Ram Bhagat - Academia.edu (original) (raw)
Papers by Ram Bhagat
ISIJ International, 1999
The paper describes return sinter fines regime and the factors influencing it under the prevailin... more The paper describes return sinter fines regime and the factors influencing it under the prevailing condition of the sintering plant at Bhilai, India. The effect of return sinter fines, basicity and other variables on the yield of sinter and speed of sintering has been evaluated through the pot sintering experiments designed statistically and empirical equations have been established, An optimum level of basicity ratio and that of return fines input have been observed for the strand productivity. The basicity ratio and coke breeze content are inter-influenced: greater amount of coke breeze helps in productivity improvement when sintering is carried out at higher basicity level. A greater amount of return fines in the mix (through screening out the-5 mm size. fraction from the sinter at blast furnace and its recirculation) decreases the throughput of the fresh material on the sintering strand. However, part of loss is compensatedby a simultaneous increase in the yield of sinter.
steel research international
Scandinavian Journal of Metallurgy, Apr 1, 1996
Mineral Processing and Extractive Metallurgy, 2002
European Polymer Journal, 2001
... The flocculation performance of grafted sodium alginate and other polymeric flocculants in re... more ... The flocculation performance of grafted sodium alginate and other polymeric flocculants in relation to iron ore slime suspension. Tridib Tripathy a , RP Bhagat b and RP Singh Corresponding Author Contact Information , a. a Materials Science Centre, IIT, Kharagpur 721302, India ...
European Polymer Journal, 1999
... acrylamide. T. Tripathy a , SR Pandey a , NC Karmakar a , RP Bhagat b and RP Singh Correspond... more ... acrylamide. T. Tripathy a , SR Pandey a , NC Karmakar a , RP Bhagat b and RP Singh Corresponding Author Contact Information , E-mail The Corresponding Author , b.a Materials Science Centre, IIT, Kharagpur 721302, India. ...
The mineralogical investigation of typical indurated pellets, which were generated through the pe... more The mineralogical investigation of typical indurated pellets, which were generated through the pelletisation experiments of the concentrate from dump fines of Gua Iron Ore mines of SAIL, has been reported in the present paper.
Pelletisation experiments were conducted with the iron ore concentrates (Fe = 65.1%) of varying mesh of grind having the -45 micron size constituents 71, 81 and 93 wt.% respectively. The crushing strength (CS) of the green pellets as well as heat hardened ones was determined.
The CS of heat hardened pellets improved considerably with the concentrate which has undergone very fine mesh of grind even at lower bentonite consumption. Besides, minor amount of flux and coke could be incorporated during the course of pelletisation. Further grinding of bentonite did help in the improvement of CS.
The crushing strength of the heat hardened pellet was correlated with its mineralogy. Typically a significant change in the mineralogy was observed with reference to core, intermediate and outer layers of the pellet which signifies a heterogeneous and, in some cases, a weaker pellet. .
Key words: pelletisation, different mesh of grind, bentonite, green pellet, heat-hardening.
The present study has been made to utilise the coal chars generated in the rotary kiln / certain ... more The present study has been made to utilise the coal chars generated in the rotary kiln / certain shaft based DR process through the pelletisation. The process aims to generate valued material from the generated wastes which could be used in the DR plant itself as additional feed.
International Journal of Mineral Processing, 1996
High intensity magnetic separation of tungsten ore slime samples from Rajasthan, India, assaying ... more High intensity magnetic separation of tungsten ore slime samples from Rajasthan, India, assaying 5.30% and 2.87% WO 3 , was studied with the application of polymeric dispersant. The present study reveals that WO 3 assayed more in the finer fraction of the slime. The grade of the ...
The effect of granulometric composition of ores vis-à-vis that of sinter mix, on the sintering in... more The effect of granulometric composition of ores vis-à-vis that of sinter mix, on the sintering indices namely, productivity, reduction -degradation index (RDI) and tumbler index (TI) was studied through the pot sintering experiments with Joda and Noamundi ores of Tata Steel. These ores had LOI content 3.8% and 2.9% and +6.3 mm content 45% and 26% respectively. Sinter basicity (CaO/SiO2) and MgO content were varied in the 2.1-2.5 and 1.4% to 1.8% range, respectively according to the blast furnace requirement.
