Controllable Synthesis of Battery-Grade Iron Oxalate with Waste Ferrous Sulfate from Titanium Dioxide Production

  • Keyu Zhang
  • Yin Li
  • Runhong Wei
  • Yunke Wang
  • Yongnian Dai
  • Yaochun YaoEmail author
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)


In order to utilize the waste ferrous sulfate from titanium dioxide production effectively, a statistical experimental design was used to optimize the preparation process parameters for synthesis of battery-grade iron oxalate. The controllable synthesis of iron oxalate with different particle size and purity was investigated to further illustrate the effects of various factors on iron oxalate growth. Results show that the reaction temperature plays a key role on both material’s purity and size. The influence of reaction factors can be attributed to the change of thermodynamics and kinetics which leads to the different crystal nucleation and growth process. The model has a well fitted response and a good liner correlation with the data of variance analysis. The analytical results in this paper demonstrate that the preparation of battery-grade iron oxalate is a new way to utilize waste ferrous sulfate, which offers an opportunity for green and safe industrial production.


Iron oxalate Waste ferrous sulfate Titanium dioxide production Lithium ion batteries 



This work was financially supported by the National Natural Science Foundation of China (Grant No. 51364021) and the Program for Innovative Research Team at the University of Ministry of Education of China (No. IRT_17R48).


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© The Minerals, Metals & Materials Society 2020

Authors and Affiliations

  • Keyu Zhang
    • 1
    • 2
    • 3
  • Yin Li
    • 1
    • 2
  • Runhong Wei
    • 1
    • 2
  • Yunke Wang
    • 1
    • 2
  • Yongnian Dai
    • 1
  • Yaochun Yao
    • 1
    • 2
    • 3
    Email author
  1. 1.National Engineering Laboratory for Vacuum MetallurgyKunming University of Science and TechnologyKunmingChina
  2. 2.State Key Laboratory of Complex Nonferrous Metal Resources Clear UtilizationKunming University of Science and TechnologyKunmingChina
  3. 3.Engineering Laboratory for Advanced Battery and Materials of Yunnan ProvinceKunming University of Science and TechnologyKunmingChina

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