Chemically modified starches (from potatoes, corn, tapioca, wheat, peas, and others) are used in papermaking, among other applications, to improve paper strength. The wet process is used most frequently in this case. The starch is slurried in water, then the cationizing agent is added to cause it to react. The starch remains in a suspension throughout the entire process until drying. However the drying method is more economical. In this process, natural starch powder is intensively mixed with the cationizing agent. The etherification reaction then takes place in a reactor. The reactor is connected downstream to a second neutralizing mixer. The starch consistency remains powdery throughout the process.
By AVA GmbH u. Co. KG based in Herrsching, GERMANY.
Mineral Processing includes recovery operations at a mine site and the associated processing plant. The processing operations involve the extraction of metal ores and minerals from the mined rock. Mines use mixers in Backfill or Water Treatment operation. Major applications involving mixers and agitators are found in the processing plant.
By National Oilwell Varco based in Dayton, OHIO (USA).
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