Industrial and Metallurgical:
Non Metallurgical Uses:
The most important non-metallurgical application of manganese is in the form of Manganese Dioxide, which is used as a depolarizer in dry-cell batteries. Dry cell consumption in the world exceeds 20 billion units per year. The function of manganese in batteries is simple. In the battery cell, the anode and cathode are essentially humid. During discharge, hydrogen generated at one of the electrodes coats the latter with a gas film, preventing any further wetting, hence cutting off electrical generation. The role of the Manganese Dioxide is to oxidize the Hydrogen and form water. The rate at which this occurs depends on the reactivity of the Dioxide.
Manganese is also used to produce other chemical products for agricultural use or other industrial use, for example, Potassium Permanganate is one of the best known Manganese products that is used in purifying drinking water and treating waste water. Another example of important application of Manganese is “Maneb” (manganese-ethylene bisdithiocarbamate), an organo-chemical compound sold in the form of a yellow powder, which is an agricultural fungicide and is widely used for controlling crop and cereal diseases, downy mildew in vines, scab in fruit trees, banana and peanut diseases among others.