Dispersion and grinding

Schilde, C., Breitung-Faes, S., and Kwade, A. (2007) Dispersing and grinding of alumina nano particles by different stress mechanisms. Ceramic Forum International 12-17. 

Uses Dispersant and grinding aid for acid, direct, disperse, and reactive dyestuffs Features Partial replacement for lignin sulfonates in grinding Properties Sm. uniibnn particle size Cinwet 936-G [Evonik Stockhausen]... 

Uses Emulsifier for chlorinated soivs., olein, veg. oils, and wax, pesticides dye leveling agenL solubilizer for perfumes pigment dispersant and grinding aid Regulatory EPA approved... 

Micropowders are added to a wide variety of material used in industry, where they provide nonstick and sliding properties. They are incorporated into the product by blending and grinding. To disperse weU, the powder must have good flow properties. Conditions that make the powder sticky should be avoided. 

Dispersing Agents and Grinding Aids There is no doubt that grinding aids are helpful under some conditions. For example, surfactants make it possible to ball-mill magnesium in kerosine to 0.5- Im size [Fochtman, Bitten, and Katz, Ind. Png. Chem. Prod. Res. Dev., 2, 212-216 (1963)]. Without surfactants the size attainable was 3 [Lm, and of course the rate of grinding was very slow at sizes below this. Also, the water in wet grinding may be considered to act as an additive. 

Dietary preparation involving liquid materials frequently results in either wet feed in which the test article does not disperse or formation of gumballs feed and test material that form discernible lumps and chemical hotspots. Drying and grinding of the premix to a free-flowing form prior to mixing the final diets may be required however, these actions can affect the chemical nature of the test article. 

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