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

Blast furnace ironmaking method

A blast furnace ironmaking and blast furnace technology, applied in blast furnaces, blast furnace details, furnaces, etc., can solve the problems of low blast furnace smelting intensity and low blast furnace utilization rate, and achieve the effect of improving blast furnace utilization rate

Inactive Publication Date: 2012-10-17
PANGANG GROUP VANADIUM TITANIUM & RESOURCES +3
View PDF3 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a new blast furnace ironmaking method in order to overcome the disadvantages of the existing blast furnace ironmaking method, such as the low utilization rate of the blast furnace and the low smelting intensity of the blast furnace

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
  • Blast furnace ironmaking method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0013] In the preparation process of sinter, based on the total weight of iron concentrate, rich ore powder, solid fuel and flux, the amount of iron concentrate can be 40-50% by weight, and the amount of rich ore powder can be 30-40% by weight , the total amount of solid fuel and flux can be 10-25% by weight. The weight ratio of the solid fuel and flux can be 1:2-3.

[0014] In the present invention, the iron ore concentrate is iron ore powder with high iron grade obtained by finely grinding and concentrating lean iron ore. According to different iron-containing minerals, iron concentrates are divided into magnetite concentrates, hematite concentrates and limonite concentrates; according to different beneficiation methods, they are divided into weak magnetic concentrates, strong magnetic concentrates, flotation concentrates and Gravity concentrate. The iron grade of iron concentrate is higher, generally above 54%. Since the blast furnace ironmaking method provided by the pr...

Embodiment 1-9

[0033] These examples are used to illustrate the method for blast furnace ironmaking provided by the present invention.

[0034] Combine sinter, pellets and fluorite (CaF 2 content of about 75% by weight) into the blast furnace for smelting, wherein, the amount of sinter, pellets and fluorite, the corresponding smelting parameters and the utilization coefficient of the blast furnace (indicating the utilization rate of the blast furnace) and smelting intensity are shown in Table 1 shown.

[0035] The utilization coefficient and smelting intensity of the blast furnace are calculated according to the following formulas:

[0036] The utilization factor of the blast furnace = the daily output of the blast furnace / the volume of the blast furnace

[0037] Smelting intensity = the amount of coke consumed by the blast furnace per day / the volume of the blast furnace

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

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a blast furnace ironmaking method. The method includes adding ironmaking raw materials to a blast furnace for smelting; and the ironmaking raw materials contain sinter and pellet, which account for more than 98% of a total weight of the ironmaking raw materials. Melting conditions include: hot-blast temperature in the blast furnace at 1200-1300 DEG C, and oxygen enrichment rate of 4-10% by volume. The blast furnace iron-making method of the present invention can effectively improve the utilization ratio and smelting intensity of the blast furnace.

Description

technical field [0001] The invention relates to a method for blast furnace ironmaking. Background technique [0002] The main method of smelting vanadium-titanium magnetite is to sinter vanadium-titanium-iron concentrate and ordinary fine ore to produce sintered ore, and vanadium-titanium-iron concentrate to produce oxide pellets, and then sinter, pellets and a small amount of Lump ore is added into the blast furnace together with coke according to a certain proportion, and the lower part is blown to burn the coke to generate reducing gas. Separation of slag and iron. [0003] In the existing smelting process of high-titanium vanadium-titanium magnetite, its slag TiO 2 The content is as high as 22-25% by weight, and 5-10% by weight of ordinary iron ore needs to be added in the smelting process. Compared with sintered ore and pellet ore, ordinary iron ore has poor reducibility, which can increase the hearth Oxygen potential, which inhibits slag TiO 2 Over-reduction and im...

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): C21B5/00C22B1/14
Inventor 付卫国文永才饶家庭宋剑
Owner PANGANG GROUP VANADIUM TITANIUM & RESOURCES
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