CN103834797B - The iron ore concentrate continuous unfreezing technique of a kind of extremely frigid zones and equipment - Google Patents
The iron ore concentrate continuous unfreezing technique of a kind of extremely frigid zones and equipment Download PDFInfo
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- CN103834797B CN103834797B CN201210472597.0A CN201210472597A CN103834797B CN 103834797 B CN103834797 B CN 103834797B CN 201210472597 A CN201210472597 A CN 201210472597A CN 103834797 B CN103834797 B CN 103834797B
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Abstract
The invention discloses iron ore concentrate continuous unfreezing technique and the equipment of a kind of extremely frigid zones, including: 1, raw material freezes the control of block granularity；2, the device systems configuration of raw material thawing technique；3, the Multifunction ring defrosting stove of frequency conversion drive mode.The art of this patent can solve the problem that: 1, extremely frigid zones steel plant (or raw material preparation similar other factories), and in ice period, the raw material such as iron ore concentrate is formed and frozen greatly block, it is impossible to meet quantity-produced problem；2, the broken and screening only with one-level in system, reduces energy consumption, saves place；3, available steel works sintering cooling waste gas provides the defrosting energy, reduces total energy consumption further；4, native system is utilized, it is possible to solve being dried and as utilizing the sintering cooling waste gas energy-saving and emission-reducing measure to raw material preheating of water-containing material in summer.
Description
Technical field
This patent relates to technical field of steel production, is specifically related to feed preparation process and equipment.
Background technology
To in the research of this process and practice process, applicant have found that:
1, the technical problem that extremely frigid zones steel plant encounter: iron ore concentrate (powder) be iron and steel produce in main
Raw material, when prepared by raw material, it is necessary to control at below 15mm by iron ore concentrate lumpiness, to meet and other
The accurate ratio requirement of raw material, just can make qualified sintering deposit.Extremely frigid zones steel plant, annual ice period is long,
In ice period, iron ore concentrate is formed and is frozen greatly block, and raw material granularity just cannot meet production needs.
2, the prior art of feed change granularity:
Manually or mechanically crush；
(2) building thaw pit, heating is thawed.
3, prior art shortcoming:
(1) hand breaking, bad environments, inefficiency, it is impossible to realize modern production；
(2) Mechanical Crushing, one-level is broken is unable to reach granularity requirements, need to carry out multiple stage crushing and screening, consume
Electric energy is big；
(3) thaw pit thaws, and thaw pit need to be incubated difficulty from door input and output material, and heat-energy losses is big, input and output material work
Measure also big, be difficult to tissue continuity and produce.
4, the art of this patent feature: this raw material continuous unfreezing technique, iron ore concentrate freezes block and only need to break through one-level
Broken, by screening, directly it is transported to defrosting stove discharging rubber belt conveyor as grate-layer material less than 15mm material, freezes greatly
Block enters New Ring-like Type defrosting stove, utilizes steel mill's side-product blast furnace gas or sintering cooling waste gas continuous way solution
Freeze.Energy consumption is low, production is continuous, it is simple to tissue modern production.
Summary of the invention
The art of this patent provides a kind of continuous way raw material thawing technique and equipment, utilizes steel mill's coke-oven coal
Gas or sintering furnace waste gas heat and New Ring-like Type defrosting stove technology, and continuous way is thawed and conveying extremely frigid zones steel mill
Fine powder in winter ore deposit or other industry are endured cold granular material, it is ensured that produce and are smoothed out, make raw material production not by season
Joint limits.
Simultaneously, it is possible to utilize native system to solve the dry of water-containing material in summer and as utilizing the cold waste gas of sintered ring
Energy-saving and emission-reducing measure to raw material preheating.
Accompanying drawing explanation
In order to be illustrated more clearly that the art of this patent embodiment or technical scheme of the prior art, under
The accompanying drawing used required in embodiment or description of the prior art will be briefly described by face, it is clear that
Ground, the accompanying drawing in describing below is only an embodiment of the art of this patent, for ordinary skill
From the point of view of personnel, on the premise of not paying creative work, it is also possible to obtain other work according to these accompanying drawings
Skill is arranged.
