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    • 7. 发明授权
    • Method of manufacturing calcium phosphate using phosphorus in plants
    • 在植物中使用磷制磷酸钙的方法
    • US4906444A
    • 1990-03-06
    • US307828
    • 1989-02-07
    • Torao OhtsukaMakoto FukayaHideo Tagai
    • Torao OhtsukaMakoto FukayaHideo Tagai
    • C01B25/32
    • C01B25/32
    • A method of manufacturing calcium phosphate using phosphorus in plants. The method comprising the steps of firstly slurrying raw material containing phosphorus, including plants particularly such as soybean, corn, oil meal of the rice bran and the like; adding one or more selected among oxide, hydroxide and carbonate of calcium to the slurry and mixing them; controlling Mg component derived from the raw material so that the Mg/Ca mole ratio is in the range of 0.25 or less; dehydrating and drying them; controlling pH of the slurry and 7.5 or higher and slowly heating them within the temperature range from 150.degree. C. to 650.degree. C. in the oxidation atmosphere to dissipate and remove carbon; and finally raising the temperature to burn them within the temperature range from 700.degree. C. to 1550.degree. C. in the oxidation atmosphere.
    • 在植物中使用磷制造磷酸钙的方法。 该方法包括以下步骤:首先将包含磷的原料,包括特别是诸如大豆,玉米,米糠油粉等的植物浆料化; 将一种或多种选自氧化物,氢氧化物和碳酸钙的一种或多种添加到浆料中并将其混合; 控制源自原料的Mg成分,使Mg / Ca摩尔比在0.25以下的范围内; 脱水干燥; 控制浆料的pH值为7.5以上,并在氧化气氛中在150〜650℃的温度范围内缓慢加热,以便去除和去除碳; 最后在氧化气氛中升温至700〜1550℃的温度范围。