Liquid-phase-method white carbon black and preparation method thereof
A method of silica, white carbon black technology, applied in the field of liquid-phase silica and its preparation, can solve the problems of product quality gap, scarcity of raw materials, huge investment in equipment, etc., to achieve significant social and economic benefits, shorten the preparation time Short, simple process effect
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Embodiment 1
[0034] A kind of liquid-phase method white carbon black and preparation method thereof, comprises the following steps:
[0035] 1) The modulus of the water glass stock solution is 3.3, the mass concentration is 200g of the water glass dilute solution of 12.0%, under stirring at a rotating speed of 300 ± 50rpm, slowly add 600g, the mass concentration is 30% in the ethanol-water solution, the reaction temperature 75°C, react for 60 minutes;
[0036] 2) directly filtering the white carbon black mixed solution obtained in step 1) to obtain white carbon black wet material and filtrate;
[0037] 3) washing and filtering the wet silica material with a certain amount of deionized water at a temperature of 60°C, and repeating the washing until the pH of the wet material is 7.5, and then the washing is completed;
[0038] 4) Transfer the wet material obtained in step 3) into a dryer, spray dry at 300° C., and collect the white carbon black product.
[0039] The specific surface area o...
Embodiment 2
[0041] A kind of liquid-phase method white carbon black and preparation method thereof, comprises the following steps:
[0042] 1) The modulus of the water glass stock solution is 4.0, the mass concentration is 200g of water glass dilute solution of 10.0%, under stirring at a rotating speed of 300 ± 50rpm, slowly add 750g, the mass concentration is 30% in the ethanol-water solution, the reaction temperature 75°C, react for 60 minutes;
[0043] 2) directly filtering the white carbon black mixed solution obtained in step 1) to obtain white carbon black wet material and filtrate;
[0044] 3) washing and filtering the wet silica material with a certain amount of deionized water at a temperature of 60° C., and repeating the washing until the pH of the wet material is 7.8, and the washing is completed;
[0045] 4) Transfer the wet material obtained in step 3) into a dryer, spray dry at 320° C., and collect the white carbon black product.
[0046] The specific surface area of the...
Embodiment 3
[0048] A kind of liquid-phase method white carbon black and preparation method thereof, comprises the following steps:
[0049] 1) The modulus of the water glass stock solution is 5.1, and the mass concentration is 6.0% water glass dilute solution 200g, under stirring at a rotating speed of 300 ± 50rpm, slowly add 400g, the mass concentration is 45% in the ethanol-water solution, the reaction temperature 65°C, react for 120min;
[0050] 2) directly filtering the white carbon black mixed solution obtained in step 1) to obtain white carbon black wet material and filtrate;
[0051] 3) washing and filtering the wet silica material with a certain amount of deionized water at a temperature of 70°C, and repeating the washing until the pH of the wet material is 7.5, and then the washing is completed;
[0052] 4) Transfer the wet material obtained in step 3) into a dryer, spray dry at 240° C., and collect the white carbon black product.
[0053] The specific surface area of the silic...
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