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

Micron-sized ultrafine iron powder preparation method

An ultra-fine iron powder and micron-level technology, which is applied in the field of preparation of micron-level ultra-fine iron powder, can solve the problems of preparing micron-level ultra-fine iron powder, etc., and achieves fast reduction speed, improved pulverization effect and high reduction rate. Effect

Inactive Publication Date: 2015-04-08
上海寰保渣业处置有限公司 +1
View PDF5 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Due to the continuous expansion of the application field and application volume of ultra-fine iron powder, the demand for ultra-fine iron powder is increasing year by year, and the traditional iron powder production process is difficult to produce micron-sized ultra-fine iron powder, so the development of ultra-fine iron powder technology has become a top priority

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Micron-sized ultrafine iron powder preparation method
  • Micron-sized ultrafine iron powder preparation method
  • Micron-sized ultrafine iron powder preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0021] The preparation process and steps of ultrafine iron powder in the present embodiment are as follows:

[0022] (1) Use the iron oxide scale powder separated from the iron surface layer of the incinerated garbage as raw material, after cleaning and magnetic separation (see Table 1 for its composition), add graphite at 0.5-1 (wt)% of the weight of the iron oxide scale powder, and another Add an appropriate amount of zinc stearate, carry out ball milling in a high-energy ball mill, and grind and pulverize to micronano iron oxide powder; graphite can be used as a reducing agent for iron oxide, and zinc stearate can be used as a process control agent; The oxygen content of the raw material powder is used as the measurement basis; the high-energy ball mill is a planetary ball mill; the ball milling process conditions are: the ball-to-material ratio is 4:1, the ball milling speed is 500 r / min, and the ball milling time is 8-24 hours. After ball milling, the powder was sieved to...

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 micron-sized ultrafine iron powder preparation method and belongs to the technical field of preparation processes of metallic micron-sized ultrafine powder. The preparation method mainly includes: (1) taking scale oxide separated from the surface layer of incineration waste iron as a raw material, adding a certain amount of graphite reducing agent and appropriate zinc stearate as process control agents, and fully grinding and crushing the materials in a planetary ball mill, with the ball-milling process parameters being 3-5:1 in ball material ratio, 300-500r / min in ball-milling speed, 8-24h in ball-grinding time, so as to obtain iron oxide powder with the particle size being 32-1.2 microns; (2) after sieving of the iron oxide powder, heating the iron oxide powder in a tubular heating furnace, and feeding mixed gas of hydrogen and nitrogen in the volume ratio of 1:4 with the gas flow of 200-300ml / min prior to reduction at the temperature of 300-500 DEG C for 10-30 minutes so as to obtain iron powder with the particle size being 1 micron finally.

Description

technical field [0001] The invention relates to a preparation method of micron-scale ultrafine iron powder, which belongs to the technical field of preparation technology of metal micron-scale ultrafine powder. Background technique [0002] There is a large amount of iron in the incineration of urban waste, and this part of iron has been severely oxidized. According to analysis, the oxide layer accounts for about 40% of the total. Discarding it will cause waste of resources and environmental pollution. For example, making this part of iron oxide into iron Powder will have great economic and social benefits. Due to its unique electrical, magnetic, optical and chemical properties, ultra-fine iron powder has a wide range of uses. In recent years, it has been applied in the following fields and achieved good economic effects. [0003] 1) Drug carrier Combining nanotechnology and advanced biotechnology, using ultrafine iron powder as a carrier, the drug can be guided to the lesi...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/22
Inventor 王兴庆谭斌谈定生季善鹏毛协民
Owner 上海寰保渣业处置有限公司
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