CN102888472A - Method for enhancing grade of vertical mill return iron powder - Google Patents
Method for enhancing grade of vertical mill return iron powder Download PDFInfo
- Publication number
- CN102888472A CN102888472A CN2012103862519A CN201210386251A CN102888472A CN 102888472 A CN102888472 A CN 102888472A CN 2012103862519 A CN2012103862519 A CN 2012103862519A CN 201210386251 A CN201210386251 A CN 201210386251A CN 102888472 A CN102888472 A CN 102888472A
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- CN
- China
- Prior art keywords
- dust
- iron powder
- iron
- pipeline
- dust collection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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- Separation Of Particles Using Liquids (AREA)
Abstract
The invention relates to a method for enhancing grade of vertical mill return iron powder, which comprises the following steps: (1) making a hole in a dust collection main pipeline of a dust collector, welding a dust collection branched pipeline of which the length is 4m and the internal diameter is 219mm, and mounting a control valve on the dust collection branched pipeline; (2) making a hole in the position which is 2.5m away from the deslagging port on an iron powder flow pipeline of the dust collector, and welding a dust collection branched pipeline; and (3) connecting a circulating water pipe of the dust collector to the top of an iron powder bin, and mounting a water mist sprayer and a control valve. The invention can effectively separate iron and dust, thereby enhancing the iron grade in the iron powder. The method capable of effectively reducing flying dust generated in the iron powder blanking process saves the cost, prevents the field flying dust, and lowers the hazard of occupational disease for workers.
Description
Technical field
The invention belongs to blast-furnace slag and reclaim the field, be specifically related to a kind of method that improves the taste of Vertical Mill feed back iron powder.
Background technology
In the blast-furnace slag course of processing, the Vertical Mill material return system is subjected to the impact that the blast-furnace slag abrasive property is poor, water content is large in iron powder separator assorting room, easily occur abrasive grit, dust can not effective separation and iron powder airborne dust in the blanking process cause the phenomenon of environmental pollution.Affect on the one hand the iron powder taste and make dust content increase in the iron powder, caused on the other hand environmental pollution, the on-the-spot worker of what is more important sucks the generation that this type of dust very easily causes the occupational illness such as silicosis.
Summary of the invention
The present invention aims to provide and makes iron and dust obtain effective separation, thereby improve the method for Vertical Mill feed back iron powder ferrous grade, effectively reduce the airborne dust that iron powder produces in the blanking process, reach and save cost and stop on-the-spot airborne dust, reduced the harm of occupational illness to the post workman.
Technical scheme of the present invention comprises the steps:
1, perforate on the main pipe line that gathers dust of dust-precipitator is the subtube and by-pass valve control is installed at the subtube that gathers dust of gathering dust of 219mm at the long 4m internal diameter of hole welding;
2, on the iron powder stream pipeline of dust-precipitator and apart from the position perforate of slag-drip opening 2.5m, weld the subtube that gathers dust;
3, the circulating pipe with dust-precipitator is connected to top, iron powder storehouse and water mist sprinkling device and control valve is installed.
Described dust-precipitator is the blast-furnace slag recovery system of existing steel-making enterprise.
Effective Raise of the present invention the taste of Vertical Mill feed back iron powder iron, iron level brings up to 94.5% by original 76.37% has increased by 17.63%, iron-holder is at the iron powder more than 90%, according to the market reference price in 1800 per ton/units, iron-holder is 1500 per ton/units in the iron powder market value below 80%, increase benefit per ton is 300 per ton/units, and according to 9 tons * 300 yuan * 30 days * 12 months=97.2 ten thousand yuan of daily output pig iron powders, economic benefit is considerable.
The present invention has thoroughly solved on-the-spot airborne dust and problem of environmental pollution, and Inhalable Particulate PM2.5 value significantly reduces, and the worker is reduced because of the probability that occupational illness easily occurs in environmental pollution.
Embodiment
1, perforate on the main pipe line that gathers dust of dust-precipitator is the subtube and by-pass valve control is installed at the subtube that gathers dust of gathering dust of 219mm at the long 4m internal diameter of hole welding;
2, on the iron powder stream pipeline of dust-precipitator and apart from the position perforate of slag-drip opening 2.5m, weld the subtube that gathers dust;
3, the circulating pipe with dust-precipitator is connected to top, iron powder storehouse and water mist sprinkling device and control valve is installed.
Claims (1)
1. a method that improves the iron powder taste comprises the steps:
(1), perforate on the main pipe line that gathers dust of dust-precipitator, be the subtube and by-pass valve control is installed at the subtube that gathers dust of gathering dust of 219mm at the long 4m internal diameter of hole welding;
(2), on the iron powder stream pipeline of dust-precipitator and apart from the position perforate of slag-drip opening 2.5m, weld the subtube that gathers dust;
(3), the circulating pipe with dust-precipitator is connected to top, iron powder storehouse and water mist sprinkling device and control valve is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103862519A CN102888472A (en) | 2012-10-12 | 2012-10-12 | Method for enhancing grade of vertical mill return iron powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103862519A CN102888472A (en) | 2012-10-12 | 2012-10-12 | Method for enhancing grade of vertical mill return iron powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102888472A true CN102888472A (en) | 2013-01-23 |
Family
ID=47532154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103862519A Pending CN102888472A (en) | 2012-10-12 | 2012-10-12 | Method for enhancing grade of vertical mill return iron powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102888472A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112624637A (en) * | 2020-12-18 | 2021-04-09 | 天津水泥工业设计研究院有限公司 | High-activity steel slag micro powder preparation system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1520917A (en) * | 2003-02-08 | 2004-08-18 | 王正宇 | Air current even proportioning technology |
| CN101152636A (en) * | 2006-09-28 | 2008-04-02 | 上海宝田新型建材有限公司 | Production control logical system for blast-furnace cinder grinder |
| CN201728036U (en) * | 2010-07-08 | 2011-02-02 | 童上元 | High-temperature water-cooling dust collecting device |
| CN202137014U (en) * | 2011-05-15 | 2012-02-08 | 盐城吉达环保设备有限公司 | Outer circulation deironing grinding equipment |
| CN202460993U (en) * | 2012-01-05 | 2012-10-03 | 上海宝田新型建材有限公司 | Discharging apparatus for iron particle |
-
2012
- 2012-10-12 CN CN2012103862519A patent/CN102888472A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1520917A (en) * | 2003-02-08 | 2004-08-18 | 王正宇 | Air current even proportioning technology |
| CN101152636A (en) * | 2006-09-28 | 2008-04-02 | 上海宝田新型建材有限公司 | Production control logical system for blast-furnace cinder grinder |
| CN201728036U (en) * | 2010-07-08 | 2011-02-02 | 童上元 | High-temperature water-cooling dust collecting device |
| CN202137014U (en) * | 2011-05-15 | 2012-02-08 | 盐城吉达环保设备有限公司 | Outer circulation deironing grinding equipment |
| CN202460993U (en) * | 2012-01-05 | 2012-10-03 | 上海宝田新型建材有限公司 | Discharging apparatus for iron particle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112624637A (en) * | 2020-12-18 | 2021-04-09 | 天津水泥工业设计研究院有限公司 | High-activity steel slag micro powder preparation system |
| CN112624637B (en) * | 2020-12-18 | 2022-11-08 | 天津水泥工业设计研究院有限公司 | High-activity steel slag micro powder preparation system |
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| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130123 |