Metallurgist最新文献

Structure and wear resistance of thin coatings of the Cu-Mo system obtained by magnetron sputtering of pressed targets 压靶磁控溅射制备Cu-Mo体系薄膜的结构和耐磨性

IF 0.9 4区材料科学

Metallurgist Pub Date : 2026-10-12 DOI: 10.1007/s11015-026-02144-1

M. Yu. Slezko, V. V. Ovchinnikov, M. A. Babuev

引用次数: 0

Development of the integrated processing solutions for carbonaceous gold ores 碳质金矿综合处理方案的开发

IF 0.9 4区材料科学

Metallurgist Pub Date : 2026-10-12 DOI: 10.1007/s11015-026-02148-x

A. V. Byvaltsev

{"title":"Development of the integrated processing solutions for carbonaceous gold ores","authors":"A. V. Byvaltsev","doi":"10.1007/s11015-026-02148-x","DOIUrl":"10.1007/s11015-026-02148-x","url":null,"abstract":"<div>Processing of carbonaceous gold ores with high preg-robbing activity (PRA) remains one of the most complicated challenges in hydrometallurgy. These ores may actively adsorb dissolved gold, which significantly reduces the efficiency of conventional cyanidation procedures. We focus our attention on the ore taken from a deposit in the Russian Far East, containing 1.2–1.6 g/ton gold and characterized by a high PRA of 87–98% (according to the Irgiredmet method). We performed a series of comprehensive tests, including laboratory, pilot, and semi-commercial tests, carried out with an aim to develop a flexible combined process flowsheet. These studies included the gravity and flotation enrichment with the use of special carbon-suppressing reagents, gravity-flotation recleaning of concentrates, carbon-in-leach (CIL) cyanidation with an addition of diesel fuel, and high-temperature treatment of CIL tailings. The applied set of analytic methods is quite large and includes fire assay, atomic absorption spectroscopy (AAS), phase and X-ray fluorescence (XRF) analyses, infrared (IR) and X-ray diffraction (XRD) analyses, as well as PRA testing. The developed two-stage gravity enrichment made it possible to get 63.76% gold recovery. The application of additional procedures of flash and conventional flotation increased the level of recovery up to 87.99%; while the procedure of flotation concentrate cleaning reduced PRA from 88.2% down to 62.6–70.6%. In the CIL process, 0.3 kg/ton of diesel fuel additionally suppressed PRA, achieving the level of ∼80% for the operational gold recovery and 82.06% for the total recovery. The procedure of high-temperature treatment of tailings recovered an extra amount of gold (0.7 g/ton), thus raising the overall recovery to 83.17%. The developed flowsheet demonstrates the efficiency of the integrated approach to processing unyielding low-grade preg-robbing ores and gives relatively high levels of gold recovery for low consumption of reagents. Process design criteria were developed for the design of gold-ore-processing plants.</div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"70 1","pages":"159 - 167"},"PeriodicalIF":0.9,"publicationDate":"2026-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Production of wear-resistant boride cermets based on high-entropy CoCrCuFeNi alloy by hot pressing 热压法制备高熵CoCrCuFeNi合金耐磨硼化物陶瓷

IF 0.9 4区材料科学

Metallurgist Pub Date : 2026-10-09 DOI: 10.1007/s11015-026-02145-0

A. D. Fedotov, S. K. Mukanov, S. I. Rupasov, P. A. Loginov, E. A. Levashov

{"title":"Production of wear-resistant boride cermets based on high-entropy CoCrCuFeNi alloy by hot pressing","authors":"A. D. Fedotov, S. K. Mukanov, S. I. Rupasov, P. A. Loginov, E. A. Levashov","doi":"10.1007/s11015-026-02145-0","DOIUrl":"10.1007/s11015-026-02145-0","url":null,"abstract":"<div>This study is devoted to the production of ceramic matrix composite materials based on borides with a binder made of a high-entropy alloy CoCrCuFeNi using powder metallurgy methods. The composite materials were synthesized by hot pressing of powder mixtures after high-energy ball milling in planetary centrifugal mills. The ceramic matrix of the composites was based on borides (Cr4B, Cr2B, CrB, and Ni3B), while the metallic binder consisted of a solid solution of all metallic components, with a face-centered cubic crystal lattice. The resulting boride-based cermets are characterized by a combination of high hardness, strength, and ductility. With a boron content of up to 20 wt. %, the cermets were comparable in strength to the high-entropy alloy CoCrCuFeNi (1600 MPa) with a hardness of up to 8.34 GPa. The wear resistance of the developed cermets correlates with the boron content and the proportion of boride phases. Samples with a boron content of 40–50 wt. % demonstrate extremely high wear resistance, with a friction coefficient of approximately 0.5 when paired with Al2O3.</div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"70 1","pages":"125 - 139"},"PeriodicalIF":0.9,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Optimization of the process of catalytic hydrogen reduction of sulfur dioxide from metallurgical exhaust gases on a nickel/zeolite catalyst 镍/沸石催化剂催化氢还原冶金废气中二氧化硫的工艺优化