ISIJ International, 1999
The paper describes return sinter fines regime and the factors influencing it under the prevailin... more The paper describes return sinter fines regime and the factors influencing it under the prevailing condition of the sintering plant at Bhilai, India. The effect of return sinter fines, basicity and other variables on the yield of sinter and speed of sintering has been evaluated through the pot sintering experiments designed statistically and empirical equations have been established, An optimum level of basicity ratio and that of return fines input have been observed for the strand productivity. The basicity ratio and coke breeze content are inter-influenced: greater amount of coke breeze helps in productivity improvement when sintering is carried out at higher basicity level. A greater amount of return fines in the mix (through screening out the-5 mm size. fraction from the sinter at blast furnace and its recirculation) decreases the throughput of the fresh material on the sintering strand. However, part of loss is compensatedby a simultaneous increase in the yield of sinter.
steel research international
Scandinavian Journal of Metallurgy, Apr 1, 1996
Mineral Processing and Extractive Metallurgy, 2002
European Polymer Journal, 2001
... The flocculation performance of grafted sodium alginate and other polymeric flocculants in re... more ... The flocculation performance of grafted sodium alginate and other polymeric flocculants in relation to iron ore slime suspension. Tridib Tripathy a , RP Bhagat b and RP Singh Corresponding Author Contact Information , a. a Materials Science Centre, IIT, Kharagpur 721302, India ...
European Polymer Journal, 1999
... acrylamide. T. Tripathy a , SR Pandey a , NC Karmakar a , RP Bhagat b and RP Singh Correspond... more ... acrylamide. T. Tripathy a , SR Pandey a , NC Karmakar a , RP Bhagat b and RP Singh Corresponding Author Contact Information , E-mail The Corresponding Author , b.a Materials Science Centre, IIT, Kharagpur 721302, India. ...
The mineralogical investigation of typical indurated pellets, which were generated through the pe... more The mineralogical investigation of typical indurated pellets, which were generated through the pelletisation experiments of the concentrate from dump fines of Gua Iron Ore mines of SAIL, has been reported in the present paper.
Pelletisation experiments were conducted with the iron ore concentrates (Fe = 65.1%) of varying mesh of grind having the -45 micron size constituents 71, 81 and 93 wt.% respectively. The crushing strength (CS) of the green pellets as well as heat hardened ones was determined.
The CS of heat hardened pellets improved considerably with the concentrate which has undergone very fine mesh of grind even at lower bentonite consumption. Besides, minor amount of flux and coke could be incorporated during the course of pelletisation. Further grinding of bentonite did help in the improvement of CS.
The crushing strength of the heat hardened pellet was correlated with its mineralogy. Typically a significant change in the mineralogy was observed with reference to core, intermediate and outer layers of the pellet which signifies a heterogeneous and, in some cases, a weaker pellet. .
Key words: pelletisation, different mesh of grind, bentonite, green pellet, heat-hardening.
The present study has been made to utilise the coal chars generated in the rotary kiln / certain ... more The present study has been made to utilise the coal chars generated in the rotary kiln / certain shaft based DR process through the pelletisation. The process aims to generate valued material from the generated wastes which could be used in the DR plant itself as additional feed.
International Journal of Mineral Processing, 1996
High intensity magnetic separation of tungsten ore slime samples from Rajasthan, India, assaying ... more High intensity magnetic separation of tungsten ore slime samples from Rajasthan, India, assaying 5.30% and 2.87% WO 3 , was studied with the application of polymeric dispersant. The present study reveals that WO 3 assayed more in the finer fraction of the slime. The grade of the ...
The effect of granulometric composition of ores vis-à-vis that of sinter mix, on the sintering in... more The effect of granulometric composition of ores vis-à-vis that of sinter mix, on the sintering indices namely, productivity, reduction -degradation index (RDI) and tumbler index (TI) was studied through the pot sintering experiments with Joda and Noamundi ores of Tata Steel. These ores had LOI content 3.8% and 2.9% and +6.3 mm content 45% and 26% respectively. Sinter basicity (CaO/SiO2) and MgO content were varied in the 2.1-2.5 and 1.4% to 1.8% range, respectively according to the blast furnace requirement.