Leaching of Turkish Oxidized Pb–Zn Flotation Tailings …
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Table 1 (continued)
Acids
Molecular structure
Name: Formic
acid—(FA)
Formula: HCOOH
Molecular mass: 46.03 g/
mol
Density: 1.22 g/cm 3
Solubility in water:
10 g/100 mL at 20 °C
Acidity constant: 1.78 ×
10 −4 (pK a : 3.74)
Name: Tartaric
acid—(TA)
Formula: C 4 H 6 O 6
Molecular mass:
150.09 g/mol
Density: 1.79 g/cm 3
Solubility in water:
20.6 g/100 mL at 20 °C
Acidity constant: 1.0 ×
10 −3
Name: Oxalic
acid—(OA)
Formula: C 2 H 2 O 4
Molecular mass:
90.03 g/mol
Density: 1.90 g/cm 3
Solubility in water:
9.0–10.0 g/100/mL at
20 °C
Acidity constant: 5.9 ×
10 −2 (pK a : 1.23)
Name: Ascorbic
acid—(AA)
Formula: C 6 H 8 O 6
Molecular mass:
176.12 g/mol
Density: 1.65 g/cm 3
Solubility in water:
33.0 g/100 mL at 20 °C
Acidity constant: 6.7 ×
10 −5 (pK a1 : 4.17)
Materials and Methods
Material and Its Characterisation
For this study, 100 kg representative Pb–Zn oxide flotation tailing samples were
taken from Kayseri region of Turkey. Dry tailings were collected from tailing dam.