pyrolusite

The hardness of pyrolusite is low. It is easy to argillization.

软锰矿硬度低，易泥化。

co-roasting process for molybdenite and pyrolusite was newly developed based on the strong oxidizability of molybdenite and the reducibility of pyrolusite, and how to treat the calcine and separate mo and mn was the key of new process.

基于软锰矿的强氧化性和辉钼矿的还原性及资源的综合利用，开发出软锰矿与辉钼矿共同焙烧新工艺，焙砂的处理及Mo，Mn分离是该新工艺的关键。

Ore minerals are composed of psilomelane, pyrolusite, braunite, rhodochrosite and manganocalcite and gangue minerals are composed of magnetite, goethite and pyrite and so on.

矿石矿物主要有硬锰矿、软锰矿、褐锰矿、菱锰矿、钙菱锰矿等。脉石矿物主要有磁铁矿、针铁矿、黄铁矿等。

Results showed that manganese bacterium was adhered on the pyrolusite and oxidized Mn ( II) to Mn ( III) and Mn ( IV), and pyrolusite catalytic oxidation of SO2 was intensified.

结果表明：锰氧化细菌粘附于软锰矿上，氧化Mn（Ⅱ）为Mn（Ⅲ）、Mn（Ⅳ），强化软锰矿催化氧化二氧化硫效果；

A technical study on the preparation of Mn_3O_4 from pyrolusite by phase transformation method

相转变法由软锰矿制备磁性四氧化三锰工艺

Study on Production of Manganese Sulfate by Dry Processes Method With Pyrolusite and Iron Pyrites

两矿干法制取工业硫酸锰的实验研究两矿加浓硫酸熟化法生产硫酸锰

The basic principle and technological process for producing mangano-manganic oxide from cheap pyrolusite by phase transformation method were introduced.

为了降低四氧化三锰的生产成本，介绍了以价格低廉的软锰矿为原料，使用相转变法制备四氧化三锰的基本原理和工艺过程。

The result showed that in different time pyrolusite coexisting component had different effect on desulfurization efficiency and manganese iron.

结果表明，软锰矿的共存组分对于脱硫率及锰离子浓度在不同时间有不同程度的影响。

The mineral components of nodules are mainly pyrolusite, psilomelane and limonite.

锰结核主要由硬锰矿、软锰矿、褐铁矿构成.

Large market demand of manganese products result in increasing emissions of pyrolusite slags.

较大的锰系产品市场需求量，致使锰矿浸渣的排放量大大增加。