CN104232819A - Granulating device and method of liquid steel slag or liquid iron slag - Google Patents
Granulating device and method of liquid steel slag or liquid iron slag Download PDFInfo
- Publication number
- CN104232819A CN104232819A CN201310247073.6A CN201310247073A CN104232819A CN 104232819 A CN104232819 A CN 104232819A CN 201310247073 A CN201310247073 A CN 201310247073A CN 104232819 A CN104232819 A CN 104232819A
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- China
- Prior art keywords
- slag
- pipeline
- granulation
- scum
- jet pipe
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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
Abstract
The invention discloses a granulating method of liquid steel slag or liquid iron slag generated in smelting of steel or iron. Symmetric molten slag pipelines perpendicular to the axis of a throat part are arranged at the throat part of a granulating spray pipe, so that the molten slag is granulated and cooled by utilizing high-speed airflows at the throat part; and then the granulated slag sprayed from the granulating spray pipe is mixed with cooling airflows in an exterior space, so that the granulated slag is solidified. The method has the characteristics that the required components are simple in structure and easy to operate, and the granulated steel slag or the granulated iron slag is relatively small and uniform in granule diameters.
Description
Technical field
The present invention relates to the liquid steel slag of a kind of iron and steel smelting generation or the granulating method of scum.
Background technology
The slag that domestic steel industry iron and steel smelting produces or ironmaking scum treatment process mainly contain: the vexed powdering techniques of slag heat, drum process process liquid slag technology, slag wind pure technology, HK method slag granulation system etc.
In actual industrial production, also there is a lot of problem in the granulation of slag or scum and waste heat recovery, and the amount of heat causing slag and scum to carry is not fully used.The feature of Rafael nozzle or Venturi tube or other combination spray pipes be made up of reducing pipe and increaser is that structure is simple; easy realization and be convenient to arrange, and utilizes its throat's high velocity air also not relate in actual production technology the method that slag or scum are granulated and cool.
Summary of the invention
The object of this invention is to provide a kind of structure simple, be convenient to arrange and use, and the particle diameter of the graining steel slag obtained or scum is little and even.
In order to achieve the above object, the present invention has following technical scheme:
The granulating device of a kind of liquid steel slag or scum; comprise receiver, slag pipeline, airflow line, granulation jet pipe; described receiver is connected with slag pipeline; this slag pipeline is connected on granulation jet pipe; described airflow line is connected with an end of granulation jet pipe, and described slag pipeline is perpendicular to granulation nozzle axis, and this slag pipeline is some; when slag pipeline is many, slag pipeline is arranged symmetrically with through the face of granulation nozzle axis.
Wherein, the described material jet pipe combination spray pipe that is Rafael nozzle or Venturi tube or is made up of reducing pipe and increaser.
A granulating method for liquid steel slag or scum, is characterized in that comprising the following steps:
1) molten steel slag in receiver or scum flow out in slag pipeline;
2) high velocity air is through airflow line to being granulated pipeline, and the slag carrying amount of heat flowed out in step 1) or scum meet the high velocity air impact of granulation pipeline and cooling forms grain slag;
3) step 2) grain slag that formed forms grain slag jet through the ejection of granulation jet pipe, then through the cooling of space outerpace air-flow, make its rapid solidification, form solid-state grain slag.
Granulation pipeline throat gas velocity is not less than 60m/s.
Owing to taking above technical scheme, the invention has the advantages that:
1, apparatus of the present invention structure is simple, is convenient to arrange and use, the slag of gained or scum particle diameter smaller and evenly.
2, this invention provides a kind of new resolving ideas by for the granulation of slag or scum and waste heat recovery problem, is conducive to it and is utilized more fully in steel industry.Therefore, the method has good application prospect.
Accompanying drawing explanation
Fig. 1 is structural front view of the present invention;
Fig. 2 is the decoration form schematic diagram of slag pipeline of the present invention.
In figure: 1, high velocity air 2, granulation nozzle flow entrance 3, granulation jet pipe 4, granulation nozzle throat 5, slag pipeline 6, molten steel slag or scum 7, exterior cooling air-flow 8, grain slag jet 9, receiver.
Embodiment
Below implement for illustration of the present invention, but be not used for limiting the scope of the invention.
See Fig. 1-2, the granulating device of a kind of liquid steel slag of the present invention or scum, comprise receiver, slag pipeline, airflow line, granulation jet pipe, described receiver is connected with slag pipeline, this slag pipeline is connected on granulation jet pipe, described airflow line is connected with an end of granulation jet pipe, described slag pipeline is the symmetrical slag pipeline perpendicular to granulation nozzle axis, described slag pipeline can single or many layouts, when described slag pipeline is many, should to be arranged symmetrically with perpendicular to ground and through the face of nozzle axis, the combination spray pipe that described material jet pipe is Rafael nozzle or Venturi tube or is made up of reducing pipe and increaser.
The granulating method of a kind of liquid steel slag or scum:
1) molten steel slag in receiver or scum flow out in slag pipeline;
2) high velocity air is through airflow line to being granulated pipeline, and the slag carrying amount of heat flowed out in step 1) or scum meet high velocity air impact and cooling forms grain slag;
3) step 2) grain slag that formed forms grain slag jet through the ejection of granulation jet pipe, then through the cooling of space outerpace air-flow, make its rapid solidification, form solid-state grain slag.
