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

Smelting method and smelting device for iron-based ores

A mineral and iron-based technology, applied in the direction of reducing gas emissions, which can solve the problems of low energy consumption, short process, and inability to take into account high iron recovery rates.

Active Publication Date: 2020-11-13
CHINA ENFI ENGINEERING CORPORATION
View PDF17 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The main purpose of the present invention is to provide a smelting method and smelting device for iron-based minerals to solve the comprehensive effects of high iron recovery rate, high efficiency, short process, and low energy consumption in the prior art when processing iron-based ores. The problem

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
  • Smelting method and smelting device for iron-based ores
  • Smelting method and smelting device for iron-based ores
  • Smelting method and smelting device for iron-based ores

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] Using vanadium titanomagnetite as raw material, the composition is shown in the following table (TFe represents the total iron content in the material), in wt%:

[0098]

[0099] use figure 1 The jet smelting unit-electrothermal reduction unit integrated equipment shown, the jet smelting area is provided with an upper-layer spray gun and a lower-layer spray gun, the height of the slag layer of the jet smelting in the jet smelting area is denoted as H, and the distance between the nozzle of the upper spray gun and the surface of the slag layer is denoted as H. The distance is denoted as h 1 , the distance between the nozzle of the lower spray gun and the surface of the slag layer is recorded as h 2 , where h 1 / H is 1 / 4, h 2 / H is 3 / 4.

[0100] The massive vanadium titanomagnetite and quicklime are put into the jet smelting area through the belt conveyor, and 15.80kg quicklime is added to each ton of vanadium titanite. The material enters the jet smelting area to ...

Embodiment 2

[0106] Using vanadium titanomagnetite as raw material, the composition is shown in the following table:

[0107]

[0108] use figure 1 In the shown integrated equipment of jet melting unit and electrothermal reduction unit, the height of the slag layer of jet melting in the jet melting zone is denoted as H, and the distance from the nozzle of the upper spray gun to the surface of the slag layer is denoted as h 1 , the distance between the nozzle of the lower spray gun and the surface of the slag layer is recorded as h 2 , where h 1 / H is 1 / 4, h 2 / H is 3 / 4.

[0109] The massive vanadium titanomagnetite is put into the jet molten pool through the belt conveyor, and the material enters the jet melting zone for melting and reduction. The temperature of the molten pool in the jet melting zone is about 1650℃.

[0110] Oxygen and natural gas are injected into the upper spray gun in the upper part of the jet smelting area, and 126Nm of oxygen needs to be injected per ton of va...

Embodiment 3

[0115] Using sea sand ore as raw material, the composition is shown in the following table:

[0116]

[0117] use figure 2 The shown jet smelting unit-electrothermal reduction unit is a separate equipment, the jet smelting area is provided with an upper-layer spray gun and a lower-layer spray gun, the height of the slag layer of the jet smelting in the jet smelting area is denoted as H, and the distance between the nozzle of the upper spray gun and the surface of the slag layer is denoted as H. The distance is denoted as h 1 , the distance between the nozzle of the lower spray gun and the surface of the slag layer is recorded as h 2 , where h 1 / H is 1 / 4, h 2 / H is 3 / 4.

[0118] The sea sand ore and quicklime are mixed according to the ratio of 1000:32. After mixing, the material is put into the jet molten pool through the belt conveyor, and the material enters the jet melting zone for melting and reduction. The temperature of the molten pool in the jet melting zone is...

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 provides a smelting method and a smelting device for iron-based ores. The method comprises the following steps of directly adding iron-based minerals, a first flux and a second reducingagent into a furnace, blowing a first oxygen-enriched gas and a first fuel to a jet smelting area by using an upper-layer spray gun, blowing a second oxygen-enriched gas, a second fuel and a first reducing agent to the jet smelting area by using a lower-layer spray gun, and smelting to obtain a melt containing smelting slag and metal; or adding the iron-based mineral and the first flux into the furnace, and blowing the first oxygen-enriched gas and the first fuel into the jet smelting area by using a first spray gun for smelting to obtain a melt; blowing the second oxygen-enriched gas, the second fuel and the first reducing agent into a jet smelting primary reduction area by using a second spray gun, adding the second reducing agent, introducing the molten material, and carrying out jet smelting primary reduction to obtain a melt containing smelting slag and metal; and introducing the melt into an electric heating reduction area for reduction and separation, and obtaining metal and smelting slag. By means of the method, iron in the iron-based ore is fully recycled, and iron vanadium and titanium are efficiently separated.

Description

technical field [0001] The invention relates to the technical field of iron ore smelting, in particular to a smelting method and a smelting device for iron-based minerals. Background technique [0002] Vanadium and titanium are important strategic metals and are widely used in aerospace, navigation, batteries, medical and other fields. Many iron-based minerals, such as vanadium-titanium magnetite, sea sand ore, ilmenite, etc., are also accompanied by relatively high contents of vanadium and titanium. These iron-based minerals are important sources of vanadium and titanium resources in the future. Utilization will be the direction of industrial development. [0003] In my country, the treatment of vanadium titanomagnetite, sea sand ore and other iron-based minerals is mainly based on the blast furnace process, but this process can only recover iron and vanadium, and the blast furnace method to treat vanadium titanomagnetite, sea sand ore, and ilmenite requires a blast furnac...

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): C21B11/00C21B11/10C22B34/22C22B34/12C22B5/10
CPCC21B11/00C21B11/10C22B34/22C22B34/1227C22B5/10Y02P10/143
Inventor 李东波黎敏徐小锋曹珂菲郭亚光高永亮王云陆志方刘诚魏甲明陈宋璇陈学刚苟海鹏冯双杰崔大韡余跃尉克俭陆金忠茹洪顺李兵张海鑫
Owner CHINA ENFI ENGINEERING CORPORATION
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