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A method for preparing high-purity calcium fluoride from calcium fluoride sludge

ActiveCN110790295BSimple processSolve the shortage of fluorine resourcesCalcium/strontium/barium fluoridesEnvironmental chemistryFluoride calcium

The invention discloses a method for preparing high-purity calcium fluoride from calcium fluoride sludge. The calcium fluoride sludge is put into an oven for drying, then ball milled by a ball mill and sieved to obtain the undersize A; a certain amount is obtained A, add a certain amount of acid solution and stir to react to obtain a solid-liquid mixture B, filter through filter cloths of different meshes to obtain filter residue C and filtrate D, centrifuge the above filtrate D to obtain precipitate E; take a certain amount of Add sodium hydroxide solution to the precipitate E, filter to obtain calcium fluoride and filtrate F, dry and pulverize the calcium fluoride to obtain powdery high-purity calcium fluoride. The invention can effectively dispose calcium fluoride sludge, prepare high-purity calcium fluoride, solve the problem of shortage of fluorine resources, and has good economic and environmental benefits and broad application prospects.

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Owner:HEFEI UNIV OF TECH +1

1results about How to "Solve the shortage of fluorine resources" patented technology

A method for preparing high-purity calcium fluoride from calcium fluoride sludge

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