Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing manganic manganous oxide

A technology of manganese tetroxide, heating and oxidation, applied in the direction of manganese oxide/hydroxide, etc., can solve the problems of loss, easy to raise ash manganese compounds, etc.

Inactive Publication Date: 2008-05-14
李宏亮
View PDF0 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to improve the roasting process of manganese carbonate to prepare manganese tetraoxide, and to solve the problem that manganese carbonate rapidly releases a large amount of carbon dioxide at high temperature and is easy to fly ash and cause a large amount of manganese compound loss.

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

[0010] Add alkali metal carbonate (hydrogen) or ammonium (hydrogen) carbonate to the manganese sulfate solution, and the obtained manganese carbonate is oxidized by air at 300°C for 10 hours to obtain a manganese mixture product. The manganese mixture was calcined at 900°C for 10 minutes to obtain trimanganese tetraoxide.

Embodiment 2

[0012] Add alkali metal carbonate (hydrogen) or ammonium (hydrogen) carbonate to the manganese sulfate solution, and the obtained manganese carbonate is oxidized by air at 380°C for 5 hours to obtain a mixture product of manganese. The manganese mixture was calcined at 980°C for 1 minute to obtain trimanganese tetraoxide.

Embodiment 3

[0014] Add alkali metal carbonate (hydrogen) or ammonium (hydrogen) carbonate to the manganese sulfate solution, and the obtained manganese carbonate is oxidized by air at 450°C for 7 hours to obtain a mixture product of manganese. The manganese mixture was calcined at 1100°C for 60 minutes to obtain trimanganese tetraoxide.

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

The invention relates to a preparation method of mangano-manganic oxide, belonging to the technical field of inorganic non-metallic material, wherein the purified manganese ore extract, manganese sulfate solution, is used as raw material; carbonate (bicarbonate) is used as precipitating agent; the manganese ion in the manganese sulfate solution is precipitated into manganese carbonate sediment, which is then thermal oxidized and decomposed into a manganese admixture containing manganese dioxide, manganese monoxide and manganese carbonate with air or oxygen at a temperature of 120 DEG C to 800 DEG C, and then calcined into mangano-manganic oxide at a temperature of 800 DEG C to 1200 DEG C. The invention has the advantages that the dust cloud of manganese admixture is practically avoided during the process of preparation; the recovery rate of manganese is high; the obtained mangano-manganic oxide has dramatic activity and the cost is low.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic materials, in particular to a method for preparing trimanganese tetraoxide from a mixture of manganese obtained through special thermal decomposition of manganese carbonate. Background technique [0002] Trimanganese tetraoxide (Mn 3 o 4 ) is one of the main raw materials for the preparation of soft magnetic manganese zinc ferrite, other raw materials are Fe 2 o 3 and ZnO. [0003] Manganese-zinc ferrite is a high-performance magnetic material, widely used in high-tech industries such as electrical appliances, communications, and information, for air defense missile systems, variable polarization phased array radar antennas, early warning aircraft antennas, and solid-state phased arrays Components, single-pulse precision tracking and measurement radar and other military products. Used in the manufacture of various magnetic cores, information storage materials, magnetic heads, etc. The p...

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): C01G45/02
Inventor 邹兴
Owner 李宏亮
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com