Sodium acetate, the chemical found in many hand warmers, will suddenly crystallize if you prepare a saturated solution and pour it onto a seed crystal.

After adopting crystal seed burning in shaft kiln, the existing LFEF bag filter appeed a serial of abnormal working condition like dew etc.

After adding the crystal change promoter a, the content of FeOOH in iron red was decreased and the temperature of crystal seed preparation was properly raised.