Pulverizing system with external feeding function and blast furnace blowing system

A technology of pulverizing system and feeding system, applied in blast furnace, blast furnace details, blast furnace parts, etc., can solve problems such as poor grinding effect, corrosion damage, and reducing the grindability of raw coal

Pending Publication Date: 2017-12-12
姜本熹 +2
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such operation has the following problems: 1. There are many fine powders that do not need to be milled in the recovered powder. Repeated grinding in the coal mill not only wastes electricity, but the fine powder itself reduces the raw coal that needs to be milled 2. In order to prevent dust, it is necessa

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
  • Pulverizing system with external feeding function and blast furnace blowing system
  • Pulverizing system with external feeding function and blast furnace blowing system
  • Pulverizing system with external feeding function and blast furnace blowing system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] figure 1 It is a schematic structural diagram of a pulverizing system 100 with external feeding function in Embodiment 1 of the present invention. Please refer to figure 1 , the present embodiment provides a pulverizing system 100 with an external feeding function, which includes a pulverized coal preparation system 110 and an external feeding system 120, and the external feeding system 120 communicates with the pulverized coal preparation system 110 through a pipeline to CDQ coke powder, dedusting powder or other auxiliary material powders are sent to the pulverized coal preparation system 110 to complete the preparation and storage, which is convenient for blast furnace coal injection.

[0038] The pulverized coal preparation system 110 includes a raw coal bunker 111 , a coal mill 112 , a pulverized coal bunker 115 and a filtering device 113 . In this embodiment, the raw coal bunker 111, the coal mill 112, the filtering device 113, and the pulverized coal bunker 115...

Embodiment 2

[0052] Figure 4 It is a schematic structural diagram of a pulverizing system 300 with external feeding function in Embodiment 2 of the present invention. Please combine figure 1 and Figure 4 , this embodiment provides a pulverizing system 300 with an external feeding function, which is roughly the same in structure as the pulverizing system 100 of the first embodiment, the difference between the two is that the mechanism of the external feeding system 320 in this embodiment is different. different.

[0053] The external feeding system 320 only includes the cyclone dust collector 140 and the coal storage bin 142 connected to the powder outlet of the cyclone dust collector 140 , without the classification device 130 . The inlet of the cyclone dust collector 140 is connected to the outlet of the pneumatic conveying device 150 through a pipeline, and the exhaust gas outlet of the cyclone dust collector 140 is connected to the pipeline at the inlet of the filter device 113 thr...

Embodiment 3

[0057] Figure 5 It is a schematic structural diagram of the milling system 400 in Embodiment 3 of the present invention. Please combine figure 1 and Figure 5 , this embodiment provides a pulverizing system 400 with an external feeding function, which has roughly the same structure as the pulverizing system 100 in Embodiment 1, the difference between the two is that the mechanism of the external feeding system 420 in this embodiment is different .

[0058] In this embodiment, the external feeding system 420 only includes the classification device 130 and does not include the cyclone dust collector 140 (see figure 1 ), the inlet of the classification device 130 is communicated with the outlet of the pneumatic conveying device 150, the coarse powder outlet of the classification device 130 is communicated with the raw coal bunker 111 through the powder feeding pipeline 132, and the fine powder outlet of the classification device 130 is communicated with the pipeline at the fi...

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 the field of metallurgy, and discloses a pulverizing system with an external feeding function and a blast furnace blowing system. The pulverizing system comprises a pulverized coal manufacturing system, and an external supplying system for adding powder and particle materials from the outside into the pulverized coal manufacturing system. Gas which is separated from separation equipment of the external supplying system and contains a small amount of dust is exhausted after the dust is filtered through a filter device. The separation equipment directly conveys separated powder materials meeting blowing requirements into a pipeline or equipment on the downstream portion of a coal mill, and the powder materials are not ground repeatedly through the coal mill. In this way, the coal mill does not grind fine powder meeting the blowing requirements, energy consumption is reduced, and the grinding efficiency is improved. The external supplying system is further provided with a heating device, and the externally added materials are heated, so that the situations that the externally added materials are caked, and the liquidity is reduced are avoided. In addition, the externally supplying system adopts a sealed pneumatic conveying mode, water spraying dust suppression treatment is not needed, procedures are simplified, and equipment corrosion is relieved. The blast furnace blowing system comprises the pulverizing system and a coal powder injection tank.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a pulverizing system and a blast furnace injection system with the function of adding external materials. Background technique [0002] The blast furnace injection system generally includes two major systems: coal powder preparation and coal powder injection. Raw coal is transported by belt conveyor in the coal yard to the raw coal bunker in the pulverizing room, falls into the weighing coal feeder through the outlet at the bottom of the raw coal bunker, and then falls into the coal mill for grinding. Take it out of the mill, and separate the powder gas into the powder bin in the bag powder collector for injection. [0003] In metallurgical production, it is sometimes necessary to add other materials such as coke powder recovered during coking and ironmaking production and transportation or raw coal dedusting powder into the blast furnace, or to add additives to the pulverized coal to ...

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): C21B5/00C21B7/00
CPCC21B5/003C21B7/00
Inventor 姜本熹刘琼英
Owner 姜本熹
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