Abstract
Two hundred thousand tons of relatively pure grade of dolomite fines are likely to be generated per annum in course of beneficiation of the low grade rock phosphate ore of Jhamarkotra Mines, Rajasthan by Rajasthan State Mines and Minerals Ltd. The material contains CaO 33%, MgO 19–20%, SiO2 less than 0.1% and P2O5 1.0% by wt, and is extremely fine (>90%–170 BS sieve). Chemical analysis, TGA, DTA and X-ray analysis of the above sample have been carried out. The material has been sintered both by single stage and double stage sintering process at 1650°C. The bulk density of the material achieved by single stage process with additive is around 3.19 gm.cm−3 and by double stage sintering process is 3.32 gm.cm−3. A comparative study in terms of hydration resistance by ASTM—C492 method of the present material and those currently being used by Indian Steel Plants has shown much improved shelf-life of the former. The developed material exhibits high potentiality as lining material in LD converters in steel industry due to low flux content, high density and improved resistance to hydration.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