Fig. 1 is continuous way raw material defrosting system process layout drawing；
Fig. 2 is the capital equipment New Ring-like Type defrosting stove of continuous way raw material thawing technique；
Fig. 3 is continuous way raw material defrosting system process figure.
Detailed description of the invention
As it is shown in figure 1, the present invention is that raw material continuous way defrosting system process is implemented based on iron ore
Example.
Below in conjunction with the accompanying drawing in the art of this patent embodiment, to the technical side in the art of this patent embodiment
Case is described:
First, will thaw ore deposit, through the grid of aperture 700mm be collected in broken between 1 feed bin in, its
In will be greater than the defrosting block of 700mm and use rock drill to dig the broken cause defrosting block less than 700mm on grid；
Through sealing-tape machine 2 transport to screening stand 3, after first passing through palate crusher, screen out less than 15mm's
Defrosting block is fed directly to reclaim feed bin through sealing-tape machine 5, will be more than the defrosting block of 15mm less than 200mm,
It is transported to annular defrosting stove continuous unfreezing through transporter 6.
1, charging
It is provided with ore deposit groove, it is ensured that continuously and the bed of material uniform, the bed of material controls feeding at annular defrosting stove entrance 9
300mm is high (adjustable according to defrosting effect)；
2, operative mechanism
1) speed of service
Revolution chassis rotating speed is 1～1.5 turn/h, and installing initial rotating speed is 1.5 turns/h, and motor uses frequency conversion to adjust
Speed, chassis rotating speed is minimum is adjusted to 1 turn/h in revolution.
2) heat supply
Annular defrosting stove is provided thermal source (heat smoke) by coal gas hot-blast stove 11, and wherein combustion air uses warp
Cross the hot-air after metallurgic waste gas heat exchange；Material is built on stilts in stove to be placed, and material is upper and lower all send hot blast；?
Press thawing condition in annular furnace, need reasonable layout to have the unpowered turning device developed voluntarily, it is achieved thaw
The upset of block, shattering process, reach homogeneous heating, efficient purpose.
3) construction features
Annular defrosting stove uses alumina silicate fibre insulation, and body of heater is light, by the steel construction supporting of ring week, inside and outside furnace bottom
Being sealed by striker plate and material sealing groove, body of heater is formed around observing and maintenance window；Drive form uses double
Row's bushroller chain drags, and is simple to manufacture, easy to maintenance；Revolution chassis is by middle part supporting device contact and determines
Position, every chassis is run on circular orbit by walking support wheel, it is ensured that chassis operates steadily；Middle part
Bearing apparatus uses the large-scale ball bearing of divergence type angular contact to install, reliable, convenient for installation and maintenance.
3, discharging
Annular defrosting outlet of still 10 uses plough spiral to combine discharge system discharging.Go out the furnace rear that thaws, Haematite
The granularity in ore deposit is less than 15mm.
It addition, for realizing after environmental requirement flue gas first passes through bag-type dust collector 8, then discharged by chimney 7.
The system process that continuous way thawed makes the appropriate adjustments, it may also be used for solve summer water-containing material be dried and
As utilizing the energy-saving and emission-reduction measure to raw material preheating of the sintered ring cold waste gas.
Obviously, described embodiment is only a part of embodiment of the art of this patent rather than whole realities
Execute example.Based on the embodiment in the art of this patent, those of ordinary skill in the art are not making creative labor
The all other embodiments obtained under dynamic premise, broadly fall into the scope of the art of this patent protection.
The art of this patent embodiment provides a kind of technology arrangement, and Fig. 3 is shown in its technological process.
