Recovery of calcium fluoride from highly contaminated fluoric/hexafluorosilicic acid wastewater

Engineering & Materials Science

• Calcium fluoride 100%
• Wastewater 62%
• Leaching 56%
• Acids 53%
• Silicon 46%
• Recovery 39%
• Calcium 38%
• Sodium hydroxide 26%
• Purification 26%
• Atomic emission spectroscopy 22%
• X ray absorption 20%
• Inductively coupled plasma 17%
• Decomposition 16%
• Fluorine 16%
• Hydrated lime 15%
• Fourier transform infrared spectroscopy 14%
• Molar ratio 14%
• Activation energy 12%
• Silica 12%
• Minerals 11%
• X ray diffraction 11%
• Ions 10%

Physics & Astronomy

• calcium fluorides 81%
• leaching 61%
• acids 52%
• recovery 47%
• calcium 46%
• sodium hydroxides 33%
• silicon 31%
• purification 26%
• decomposition 17%
• sludge 16%
• products 15%
• kinetics 14%
• hydroxides 13%
• fluorine 11%
• minerals 11%
• grade 11%
• infrared spectroscopy 10%
• x rays 10%
• analyzers 10%
• fine structure 9%
• silicon dioxide 8%
• activation energy 8%
• diffraction 6%
• spectroscopy 6%
• ions 5%
• performance 5%

Chemical Compounds

• Leaching 52%
• Fluoride 47%
• Wastewater 46%
• Calcium(0) 45%
• Neutralization 29%
• Sodium Hydroxide 27%
• Acid 20%
• Purification 19%
• Calcium Hydroxide 18%
• Silicon Dioxide 17%
• Fluorine Atom 12%
• Reaction Activation Energy 10%
• X-Ray 8%
• Fourier Transform Infrared Spectroscopy 8%
• Crystal Structure 7%
• X-Ray Diffraction 7%
• Reaction Yield 5%
• Ion 5%