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

A technology of manganese nitride alloy and impurity content, which is applied in the direction of nitrogen-metal/silicon/boron binary compounds, etc., can solve the problems of no nitrogen content, low impurity elements, high impurity elements, etc., and the method is simple and easy to achieve, impurity elements The effect of low and high nitrogen content

Inactive Publication Date: 2003-10-01
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The specific operation steps are as follows:

[0018] 1. First, the electrolytic manganese metal is desulfurized, decarburized and dephosphorized in a vacuum induction furnace to reduce the content of sulfur, carbon and phosphorus in manganese to C<0.02, S<0.01, P<0.01, and the balance is Mn;

[0019] 2. Break the above-mentioned electrolytic manganese metal into particles smaller than Φ2, and then put the manganese particles in a closed stainless steel box. There are two stainless steel tubes in this stainless steel, which are used as nitrogen gas for preparing manganese nitride And the passage of nitrogen;

[0020] 3. Put the closed stainless steel box containing electrolytic manganese metal particles into the muffle furnace, fill the stainless steel box with pure nitrogen through one of the stainless steel tubes, and place the head of the other stainless steel tube into a water tank In the box, in order to visually observe the flow of nitrogen gas when nitrogen gas ...

Embodiment 2

[0027] The specific operation steps are as follows:

[0028] 1. First, the manganese metal is desulfurized, decarburized and dephosphorized in a vacuum induction furnace to reduce the content of sulfur, carbon and phosphorus in manganese to C<0.02, S<0.01, P<0.01, and the balance is Mn;

[0029] 2. Break the above-mentioned manganese metal into particles smaller than Φ2, and then put the manganese particles in a closed stainless steel box. There are two stainless steel tubes in the stainless steel, which are used as the nitrogen and nitrogen for the preparation of manganese nitride. The passage of nitrogen gas;

[0030] 3. Put the closed stainless steel box containing metal manganese particles into the muffle furnace, fill the stainless steel box with pure nitrogen through one of the stainless steel tubes, and place the head of the other stainless steel tube into a box filled with water In order to visually observe the flow of nitrogen when nitrogen is passed;

[0031] 4. Af...

Embodiment 3

[0038] The difference from Example 1 is that the muffle furnace is heated to raise the temperature, the temperature is controlled at 450° C., and the temperature is kept for 20 hours.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

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...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C01B21/06C22C1/00C22C29/16
Inventor 董加胜缪汝洪马禄铭戎利建李依依杨柯
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap