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

Flux pellet produced by adding fluorine-contained magnetite concentrate and preparation method of flux pellet

A magnetite concentrate and flux-based technology, applied in the field of iron-making raw material pellets, can solve the problems of low SiO2 and other problems, and achieve the effects of improving metallurgical properties, suppressing reduction expansion rate, and rational allocation

Active Publication Date: 2019-03-19
内蒙古包钢还原铁有限责任公司
View PDF6 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The data survey results show that no iron ore with the same level of low SiO2 content and high CaO and MgO content has been found in China, including Shougang and Chongqing Iron and Steel Group. Above 4%

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
  • Flux pellet produced by adding fluorine-contained magnetite concentrate and preparation method of flux pellet
  • Flux pellet produced by adding fluorine-contained magnetite concentrate and preparation method of flux pellet
  • Flux pellet produced by adding fluorine-contained magnetite concentrate and preparation method of flux pellet

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] Such as figure 1 Shown, a kind of preparation method of adding the flux property pellet produced by adding fluorine-containing magnetite concentrate comprises the following steps:

[0033] S1. Pellet the mixture in a Φ6m pelletizing tray to obtain raw pellets, and then spread the raw pellets evenly on the grate through the raw pellet distributing device and screening device. The thickness of the raw pellets of the chain grate is 190mm-200mm. The speed of the grate machine is 1.95m / min~2.05m / min;

[0034] S2. Dry the raw balls through the blast drying section of the chain grate machine and the exhaust drying section. The conditions of the blast drying section: the temperature of the air box in the blast drying section is controlled at 230 ° C ~ 250 ° C, and the pressure of the air box in the blast drying section is controlled. At 0.10kpa ~ 0.15kpa, the temperature of the hood in the air blast drying section is controlled at 50°C ~ 60°C, and the time is 2.90min ~ 3.10min...

Embodiment

[0042] In each embodiment, the production of low-silicon, high-magnesium and fluorine-containing flux pellets by using the grate machine-rotary kiln-circular cooler process, the raw material composition, raw material configuration, process parameters, finished ball composition, and related properties of the finished ball are shown in Table 1. -7.

[0043] Each embodiment raw material chemical composition of table 1 and particle size statistics

[0044]

[0045]

[0046] It can be seen from Table 1 that:

[0047] The variety of iron materials used in each embodiment is relatively single, the particle size is fine, and the composition stability is good, which is conducive to improving the pelletizing process.

[0048] Raw material ratio statistics of each embodiment of table 2

[0049]

[0050] Table 3 statistics of green ball quality data in each embodiment

[0051]

[0052] It can be seen from Table 3:

[0053] (1) During the implementation of the project, the ...

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 discloses a flux pellet produced by adding fluorine-contained magnetite concentrate and a preparation method of the flux pellet, and relates to the flux pellet produced by using the fluorine-contained magnetite concentrate for a chain grate-rotary kiln-annular cooler process and a process control method of the flux pellet. According to the flux pellet produced by adding the fluorine-contained magnetite concentrate and the preparation method of the flux pellet, a system of drying, preheating, roasting and cooling of the flux pellet produced by using the fluorine-contained magnetite concentrate is determined, wherein the system is suitable for the chain grate-rotary kiln-annular cooler process, and the compressive strength, the drum strength and metallurgical performance of theproduced pellet can all meet the demands of a blast furnace.

Description

technical field [0001] The invention belongs to the iron-making raw material pelletizing technology, and particularly relates to a flux-based pellet produced by adding fluorine-containing magnetite concentrate and a preparation method thereof, mainly through a chain grate-rotary kiln-circular cooler Process for producing high-magnesium, low-silicon and fluorine-containing flux pellets and its process. Background technique [0002] Among the two main methods of preparing iron-making furnace charge, sintering and pelletizing, the most significant advantages of the pelletizing method are low energy consumption, low pollution, and high-grade iron in the product, and the energy consumption of the oxidation pelleting process is only the energy consumption of the sintering process. half of. Due to these advantages of pellets, developed countries vigorously developed the production of pellets very early on, and the proportion of pellets in ironmaking furnace materials has gradually...

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): C22B1/02C22B1/24C22B1/26
CPCC22B1/02C22B1/2406C22B1/26
Inventor 邬虎林赵殿清边美柱付国伟白晓光吕志义张永
Owner 内蒙古包钢还原铁有限责任公司
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