Production process of preparing white carbon black from rice husk ash
A production process and technology of rice husk ash, applied in the field of production technology for preparing white carbon black, can solve the problems of low product whiteness and purity, simple and extensive production process, large energy consumption in the production process, etc. Whiteness, good quality, the effect of reducing the content
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Embodiment 1
[0040] Utilize rice husk ash to prepare the production technology of white carbon black, concrete process steps are as follows:
[0041] A. Pretreatment of rice husk ash:
[0042] After removing impurities, the rice husk ash was crushed to 100 meshes, water 11 times its mass was added to the rice husk ash, and a compound chelating agent a with a mass of 0.34% of the rice husk ash was added, soaked at 40°C for 3 hours, then centrifuged and washed with water. Dry at 500°C to obtain the pretreated rice husk ash for subsequent use;
[0043] Wherein the complex chelating agent a is made up of aminotriacetic acid, N-carboxyethylethylenediaminetriacetic acid, aminotrimethylene phosphonic acid, and the mass ratio of each component is, aminotriacetic acid: N-carboxyethylethylenediaminetriacetic acid Acetic acid: amino trimethylene phosphonic acid = 2.6: 1.2: 0.7;
[0044] B, the preparation of water glass:
[0045] Reaction principle: SiO 2 +NaOH→Na 2 O. SiO 2 +H 2 o
[0046]Mi...
Embodiment 2
[0060] Utilize rice husk ash to prepare the production technology of white carbon black, concrete process steps are as follows:
[0061] A. Pretreatment of rice husk ash:
[0062] After removing impurities, the rice husk ash was crushed to 100 meshes, water 8 times its mass was added to the rice husk ash, and a compound chelating agent a with a mass of 0.3% of the rice husk ash was added, soaked at 35°C for 2 hours, then centrifuged and washed with water. Dry at 400°C to obtain the pretreated rice husk ash for subsequent use;
[0063] Wherein the complex chelating agent a is made up of aminotriacetic acid, N-carboxyethylethylenediaminetriacetic acid, aminotrimethylene phosphonic acid, and the mass ratio of each component is, aminotriacetic acid: N-carboxyethylethylenediaminetriacetic acid Acetic acid:amino trimethylene phosphonic acid=2:1:0.5;
[0064] B, the preparation of water glass:
[0065] Reaction principle: SiO 2 +NaOH→Na 2 O. SiO 2 +H 2 o
[0066] Mix the pret...
Embodiment 3
[0080] Utilize rice husk ash to prepare the production technology of white carbon black, concrete process steps are as follows:
[0081] A. Pretreatment of rice husk ash:
[0082] After removing impurities, the rice husk ash was crushed to 100 meshes, water 13 times its mass was added to the rice husk ash, and a compound chelating agent a with 0.4% of the mass of the rice husk ash was added, soaked at 50°C for 4 hours, then centrifuged and washed with water, Dried at 550°C to obtain the pretreated rice husk ash for subsequent use;
[0083] Wherein the complex chelating agent a is made up of aminotriacetic acid, N-carboxyethylethylenediaminetriacetic acid, aminotrimethylene phosphonic acid, and the mass ratio of each component is, aminotriacetic acid: N-carboxyethylethylenediaminetriacetic acid Acetic acid: amino trimethylene phosphonic acid = 3: 1.5: 1;
[0084] B, the preparation of water glass:
[0085] Reaction principle: SiO 2 +NaOH→Na 2 O. SiO 2 +H 2 o
[0086] Mi...
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