study provided ideas for the composition design of novel PM Ni-based superalloys and theoretical foundations for the combined addition of Hf and Ta.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 3","pages":"Pages 849-862"},"PeriodicalIF":4.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143842764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Wire arc additive manufacturing of Al−Si−Mg aluminum alloy through wire−powder synchronous deposition 采用线粉同步沉积法制备Al - Si - Mg铝合金

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2025-03-01 DOI: 10.1016/S1003-6326(24)66709-9

Yun-fei MENG , Qian-xi YU , Xu WU , Ming GAO , Hui CHEN

{"title":"Wire arc additive manufacturing of Al−Si−Mg aluminum alloy through wire−powder synchronous deposition","authors":"Yun-fei MENG , Qian-xi YU , Xu WU , Ming GAO , Hui CHEN","doi":"10.1016/S1003-6326(24)66709-9","DOIUrl":"10.1016/S1003-6326(24)66709-9","url":null,"abstract":"<div><div>Owing to the lack of matching commercial welding wires, the development of wire arc additive manufacturing (WAAM) for most aluminum alloys is hindered. A wire−powder synchronous arc additive manufacturing (WPAAM) was proposed to prepare the target Al−Si−Mg aluminum alloy. Based on the synchronous deposition of AlSi<sub>12</sub> wire and pure Mg powder, the deposition width of the WPAAMed thin-wall was increased by 61% compared with that of WAAMed thin-wall using AlSi<sub>12</sub> wire, and the machining allowance was reduced by 81%. The added Mg powder benefited to form refined equiaxed grains, and reduced the average grain size of the WPAAMed thin-wall to 47.1 µm, showing a decrease of 23.8% relatively to that of the WAAMed thin-wall. Besides, Mg reacted with Si to form Mg<sub>2</sub>Si strengthening phases. The mechanical properties tests showed that the ultimate tensile strength and elongation of the WPAAMed thin-wall increased up to 174.5 MPa and 4.1%, reaching 92% and 60% those of the WAAMed thin-wall, respectively.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 3","pages":"Pages 701-714"},"PeriodicalIF":4.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143842876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of hierarchical cell structure and internal pores on mechanical properties of thixomolded AZ91D magnesium alloy 层状细胞结构和内部气孔对触模AZ91D镁合金力学性能的影响

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2025-03-01 DOI: 10.1016/S1003-6326(24)66712-9

Li-dong GU , Xiao-qing SHANG , Jie WANG , Jun-jun DENG , Zhen ZHAO , Xiao-qin ZENG

{"title":"Effect of hierarchical cell structure and internal pores on mechanical properties of thixomolded AZ91D magnesium alloy","authors":"Li-dong GU , Xiao-qing SHANG , Jie WANG , Jun-jun DENG , Zhen ZHAO , Xiao-qin ZENG","doi":"10.1016/S1003-6326(24)66712-9","DOIUrl":"10.1016/S1003-6326(24)66712-9","url":null,"abstract":"<div><div>A comprehensive analysis of the microstructure and defects of a thixomolded AZ91D alloy was conducted to elucidate their influences on mechanical properties. Samples were made at injection temperatures ranging from 580 to 640 °C. X-ray computed tomography was used to visualize pores, and crystal plasticity finite element simulation was adopted for deformation analysis. The microstructure characterizations reveal a hierarchical cell feature composed of <em>α</em>-Mg and eutectic phases. With the increase of injection temperature, large cell content in the material decreases, while the strength of the alloy increases. The underlying mechanism about strength change is that coarse-grained solids experience smaller stress even in hard orientations. The sample fabricated at a moderate temperature of 620 °C exhibits the highest elongation, least quantity and lower local concentration of pores. The detachment and tearing cracks formed at lower injection temperature and defect bands formed at higher injection temperature add additional crack sources and deteriorate the ductility of the materials.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 3","pages":"Pages 749-764"},"PeriodicalIF":4.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143842879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Kinetic study of ultrasonic-assisted vanadium(V) adsorption by supported bifunctionalizedized ionic liquid 负载型双官能化离子液体超声辅助钒吸附动力学研究

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2025-03-01 DOI: 10.1016/S1003-6326(24)66730-0

Jia-hao ZHOU , Shen-xu BAO , Yi-min ZHANG , Bo CHEN , Yu LIANG , Xiao-chuan HOU , Si-yuan YANG , Yang PING

