Manganese Carbide Background and Overview

Manganese carbide synthesis method

A mixture of powdered manganese and carbon is prepared by reacting at about 2200°C.

Manganese carbide preparation

A method for preparing manganese carbide by gas-based reduction of manganese oxides. After mixing manganese oxide, binder and water, agglomerates and drying, and the obtained dry blocks are placed in a mixed atmosphere containing H2, CH4, CO and N2 , and calcined at a temperature of 1100-1300 °C to obtain manganese carbide products. The specific steps are as follows: the mass percentage content of -325 mesh grade is 90% of analytically pure manganese dioxide and manganese tetroxide, mixed with 0.5% CMC and 7.5% moisture, and then pelleted, and then dried. The dried samples were calcined in an atmosphere of CH4 vol%, H2 vol0%, CO vol%, N2 volP%, calcination temperature 1150 ℃, calcination time 120min, and then in N2 atmosphere After cooling to room temperature, the obtained calcined product is a manganese carbide product, and the conversion rate of manganese dioxide is 95%.

Manganese carbide Mn3C powder overview

Manganese carbideis a stable compound formed from manganese and carbon. The molecular formula is Mn3C, the melting point is about 1520°C, and the density is 6.89g/cm3. Manganese carbide burns rapidly in oxygen and decomposes in water to form manganese hydroxide, methane and hydrogen. It is easy to react with acid and decompose, and it is easy to react with chlorine and fluorine, and it is easy to decompose into manganese and carbon at high temperature.

The heat of formation of manganese carbide is △from(298K)=-(15.06±12.55)kJ/mol. When smelting high-carbon ferromanganese or manganese-silicon alloy in blast furnace or electric furnace, what is obtained is not pure manganese or manganese silicide, but manganese carbide. Therefore, the heat absorbed by the reaction is less than the heat of reduction to metallic manganese or manganese silicide. That is, the reaction initiation temperature is relatively low. Therefore, high carbon ferromanganese contains more carbon. When smelting silicon-manganese alloy, the generated manganese carbide Mn3C encounters silicon to form silicide MnSi, which is more stable than Mn3C, and extrudes the carbon in Mn3C to obtain manganese-silicon alloy.

Due to the complex preparation process of electrolytic manganese metal, manganese carbonate ore and manganese oxide ore are mainly obtained by acid hydrolysis, impurity removal, electrolysis and other processes. The manganese carbonate ore acid leaching method can directly use the chemical reaction of sulfuric acid and manganese carbonate to prepare manganese sulfate solution, and then prepare electrolyte through a series of processes such as neutralization, purification and filtration, and add additives such as selenium. Sulfur dioxide, ammonium sulfite, etc. can enter the electrolytic cell for electrolysis; the production process of electrolytic manganese by manganese oxide reduction-acid leaching method is different from the production process of manganese carbonate. The main reason is that manganese dioxide does not react with sulfuric acid under normal conditions, and must be treated as divalent manganese, and then react with sulfuric acid to prepare manganese sulfate solution. The treatment method is generally roasting, that is, manganese dioxide and a reducing substance (usually coal) are mixed together, and then sealed and heated. C reduces tetravalent manganese to two at a certain temperature. Manganese is pulverized, then acid leached and impurities removed to obtain electrolyte. 2) High melting temperature, up to 1300℃～1500℃. According to the analysis of the Mn-C binary phase diagram, the melting point of the Mn-C system is as high as 1300 °C. In order to make the reaction complete, high temperature must be guaranteed, and induction furnace smelting is often used. 3) Since the whole process is in a molten state, the requirements for the materials and refractories of the roasting equipment are relatively high. At present, my country's industry is developing in the direction of environmental protection and energy saving. Therefore, it is of great practical significance to develop a new technology for low-temperature, economical, clean and efficient preparation of manganese carbide.

Application of manganese carbide Mn3C powder

Manganese carbide Mn3C powder is used in hard coatings, indicators, welding materials, spraying tools, steel industry, aerospace and other fields.

As a grain refiner for cermets and tungsten carbide, manganese carbide can significantly improve the properties of alloys.

Manganese carbide can be used to prepare manganese tetroxide. Manganese tetroxide is one of the important raw materials for the production of manganese-zinc ferrite soft magnetic materials in the electronics industry, and is widely used. According to reports, the manganese carbide hydrolysis method is one of the preparation methods of manganese tetroxide powder. The research discloses a method for producing trimanganese tetroxide from carbon-manganese alloy, a one-step method for producing trimanganese tetraoxide with low selenium and high specific surface area from carbon-manganese alloy, and a method for preparing Mn3O4 nano-powder by manganese carbide hydrolysis and oxidation. The preparation of Mn3O4 powder by manganese (transition metal carbide) hydrolysis and oxidation method does not involve catalysts, acids, alkalis and other chemical reagents. Compared with the preparation of Mn3O4 by electrolytic manganese powder suspension oxidation, it is obviously a veritable green process. However, the preparation of manganese carbide is the key to the preparation of Mn3O4 materials by the hydrolysis of manganese carbide. In this method, 92% electrolytic metal manganese (high purity) and 8% graphite are smelted in a 50kg induction furnace (temperature up to 1500°C), the metal manganese and graphite are placed in a graphite crucible, and the graphite is decomposed into fine particles. The pellets are melted in the liquid phase alloy as much as possible, and after the charge is fully melted, it is kept for a certain period of time, and then rapidly cooled to obtain a manganese carbide alloy block. The alloy block is crushed into powder.

Manganese tetroxide is one of the important raw materials for the production of manganese-zinc ferrite soft magnetic materials in the electronics industry, and has been widely used.

Manganese carbide can be used to prepare transformer oil. The method is simple and easy to implement, suitable for large-scale production, can prolong the replacement time of transformer oil, and reduce potential safety hazards.

Manganese carbide Mn3C powder price

The price of manganese carbide Mn3C powder varies randomly with the production cost of manganese carbide Mn3C powder, transportation cost, international conditions, exchange rate, market supply and demand and other factors. Tanki New Materials Co.,Ltd aims to help various industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full range of customized services. If you are looking for manganese carbide Mn3C powder, please feel free to contact us for the latest price of manganese carbide Mn3C powder.

Manganese Carbide Mn3C Powder Supplier

As a global supplier of manganese carbide Mn3C powders, Tanki New Materials Ltd. has extensive experience in advanced engineering material properties, applications and cost-effective manufacturing. The company has successfully developed a series of powder materials (including boron carbide, aluminum carbide, titanium carbide, etc.), high-purity targets, functional ceramics and structural devices, and provides OEM services.