共搜索到1623条信息,每页显示10条信息,共163页。用时:0小时0分0秒468毫秒
Decomposition process of zircon sand concentrate with CaO-NaOHZHANG Jiandong a,WANG Lijun a,and JIANG Dongmin b a Division of Mineral Resources,Metallurgy & Materials,General Research Institute... sand concentrate using mixed base of sodium hydroxide partly replaced by calcium oxide was inrestigated.It is found that the decomposition rate of zircon gradually increased with the increase......
Trans. Nonferrous Met. Soc. China 29(2019) 1948-1955 Decomposition kinetics of zircon sand in NaOH sub-molten salt solution Hong-qian SUN1,2, Jing SONG2, Shuai SUN2, Jing-kui QU2, Wei Lü1, Tao QI2 1... Engineering, Chinese Academy of Sciences, Beijing 100190, China Received 19 December 2018; accepted 28 May 2019 Abstract: Sub-molten salt was applied to the decomposition of zircon sand (ZrSiO4......
at the second step(0.7+0.6),fusion temperature of 700℃and fusion time of 0.5 h at the first step and 0.5 h at the second step(0.5+0.5 h).Under these conditions,the decomposition alloy of zircon sand can reach 97.25%.In the fusion process of zircon sand,the products of first step are mainly Na2ZrO3 and ZrSiO4,the products of second step are Na2ZrO3 and Na2SiO3,and the diffraction peaks of Na2ZrSiO5......
J. Cent. South Univ. (2017) 24: 442-447 DOI: 10.1007/s11171-017-3446-z Numerical simulation of sand load applied on high-speed train in sand environment WANG Tian-tian(王田天), JIANG Chong-wen(蒋崇文... University Press and Springer-Verlag Berlin Heidelberg 2017 Abstract: High-speed train running in the sand environment is different from the general environment. In the former situation, there will be sand......
Trans. Nonferrous Met. Soc. China 20(2010) s981-s987 Semi-solid gravity sand casting using gas induced semi-solid process T. CHUCHEEP1, R. BURAPA3, S. JANUDOM1, S. WISUTMETHANGOON2, J..., such as gravity sand casting, has not been widely studied even though it may help reduce porosity defects and offer a better casting yield. A semi-solid gravity sand casting process using the Gas......
; major and minor components; zircon sand; sample prepa-ration by fusion; [全文内容正在添加中] ......
Preparation and sintering properties of zirconia-mullite-corundum composites using fly ash and zircon MA Bei-yue(马北越), LI Ying(厉 英), CUI Shao-gang(崔绍刚), ZHAI Yu-chun(翟玉春) School of Materials..., zircon and alumina powder by a reaction sintering process. The phase and microstructure evolutions of the composite synthesized at desired temperatures of 1 400, 1 500 and 1 600 °C for 4 h were......
, zircon U-Pb geochronology, and Sr-Nd isotopes OUYANG Yuan(欧阳渊)1, 2, LIU Hong(刘洪)2, NIE Fei(聂飞)2, CONG Feng(丛峰)2,ZHANG Jian-long(张建农)2, ZHANG Jing-hua(张景华)2, HUANG Han-xiao(黄瀚霄)2,LIU Shu-sheng(刘书生)2... isotopic, and source rock characteristics, as well as the genesis and tectonic setting of the andesite in this region. In the Sayaburi Province, the andesite zircon U-Pb age is (241.2±1.2) Ma......
Stabilization of sand dunes with oil residue: Application to civil engineering construction and environmental implicationsEsmail Aflaki, Alborz Hajiannia(Civil and Environmental Engineering Department, Amirkabir University of Technology, Hafez Ave, Tehran, Iran)Abstract:The present work ascertains the feasibility of oil residue treatment for stabilizing wind-blown sand dunes. Various combinations......
Zircon SHRIMP U-Pb dating for island arc volcanic rock of Fangniugou area in Yitong region of Jilin ProvinceJIANG Zheng-long(姜正龙)1, QIU Hai-jun(邱海峻)2, PENG Yu-jing(彭玉鲸)3, ZHANG Wei-min(张为民)4, LIANG... elucidated and there is disagreement about the division. The sampling and SHRIMP U-Pb zircon dating of volcanic rock for Daheishan in the Fangniugou area and the northeast slope of the Duanjiadian were......