The Bulletin Tabbin Institute for Metallurgical Studies (TIMS)最新文献_第3页

Graphene Reinforced Copper Matrix Nano-Composite for Resistance Seam Welding Electrode 石墨烯增强铜基纳米复合材料用于电阻缝焊条

The Bulletin Tabbin Institute for Metallurgical Studies (TIMS) Pub Date : 2021-08-01 DOI: 10.21608/TIMS.2021.191623

N. S. Mansour, H. M. Yehia, A. Ali

引用次数: 2

A Comparative Study between Rhadophyta And Phyophta on Biosorption of U and Th. 横纹草和植藻对U和Th的生物吸收比较研究。

The Bulletin Tabbin Institute for Metallurgical Studies (TIMS) Pub Date : 2021-08-01 DOI: 10.21608/tims.2021.191717

N. Gad, J. Samaan

引用次数: 0

Reoxidation of Direct Reduced Iron in Stagnant Air in The Temperature Range between 150 and 450°C. 直接还原铁在静止空气中150 ~ 450℃范围内的再氧化。

The Bulletin Tabbin Institute for Metallurgical Studies (TIMS) Pub Date : 2021-08-01 DOI: 10.21608/tims.2021.191719

S. S. Abd Elmomen

引用次数: 2

Effect of the Pouring Temperature on Microstructure and Tensile Properties of A356 Aluminum Alloy via Semisolid Casting using Slope Cooling Plate. 浇注温度对倾斜冷却板半固态铸造A356铝合金组织和拉伸性能的影响

The Bulletin Tabbin Institute for Metallurgical Studies (TIMS) Pub Date : 2021-08-01 DOI: 10.21608/tims.2021.191363

W. Mabrouk, M. Moussa, S. Abdelwahab, A. Ali

{"title":"Effect of the Pouring Temperature on Microstructure and Tensile Properties of A356 Aluminum Alloy via Semisolid Casting using Slope Cooling Plate.","authors":"W. Mabrouk, M. Moussa, S. Abdelwahab, A. Ali","doi":"10.21608/tims.2021.191363","DOIUrl":"https://doi.org/10.21608/tims.2021.191363","url":null,"abstract":"The cooling slope casting process has gained significant importance for the manufacturing of semisolid feedstock aluminum alloys, which find applications in the automotive and aerospace industries. The effect of the pouring temperatures on the microstructure of A356 aluminum alloy via semisolid casting using the slope cooling plate has been investigated. The prepared alloy that becomes semisolid at the end of the cooling slope plate is consequently poured into a sand mold. Without using the slope cooling plate, the α-Al phases became coarse dendritic structure with an average length of about 287.5 μm. In case of using the slope cooling plate at the optimum pouring temperature of 640°C, The α-Al phase developed a fine globular structure with the average grain size of about 72.6 μm. The tensile properties of the investigated A356 alloy were improved by the application of semisolid casting at the optimum pouring temperature of 640°C. The ultimate tensile strength and the elongation of the investigated alloy significantly increased from 102 MPa and 1.175% without semisolid casting to 113 MPa and 3.6 % with semisolid casting at the optimum pouring temperature of 640°C, respectively then gradually decreased with further increasing the pouring temperature. The fracture mechanism has been also investigated.","PeriodicalId":22390,"journal":{"name":"The Bulletin Tabbin Institute for Metallurgical Studies (TIMS)","volume":"71 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86092726","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

Recovery of Some Valuable Elements from Highly Ferruginous Shale, Um Bogma Formation, Wadi Um Hamed, South Western Sinai, Egypt. 埃及西奈半岛西南部Wadi Um Hamed Um Bogma组高铁页岩中一些有价元素的回收

The Bulletin Tabbin Institute for Metallurgical Studies (TIMS) Pub Date : 2021-08-01 DOI: 10.21608/tims.2021.191718

H. A. Radwan, A. Faheim, E. El-Sheikh, Z. A. Abd El‐Wahab, M. Gado

{"title":"Recovery of Some Valuable Elements from Highly Ferruginous Shale, Um Bogma Formation, Wadi Um Hamed, South Western Sinai, Egypt.","authors":"H. A. Radwan, A. Faheim, E. El-Sheikh, Z. A. Abd El‐Wahab, M. Gado","doi":"10.21608/tims.2021.191718","DOIUrl":"https://doi.org/10.21608/tims.2021.191718","url":null,"abstract":"The present work describes a study of the acidic pug leaching technique for Uextraction in addition to some associated valuable metals from a collected technological sample of ferruginous shale from Wadi Um Hamed of Um Bogma Formation at Abu Thor locality of southwestern Sinai, Egypt. A representative sample of the ore material was found to assay 900, 700 and 400 ppm of REEs, U and Cu, respectively in addition to some major and minor oxides. Numerous steps were perform upon the studied sample to process parametric studies like sulfuric acid concentration (50-150 kg/ton), curing time (0.5-5.0 h) and curing temperature (50150°C) in order to assess the best one giving the optimum conditions. Under the optimal conditions (150 kg/ton sulfuric acid for 4.0 h at 150°C), the first step involved Fe-removal as hydroxide from the pregnant leaching solution using pH adjustment method followed by Urecovery through sorption / desorption and precipitation steps with the help of Amberlite IRA400-Cl (strongly basic anion exchange resin) via column method. In the third step, REEsrecovery from Ufree effluent was investigated using oxalic acid precipitation process while Curecovery by precipitation as hydroxide with ammonia solution was tack place.","PeriodicalId":22390,"journal":{"name":"The Bulletin Tabbin Institute for Metallurgical Studies (TIMS)","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89912386","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

