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Topography,structure,and formation kinetic mechanism of carbon deposited onto nickel in the temperature range from 400 to 850°C
  • ISSN号：2095-9389
  • 期刊名称：《工程科学学报》
  • 时间：0
  • 分类：TG146[金属学及工艺—金属材料;一般工业技术—材料科学与工程;金属学及工艺—金属学]
  • 作者机构：北京科技大学钢铁冶金新技术国家重点实验室,北京100083
  • 相关基金：Projects（51474141;51174022）supported by the National Natural Science Foundation of China
作者： Zhi-yuan Chen, Liu-zhen Bian, Li-jun Wang, Zi-you Yu, Hai-lei Zhao, Fu-shen Li, Kuo-chih Chou
关键词： 氧化焙烧, 辉钼精矿, 形貌, 烧结, oxidation roasting, molybdenite concentrate, morphology, sintering
中文摘要：

为研究辉钼精矿的氧化焙烧机理分别在673、723、773、873、973 K下进行氧化焙烧实验。分别采用X射线衍射（XRD）和扫描电子显微镜（SEM）对氧化过程中产物的物相和形貌进行分析。结果表明,在纯氧条件下,Mo S2直接氧化成Mo O3,并且随着焙烧温度的升高,产物的形貌发生了明显变化。在纯氧气氛下,当温度高于873 K时有烧结现象发生,烧结物大部分是由氧化产物Mo O3组成,同时含有少量未氧化完全的Mo S2。

英文摘要：

In order to investigate the oxidation roasting of molybdenite concentrate in pure oxygen atmosphere, experiments at 673, 723, 773, 873 and 973 K were carried out. The phase transitions and morphology evolutions of the samples obtained at different temperatures after reacting for different time were analyzed by X-ray diffraction（XRD） and scanning electron microscopy（SEM）. The results showed that molybdenite concentrate was oxidized directly to Mo O3 in pure oxygen atmosphere. There were remarkable changes of the morphologies of products with the increase of the roasting temperature. It was also found that sintering phenomenon occurred during the roasting process in pure oxygen when the temperature was above 873 K. The composition of sintered sample was mainly comprised of Mo O3 and some unreacted Mo S2.

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期刊信息
  • 《工程科学学报》
  • 北大核心期刊（2011版）
  • 主管单位:中华人民共和国教育部
  • 主办单位:北京科技大学
  • 主编：张欣欣
  • 地址：北京市海淀区学院路30号
  • 邮编：100083
  • 邮箱：xuebaozr@ustb.edu.cn
  • 电话：010-62332875
  • 国际标准刊号：ISSN：2095-9389
  • 国内统一刊号：ISSN：10-1297/TF
  • 邮发代号:82-303
  • 获奖情况:
  • 首届国家期刊奖,第二届全国优秀科技期刊评比一等奖,全国高等学校自然科学学报系统优秀学报评比一等奖,中国期刊方阵“双高”期刊
  • 国内外数据库收录:
  • 日本日本科学技术振兴机构数据库,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）
  • 被引量:392