| A review concerning the existing approaches to treat,recycle and utilize calcium fluoride sludge is given in this paper,including floatation to recycle CaF2,melting with waterworks sludge,recycling as additive in cement,concrete,porcelain and solidification stabilization of fly ash,and acting as fluorite in steel making. All these methods in this paper are feasible in theory and practice,providing a reference to the treatment and proposal of fluoride contaminated sludge. |