Preparation of Highly Pure Y2O3 from Rees Concentrate of Gabal El-Faliq Granitoid Rocks, South Eastern Desert, Egypt. 从埃及东南部沙漠Gabal El-Faliq花岗岩中提取稀土精矿制备高纯Y2O3

The Bulletin Tabbin Institute for Metallurgical Studies (TIMS) Pub Date : 2019-01-01 DOI: 10.21608/tims.2019.189874

D. Zaki

引用次数: 0

Relationship between the Uranium Concentration and the Upgrading of El-Sibaeya Phosphate Ore by New Physical Processes. 铀浓度与El-Sibaeya磷矿新物理工艺提质的关系

The Bulletin Tabbin Institute for Metallurgical Studies (TIMS) Pub Date : 2019-01-01 DOI: 10.21608/tims.2019.191204

A. A. El-Shennawy

{"title":"Relationship between the Uranium Concentration and the Upgrading of El-Sibaeya Phosphate Ore by New Physical Processes.","authors":"A. A. El-Shennawy","doi":"10.21608/tims.2019.191204","DOIUrl":"https://doi.org/10.21608/tims.2019.191204","url":null,"abstract":"Phosphate plays a significant economic role in developing countries because the phosphate rock is consumed in the agricultural sector as fertilizers and animal feedstocks as well as used in the manufacture of high-grade phosphoric acid used in the manufacture used in pharmaceuticals, detergents, food products and other industrial uses. So, this research focus is represented in how to apply some new physical concentration processes derived from ore dressing to arise the concentration of P2O5 (21.14%) in sample of 10 Kg of low grade Egyptian phosphate ore was collected from East El-Sibaeya region as an alternative method to the existing calcination method, which is not friendly environment and has several disadvantages and accordingly the find relationship between the uranium concentration and the upgrading of El-Sibaeya phosphate ore. Upgrading the phosphate ore is done through crushing, screening, up current Classifiers, gravimetric separation and hydraulic separation. The results of this study led to achieve the desired product (high grade of phosphate) which is imperative to meeting market requirements, and at optimum conditions gave a product which analyzed P2O5 (33.63%), CaO (47.66%), MgO (0.57%), SiO2 (4.91%), NaO2 (0.49%), K2O (0.89%), Al2O3 (0.64%), Fe2O3 (1.25%) and U (172.12 ppm).","PeriodicalId":22390,"journal":{"name":"The Bulletin Tabbin Institute for Metallurgical Studies (TIMS)","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90191364","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

Purification of Lanthanum Oxide by Magnetic Nano-Composite Alginate Beads after Its Concentration from Acidic Monazite Leach Liquor. 磁性纳米复合海藻酸微球富集氧化镧对酸性独居石浸出液的净化作用。

The Bulletin Tabbin Institute for Metallurgical Studies (TIMS) Pub Date : 2019-01-01 DOI: 10.21608/tims.2019.189866

A. A. Abd El-Fatah

引用次数: 1

Selective Precipitation of Yttrium From Monazite Acid Leach Liquor by Using Carbonates Precipitation Method. 碳酸盐沉淀法选择性沉淀独居石酸浸液中的钇。

The Bulletin Tabbin Institute for Metallurgical Studies (TIMS) Pub Date : 2019-01-01 DOI: 10.21608/tims.2019.190142

M. El-awady, A. Abd-elfatah, S. M. Abd-Elwahab, A. H. Mahmoud, O. Helaly

{"title":"Selective Precipitation of Yttrium From Monazite Acid Leach Liquor by Using Carbonates Precipitation Method.","authors":"M. El-awady, A. Abd-elfatah, S. M. Abd-Elwahab, A. H. Mahmoud, O. Helaly","doi":"10.21608/tims.2019.190142","DOIUrl":"https://doi.org/10.21608/tims.2019.190142","url":null,"abstract":"Rare earth elements (REE) solubility with carbonate salts vary greatly from element to element. The heavy rare earth elements (HRE) being more soluble than the light rare earth elements. Their solubility is a function of the carbonate concentration and the kind of carbonate as sodium, potassium and ammonium. In this work, it is explored the ability of the carbonate for the precipitation of the REE and an easy separation of yttrium was achieved using sodium carbonate to form complex yttrium carbonate followed by oxalic acid precipitation. Form this work REEs concentrate containing (%) 1.8 YR2ROR3R, 1.6 GdR2ROR3R, 23.4 CeOR2R, 7.6 NdR2ROR3R, 11.4 LaR2ROR3R, 2.3 SmR2ROR3R, 0.8 EuR2ROR3R and 3.1 PrR6ROR11R, where the mentioned concentrate was produced after the acid treatment of monazite mineral followed by dissolution with ice water. The produced solution was precipitated with sodium carbonate followed by dissolution in hydrochloric acid and precipitation using oxalic acid to produce yttrium concentrate containing 54.86% YR2ROR3,R 15.53% CeOR2,R 15.29% LaR2ROR3R and 6.90% NdR2ROR3R.","PeriodicalId":22390,"journal":{"name":"The Bulletin Tabbin Institute for Metallurgical Studies (TIMS)","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73078936","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

Effect of Direct Reduced Iron on Ferrous Oxide Capacity of Slag in Electric Arc Furnace. 直接还原铁对电弧炉炉渣氧化亚铁容量的影响。

The Bulletin Tabbin Institute for Metallurgical Studies (TIMS) Pub Date : 2019-01-01 DOI: 10.21608/tims.2019.191206

H. Abdelwahed, M. Shaheen, G. Megahed, E. Ahmed, M. Meraikib

引用次数: 0