Conductive sericite powder preparation method
A sericite powder and roasting technology, which is applied in the field of preparation of light-colored conductive sericite powder, can solve the problems of no antistatic materials, etc., and achieve the effect of wide distribution of raw material resources and high added value
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Embodiment 1
[0023] (1) Roasting: select 100 kg of sericite powder with a thickness of 5 μm, and roast at a temperature of 550° C. for 4 hours.
[0024] (2) surface activation treatment: with the sericite powder of above-mentioned roasting, with the hydrochloric acid aqueous solution of 2~5wt%, by sericite powder: hydrochloric acid solution=1: 3 weight ratio mix slurry, reacted 4 hours in temperature 60 ℃, filter, Wash with water until pH = 6-7; then prepare slurry according to the weight ratio of sericite powder: water = 1: 3, adjust to pH = 10-11 with alkali, react at a temperature of 60°C for 4 hours, filter, and wash with water until pH = Steps 7-8, obtaining surface-activated sericite powder.
[0025] (3) Chemical coating:
[0026] Preparation of group A solution
[0027] SnCl 4 5kg, SbCl 3 0.3kg, AlCl 3 0.05kg, deionized water 95kg, made into A group solution.
[0028] Preparation of group B solution
[0029] Make NaOH into 5-10wt% aqueous solution.
[0030] Use deionized ...
Embodiment 2
[0033] (1) Roasting: select 100 kg of sericite powder with a diameter of 40 μm, and roast at a temperature of 650° C. for 3 hours.
[0034] (2) surface activation treatment: with the sericite powder of above-mentioned roasting, with the hydrochloric acid aqueous solution of 4wt%, by sericite powder: hydrochloric acid solution=1: 4 weight ratio mix slurry, react 3 hours in temperature 70 ℃, filter, water washing to pH=6~7; then prepare the slurry according to the weight ratio of sericite powder: water=1:4, adjust the pH to 10~11.5 with alkali, heat up to 70°C and react for 3 hours, filter and wash with water until pH=7~ 8. Obtain surface-activated sericite powder.
[0035] (3) Chemical coating:
[0036] Preparation of group A solution
[0037] SnCl 4 12kg, SbCl 3 1kg, AlCl 3 0.25kg, deionized water 87kg, made into group A solution.
[0038] Preparation of group B solution
[0039] NaOH was made into 8wt% aqueous solution.
[0040] Use deionized water according to ser...
Embodiment 3
[0043] (1) Roasting: select 100 kg of sericite powder with a diameter of 80 μm, and roast at a temperature of 750° C. for 2 hours.
[0044] (2) surface activation treatment: with the sericite powder of above-mentioned roasting, with the hydrochloric acid aqueous solution of 5wt%, by sericite powder: hydrochloric acid solution=1: 5 weight ratio mix slurry, react 2 hours at 80 ℃ of temperature, filter, water washing to pH=6~7; then prepare the slurry according to the weight ratio of sericite powder: water=1:5, adjust to pH=10~10.5 with alkali, react at a temperature of 80°C for 2 hours, filter and wash with water until pH=7~ 8. Obtain surface-activated sericite powder.
[0045] (3) Chemical coating:
[0046] Preparation of group A solution
[0047] SnCl 4 25kg, SbCl 3 2.0kg, AlCl 3 0.5kg, deionized water 73kg, dubbed A group solution.
[0048] Preparation of group B solution
[0049] Make NaOH into 10wt% aqueous solution.
[0050] Use deionized water according to seri...
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