Production
Naturally occurring manganese dioxide contains impurities and a considerable amount of manganese in its 3+ oxidation state. Only a limited number of deposits contain the γ modification in purity sufficient for the battery industry. The production of ferrite also requires high purity manganese dioxide. Therefore the production of synthetic manganese dioxide is important. Two groups of methods are used, yielding "chemical manganese dioxide" (CMD) and "electrolytical manganese dioxide" (EMD). The CMD is mostly used for the production of ferrites, whereas EMD is used for the production of batteries.
Read more about this topic: Manganese Dioxide
Famous quotes containing the word production:
“... if the production of any commodity necessitates the sacrifice of human life, society should do without that commodity, but it can not do without that life.”
—Emma Goldman (18691940)
“The production of obscurity in Paris compares to the production of motor cars in Detroit in the great period of American industry.”
—Ernest Gellner (b. 1925)
“Perestroika basically is creating material incentives for the individual. Some of the comrades deny that, but I cant see it any other way. In that sense human nature kinda goes backwards. Its a step backwards. You have to realize the people werent quite ready for a socialist production system.”
—Gus Hall (b. 1910)