Gas-based reduced iron shaft furnace

A technology for reducing iron and shaft furnaces, which is applied in shaft furnaces, furnaces, furnace types, etc., can solve the problems of a large number of supporting steel structure materials, materials and the friction of the inner wall of the furnace, high manufacturing and operating costs, and achieve production and operation. Ease of control, steel savings, low manufacturing and operating costs

Pending Publication Date: 2022-04-19
太原理工大成工程有限公司 +1
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical defects in the structure design of the gas-based shaft furnace in the prior art, the height of the feeding device and the height of the reduction section of the shaft furnace are longer, and the oxidized pellet material in the shaft furnace is heated and expanded, which increases the friction between the material and the inner wall of the furnace. Large, and the erection of the shaft furnace body requires a large amount of supporting steel structure materials, which makes the overall shaft furnace equipment manufacturing and operating costs high. The purpose of the present invention is to provide a new type of gas-based reduced iron shaft 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
  • Gas-based reduced iron shaft furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Aiming at the technical defects in the existing shaft furnace structure design, the present invention makes a new design from the aspects of material receiving mode, shaft furnace body, furnace body temperature measurement mode, material distribution mode and material discharge mode, and provides a new type of shaft furnace. Gas-based reduced iron shaft furnace.

[0022] The specific embodiment of the present invention will be further described below through specific examples.

[0023] Such as figure 1 As shown, the novel air-based reduced iron shaft furnace provided by the present invention is successively a material receiving device, a shaft furnace body and a discharging device from top to bottom, and the material receiving device consists of a material receiving bin 1, an upper sealed bin 2 and a The feeding pipe 4 is composed of an upper flapper valve 3 at the outlet of the upper sealed chamber 2; the discharge device is composed of a discharge pipe 14, a lower se...

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 relates to a gas-based reduced iron shaft furnace which sequentially comprises a receiving device, a shaft furnace body and a discharging device from top to bottom. A main reaction area of the shaft furnace body is of a circular truncated cone structure, a thermal reduction gas inlet is located in the lower section of the reaction area, two sets of temperature measuring devices are arranged at different heights of the reaction area of the shaft furnace body, the other set of temperature measuring devices are arranged above the thermal reduction gas inlet, and a material receiving bell is arranged on the inner side of the top of the shaft furnace body. The top of the shaft furnace body is provided with an ascending pipe for recycling furnace top circulating gas, and a lower cooling area of the shaft furnace body is provided with a discharging and guiding device. The shaft furnace is simple in structure and small in size, production of the shaft furnace is easier to control, and the overall shaft furnace equipment manufacturing and operating cost is low.

Description

technical field [0001] The invention belongs to the technical field of metallurgical equipment, and in particular relates to a novel gas-based reduced iron shaft furnace. Background technique [0002] At present, gas-based shaft furnace direct reduced iron technology (sponge iron or DRI) has been maturely applied abroad as the main non-blast furnace ironmaking technology. It is an important production technology for improving the structure of iron and steel products, improving the quality of iron and steel products, and realizing clean smelting. It is also an important production technology for the sustainable development of the iron and steel industry, energy saving and emission reduction, and environmentally friendly development mainstream direction. [0003] my country is a big steel producer. In 2019, my country's crude steel output reached 996 million tons, accounting for about 53% of the global total. However, my country's steelmaking process is basically based on 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
IPC IPC(8): C21B13/02
CPCC21B13/02C21B13/0073Y02P10/143
Inventor 薛钟安尉明梁言石玉良杨力张永发周晋华
Owner 太原理工大成工程有限公司
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