Fabrication of Functional Ceramic Powder by Wet Method and Hydrothermal Method with Shell as Main Material

摘要

In the present invention, shells such as clams, cockles, oyster shells, and the like are mixed with calcium carbonate (CaCO 3) by mechanical pulverization, wet method (or precipitation method)₃), Calcium hydroxide (Ca (OH)₂), Calcium oxide (CaO), calcium sulfate (CaSO₄), Calcium monohydrogen phosphate (CaHPO₄), Cauliflower (Ca₂P₂O₇), Tricalcium phosphate (Ca₃(PO₄)₂), Hydroxyapatite (Ca₁₀(PO₄)₆(OH)₂More particularly, the present invention relates to a method for producing a calcium carbonate powder by a mechanical pulverization method, and a calcium carbonate powder prepared by mixing hydrochloric acid (HCl), sodium carbonate (Na₂CO₃), Sodium hydroxide (NaOH), sulfuric acid (H₂SO₄), Phosphoric acid (H₃PO₄) Aqueous solution, high purity calcium carbonate, calcium hydroxide, calcium oxide, calcium sulfate and calcium hydrogen phosphate powder are produced by a wet process. On the other hand, calcium monohydrogen phosphate powders are used to prepare granular calcium phosphate and calcium phosphate monohydrate powders, and high purity hydroxyapatite powders are prepared by hydrothermal treatment of calcium hydrogenphosphate powders and porous apatite sintered bodies are prepared by using these powder powders.;The functional ceramic powder produced by the present invention is used for chalk, filler (paper, rubber, plastic, etc.), water-based paint, white and colored light emitting phosphors, water purification filters and the like.