Silica gel aggregation under acidic leaching of high-silica containing zinc calcine

@inproceedings{Zuo2001SilicaGA,
  title={Silica gel aggregation under acidic leaching of high-silica containing zinc calcine},
  author={Jin Zuo},
  year={2001}
}
The effects of pH values, stationary state time, addition of Fe 3+ ion and CaO fast neutralization on the polymerisation and aggregation behavior of silica gel under acidic leaching of high silica containing zinc calcine were investigated. It is found that the dissolved silica is present as a stable colloidal solution at pH around 2.0~4.8 . During above pH area the filterability of the slurry is greatly reduced. Several effective methods to speed silica aggregation in order to precipitate… CONTINUE READING