Preparation method of high-purity sodium tetrachloroaluminate for sodium salt battery
A sodium tetrachloroaluminate, high-purity technology, applied in the direction of secondary batteries, chemical instruments and methods, circuits, etc., can solve the problems of high price, complex production process, energy consumption and other problems of sodium tetrachloroaluminate, and achieve process can be achieved control, equipment is simple, and the effect of cost reduction
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preparation example Construction
[0021] The preparation method of the sodium salt battery high-purity sodium tetrachloroaluminate of the present invention, as following steps,
[0022] (1) Weigh anhydrous aluminum trichloride (purity 90~99.900%) and anhydrous sodium chloride (purity 95~99.900%) according to the molar ratio of anhydrous aluminum trichloride and anhydrous sodium chloride 1:0.950~1.500 %), then weigh metal aluminum according to the mass ratio of the mass sum of anhydrous aluminum trichloride and anhydrous sodium chloride to metal aluminum (aluminum scrap or aluminum powder or aluminum foil or aluminum block) 1000:1~10;
[0023] (2) Mix anhydrous aluminum trichloride, anhydrous sodium chloride and metal aluminum evenly;
[0024] (3) Add uniformly mixed anhydrous aluminum trichloride, anhydrous sodium chloride and metal aluminum into the reaction kettle and insert high-purity nitrogen for heating; after all materials are liquefied, open the top cover of the reaction kettle and continue stirring C...
Embodiment approach 1
[0029] First, weigh anhydrous aluminum trichloride (purity 98.500%) and anhydrous sodium chloride (purity 99.200%) according to the molar ratio of anhydrous aluminum trichloride: anhydrous sodium chloride 1:0.985, and then according to anhydrous three The mass sum of aluminum chloride and anhydrous sodium chloride: the mass ratio of aluminum chips is 1000:1.5 to weigh metal aluminum;
[0030] Then, mix anhydrous aluminum trichloride, anhydrous sodium chloride and metal aluminum evenly;
[0031] One-step reaction method: add uniformly mixed anhydrous aluminum trichloride, anhydrous sodium chloride and metal aluminum into the reactor; Connect to the tail gas absorption device of the lye pool; set the heating temperature of the reactor to 190°C, turn on the heating switch of the reactor, and raise the temperature of the reactor to the set temperature within 1 hour; after all the materials are liquefied, open the top cover of the reactor and continue stirring 2min; then cover the...
Embodiment approach 2
[0036] First, weigh anhydrous aluminum trichloride (purity 98.500%) and anhydrous sodium chloride (purity 99.200%) according to the molar ratio of anhydrous aluminum trichloride: anhydrous sodium chloride 1:1, then according to anhydrous three The mass sum of aluminum chloride and anhydrous sodium chloride: the mass ratio of aluminum chips is 1000:2.2 to weigh metal aluminum;
[0037] Then, mix anhydrous aluminum trichloride, anhydrous sodium chloride and metal aluminum evenly;
[0038] One-step reaction method: add uniformly mixed anhydrous aluminum trichloride, anhydrous sodium chloride and metal aluminum into the reactor; Connect to the tail gas absorption device of the lye pool; set the heating temperature of the reactor to 210°C, turn on the heating switch of the reactor, and raise the temperature of the reactor to the set temperature within 1 hour; after all the materials are liquefied, open the top cover of the reactor and continue stirring 3min; then cover the top cov...
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