For making liquid steel slag or scum in throat's (nozzle throat refers to that section that jet pipe is the narrowest) by air-flow high speed impact with entrainment and disperse to be formed comparatively small droplets, throat's air-flow should have the speed being not less than 60m/s, and throat pressure P should meet following formula:
P<p
0+ ρ
liquidgh-Δ p
Wherein:
P: throat pressure
P
0: normal atmosphere
ρ
liquid: the density of slag in slag pipeline
H: the free height of molten slag in slag pipeline
Δ p: slag flow in slag pipeline produce Pressure Drop
Obviously, above-mentioned example of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here cannot give exhaustive to all embodiments.Every belong to technical scheme of the present invention the apparent change of extending out or variation be still in the row of protection scope of the present invention.
Claims (4)
1. the granulating device of a liquid steel slag or scum; comprise receiver, slag pipeline, airflow line, granulation jet pipe; described receiver is connected with slag pipeline; this slag pipeline is connected on granulation jet pipe; described airflow line is connected with an end of granulation jet pipe, it is characterized in that: described slag pipeline is perpendicular to granulation nozzle axis, and this slag pipeline is some; when slag pipeline is many, slag pipeline is arranged symmetrically with through the face of granulation nozzle axis.
2. the granulating device of a kind of liquid steel slag as claimed in claim 1 or scum, is characterized in that: the combination spray pipe that described material jet pipe is Rafael nozzle or Venturi tube or is made up of reducing pipe and increaser.
3. the granulating method of a kind of liquid steel slag as claimed in claim 1 or scum, is characterized in that comprising the following steps:
1) molten steel slag in receiver or scum flow out in slag pipeline;
2) high velocity air is through airflow line to being granulated pipeline, and the slag carrying amount of heat flowed out in step 1) or scum meet the high velocity air impact of granulation pipeline and cooling forms grain slag;
3) step 2) grain slag that formed forms grain slag jet through the ejection of granulation jet pipe, then through the cooling of space outerpace air-flow, make its rapid solidification, form solid-state grain slag.
4. the granulating method of a kind of liquid steel slag as claimed in claim 3 or scum, is characterized in that: granulation pipeline throat gas velocity is not less than 60m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310247073.6A CN104232819A (en) | 2013-06-20 | 2013-06-20 | Granulating device and method of liquid steel slag or liquid iron slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310247073.6A CN104232819A (en) | 2013-06-20 | 2013-06-20 | Granulating device and method of liquid steel slag or liquid iron slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104232819A true CN104232819A (en) | 2014-12-24 |
Family
ID=52221709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310247073.6A Pending CN104232819A (en) | 2013-06-20 | 2013-06-20 | Granulating device and method of liquid steel slag or liquid iron slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104232819A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107586900A (en) * | 2017-08-22 | 2018-01-16 | 上海驰春节能科技有限公司 | A kind of method and device of spray-granulated molten blast furnace slag |
| CN109338022A (en) * | 2018-12-10 | 2019-02-15 | 凉山瑞京环保资源开发有限公司 | High-temperature liquid state steel slag is atomized Laval nozzle, atomization bellows and atomization method |
| CN111850191A (en) * | 2020-08-25 | 2020-10-30 | 山东盛阳工程机械有限公司 | Adjustable high-temperature liquid steel slag granulating device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87102197A (en) * | 1987-03-18 | 1988-11-02 | 孙竹良 | The novel process of fechnology for direct conversion of blast furnace melting slag into cement clinker |
| CN102732654A (en) * | 2012-07-11 | 2012-10-17 | 江苏东能环保能源科技有限公司 | Device and method for carrying out granulation treatment and residual heat utilization on liquid-state furnace slag |
| CN203462061U (en) * | 2013-06-20 | 2014-03-05 | 山东建筑大学 | Granulation device of liquid-state steel slag or iron slag |
-
2013
- 2013-06-20 CN CN201310247073.6A patent/CN104232819A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87102197A (en) * | 1987-03-18 | 1988-11-02 | 孙竹良 | The novel process of fechnology for direct conversion of blast furnace melting slag into cement clinker |
| CN102732654A (en) * | 2012-07-11 | 2012-10-17 | 江苏东能环保能源科技有限公司 | Device and method for carrying out granulation treatment and residual heat utilization on liquid-state furnace slag |
| CN203462061U (en) * | 2013-06-20 | 2014-03-05 | 山东建筑大学 | Granulation device of liquid-state steel slag or iron slag |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107586900A (en) * | 2017-08-22 | 2018-01-16 | 上海驰春节能科技有限公司 | A kind of method and device of spray-granulated molten blast furnace slag |
| CN107586900B (en) * | 2017-08-22 | 2019-03-29 | 上海驰春节能科技有限公司 | A kind of method and device of spray-granulated molten blast furnace slag |
| CN109338022A (en) * | 2018-12-10 | 2019-02-15 | 凉山瑞京环保资源开发有限公司 | High-temperature liquid state steel slag is atomized Laval nozzle, atomization bellows and atomization method |
| CN111850191A (en) * | 2020-08-25 | 2020-10-30 | 山东盛阳工程机械有限公司 | Adjustable high-temperature liquid steel slag granulating device |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141224 |
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| RJ01 | Rejection of invention patent application after publication |