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Such Tanabe [ 2] The natural manganese ore MnO heat, and then restore to MnO will be transformed into manganese amino formic acid ammonium salt, which exploded into the heat with a greater density of MnCO 3, which will be 3 This MnCO thermal decomposition can be rough MnO 2.

(2) and so on Tanabe natural manganese ore heating reduction MnO, then transform MnO as the manganese oxaminic acid ammonium salt, the latter after pyrolysis density big MnCO3, may make this MnCO3 thermal decomposition thick MnO2.

Tanabe, [2] natural heated revert MnO manganese ore, and then converting MnO manganese amino acid ammonium salt, the latter by heating MnCO3 of broken down into high density, this crude MnO2 MnCO3 thermal decomposition can be made.

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