IF 0.9 4区材料科学

Metallurgist Pub Date : 2026-10-06 DOI: 10.1007/s11015-026-02147-y

A. A. Ibrahimov, F. V. Yusubov

{"title":"Optimization of the process of catalytic hydrogen reduction of sulfur dioxide from metallurgical exhaust gases on a nickel/zeolite catalyst","authors":"A. A. Ibrahimov, F. V. Yusubov","doi":"10.1007/s11015-026-02147-y","DOIUrl":"10.1007/s11015-026-02147-y","url":null,"abstract":"<div>In metallurgical processes, especially in pyrometallurgy (production of copper, zinc, lead, and other metals from sulfide ores), large amounts of sulfur dioxide are released in the processes of roasting and smelting. The problem of neutralization of sulfur dioxide released in the course of processing of sulfide ores and in some other metallurgical processes is an important ecological and commercial task. As a result of efficient removal of SO2 from metallurgical exhaust gases not only decreases harmful emissions, but also allows one to obtain various valuable products, such as free sulfur and sulfur-containing compounds. For the implementation of processes of this kind, it is necessary to have new (more efficient) catalysts obtained on the basis of available local raw materials.In the present work, we synthesize various nickel-containing catalysts by the impregnation method based on local clinoptilolite samples and study their catalytic activity in the process of hydrogen reduction of sulfur dioxide to elemental sulfur. The experimental conditions were as follows: the rate of volume flow of the gas mixture W = 500–1500 h−1, the H2:SO2 ratio = 2.0–2.2, the catalyst particle size = 0.5–3 mm, and the volume fraction of SiO2 in the gas mixture = 10–30%.It is established that nickel-containing catalysts based on clinoptilolite exhibit high catalytic activity under the conditions typical of metallurgical exhaust gases. The optimal parameters of the process of hydrogen reduction of SO2 sulfur in the presence of catalysts with a nickel content of 10 wt.% are as follows: W = 1000 h−1, H2:SO2 = 2.1, and T = 773 °K. Based on the accumulated experimental data, we perform mathematical modeling, which makes it possible to predict the behavior of the system in various modes and under different conditions.</div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"70 1","pages":"149 - 158"},"PeriodicalIF":0.9,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Statistical and geometric assessment of the helical nature of metal flow in three-roll screw rolling processes 三辊螺杆轧制过程中金属流动的螺旋性质的统计和几何评定

IF 0.9 4区材料科学

Metallurgist Pub Date : 2026-10-06 DOI: 10.1007/s11015-026-02139-y

M. M. Skripalenko, T. V. Zavyalova, V. A. Vorotnikov, B. A. Romantsev, M. N. Skripalenko, V. A. Andreev, S. O. Rogachev, V. S. Yusupov, V. P. Kuznetsov

引用次数: 0

Characterization of heat-resistant nickel-based material VZhL718-PS synthesized from PREP-derived metal-powder compositions prep衍生金属粉末合成耐热镍基材料VZhL718-PS的表征

