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3 results about "Bone ash" patented technology

Bone ash is a white material produced by the calcination of bones. Typical bone ash consists of about 55.82% calcium oxide, 42.39% phosphorus pentoxide, and 1.79% water. The exact composition of these compounds varies depending upon the type of bones being used, but generally the formula for bone ash is: Ca₅(OH)(PO₄)₃. Bone ash usually has a density around 3.10 g/mL and a melting point of 1670 °C (3038 °F). Most bones retain their cellular structure through calcination.

Celadon blank making technology through overweight pressure one-time moulding

InactiveCN106187077AHigh refractorinessWith natural lusterCeramic shaping apparatusClaywaresPotassiumHigh intensity
The invention provides a celadon blank making technology through overweight pressure one-time moulding. The celadon blank making technology comprises the following steps of (1) preparing raw material powder; (2) performing compression moulding; (3) performing sintering on compressed blanks, wherein the sintering temperature is controlled to 1190-1300 DEG C; and (4) trimming the blanks so as to obtain the celadon blank. Raw materials for preparing the raw material powder comprise 35-45% of Longyan kaolin, 15-20% of celadon blank clay powder, 8-20% of potassium feldspar, 7-12% of quartz, 3-8% of hematite, 5-10% of Zijin clay, 6-10% of bone ash, 9-15% of nanometer alpha-Al2O3 powder, and 5-10% of filler. According to the celadon blank making technology disclosed by the invention, the refractoriness of blanks is greatly improved, besides, the made blank has the advantages of being high in strength, natural in glossiness, and fine in texture, and the celadon blank can be produced in batches, and the production cost is reduced.
Owner:LONGQUAN HONGXIN PORCELAIN CO LTD
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