Purifying and nitriding process for producing manganese alloy with very low impurity content

Abstract

A treatment method for purifying manganese nitride alloy with ultra-low impurity content. The steps are to desulfurize metal manganese, carbon, and phosphorus, so that the content of sulfur, carbon, and phosphorus in manganese is reduced to C<0.02, S<0.01, P<0.01; Crush the above manganese metal into particles smaller than Φ2 and place it in a stainless steel container; put it into an electric furnace, connect the stainless steel tubes on the stainless steel container to the pure nitrogen source and the water container respectively; fill with pure nitrogen, observe the flow of nitrogen, and give Power is supplied to the electric furnace, the temperature is raised to 450-1100°C, and the temperature is maintained for 20-200 hours; the electric furnace is powered off, and nitrogen gas is continued until the temperature of the stainless steel container cools down to room temperature. The invention has high nitrogen content and low impurity elements.

Description

technical field [0001] The invention relates to a manganese nitride alloy, in particular to a treatment method for purifying a manganese nitride alloy with ultra-low impurity content. Background technique [0002] According to the traditional method of producing manganese nitride, in the process of directly reducing metal manganese from ore in a nitrogen atmosphere, manganese nitride alloys are prepared by using the properties of metal manganese to absorb nitrogen at high temperatures, and the nitrogen content of manganese nitride alloys can be obtained by this method. Low, high impurity elements, currently the purest manganese nitride element (weight percent) content obtained from the market is: N>6.0, C<0.05, P<0.05, Si<1.0, S<0.05, the balance is Mn, therefore cannot meet the requirements of high-performance alloys with high nitrogen content. But there is no purified manganese nitride product with high nitrogen content and low impurity elements. Contents...

AI Technical Summary

Problems solved by technology

[0002] According to the traditional method of producing manganese nitride, in the process of directly reducing metal manganese from ore in a nitrogen atmosphere, manganese nitride alloys are prepared by using the properties of metal manganese to absorb nitrogen at high temperatures, and the nitrogen content of manganese nitride alloys can be obtained by this method. Low, high impurity elements, currently the purest manganese nitride element (weight percent) content obtained from the market is: N>6.0, C<0.05, P<0.05, Si<1.0, S<0.05, the balance is Mn, therefore cannot meet the requirements of high-performance alloys with high nitrogen content

However, there is no purified manganese nitride product with high nitrogen content and low impurity elements