Manganese powder ingredients - What is manganese powder made of?

Manganese powder properties

Light grey metal, brittle. The relative density is 7.20. Melting point (1244 ℃). The boiling point of 1962 ℃. Dissolve in dilute acid. In water, manganese reacts with water and can interact with halogens, sulfur, phosphorus, carbon and silicon. In smelting, manganese vapors form oxides with oxygen in the air. There are two forms of cube and quadrangular, and has a complex crystal structure of electrolytic metal manganese contains manganese 99.7% or more, pure electrolytic manganese can not be processed, adding 1% nickel into malleable alloy.

Manganese telluride powder preparation method

Manganese carbonate method: manganese carbonate ore and the anodic liquid produced in the process of electrolysis, its composition H2 S0435 ~ 40g/L, (NH4)2 S04 120 ~ 140g/L, Mn 16 ~ 18g/L, after slurry leaching with sulfuric acid, in the solid-liquid ratio of 1. (8 ~ 10), the temperature is 80 ~ 95℃, after 4~ 8h, the pH value of the leaching end point is 3.5, the leaching solution is added manganese dioxide powder as oxidant, and then liquid ammonia is added to neutralize the pH value to 7~7.2. 

Coarse filter residue and filtrate b sulfur and nitrogen in addition to heavy metal, filtered to get available for new electrolytic liquid, into cell electrolyte, anode plate, with silver, tin, antimony, lead alloy anode is made of stainless steel plate, the 24 h electrolysis, electrolytic manganese deposit thickness of 1-5 ~ 2 Omm, remove the cathode board on a regular basis, the passivation, hot water washing, drying, stripping, packaging is the electrolytic manganese products.

Manganese dioxide method: mix pyrolusite and pulverized coal in a certain proportion, through reduction roasting a manganese oxide, reoccupy sulfuric acid solution, liquid ammonia neutralization, coarse filter out impurities, filtrate the join b sulfur nitrogen removal of heavy metals, further fine filtration after match into the electrolyte, the electrolytic manganese metal was deposited on the cathode plate, and then remove the cathode plate after passivation, hot water washing, drying, peeling manganese, manganese metal.

The composition of manganese powder

CAS No.：7439-96-5

Formula：Mn

The molecular weight：54.94

Content Assay：>99.8%

Phosphorus (P): <0.005%

Sulfur (S) : <0.05%

Carbon (C):< 0.02%

Chlorine (Cl):<0.0001%

Manganese powder application

In the iron and steel industry, manganese is mainly used for steel desulfurization and deoxidation. It is also used as an alloy additive to improve the strength, hardness, elastic limit, wear resistance and corrosion resistance of steel. In high alloy steel, IT IS ALSO used as auSTENitic combining element for refining stainless steel, special alloy steel, stainless steel electrode, etc. In addition, it is also used in non-ferrous metals, chemical industry, medicine, food, analysis and scientific research.