Thermal decomposition characteristics of low-grade rhodochrosite ore in N2, CO2 and air atmosphere

被引：4
|
作者：
Tu, Zhongbing [1 ]
Liang, Xiaoping [1 ]
Wu, Chengbo [1 ]
Wang, Yu [1 ]
机构：
[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400030, Peoples R China
来源：
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2022年 / 147卷 / 11期
关键词：
Low grade; Atmosphere; Roasting; Phase transformation; Ammonia leaching; PHOSPHORUS MANGANESE ORES; REDUCTION; DIOXIDE; OXIDE; BIODIESEL; INDIA;
D O I：
10.1007/s10973-021-10974-1
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Roasting is an essential process before ammonia leaching of low-grade rhodochrosite ore. Thermal decomposition characteristics and phase transformation rules of low-grade rhodochrosite ore with a particle size of less than 74 mu m in N-2, CO2 and air were studied. MnCO3, MgCO3 and CaCO3 in rhodochrosite are decomposed into MnO, MgO and CaO at 339 celcius, 306 celcius and 842 celcius, respectively. MnO is oxidized to MnO2, Mn2O3 and Mn3O4 at 339 celcius, 533 celcius and 1005 celcius, respectively. The TG/DTA and phase transformation results indicated that by thermal decomposition of rhodochrosite ore in air, N-2 and CO2, MnCO3 is converted into Mn2O3, MnO and MnO, respectively. MnCO3 is converted to MnO at a higher temperature in a carbon dioxide atmosphere (512 celcius) than in a nitrogen atmosphere (400 celcius).
引用
收藏
页码：6481 / 6488
页数：8
相关论文
共 50 条
  • [41] Enhanced Shale Gas Recovery by the Injections of CO2, N2, and CO2/N2 Mixture Gases
    Du, Xidong
    Gu, Min
    Liu, Zhenjian
    Zhao, Yuan
    Sun, Fulong
    Wu, Tengfei
    [J]. ENERGY & FUELS, 2019, 33 (06) : 5091 - 5101
  • [42] CO2, N2, and CO2/N2 mixed gas injection for enhanced shale gas recovery and CO2 geological storage
    Jianfa Wu
    Haoran Hu
    Cheng Chang
    Deliang Zhang
    Jian Zhang
    Shengxian Zhao
    Bo Wang
    Qiushi Zhang
    Yiming Chen
    Fanhua Zeng
    [J]. Frontiers in Energy, 2023, 17 : 428 - 445
  • [43] CO2, N2, and CO2/N2 mixed gas injection for enhanced shale gas recovery and CO2 geological storage
    Wu, Jianfa
    Hu, Haoran
    Chang, Cheng
    Zhang, Deliang
    Zhang, Jian
    Zhao, Shengxian
    Wang, Bo
    Zhang, Qiushi
    Chen, Yiming
    Zeng, Fanhua
    [J]. FRONTIERS IN ENERGY, 2023, 17 (03) : 428 - 445
  • [44] DETERMINATION OF ECS SCALING PARAMETERS FOR CO2 CO2 AND CO2 N2
    BONAMY, L
    ROBERT, D
    BOISSOLES, J
    BOULET, C
    [J]. JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER, 1991, 45 (05): : 305 - 308
  • [45] N2/CO2 THERMAL MIXING LASER WITH CONTINUED AERODYNAMIC EXPANSION
    BOEDEKER, LR
    HALL, RJ
    BRONFIN, BR
    [J]. BULLETIN OF THE AMERICAN PHYSICAL SOCIETY, 1970, 15 (11): : 1557 - &
  • [46] Nitrogenase reduction of N2 and CO2
    Raugei, Simone
    Seefeldt, Lance
    Hoffman, Brian
    [J]. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2017, 253
  • [47] Nitrogenase reduction of N2 and CO2
    Raugei, Simone
    [J]. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2017, 254
  • [48] STREAMING BIREFRINGENCE IN CO2 AND N2
    BAAS, F
    [J]. PHYSICS LETTERS A, 1971, A 36 (02) : 107 - &
  • [49] Combustion characteristics and kinetics of DPR Korea's anthracite in O2/N2 and O2/CO2 atmosphere
    Yongju, O.
    Zhang, Yongsheng
    [J]. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2022, 147 (22) : 12897 - 12905
  • [50] Combustion characteristics and kinetics of DPR Korea’s anthracite in O2/N2 and O2/CO2 atmosphere
    O. Yongju
    Yongsheng Zhang
    [J]. Journal of Thermal Analysis and Calorimetry, 2022, 147 : 12897 - 12905
12345