Clean production and preparation method of hydrotalcite for plastic processing
A clean production and hydrotalcite technology, which is applied in the direction of hydrotalcite, chemical instruments and methods, aluminum compounds, etc., can solve the problems that the output of hydrotalcite cannot reach plastic processing users, the cost of downstream users is unacceptable, and the pollution of manufacturers is achieved. Improve production safety, save equipment investment, and save energy
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Embodiment 1
[0027] A clean production preparation method of hydrotalcite for plastic processing. In this embodiment, aluminum hydroxide is selected as the aluminum source, sodium carbonate is selected as the carbonate, and magnesium oxide is selected as the magnesium source, including the following steps:
[0028] (1) Take 39 grams of commercially available aluminum source and 21 grams of carbonate, stir and mix, add 20-80 mL of water to make a paste, and react at room temperature for 1 hour to obtain aluminum salt.
[0029] (2) Add 50 grams of magnesium source and an appropriate amount of molecular sieve catalyst (the catalyst accounts for 0.1-0.3% of the total solid mass) to the above-mentioned aluminum salt, slowly add 10-80 mL of water depending on the dryness, and react for 30-80 minutes under stirring Put it aside, and then carry out surface activation treatment. The activator is PETS modifier. After activation, it is left to age for more than 12 hours;
[0030] (3) The aging produc...
Embodiment 2
[0032] A clean production preparation method of hydrotalcite for plastic processing. In this embodiment, aluminum hydroxide is selected as the aluminum source, sodium carbonate is selected as the carbonate, and magnesium oxide is selected as the magnesium source, including the following steps:
[0033] (1) Put 355 grams of commercially available aluminum source and 190 grams of soluble carbonate into the mixer and start mixing, slowly add 200-600 mL of water, stir and react at room temperature for half an hour, and leave it for 1 hour to make aluminum salt .
[0034] (2) Gradually add 455 grams of commercially available magnesium source and appropriate amount of molecular sieve catalyst (catalyst accounts for 0.1-0.3% of the total solid mass) to the above-mentioned aluminum salt, slowly add 80-300 mL of water and appropriate amount of modifier PETS, and stir to react 1 hour, leave to age until block;
[0035] (3) Dry, mash, and grind the lumps to make hydrotalcite, a stabiliz...
Embodiment 3
[0040] A clean production preparation method of hydrotalcite for plastic processing. In this embodiment, aluminum hydroxide is selected as the aluminum source, sodium carbonate is selected as the carbonate, and magnesium oxide is selected as the magnesium source, including the following steps:
[0041] (1) Mix 39 kg of commercially available aluminum source and 21 kg of commercially available carbonate in a blender, slowly add 40-100 kg of water, and stir for 1 hour to obtain pasty aluminum salt.
[0042] (2) Slowly add 20 kg of commercially available magnesium source and appropriate amount of molecular sieve catalyst (catalyst accounts for 0.1~0.3% of the total mass of the solid) to the above aluminum salt, and after stirring for 10 minutes, slowly add 40-60 kg of water , react under stirring for 20-40 minutes, add a small amount of dispersant according to the situation during the reaction, stir until it becomes a uniform paste, and leave it to age into a block.
[0043] 3. T...
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