IF 0.9 4区材料科学

Metallurgist Pub Date : 2026-10-06 DOI: 10.1007/s11015-026-02143-2

P. G. Min, A. E. Knyazev, V. E. Vadeev

{"title":"Characterization of heat-resistant nickel-based material VZhL718-PS synthesized from PREP-derived metal-powder compositions","authors":"P. G. Min, A. E. Knyazev, V. E. Vadeev","doi":"10.1007/s11015-026-02143-2","DOIUrl":"10.1007/s11015-026-02143-2","url":null,"abstract":"<div>The paper presents the initial characteristics of the metal-powder compositions (MPC) of alloy VZhL718 (IN718) used in this study, obtained by the plasma rotating electrode process (PREP) and vacuum induction gas atomization (VIGA), including chemical composition, processing properties, MPC particle size distribution parameters, and morphology.The contents of gaseous impurities were determined for the MPCs in the initial state and after a single selective laser melting (SLM) cycle, as well as for the SLM-synthesized samples. Explanations of the resulting differences were provided.The porosity of the VZhL718-PS samples (PS = powder-based, synthesized) synthesized from PREP-derived powders was evaluated and compared with the existing porosity data for the VZhL718-PS material synthesized from VIGA-derived powders. Assumptions were made regarding the impact of the MPC production method on the observed differences.The surface roughness of the VZhL718-PS samples synthesized from PREP- and VIGA-derived MPCs was measured. Differences in roughness levels of the samples were determined, and roughness variation patterns were established for the upper and lower sides of the samples at different inclination angles. Explanations for the observed differences were provided.Mechanical properties were determined for the VZhL718-PS samples synthesized from PREP-derived MPC in the XY direction after complete heat treatment. The obtained results were compared with the available data for the VZhL718-PS material synthesized from VIGA-derived MPC.</div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"70 1","pages":"103 - 114"},"PeriodicalIF":0.9,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Profiling of round tubes to hexagonal form 圆管成六角形的轮廓

IF 0.9 4区材料科学

Metallurgist Pub Date : 2026-10-06 DOI: 10.1007/s11015-026-02137-0

M. V. Kadach, Y. V. Gamin, A. V. Goncharuk, A. S. Aleshchenko

引用次数: 0

Modeling combined casting and rolling-extrusion process for long-scale Al–Mg alloy semi-products doped with rare-earth metals 稀土掺杂铝镁合金长尺寸半成品的铸造与滚挤联合工艺建模

IF 0.9 4区材料科学

Metallurgist Pub Date : 2026-10-05 DOI: 10.1007/s11015-026-02141-4

S. B. Sidelnikov, A. I. Bezrukikh, E. S. Lopatina, I. L. Konstantinov, A. V. Durnopyanov

{"title":"Modeling combined casting and rolling-extrusion process for long-scale Al–Mg alloy semi-products doped with rare-earth metals","authors":"S. B. Sidelnikov, A. I. Bezrukikh, E. S. Lopatina, I. L. Konstantinov, A. V. Durnopyanov","doi":"10.1007/s11015-026-02141-4","DOIUrl":"10.1007/s11015-026-02141-4","url":null,"abstract":"<div>Using the QForm software package to model the combined casting, rolling, and extrusion (CCRE) process, the temperatures, strain rates, and energy-force parameters were determined for the specified deformation and geometric conditions of the existing SP-200 and SP-400 combined processing units. The forces acting on the rolls and the die, the torques on the rolls, and the power required from the drive motors for these units were calculated. A comparison of these values with the permissible limits of the existing equipment demonstrated that the CCRE process can be implemented without overloading the machinery. Furthermore, the modeling data obtained can be used to design and assemble the deformation units for the existing equipment. Using these units, experimental studies were conducted on the production of 9 mm diameter rods from 1580 and 01570 alloys, and pilot batches were produced. The structure and mechanical properties of the resulting rods were investigated. Subsequently, these rods were drawn into welding wire up to 3 mm in diameter, suitable for welding structures in the rocket and space technology industry.</div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"70 1","pages":"83 - 94"},"PeriodicalIF":0.9,"publicationDate":"2026-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Development and implementation of a spring-steel wire-rod process for rail fastenings and shock-absorber springs 钢轨紧固件和减震器弹簧的弹簧-钢丝-杆工艺的开发和实施

IF 0.9 4区材料科学

Metallurgist Pub Date : 2026-10-02 DOI: 10.1007/s11015-026-02132-5

Vasily V. Savinkov, Pavel V. Volodkin

引用次数: 0

Improving the surface quality of a prototype obtained from VT6 titanium alloy by electric arc surfacing 电弧堆焊提高VT6钛合金样品表面质量

IF 0.9 4区材料科学

Metallurgist Pub Date : 2026-10-02 DOI: 10.1007/s11015-026-02142-3

S. D. Neulybin, A. N. Yurchenko

引用次数: 0