{"title":"Kinetic study of ultrasonic-assisted vanadium(V) adsorption by supported bifunctionalizedized ionic liquid","authors":"Jia-hao ZHOU , Shen-xu BAO , Yi-min ZHANG , Bo CHEN , Yu LIANG , Xiao-chuan HOU , Si-yuan YANG , Yang PING","doi":"10.1016/S1003-6326(24)66730-0","DOIUrl":"10.1016/S1003-6326(24)66730-0","url":null,"abstract":"<div><div>The adsorption kinetics of polystyrene [1-butyl-3-methylimidazolium][bis(2,4,4-trimethylpentyl)phosphinate] (PS[C<sub>4</sub>mim][C272]) towards V(V) in acidic leachate was explored under ultrasound. The effects of ultrasonic power and V(V) concentration on the adsorption performance of PS[C<sub>4</sub>mim][C272] were investigated. The results showed that ultrasonic radiation significantly shortened the adsorption equilibrium time and improved the adsorption performance of PS[C<sub>4</sub>mim][C272] compared with the conventional oscillation. At an ultrasonic power of 200 W, the equilibrium adsorption capacity of PS[C<sub>4</sub>mim][C272] reached its maximum of 311.58 mg/g. The kinetic model fitting results showed that the adsorption process of PS[C<sub>4</sub>mim][C272] strictly followed the pseudo-second-order kinetic model under ultrasound. Analysis using the shrinking core model and the Weber−Morris model showed that the adsorption process of PS[C<sub>4</sub>mim][C272] was primarily controlled by intra-particle diffusion mechanism. The adsorption isotherm model study showed that the Langmuir isotherm model could effectively fit the adsorption process of PS[C<sub>4</sub>mim][C272] under ultrasound.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 3","pages":"Pages 1000-1016"},"PeriodicalIF":4.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143842874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrochemical behavior and discharge performance of as-rolled precipitate-free Mg−Sn alloy as anode for Mg−air batteries 镁-空气电池负极轧制无沉淀Mg - Sn合金的电化学行为和放电性能

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2025-03-01 DOI: 10.1016/S1003-6326(24)66717-8

Xu LI , Wei-li CHENG , Jian LI , Fei-er SHANGGUAN , Hui YU , Li-fei WANG , Hang LI , Hong-xia WANG , Jin-hui WANG , Hua HOU

引用次数: 0

Creep-fatigue lifetime prediction of GH720Li superalloy considering effect of grain size 考虑晶粒尺寸影响的GH720Li高温合金蠕变疲劳寿命预测

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2025-03-01 DOI: 10.1016/S1003-6326(24)66719-1

Bin ZHANG , Rong-qiao WANG , Dian-yin HU , Hong-bo LI , Kang-he JIANG , Jia-ming WEI , Hong ZHANG

引用次数: 0

Selective flotation separation of ilmenite from titanaugite using n-octylphosphonic acid as collector in acidic pulp 正辛基膦酸捕收剂在酸性矿浆中选择性浮选分离钛铁矿和钛辉矿

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2025-03-01 DOI: 10.1016/S1003-6326(24)66726-9

Pan CHEN , Jia-yan LIU , Ji-hua ZHAI , Yao-hui YANG , Wei SUN

{"title":"Selective flotation separation of ilmenite from titanaugite using n-octylphosphonic acid as collector in acidic pulp","authors":"Pan CHEN , Jia-yan LIU , Ji-hua ZHAI , Yao-hui YANG , Wei SUN","doi":"10.1016/S1003-6326(24)66726-9","DOIUrl":"10.1016/S1003-6326(24)66726-9","url":null,"abstract":"<div><div>n-octylphosphonic acid (OPA) was introduced as a novel collector for ilmenite flotation and its effectiveness was compared with the conventional chelating collector, benzohydroxamic acid (BHA). Micro-flotation tests demonstrated that OPA was a highly effective and selective collector for separating ilmenite from titanaugite over acidic conditions (optimal pH around 3), which was also supported by adsorption amount measurements. X-ray photoelectron spectroscopy (XPS) tests indicated that the chemisorption of OPA onto ilmenite surface was much stronger than that of BHA. Solution chemistry diagram analyses indicated that OPA could dissociate well at pH 3.0 and mostly exist in anion form. DFT calculations further confirmed that OPA was much easier to adsorb onto ilmenite surface with shorter bond length and lower adsorption energy in comparison with BHA. Therefore, OPA maintained good collecting ability and selectivity for ilmenite flotation in the strongly acidic pulp, providing valuable insights into new collector design and development.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 3","pages":"Pages 954-964"},"PeriodicalIF":4.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143842773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0