Method for preparing high-purity ternary precursor
A precursor, high-purity technology, applied in chemical instruments and methods, electrical components, inorganic chemistry, etc., can solve the problems of incomplete removal of magazine metal components, low purity of ternary precursors, and high preparation costs, and achieve good results. , the effect of reducing preparation costs and saving expenses
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Embodiment 1
[0039] A kind of preparation method of high-purity ternary precursor, described preparation method comprises following preparation steps:
[0040] 1) Using waste batteries as raw materials, dismantle, sort and crush waste batteries to obtain slag, immerse the slag in 1.5mol / L concentrated sulfuric acid for 10 minutes and filter, and keep the pH value ≤ 2 during the immersion process , to obtain a filtrate and residue;
[0041] 2) Add the remaining material obtained in step 1) to 2 times the weight of water, then slowly add 1mol / L concentrated sulfuric acid, heat up to 150°C at a rate of 15°C / min, stop adding concentrated sulfuric acid and treat it at a constant temperature for 60min, filter out the filter residue and Adding the filter residue to the primary filtrate obtained in step 1) to obtain a purified solution;
[0042] 3) Add modified biomass particles to the purified solution obtained in step 2), stir slowly at a speed of 20 r / min for 1 hour, and then filter and separa...
Embodiment 2
[0048] A kind of preparation method of high-purity ternary precursor, described preparation method comprises following preparation steps:
[0049] 1) Using waste batteries as raw materials, disassemble, sort and crush waste batteries to obtain slag, immerse the slag in 2mol / L concentrated sulfuric acid for 15 minutes and filter, keep the pH value ≤ 2 during the immersion process, Obtain primary filtrate and residue;
[0050] 2) Add the remaining material obtained in step 1) to 3 times the weight of water, then slowly add 1.5mol / L concentrated sulfuric acid, raise the temperature to 160°C at a rate of 20°C / min, stop adding concentrated sulfuric acid and treat at constant temperature for 45min, filter out the filter residue And adding the filter residue to the primary filtrate obtained in step 1) to obtain a purified solution;
[0051] 3) Add modified biomass particles to the purified solution obtained in step 2), stir slowly at a speed of 15 r / min for 2 hours, and then filter ...
Embodiment 3
[0057] A kind of preparation method of high-purity ternary precursor, described preparation method comprises following preparation steps:
[0058] 1) Using waste batteries as raw materials, disassemble, sort and crush waste batteries to obtain slag, immerse the slag in 2mol / L concentrated sulfuric acid for 10 minutes and filter, keep the pH value ≤ 2 during the immersion process, Obtain primary filtrate and residue;
[0059] 2) Add the remaining material obtained in step 1) to 3 times the weight of water, then slowly add 1.5mol / L concentrated sulfuric acid, raise the temperature to 150°C at a rate of 15°C / min, stop adding concentrated sulfuric acid and treat at constant temperature for 60min, filter out the filter residue And adding the filter residue to the primary filtrate obtained in step 1) to obtain a purified solution;
[0060] 3) Add modified biomass particles to the purified solution obtained in step 2), stir slowly at a speed of 20 r / min for 1.5 h, and then filter an...
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