| OBJECT: |
Dispersion of food grade Carbon Black into water and propylene glycol. 25% carbon black and surfactant (Tween 80) into water. Final viscosity 10,000 cps pseudo plastic.
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PROBLEM:
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Provide excellent dispersion "in minimum time". Avoid agglomeration caused by powder floating on surface. |
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RESULT:
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Mixer is started in down-mode in water. Surfactant, propylene glycol are added into vortex, then carbon black for prewetting and predispersion. Reverse mixer to up-mode for one hour to achieve final dispersion. |
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AB MIXER:
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C-3-2, 60" immersion, 5-3/4" rotor with 25 HP motor. Used in 500 gallon tank measuring 48" diameter x 64" high with dished bottom. Batch size 300 gallons.
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