Resources Processing最新文献_第9页

Evaluation of Lattice Defect Density in Deformed Ti by Precise Measurement of Electrical Resistivity 用电阻率精确测量评价变形钛晶格缺陷密度

Resources Processing Pub Date : 2013-01-01 DOI: 10.4144/RPSJ.60.18

M. Ueda, Keiichi Ota, M. Ikeda

引用次数: 1

Determination of Carbonates in Converter Slag by Using Carbon Dioxide Detector Tube 二氧化碳检测管法测定转炉炉渣中的碳酸盐

Resources Processing Pub Date : 2013-01-01 DOI: 10.4144/RPSJ.60.167

Tomotaka Morishita, T. Kaneko, Tsukasa Kashiwabara, R. Hara, S. Wada

引用次数: 1

Aluminum Metallic Foams Made by Carbonate Foaming Agents 碳酸盐发泡剂制备的金属铝泡沫

Resources Processing Pub Date : 2013-01-01 DOI: 10.4144/RPSJ.60.5

Vitalievich Gnyloskurenko Svyatoslav, T. Koizumi, K. Kita, Takashi Nakamura

{"title":"Aluminum Metallic Foams Made by Carbonate Foaming Agents","authors":"Vitalievich Gnyloskurenko Svyatoslav, T. Koizumi, K. Kita, Takashi Nakamura","doi":"10.4144/RPSJ.60.5","DOIUrl":"https://doi.org/10.4144/RPSJ.60.5","url":null,"abstract":"Recent developments in metal foams, especially aluminum, have produced a new class of lightweight materials at the side of the traditional ones such as polymers, ceramics or glass. The combination of a metallic character together with a cellular structure gives an interesting potential for a wide application of this material, particularly for high volume markets such as the automotive industry. Increased demands concerning cost economy, passenger safety in automobiles and materials recycling all bring constructors now to use metal foams. Hereby it provides the additional environmental benefits from a potentially improved fuel economy and lower CO2 emissions. Then, short review of metallic foam was done in the present paper. The possibility of carbonate and hydroxide as foaming agent for Al-Si-Cu alloy by powder metallurgy route is studied, after preparation processes of metallic foams were briefly reviewed in the present paper. It was done by measuring thermal decomposition behavior of foaming agents and evaluating cell structure of those aluminum foams. To obtain fine and homogenous cell structure in powder metallurgy route by using safer carbonate as foaming agent, it has made clear that importance of selecting foaming agent starting decomposition after melting of matrix. It is clearly different from TiH2-foam to grow coarse-rounded cell structure. From this point of view, MgCO3 and CaMg(CO3)2 is suitable for matrix of Al-Si-Cu alloy. CaMg(CO3)2-foam could expand to 1.19 in specific gravity, and keep homogeneous, fine and spherical cell structure.","PeriodicalId":20971,"journal":{"name":"Resources Processing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88594616","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: 9

A Novel Separation Method for Plastic of Discarded Appliance Including Black Plastic by Using Raman Spectroscopy 一种利用拉曼光谱分离废弃电器中包括黑色塑料的新方法

