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Figure from:Mineralogical and chemical properties of FGD gypsum from Florina, Greece

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Figure 3. Scanning electron microscope images of FGD gypsum samples: (a) habit of the Florina’s F@D gypsum crystals; (b) size distribution of the gypsum crystals; (c) FGD gypsum crystals, twins in the middle of the image; (d) rhomboid shape of FGD gypsum crystals (Gy) with crystals of feldspars (Fld) and quartz (Qtz).

Figure 3 Scanning electron microscope images of FGD gypsum samples: (a) habit of the Florina’s F@D gypsum crystals; (b) size distribution of the gypsum crystals; (c) FGD gypsum crystals, twins in the middle of the image; (d) rhomboid shape of FGD gypsum crystals (Gy) with crystals of feldspars (Fld) and quartz (Qtz).

Related Figures (7)

Table 1. FGD gypsum utilization in USA and EU
Table 1. FGD gypsum utilization in USA and EU
Figure 1. Location of the Florina (Meliti) lignite-fired power plant from where the FGD gypsum was collected. The lignite deposits and mines of the wider area of Ptolemais-Florina are also indicated (Pt = Ptolemais, Pr = Proastio, Ar = Ardassa, Ko = Komnina, An = Anatoliko, Pel = Pelargos, Pe = Perdikas, Am = Amynteon, Va = Valtonera, Ve = Vegora, Pet = Petres, Vev = Vevi, Lo = Lofi, Ac = Achlada).
Figure 1. Location of the Florina (Meliti) lignite-fired power plant from where the FGD gypsum was collected. The lignite deposits and mines of the wider area of Ptolemais-Florina are also indicated (Pt = Ptolemais, Pr = Proastio, Ar = Ardassa, Ko = Komnina, An = Anatoliko, Pel = Pelargos, Pe = Perdikas, Am = Amynteon, Va = Valtonera, Ve = Vegora, Pet = Petres, Vev = Vevi, Lo = Lofi, Ac = Achlada).
4 Net calorific value, on as received basis. > On dry basis. ° On as received basis. 4 Combustible sulphur, on as received basis. Table 2. Analysis of Florina lignite (Achlada-Meliti, Vevi, Lofi-Meliti and Klidi deposits)’
4 Net calorific value, on as received basis. > On dry basis. ° On as received basis. 4 Combustible sulphur, on as received basis. Table 2. Analysis of Florina lignite (Achlada-Meliti, Vevi, Lofi-Meliti and Klidi deposits)’
Figure 2. X-ray diffraction pattern of the Florina’s FGD gypsum indicating the purity of gypsum.
Figure 2. X-ray diffraction pattern of the Florina’s FGD gypsum indicating the purity of gypsum.
2 Typical chemical composition of FGD gypsum in USA." b Not detected. Table 3. Major element composition (%) of Florina FGD (FFGD) gypsum, as determined by acid digestion and ICP-OES compared with typical composition of US FGD gypsum
2 Typical chemical composition of FGD gypsum in USA." b Not detected. Table 3. Major element composition (%) of Florina FGD (FFGD) gypsum, as determined by acid digestion and ICP-OES compared with typical composition of US FGD gypsum
Table 5. Chemical composition of Florina FGD gypsum (FFGD) crystals (wt%) using microprobe analysis 4 Calculated from mineral formula CaSO4.2H20.
Table 5. Chemical composition of Florina FGD gypsum (FFGD) crystals (wt%) using microprobe analysis 4 Calculated from mineral formula CaSO4.2H20.
3 Detection limit. Table 4. Trace element composition (ppm) of Florina FGD gypsur (FFGD), as determined by acid digestion and ICP-OES, and the concentration range of trace elements in gypsum for cement production (GCP)."6
3 Detection limit. Table 4. Trace element composition (ppm) of Florina FGD gypsur (FFGD), as determined by acid digestion and ICP-OES, and the concentration range of trace elements in gypsum for cement production (GCP)."6
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