Manganese Ore Pyrolusite

Co recovery of manganese from pyrolusite and gold from carbonaceous gold ore was achieved.

Manganese ore pyrolusite. The most important ore minerals are pyrolusite mno2 63 2 percent mn. Pyrolusite is a mineral consisting essentially of manganese dioxide mn o 2 and is important as an ore of manganese. It is also used in the preparation of chlorine and as an agent in coloring and dyes. In 1856 robert forester mushet a british steelmaker used manganese to improve the ability of steel produced by the bessemer process to withstand rolling and forging at elevated temperatures.

It is also a component of the production of steel and was once used for the manufacture of batteries. Pyrolusite common manganese mineral manganese dioxide mno 2 that constitutes an important ore. Historically manganese is named for pyrolusite and other black minerals from the region of magnesia in greece which also gave its name to magnesium and the iron ore magnetite. Pyrolusite is the most common manganese mineral and is an important ore.

The results indicated that the optimum leaching efficiency of 99 31 for manganese and 97 43 for gold could be attained under the conditions that the mass ratio of carbonaceous gold ore to pyrolusite was 2 3 the co roasting temperature was 1073 15 k. Psilomelane m mno mno2 n h2o 45 60 percent. Vernadite mno2 h2o 44 52 percent. Manganese is a strategically valuable metal since it is an essential ingredient in steel and other alloys.

Pyrolusite is one of the most important ore s of manganese. On earth manganese is never found as a free metal but it is found in a number of minerals. Metallic manganese was first isolated in 1774 by johan gottlieb gahn a swedish mineralogist who reduced pyrolusite a manganese dioxide ore with carbon. A common mn mineral although difficult to distinguish from similar mn minerals pyrolusite forms under oxidizing conditions and high ph.

The most important of these minerals is pyrolusite the main ore mineral for manganese. It has a metallic luster a black or bluish black streak and readily soils the fingers. Manganese is a transition metal with a multifaceted array of industrial alloy uses particularly in stainless steels. Manganese ores natural mineral formations with sufficient manganese content to make economically feasible extraction of the metal or its compounds.

Manganese easily reacts with water and air.