Resources Processing Pub Date : 2013-01-01 DOI: 10.4144/RPSJ.60.65

Yuta Yamaji, K. Okaya, Gjergj Dodbiba, Li Pang Wang, T. Fujita

{"title":"A Novel Separation Method for Plastic of Discarded Appliance Including Black Plastic by Using Raman Spectroscopy","authors":"Yuta Yamaji, K. Okaya, Gjergj Dodbiba, Li Pang Wang, T. Fujita","doi":"10.4144/RPSJ.60.65","DOIUrl":"https://doi.org/10.4144/RPSJ.60.65","url":null,"abstract":"Plastics have been used in various applications. The amount of domestic production in 2009 was 1.1 Mt. These days, mechanical recycling for the plastic is required, but one of the biggest problems of this method is how to separate black plastics. Black plastics contain carbon black as a colorant, which make them difficult to be identified by infrared adsorption (IR) spectroscopy. Thus, in this study, we are putting forward Raman spectroscopy for separating plastics (including black plastics) from the discarded appliances. There are reports which indicate that PP, PS, and ABS represent 70–80% of the discarded plastics. Each of them has its own characteristic peaks in Raman spectrum. In case of PP black plastics, nearly 100% of the feed can be identified, however, PS is difficult to be identified when carbon black content is about 3%. ABS of the discarded appliances was not identified. Finally, other fillers such as bromine flame retardants and calcium volume expander did not have any effect on Raman spectrum. In addition, we run some experiments for separating the discarded plastics by means of combining Raman identification with triboelectric separation. In Raman identification, the longer we exposure, the more amount of recovery we got, but grade was the highest in 1.0 s exposure, and it was over 95%. In triboelectric separation, however, the grade of ABS and PS were about 70%.","PeriodicalId":20971,"journal":{"name":"Resources Processing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87081401","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: 3

Separation of PGMs Bearing Alumina Phase from Cordierite in Spent Automobile Catalyst by Thermal Shock 用热冲击法从废汽车催化剂中分离含pgm的氧化铝相和堇青石

Resources Processing Pub Date : 2013-01-01 DOI: 10.4144/RPSJ.60.28

Gangfeng Liu, Ayumu Tokumaru, S. Owada

引用次数: 12

Effective Utilization of Grinding and Mechanochemistry to Recycling and Separation 研磨和机械化学在回收和分选中的有效应用

Resources Processing Pub Date : 2013-01-01 DOI: 10.4144/RPSJ.60.36

Qiwu Zhang, J. Kano, F. Saito

{"title":"Effective Utilization of Grinding and Mechanochemistry to Recycling and Separation","authors":"Qiwu Zhang, J. Kano, F. Saito","doi":"10.4144/RPSJ.60.36","DOIUrl":"https://doi.org/10.4144/RPSJ.60.36","url":null,"abstract":"The authors introduce novel research results on material synthesis and recycling by grinding. The research is focused at first mechanical activation of fine particles of solid material caused by grinding, and this leads to synthesize functional material from two starting materials without heating. One of the examples is to show the formation of complex oxides such as CaTiO 3 from CaO and TiO 2 . Another one is dechlorination of PVC by its grinding with CaO to form CaOHCl and hydrocarbon. This means that it is possible to separate chlorine from PVC by its washing with water. Grinding operation enables us to reduce indium (In) by from indium oxide (In 2 O 3 ) and ITO in the presence of Li 3 N under NH 3 /N 2 gaseous environment. The reaction can be given by: In 2 O 3 + Li 3 N + NH 3 → 2In + 3LiOH + N 2 . The purity of In and its recover are quite high over 90%. Further example of the mechanical activation followed by heating up to about 400 ° C is to generate hydrogen (H 2 ) from biomass such as wood and straw. The biomass is milled with inorganic substance such as CaO, followed by heating at non-oxidative environment. The generation of H 2 in high concentration can be attained during heating, due to adsorption of CO 2 and CO by CaO to form CaCO 3 . This implies that the grinding plays a big role to bring out many possible applications for material synthesis, material and waste processing.","PeriodicalId":20971,"journal":{"name":"Resources Processing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79096762","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

Removal of Paint Impurities from Magnesium Alloy Scraps by Super-heated Steam Treatment 高温蒸汽处理去除镁合金废料中油漆杂质的研究

Resources Processing Pub Date : 2013-01-01 DOI: 10.4144/rpsj.60.41

S. Koyanaka, Takeyoshi Yamamoto, M. Kimura, Kazumasa Yoshida, A. Saitoh

引用次数: 1

Evaluation of the Degradation of Fuel Cell Heat Engine Hybrids for Renewable Fuels 可再生燃料燃料电池热机混合动力系统的退化评价

