Preparation method of aluminum polychloride/hydroxyapatite copolymeric material
A technology of hydroxyapatite and polyaluminum chloride, which is applied in chemical instruments and methods, other chemical processes, water/sewage treatment, etc., can solve the problems of low fluoride removal capacity, easily exceeding the aluminum content, and large specific surface area. Achieve the effect of high fluoride removal capacity, long material life and simple use
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[0028] Embodiment 1,
[0029] 1. Using crystalline aluminum chloride as raw material, weigh 800g of uniformly ground crystalline aluminum chloride into the crucible, preheat the muffle furnace, and control the temperature in the furnace to be 250 ℃, put the porcelain crucible into the furnace for roasting , stirring once every 5min, roasting for 30min;
[0030] 2. Add 400 mL of water into the crucible, stir evenly, and the sample is polymerized to obtain a viscous resinous polyaluminum chloride semi-finished product;
[0031] 3. Using calcium hydroxide and phosphoric acid as raw materials, determine the dosage of calcium hydroxide and phosphoric acid according to the molar ratio of calcium to phosphorus of 1.45-1.75, add 500 mL of water to the reactor, heat to 60 ° C, and keep the water temperature;
[0032] 4. Weigh 125g calcium hydroxide into a paste with cold water, add it to the reactor, stir evenly, and obtain a viscous resinous polyaluminum chloride semi-finished produc...
Example Embodiment
[0039] Embodiment 2,
[0040] 1. Using crystalline aluminum chloride as raw material, weigh 1000g of uniformly ground crystalline aluminum chloride into the crucible, preheat the muffle furnace, and when the temperature in the furnace is controlled to be 290 °C, put the porcelain crucible into the furnace for roasting , stirring once every 5min, roasting for 30min;
[0041] 2. Add 500 mL of water to the crucible, stir evenly, and the sample is polymerized to obtain a viscous resinous polyaluminum chloride semi-finished product;
[0042] 3. Using calcium hydroxide and phosphoric acid as raw materials, determine the dosage of calcium hydroxide and phosphoric acid according to the molar ratio of calcium to phosphorus of 1.45-1.75; add 500 mL of water to the reactor, heat it to 75 ° C, and keep the water temperature;
[0043] 4. Weigh 125g of calcium hydroxide into a paste with cold water, add it to the reactor, and stir evenly;
[0044] 5. Add 100g phosphoric acid to 300g water...
Example Embodiment
[0049] Example 3:
[0050] 1. Weigh 625g of uniformly ground crystalline aluminum chloride and put it into the crucible. When the temperature in the furnace is controlled to be 200°C, the porcelain crucible is placed in the furnace for calcination, stirred every 6min, and calcined for 20min;
[0051] 2. Add 300 mL of water to the crucible, stir evenly, and the sample polymerizes to form a viscous resinous substance.
[0052] 3. Add 500 mL of water to the reactor, heat it to 90°C, and keep the water temperature;
[0053] 4. Weigh 125g of calcium hydroxide into a paste with cold water, add it to the reactor, and stir evenly;
[0054] 5. Add 100g phosphoric acid to 300g water and stir to make a solution;
[0055] 6. Add the prepared phosphoric acid solution dropwise to the reactor, control the drop rate to be about 200mL / h, and stir while dropping.
[0056] 7. After adding the phosphoric acid solution, add the viscous resinous substance of the PAC semi-finished product;
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