Tumble Agglomeration

StUl another ore preparation is the nodulizing process where the ore is heated in a rotary kiln to incipient fusion. The tumbling action in the kiln causes the phosphate ore to cohere and form spheroidal agglomerates. Combustion of carbon monoxide from the furnaces is used along with supplemental fuel to supply heat to 1300—1500°C. A boring bar is used near the kiln discharge to aid in breaking up the fused ore. The material is then cooled, cmshed, and screened to the appropriate size for furnace feed. 

Fig. 2. Compression strength of agglomerates formed into spherical shape by tumbling where = mean disperse particle diameter (8). To convert kPa to...

Four principal mechanisms are used to bring fine particles together into larger agglomerates agglomeration by tumbling and other agitation... 

Tumblei with agglomerate breaker See Sec. 20 Tumbling Mills, for ball mill, rod mill, and vibratory pebble mill which will accomplish mixing along with size reduction. 

Pelletization often does not require the use of excipients and may offer an alternative to blending for high dose therapeutics. The process involves deliberate agglomeration of the fine drug material into less cohesive, larger units [23]. Pelletization is usually achieved by vibratory sieving or any tumbling process. All processes require particu-... 

Low soil moisture allows bed slipping and sfiding as opposed to tumbling, which promotes agglomeration and agglomerate growth. The moisture content of soil to be treated by this method should be between 15 and 18%. 

Newitt and Conway-Jones defined (2) pelletization as the process of transforming a wet, solid mass of finely divided particles into dry, spherical bodies by a continuous rolling or tumbling motion. In a broader sense, pelletization is an agglomeration event used in many powder processes, either for ease of handling or to add value to the product. It spans a range of industries that process solid particles into some suitable form, such as metallurgical, chemical, plastics, fertilizer, rubber, food, and pharmaceuticals (3-6). Since spheres have the lowest surface to volume ratio and exhibit... 

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