The samples were recorded as the CaAl-x-y, where x and y meant the
calcination temperature and carbon black dosage, respectively.
In addition, depending iron oxides formed during the sample
calcination, the acid-base properties can be modified [12, 13].
The coloration of pigments obtained at different
calcination temperatures was evaluated by the CIELAB colorimetry or the [L.sup.*][a.sup.*][b.sup.*] colorimetric parameters.
Completion of the
calcination process facility was marked at a ceremony attended by Riita Swan, the Finnish Ambassador to the UAE, EGA's managing director and chief executive officer Abdulla Kalban, and Kalle Harkki, executive vice president , Metals, Energy & Water of Outotec, the Finnish minerals and metals technology company that is the main contractor on the
calcination process facility.
The influence of
calcination temperature on the iron removal was studied in the temperature range of 500-1000 [degrees]C with holding time 2 h.
The shape of periclase in LHC clinkers was mostly polygonal or circular with clear boundaries, and it did not vary with
calcination conditions changing.
Calcination. Figure 5(e) showed the TGA thermograms of the RC3 granule with and without silica coating where silica-coating condition was fixed to be at a concentration of TEOS, ammonia, and deionized water and reaction time of 0.13 M, 1.0 M, 2.0 M, and 2 hr, respectively.
It was used to optimize the
calcination temperature and time in the experimental domains described in Table 1.
Subsequently, the sample was subjected to 15 carbonation-decarbonation cycles, where a cycle consists of 15 min of carbonation at 923 K with pure C[O.sub.2] flow (50 mL [min.sup.-1]) and 10 min of
calcination at 1 073 K in [N.sub.2] (50 mL [min.sup.-1]) with a heating and cooling rate of 10 K [min.sup.-1].
Soft modeling methods based on neural network, support vector machines, and subspace method were used to predict the output index, the
calcination temperature, and tail temperature of the kiln, respectively [9-11].
The efficient mixing of a pozzolanic material in OPC is a consequence of the
calcination of an industrial waste [13].
At the same time, standards are also rising for the pigments used.The CICPs, manufactured in a high-temperature
calcination process (above 800[degrees]C/1500[degrees]F),meet these rising quality standards while taking ecological issues into account.
