Manganese nitride production method

Abstract

The invention discloses a manganese nitride generation method based on ammonia nitrogen, which comprises the following steps: (1) optimizing the ammonia nitrogen rate with 25í½35úÑ ammonia and 75í½65úÑ nitrogen (30% ammonia and 70% nitrogen is the best); (2) charging material in the stove; (3) nitriding for the second time and filling argon gas; (4) sintering at high temperature without briquette modeling through adhesive in advance.

Description

technical field [0001] The present invention relates to the binary compound of nitrogen and metal, in particular to the preparation method of the alloy based on manganese nitride. Background technique [0002] The methods for preparing manganese nitride in the prior art all utilize the properties of metal manganese to absorb nitrogen at high temperatures; as the nitrogen source, there are currently 1, decomposing with a single ammonia, 2, using a single nitrogen as a nitrogen source, 3, using Ammonia nitrogen mixed as nitrogen source; in the actual production process, the manganese powder is first pressed into shape, and then put into the furnace for nitriding. The current production process has problems such as low nitrogen utilization rate, insufficient heat utilization, poor nitriding quality, instability, and high production cost. [0003] Chinese patent ZL00134349.1 "A treatment method for purifying manganese nitride alloy with ultra-low impurity content" discloses a m...

AI Technical Summary

Problems solved by technology

The current production process has problems such as low nitrogen utilization rate, insufficient heat utilization, poor nitriding quality, instability, and high production costs.

[0003] Chinese patent ZL00134349.1 "A treatment method for purifying manganese nitride alloy with ultra-low impurity content" discloses a metal manganese nitriding process, which has the disadvantages of complex process, long production cycle, low nitrogen utilization rate, and production Disadvantages such as high cost