XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 1941
and fixed carbon and carbon recovery. Some of the key
findings are described in this article.
MATERIALS AND METHODS
Raw Material
The blast furnace flue dust was obtained from an integrated
steel plant situated in central India. The material was dried
and sieved using a 1 mm sieve to create a representative
sample. The coning and quartering method was used to
ensure the sample was homogenous. The chemical compo-
sition of the bulk material was determined using the wet
chemical method. The mineralogical characteristics of the
samples were analyzed using XRD, SEM-EDS, and stereo
microscopy. The proximate analysis method was used to
estimate the fixed carbon content. The loss on ignition was
determined by heating the sample at 950°C and measuring
the weight loss. Table 1 provides the chemical compositions
of the sample.
Characterization of Raw Material
Size Analysis
The blast furnace flue dust sample was analyzed for its size
distribution using the standard wet sieving method. The
maximum size of the particles was found to be 212 microns.
Among the bulk sample, approximately 35% of the par-
ticles were of size +25 microns. The D80 value of the bulk
sample was measured as 63 microns, which indicates that
the particle sizes are on the finer side. The size distribution
analysis revealed that further grinding is required to effec-
tively separate minerals. Table 2 displays the size distribu-
tion data.
Table 1. Chemical analysis of bulk blast furnace flue dust sample, weight percentage
Fe(T) %FeO %SiO2% Al2O3% CaO %MgO %Fixed Carbon %LOI %
33.64 1.76 8.35 9.88 1.53 2.37 16.52 11.13
Table 2. Size Analysis of bulk blast furnace flue dust sample
Size, micron –300+212 –212+150 –150+100 –105+75 –75+45 –45+25 –25
Wt. %Retained 0.46 2.07 4.14 4.60 22.99 0.92 64.83
Figure 1. Particle size distribution
and fixed carbon and carbon recovery. Some of the key
findings are described in this article.
MATERIALS AND METHODS
Raw Material
The blast furnace flue dust was obtained from an integrated
steel plant situated in central India. The material was dried
and sieved using a 1 mm sieve to create a representative
sample. The coning and quartering method was used to
ensure the sample was homogenous. The chemical compo-
sition of the bulk material was determined using the wet
chemical method. The mineralogical characteristics of the
samples were analyzed using XRD, SEM-EDS, and stereo
microscopy. The proximate analysis method was used to
estimate the fixed carbon content. The loss on ignition was
determined by heating the sample at 950°C and measuring
the weight loss. Table 1 provides the chemical compositions
of the sample.
Characterization of Raw Material
Size Analysis
The blast furnace flue dust sample was analyzed for its size
distribution using the standard wet sieving method. The
maximum size of the particles was found to be 212 microns.
Among the bulk sample, approximately 35% of the par-
ticles were of size +25 microns. The D80 value of the bulk
sample was measured as 63 microns, which indicates that
the particle sizes are on the finer side. The size distribution
analysis revealed that further grinding is required to effec-
tively separate minerals. Table 2 displays the size distribu-
tion data.
Table 1. Chemical analysis of bulk blast furnace flue dust sample, weight percentage
Fe(T) %FeO %SiO2% Al2O3% CaO %MgO %Fixed Carbon %LOI %
33.64 1.76 8.35 9.88 1.53 2.37 16.52 11.13
Table 2. Size Analysis of bulk blast furnace flue dust sample
Size, micron –300+212 –212+150 –150+100 –105+75 –75+45 –45+25 –25
Wt. %Retained 0.46 2.07 4.14 4.60 22.99 0.92 64.83
Figure 1. Particle size distribution