Magnetizing roasting self-heating balancing device and method for iron ore tunnel kiln

A technology of self-heat balance and magnetization roasting, applied in the field of minerals and metallurgy, can solve the problems of high exhaust gas temperature, large heat loss of flue gas, high energy consumption of iron ore roasting, achieve optimal conditions, improve utilization rate, and reduce heat loss Effect

Inactive Publication Date: 2015-11-25
GANSU JIU STEEL GRP HONGXING IRON & STEEL CO LTD
View PDF6 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To sum up, the main problems of iron ore tunnel kiln magnetization roasting are as follows: (1) gas fuel is needed for heating in tunnel kiln; Larger, resulting in higher energy consumption for iron ore roasting

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
  • Magnetizing roasting self-heating balancing device and method for iron ore tunnel kiln

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] Such as figure 1 As shown, a self-heat balance device for iron ore tunnel kiln magnetization roasting is provided with a smoke exhaust machine 2 at the kiln entry end 1 of the tunnel kiln, and a storage tank is provided outside the heating and reduction zone 3 of the tunnel kiln. The thermal heat exchanger 4 and the two heat storage tanks in the heat storage heat exchanger 4 adopt a high temperature and corrosion resistant honeycomb structure. In the heat storage heat exchanger 4, the air and flue gas are stored in different The flow in the tank is carried out, and the heat is exchanged through periodic switching. The high-temperature flue gas inlet 5 of the regenerative heat exchanger 4 is connected with the exhaust port of the tunnel kiln heating reduction zone 3, and the flue gas of the regenerative heat exchanger 4 The gas outlet 6 ...

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 magnetizing roasting self-heating balancing device and method for an iron ore tunnel kiln. A heat-accumulating type heat exchanger is arranged outside a tunnel kiln heating reduction zone. A high-temperature smoke inlet of the heat-accumulating type heat exchanger is connected with a smoke exhaust port of the tunnel kiln heating reduction zone. A heating reduction zone smoke exhauster is arranged at a smoke outlet of the heat-accumulating type heat exchanger. An air blower is arranged at a cold air inlet of the heat-accumulating type heat exchanger. A hot air outlet of the heat-accumulating type heat exchanger is connected with a hot wind pass-in channel arranged on the side wall of the tunnel kiln heating reduction zone through a hot wind pipeline. According to the magnetizing roasting self-heating balancing device and method for the iron ore tunnel kiln, the ratio of the quantity of exhaust smoke exhausted out of a kiln feeding end to the quantity of exhaust smoke exhausted out of the heating reduction zone is adjusted, so that the smoke exhaust temperature at the kiln feeding end of the tunnel kiln and the heat loss due to the fact that heat is taken away by the smoke are reduced; in addition, material heating with coal as fuel is achieved when the tunnel kiln does not use externally supplied gas fuel, and the smoke exhaust temperature at the smoke outlet is reduced below 250 EDG C at the same time; the energy utilization rate is increased and unit cost of iron ore magnetizing roasting is reduced.

Description

technical field [0001] The invention belongs to the technical field of mineral and metallurgy, and in particular relates to a self-heat balance device and method for iron ore tunnel kiln magnetization roasting. Background technique [0002] In the iron ore tunnel kiln magnetization roasting process, the fuel used for tunnel kiln heating is generally gaseous fuel. When the tunnel kiln is used in an area where gas fuel is scarce, the gas supply problem is difficult to solve, which limits the iron ore tunnel kiln. Popularization and application of magnetization roasting. However, when the tunnel kiln uses producer gas as fuel, it generally needs to be equipped with a gas producer. The coal gasifier uses coal as the raw material, and converts the coal into producer gas through high-temperature cracking and gasification, and then supplies the producer gas to the tunnel kiln for utilization. Due to the secondary conversion of energy in the process of fuel use in tunnel kilns, th...

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): F27B9/40F27D17/00F27B9/30
Inventor 王明华权芳民雷鹏飞郭忆鲁逢霖李慧春付涛张科白江虎寇明月边立国
Owner GANSU JIU STEEL GRP HONGXING IRON & STEEL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap