New technology for producing manganese sulfide
A new process, manganese sulfide technology, applied in inorganic chemistry, manganese compounds, chemical instruments and methods, etc., can solve the problems of complex production process, low product purity, high impurity content, etc., to improve machinability, ensure purity, and high purity Effect
Inactive Publication Date: 2010-10-20
莱芜市金石粉末冶金有限公司 +1
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Problems solved by technology
At present, the production method of this kind of product is mainly to adopt manganese ore or manganese compound, through adding a reducing agent or displacing agent, to carry out chemical reaction, the product produced is low in purity, and the use effect is poor. Stromo; J. Avidson for the preparation of manganese sulfide by heating granular or aggregated manganese sulfate to at least 700°C in the presence of at least one reducing agent, the The production process of this production method is complex, and the product produced by it has low purity and high impurity content, which is not conducive to the final performance of the product.
Method used
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Embodiment Construction
[0007] A kind of production method of manganese sulfide of preferred embodiment of the present invention, for example, single furnace produces 50Kg manganese sulfide, weighs a certain amount of sulfur and manganese powder according to technological requirement, then it is stirred evenly with mixer, puts into reaction furnace After closing, draw a vacuum, then start to heat up, until the pressure on the pressure gauge reaches 0.1Mp, open the closed valve immediately, and discharge the volatilized sulfur into the alkaline liquid. When the temperature rises to 250°C, observe the pressure gauge, the pressure When it is lower than 0.1Mp, the automatic control is set by the pressure reducing valve of the exhaust pipe, and the temperature is kept for 6 hours. After the heat preservation is over, the furnace is taken out and the temperature is naturally lowered.
[0008] At room temperature, take out the well-reacted material, grind and crush it, and winnow to control the particle size...
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The invention relates to a new technology for producing high-purity and non-oxidation manganese sulphide. After being fully and evenly mixed, pure manganese powder and sulphur are put into a resistance furnace, sealed by a cap and vacuumized; temperature rises until a pressure gage shows the pressure of 0.1 Mp, and a sealed valve is immediately opened to discharge volatile sulphur into alkaline liquid; when temperature rises to 250 DEG C, the pressure gage is observed; when pressure is lower than 0.1 Mp, a discharge duct reducing valve sets automatic control, and the furnace pipe of the resistance furnace is taken out after keeping warm for 6 hours; and the obtained product is naturally cooled to normal temperature. Compared with similar products produced with other methods, the product produced by the invention has high purity, basically has no oxidation, can effectively improve the cuttability of the product, and does not affect the comprehensive property of the product.
Description
technical field [0001] The invention relates to a production method of manganese sulfide, in particular to a new production process of manganese sulfide. Background technique [0002] At present, the known use of manganese sulfide is mainly added to raw materials such as iron powder, so that the produced parts are easy to cut. At present, the production method of this kind of product is mainly to adopt manganese ore or manganese compound, through adding a reducing agent or displacing agent, to carry out chemical reaction, the product produced is low in purity, and the use effect is poor. Stromo; J. Avidson for the preparation of manganese sulfide by heating granular or aggregated manganese sulfate to at least 700°C in the presence of at least one reducing agent, the The production process of this production method is complex, and the product it produces has low purity and high impurity content, which is unfavorable for the final performance of the product. Contents of the...
Claims
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IPC IPC(8): C01G45/00
Inventor 石勇朱轩段建鑫石萌暴新华
Owner 莱芜市金石粉末冶金有限公司