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

Magnetite microwave heating agglomerating method and its microwave agglomerating furnace

A technology of microwave heating and sintering method, which is applied in lighting and heating equipment, furnaces, muffle furnaces, etc., can solve application problems and achieve the effects of resource saving, reasonable design, good air permeability and strength

Inactive Publication Date: 2007-04-18
CHONGQING UNIV
View PDF3 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when magnetite is directly microwave-heated, whether there is a sintering liquid phase during the sintering process and whether the sintered product has the strength to meet the blast furnace smelting is currently a blank. Microwave sintering technology has not yet been used in magnetite sintering in the iron and steel industry. middle application

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
  • Magnetite microwave heating agglomerating method and its microwave agglomerating furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] A microwave heating and sintering method for magnetite, comprising the steps of:

[0016] 1) According to a batch of concentrate powder used in conventional sintering of iron and steel enterprises, analyze the content of its active ingredients, especially understand SiO 2 , the weight ratio of CaO;

[0017] 2) To make it satisfy SiO 2 : CaO (weight ratio)=1: 2~4, calculate the weight that needs to add CaO in magnetite;

[0018] 3) Add the above-mentioned calculated amount of CaO to the concentrate powder that needs to be sintered, and the particle size of CaO is ≤ 3mm, and mix it evenly;

[0019] 4) Put the homogeneously mixed mixture of magnetite and CaO into a microwave sintering furnace, and microwave sintering at 1100°C to 1300°C for 15 to 30 minutes to obtain a sintered product with good air permeability and hardness.

[0020] Referring to Fig. 1 : a microwave magnetite carbon-free microwave sintering furnace for realizing the above method, including a microwave...

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 offers a sintering method and sintering furnace for microwave heating of magnetite. The sintering method is consist of the follows: a) Ca0 is added into magnetite with a weight proportion of SiO2:CaO=1:2-4 and is mixed uniformly. Particle size of CaO is <=3mm. Magnetite is refined breeze for routine sintering of iron and steel industries. B) The well-proportioned mixture of magnetite and Ca0 is sintered for 15 to 30 minutes in microwave sintering furnace under 1100deg.C-1300deg.C. Microwave is taken as heat source in place of coal to sinter magnetite, which not only is unable to pollute environment and can save resources, but also is fast, efficient, energy saving and completely meets the needs of blast furnace casting. Simple structure and proper design of the sintering furnace can realize sintering without charcoal for microwave magnetite and continuous sintering.

Description

technical field [0001] The invention relates to a magnetite sintering process and device in the technical field of blast furnace ironmaking, in particular to a method for carbon-free sintering of magnetite by using microwaves and a microwave sintering furnace. Background technique [0002] Magnetite contains vanadium-titanium magnetite, etc., and is the basic raw material for blast furnace smelting pig iron. Usually, it needs to be crushed and separated into concentrate powder, which is then sintered into blocks and then smelted into pig iron. In the prior art, sintering magnetite usually uses a large amount of charcoal as fuel, which not only causes great pollution to the environment, but also has long sintering cycle, high energy consumption, low thermal efficiency, and the need to consume non-renewable coal resources, etc. question. Microwave sintering technology mainly uses the coupling of microwave energy and materials, and the internal friction generated by the dielec...

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): C22B1/22F27B5/00F27B5/18
Inventor 白晨光邱贵宝温良英任伟夏锋吕学伟
Owner CHONGQING UNIV
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