Resources Processing Pub Date : 2012-01-01 DOI: 10.4144/RPSJ.59.155

M. Williams, W. Winkler, A. Suzuki, A. Miyamoto

{"title":"Evaluation of the Degradation of Fuel Cell Heat Engine Hybrids for Renewable Fuels","authors":"M. Williams, W. Winkler, A. Suzuki, A. Miyamoto","doi":"10.4144/RPSJ.59.155","DOIUrl":"https://doi.org/10.4144/RPSJ.59.155","url":null,"abstract":"Fuel cell hybrids are combination of energy conversion sub-systems—fuel cells and heat engines. Fuel cell hybrids are important for the future as they are currently the most efficient devices when converting chemical energy of methane from renewable fuels to electricity. While the perfect fuel cell would undergo no degradation, practical fuel cells, like batteries, will degrade. This paper is a study of fuel cell hybrids electrochemical performance when the fuel cell sub-system is under- going degradation. In all cases, one can utilize the waste heat to improve overall efficiency through hybridization. Even degradation rates of 0.25 percent per 1000 hours, corresponding to 40,000 hour life, produce significant amounts of waste heat. Power loss is especially high at the cycle end-of- life. Hybridization utilizes waste heat and can be used if degradation occurs and long fuel cell life is expected. The common practice is to linearize degradation. Giving a linear representation to DR, however, gives a linear structure to the area specific resistance, ASR(t). Experimental evidence shows that ASR(t) is commonly an ohmic parabolic function. Degradation rate, DR avg (t), %/1000 hours varies throughout the life of the fuel cell for ohmic parabolic degradation behavior.","PeriodicalId":20971,"journal":{"name":"Resources Processing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74900303","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

Removal of Fluoride Ions from Aqueous Solution Using Ferric Hydroxide 用氢氧化铁去除水溶液中的氟离子

Resources Processing Pub Date : 2012-01-01 DOI: 10.4144/RPSJ.59.67

H. Nakazawa, Kazuhito Nishikawa, Wataru Hareyama

引用次数: 2

Hydrothermal Synthesis of Bioactive Titanium Oxide-CaCO3 Films with Aqueous Ca(OH)2/KHCO3 on Pure Ti 纯钛上Ca(OH)2/KHCO3水热合成生物活性氧化钛- caco3膜

Resources Processing Pub Date : 2012-01-01 DOI: 10.4144/RPSJ.59.22

Yuka Suzaki, M. Ueda, M. Ikeda, K. Doi, Terauchi Shuntaro

{"title":"Hydrothermal Synthesis of Bioactive Titanium Oxide-CaCO3 Films with Aqueous Ca(OH)2/KHCO3 on Pure Ti","authors":"Yuka Suzaki, M. Ueda, M. Ikeda, K. Doi, Terauchi Shuntaro","doi":"10.4144/RPSJ.59.22","DOIUrl":"https://doi.org/10.4144/RPSJ.59.22","url":null,"abstract":"Porous titanium is an excellent biomaterial candidate because of its ability to maintain appropriate strength once it is implanted. The osteointegration of titanium and its alloys is less than that of bioactive ceramics. Therefore, various surface modification techniques have been developed to improve the osteointegration. We successfully prepared titanium dioxide (TiO2) and calcium titanate (CaTiO3) films on the surfaces of pure Ti by combined chemical-hydrothermal treatment. Especially in CaTiO3, the formation of apatite was promoted due to the release of Ca 2+ from the surface of CaTiO3 in Hanks’ solution. Calcite (CaCO3) is a biodegradable material that must enhance hydroxyapatite (HAp) formation in simulated body fluid as well as in CaTiO3. The purpose of the present study was to synthesize bioactive films including CaCO3 on pure Ti substrates and porous titanium by chemical-hydrothermal treatment using Ca(OH)2 and KHCO3. The modified porous materials were tested mechanically in a compression test. CaTiO3-CaCO3 and TiO2-CaCO3 films were synthesized by choosing an ion concentration ratio of CO3 /Ca in the aqueous solution for hydrothermal treatment. CaTiO3-CaCO3 films were also synthesized on porous titanium by hydrothermal treatment. Compressive properties of porous titanium after the treatment were similar to those prior to the treatment. The films produced by the present surface modification showed no significant changes compared to the original properties.","PeriodicalId":20971,"journal":{"name":"Resources Processing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89305241","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: 3