|  | | | Realise the problem Solve the problem / Emulsifying in a batch process In the Chemical Industry as well as in the Pharmaceutical and Cosmetics Industry, emulsifying in a batch process is a significant processing step. Problems in the production will follow if the incorrect or inappropriate mixing equipment is selected Emulsions are based on liquids that under normal conditions are not easy to be mixed together to a homogeneous mixture. The physical basis for this behaviour on one hand is the different density, and on the other hand the electro-chemical properties of the liquids involved. Only when using mechanical energy in form of shear energy and an emulsifier, it is possible to homogeneously combine two or more immiscible liquids to an inseparable mixture, a stable emulsion......... | Powder Induction and Pigmenting Dust-free and effective Powdery raw materials are used in almost each product in the lacquer and paint industry, in all sealing compounds, adhesives, and construction chemicals. They are being used as fillers, thickeners, matting agent, conserving agent, improvement for adhesion, anti suspending or thixotropic additives and many others and last but not least as pigments......... | Pectin in fruit juice Adding the Pectin directly into the ready made product (fruit juice). The direct mixing-in is the most difficult method. In case a simple stirrer is installed into the vessel only and the Pectin is added from the top, then the Pectin must be homogeneously pre-mixed in its dry condition with a lot of sugar (Ratio 1:5 to 1:10) or any other powdery component of the receipt. The adding has to be effected very very slowly and even then it cannot be avoided that the Pectin is only partially combusted......... | Simultaneously Wetting and Dispersing Powder induction into liquids A variety of methods are available to induct powdery materials into liquids.The main aim is to achieve an air-free dispersion of the solid material in the liquid. We distinguish between batch processes, in-line processes and processes where the product is produced in a batch system but is continuously pumped out of the processing vessel. Many users, not always familiar with powder treatment, normally opt for the continuous in-line system but they ignore the fact that powder is itself a dispersion of solid material in air. The air is an unwanted element in the final product. This article tries to determine the amount of air that is taken into the product when the powder is wetted and what effect that air has on the dispersion process.................. |
|
|