The role of depressants, which are either inorganic salts, such as sodium silicate, sodium sulfite or organic compounds such as polysaccharides, dextrin and starch derivatives, guar gums, carboxymethylcel lulose and alginates, is to reduce the collection of unwanted gangue which consists of typically tal-caceous or other oxide minerals. This is done by either enhancing the hydrophilic nature of the gangue surface, by preventing the formation of hydrophobic species which might adsorb on the gangue surface or by preventing the coating of unwanted slimes on the mineral surface. Mechanisms of depression also include the formation of large aggregates and the com-plexation of the collector in solution.

Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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