Metalurgija最新文献_第5页

PENGENDAPAN TEMBAGA DARI LARUTAN TEMBAGA SULFAT DENGAN CARA SEMENTASI MENGGUNAKAN BESI 硫酸盐收入

IF 0.6

Metalurgija Pub Date : 2018-01-23 DOI: 10.14203/METALURGI.V29I2.288

Rudi Subagja

引用次数: 1

STUDI KINETIKA PELINDIAN BIJIH MANGAN KADAR RENDAH DAERAH WAY KANAN LAMPUNG DENGAN MENGGUNAKAN MOLASES DALAM SUASANA ASAM 研究CLINDIAN网络以确定灯在某些条件下如何产生Molase

IF 0.6

Metalurgija Pub Date : 2018-01-23 DOI: 10.14203/METALURGI.V29I2.282

S. Sumardi, F. R. Mufakhir, A. Prasetyo

{"title":"STUDI KINETIKA PELINDIAN BIJIH MANGAN KADAR RENDAH DAERAH WAY KANAN LAMPUNG DENGAN MENGGUNAKAN MOLASES DALAM SUASANA ASAM","authors":"S. Sumardi, F. R. Mufakhir, A. Prasetyo","doi":"10.14203/METALURGI.V29I2.282","DOIUrl":"https://doi.org/10.14203/METALURGI.V29I2.282","url":null,"abstract":"KINETICS STUDY OF MANGANESE LEACHING OF LOW GRADE MANGANESE ORE FROM WAY KANAN REGENCY LAMPUNG PROVINCE USING MOLASSES IN SULFURIC ACID. The experiments of manganese leaching of low grade manganese ore from Way Kanan regency Lampung province using sugarcane molasses as reductan agent in sulfuric acid were investigated. This experiment was conducted to study the processes controlling the leaching rate of manganese ore and the values of the reaction rate constants and / or the diffusion constant and activation energy . Leaching is done with the experimental conditions remain Percent solids 10 % , stirring speed 300 rpm , temperature and concentration are varied , molasses doses as much as 80 g / L. Kinetics behaviour of mangan leaching was predicted by using Shrinking Core model ( SCM) . The results of leaching of low grade manganese ore from Way Kanan regency Lampung province can be done by using molasses as a reducing agent in sulfuric acid medium. Kinetics study of manganese leaching using molasses as reducing agent shows that the rate of manganese leaching is controlled by the diffusion of reaction product through unreacted core with activation energy of 3.73 kcal/mole.","PeriodicalId":18462,"journal":{"name":"Metalurgija","volume":"29 1","pages":"111-118"},"PeriodicalIF":0.6,"publicationDate":"2018-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47481763","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

OPTIMASI PROSES REDUKSI BIJIH NIKEL LATERIT JENIS LIMONIT SEBAGAI BAHAN BAKU NPI (NICKEL PIG IRON) 还原过程的优化以不迟于褐铁矿基因作为NPI（镍生铁）的平衡

IF 0.6

Metalurgija Pub Date : 2018-01-23 DOI: 10.14203/METALURGI.V29I1.266

A. Prasetyo, F. Firdiyono, Eni Febriana

引用次数: 3

ULTRASONIC TREATMENT EFFECT ON THE CONSOLIDATION OF Fe-Cr PARTICLE MIXTURES AFTER COMPACTION AND SINTERING PROCESS 超声处理对Fe-Cr颗粒混合物压实烧结后固结的影响

IF 0.6

Metalurgija Pub Date : 2018-01-23 DOI: 10.14203/METALURGI.V29I2.289

M. Silalahi, P. Untoro, B. Suharno, S. Harjanto

{"title":"ULTRASONIC TREATMENT EFFECT ON THE CONSOLIDATION OF Fe-Cr PARTICLE MIXTURES AFTER COMPACTION AND SINTERING PROCESS","authors":"M. Silalahi, P. Untoro, B. Suharno, S. Harjanto","doi":"10.14203/METALURGI.V29I2.289","DOIUrl":"https://doi.org/10.14203/METALURGI.V29I2.289","url":null,"abstract":"Fe-Cr microalloys which obtained by ultrasonic method are the initial cores for the consolidation process. Therefore its facilitate the formation of the homogeneous bulk of Fe-Cr alloy with a stable phase. In this research, the synthesis of bulk of Fe-Cr alloy from the particles mixture of (Fe+Cr) as the ultrasonic treatment results has been carried out. The particles consolidation has been carried out through a process of compaction without adding any lubricants and followed by sintering process in the quartz glass capsules by using induction furnace at 1300 °C. Consolidation of mixture of Fe-Cr particles that have not undergone previous ultrasonic treatment is also made for a comparison. The investigation by using the SEM (scanning electron microscope)- and density measurements method were preformed on the Fe-Cr green powders compaction. The bulk of Fe-Cr alloys that are produced trough sintering process was observed using SEM-EDS (energy dispersive spectroscopy), XRD (x-ray diffraction), and density measurements method. The bulk of Fe-Cr alloy prepared with ultrasonically treated Fe-Cr microalloy powders, is more homogeneous in composition and has a better phase stability in comparison to Fe-Cr powders prepared without the ultrasonic treatment. Production of bulk Fe-Cr alloy in quartz glass capsule during the sintering process has produced Fe-Cr alloy without oxides.","PeriodicalId":18462,"journal":{"name":"Metalurgija","volume":"29 1","pages":"171-178"},"PeriodicalIF":0.6,"publicationDate":"2018-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42344794","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

PROSES DEKARBURISASI NICKEL PIG IRON 镍生铁申报流程

IF 0.6

Metalurgija Pub Date : 2018-01-23 DOI: 10.14203/METALURGI.V29I2.287

Adil Jamali, Ra Binudi, B. Adjiantoro

引用次数: 2

PERILAKU PELARUTAN LOGAM NIKEL DAN BESI DARI BIJIH NIKEL KADAR RENDAH SULAWESI TENGGARA

IF 0.6

Metalurgija Pub Date : 2018-01-23 DOI: 10.14203/metalurgi.v29i2.285

Solihin Solihin, F. Firdiyono

引用次数: 4

TINJAUAN PEMBUATAN NIOBIUM KARBIDA [参考]NIOBIUM KARBIDA制作