Claims (4)
1. an iron ore concentrate continuous unfreezing technique for extremely frigid zones, this technological requirement:
Use the grid of aperture 700mm, the defrosting block of iron ore concentrate is separated into and is more than or equal to
The defrosting block of 700mm and the defrosting block less than 700mm；
Defrosting block more than or equal to 700mm uses rock drill to dig broken cause on grid and is less than
The defrosting block of 700mm；
Defrosting block less than 700mm is broken into the defrosting less than 200mm by palate crusher
Block；
Defrosting block less than 200mm delivers to annular defrosting stove continuous unfreezing；
Going out the furnace rear that thaws, the granularity of iron ore concentrate is less than 15mm.
2. the iron ore concentrate continuous unfreezing technique of a kind of extremely frigid zones described in claim 1, its
Being characterised by the control of the defrosting block granularity determined in technique, the size of this granularity directly affects and is
The equipment composition of system and the height of energy consumption level.
3. the iron ore concentrate continuous unfreezing technique of a kind of extremely frigid zones described in claim 1, its
It is characterised by, the device systems configuration of the iron ore concentrate continuous unfreezing technique of described extremely frigid zones, bag
Include disintegrating machine, screening machine, annularly track run chassis and fixed annular bonnet,
Automatic charging device, knockdown device for discharging.
4. according to the iron ore concentrate continuous unfreezing technique of the extremely frigid zones described in claim 3
Device systems configures, it is characterised in that:
Multi-functional annular defrosting stove, described annular defrosting stove is used to be equipped with feeding system and plough
Spiral combination discharge system, it is ensured that defrosting system realizes continuous way and produces；
Bogie wheel even running on circular orbit, platform are walked by the rotary table garage carrying material of enduring cold
The driving of car uses three-in-one deceleration device to drive, frequency control, adapts to different material and not
With the defrosting requirement in season, simple in construction, convenient for installation and maintenance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210472597.0A CN103834797B (en) | 2012-11-21 | 2012-11-21 | The iron ore concentrate continuous unfreezing technique of a kind of extremely frigid zones and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210472597.0A CN103834797B (en) | 2012-11-21 | 2012-11-21 | The iron ore concentrate continuous unfreezing technique of a kind of extremely frigid zones and equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103834797A CN103834797A (en) | 2014-06-04 |
| CN103834797B true CN103834797B (en) | 2016-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210472597.0A Active CN103834797B (en) | 2012-11-21 | 2012-11-21 | The iron ore concentrate continuous unfreezing technique of a kind of extremely frigid zones and equipment |
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| Country | Link |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU779423A1 (en) * | 1978-07-24 | 1980-11-15 | Коммунарский горно-металлургический институт | Continuous line for thawing iron-containing materials |
| CN1084632A (en) * | 1993-05-08 | 1994-03-30 | 鞍山钢铁公司 | Utilize the thaw process of material of heat of cooling sintering deposit low-temperature zone waste gas |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100775307B1 (en) * | 2001-11-05 | 2007-11-08 | 주식회사 포스코 | Recliamer apparatus for removing and pulverizing frozen ore |
-
2012
- 2012-11-21 CN CN201210472597.0A patent/CN103834797B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU779423A1 (en) * | 1978-07-24 | 1980-11-15 | Коммунарский горно-металлургический институт | Continuous line for thawing iron-containing materials |
| CN1084632A (en) * | 1993-05-08 | 1994-03-30 | 鞍山钢铁公司 | Utilize the thaw process of material of heat of cooling sintering deposit low-temperature zone waste gas |
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| Publication number | Publication date |
|---|---|
| CN103834797A (en) | 2014-06-04 |
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Effective date of registration: 20160921 Address after: 100000 Beijing city Xicheng District Street No. 275 Applicant after: Beijing Industrial Design & Research Institute Co Ltd Address before: 430080 No. 6 metallurgical Avenue, Qingshan District, Hubei, Wuhan Applicant before: WUHAN HUAZHONG GONGJIAN ENGINEERING TECHNOLOGY CO., LTD. |
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