Effect of Chemical Additives on Reduction in Mill Power During Continuous Grinding of Chromite Overburden Materials in a Tumbling Mill: A Case Study

  • Sunita RoutrayEmail author
  • Ranjita Swain
Case Study


Tumbling mills account major share of power consumption in mineral processing industries. In this paper, an attempt is made to minimize the power consumption in continuous grinding of chromite overburden by improving the grinding performance with different chemical additives. The additives taken are calcium chloride, sodium hexametaphosphate, sodium hydroxide and sodium silicate. It is found that sodium silicate is most effective in reduction in power consumption. The enrichment of nickel in sample is studied with grinding time using the same additives. The rheology of mill is also observed with different additives. In all observations, sodium silicate is found to be most suitable among four additives used.


Chromite overburden Grinding Additives Power consumption Tumbling mill Rheology 



Authors are thankful to Chairman of C V Raman group of Institutions, Bhubaneswar, Odisha, India, for providing the support to carry out the research work.


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Copyright information

© The Institution of Engineers (India) 2018

Authors and Affiliations

  1. 1.Mechanical Engineering DepartmentC. V. Raman College of EngineeringBhubaneswarIndia
  2. 2.Chemical Engineering DepartmentC. V. Raman College of EngineeringBhubaneswarIndia

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