CN203484616U - System for adding silicon to molten iron outside furnace - Google Patents
System for adding silicon to molten iron outside furnace Download PDFInfo
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- CN203484616U CN203484616U CN201320516773.6U CN201320516773U CN203484616U CN 203484616 U CN203484616 U CN 203484616U CN 201320516773 U CN201320516773 U CN 201320516773U CN 203484616 U CN203484616 U CN 203484616U
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- molten iron
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Abstract
The utility model relates to the field of blast furnace smelting devices, particularly to a system for adding silicon to molten iron outside a furnace. The system comprises a blast furnace and a trough which is connected with a blast furnace tap hole; the system also comprises a silicon adding device, an injection device and a molten iron conveying device; the silicon adding device is connected with the trough through a silicon adding pipeline; the molten iron conveying device moves between the trough and the injection device freely. According to the system for adding the silicon to the molten iron outside the furnace, the structure is simple, the operation is convenient, silicon iron powder can be added into the molten iron outside the furnace rapidly and effectively, and the silicon content of the molten iron can be improved under the conditions that the environment-friendly and hygienic effects are achieved and the energy consumption is reduced.
Description
Technical field
the utility model relates to blast furnace process device field, relates in particular to the outer increasing silicon in molten iron system of a kind of stove.
Background technology
In blast furnace process industry, blast furnace want long-term production meet spheroidal graphite cast-iron with low S(containing S≤0.020%), high Si iron, feasible technically from blast furnace desulfuration in furnace, but unreasonable economically, difficulty is larger, need to adopt high furnace temperature, high alkalinity, large quantity of slag technique, cause blast furnace coke ratio to increase, yield reducation, smelting cost increases, and the target of enterprise's high yield and low cost is difficult to realize.
At present, domestic blast furnace process spheroidal graphite cast-iron has three kinds of methods.First method is to control the content of P, Mn, Ti in iron ore: for reaching the requirement of Mn, Ti content in product requirement or casting iron, need to purchase P, Mn, mineral that Ti content is lower, resource is restricted, and cost is very high, can not meet the requirement cheaply of current steel market; Second method is the outer increasing silicon in molten iron of stove: manually in trough, add ferrosilicon powder, because of the density of the density ratio molten iron of ferrosilicon light, drop into the ferrosilicon powder part fusing in molten iron, another part ferrosilicon powder floats on molten iron surface, during casting pig, cause ferrosilicon bonding and waste, improved production cost, and require evenly to add ferrosilicon powder by amount of calculation while increasing silicon, but in practical operation, be difficult to control, the labour intensity of this method is very large simultaneously; The third method is molten iron winding-up ferrosilicon powder: spray gun is inserted to the ferrosilicon powder of jetting in molten iron, because will reaching Si content, molten iron is about 75%, large, the consuming time length of ferrosilicon powder winding-up consumption, and the air-flow super vigorous stirring in molten iron during ferrosilicon powder winding-up, producing volume of smoke pollutes and takes away large calorimetric, cause molten iron flow poor, energy loss is large, and energy consumption is high.
Utility model content
In order to overcome prior art deficiency, the utility model provides a kind of stove outer increasing silicon in molten iron system.The utility model is simple in structure, easy to operate, can outside stove, in molten iron, increase quickly and efficiently ferrosilicon powder, at environmentally-friendly sanitary, reduces under the prerequisite of energy consumption, improves silicon content of hot metal.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is as follows:
The outer increasing silicon in molten iron system of a kind of stove, comprise blast furnace and the trough being connected with blast furnace iron notch, described system also comprises and adds silicon device, blows and sprays device and molten iron toter, adds silicon device and is connected with trough by adding silicone tube road, and molten iron toter is in trough and blow and spray between device and move freely.
The molten iron of having smelted in blast furnace is from tapping hole slagging-off, flow in trough, then add silicon device according to the flow of molten iron, in trough, add ferrosilicon powder or silicon-iron block, wherein a part of ferrosilicon is dissolved in molten iron, another part ferrosilicon is along with molten iron finally flows out from trough, flow into molten iron toter, then molten iron toter moves freely, move to and blow and spray device below, blow and spray device and blow and spray nitrogen in the molten iron of molten iron toter, the motion of nitrogen gas stirring molten iron, promotes the further thawing of ferrosilicon in molten iron.
Preferably, the described device that blows and sprays comprises that nitrogen storage storage and nitrogen blow rifle.
While blowing and spraying device work, nitrogen is blown to rifle and insert below molten iron level, the gas outlet that nitrogen blows rifle is 0.2 m-0.3m to the vertical range bottom molten iron; Appropriate design blows and sprays nitrogen amount and blows and sprays air pressure, guarantees that nitrogen blows and sprays process and steadily carries out, and according to the dissolving situation of ferrosilicon in molten iron, designs the duration that blows and sprays of nitrogen, promotes that ferrosilicon dissolves completely, makes molten iron even.
Preferably, the described device that blows and sprays also comprises dust arrester, and dust arrester comprises that being arranged on nitrogen blows the cleaning shaft that the dust excluding hood on rifle is connected with dust excluding hood with one end, and the cleaning shaft other end is connected with dust exhaust apparatus.
When nitrogen blows rifle, insert molten iron when following, more than dust excluding hood covers molten iron level, then dust exhaust apparatus startup, by cleaning shaft, siphons away the flue gas generating below dust excluding hood environmentally-friendly sanitary.
Preferably, described molten iron toter is hot-metal ladle and carriage.
Preferably, described system also comprises and is installed in trough and blows and sprays the track between device, and hot-metal ladle and carriage is flexibly connected with track.
Such design, has stipulated the movement locus of hot-metal ladle and carriage, is more applicable for the needs of suitability for industrialized production.
Compared with prior art, tool has the following advantages the utility model:
1) simple in structure, easy to operate, the outer increasing silicon in molten iron of stove fast, effectively, has alleviated in State of Blast Furnace and has increased silicon burden, has reduced coke ratio, for the low cost of blast furnace, smelts and has created advantage;
2) environmentally-friendly sanitary, and improved iron block quality, make follow-up smelting device can keep steady production, and reduced energy consumption and cost, be conducive to the efficient utilization of blast furnace to the energy and resource, improve Competitive Products.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The specific embodiment
below in conjunction with accompanying drawing, the utility model is described in further detail.
The outer increasing silicon in molten iron system of a kind of stove, comprise blast furnace 1 and the trough 2 being connected with blast furnace 1 tapping hole, described system also comprises and adds silicon device 3, blows and sprays device and hot-metal ladle and carriage 5, adding silicon device 3 is connected with trough 2 by adding silicone tube road 4, blow and spray 2 of device and trough and be installed with track 6, hot-metal ladle and carriage 5 is flexibly connected with track 6.Blow and spray device and comprise that nitrogen storage storage 7 and nitrogen blow rifle 8, nitrogen blows rifle 8 and is provided with dust excluding hood 9, and cleaning shaft 10 one end are connected with dust excluding hood 9, and the other end is connected with dust exhaust apparatus 11.
During the utility model work, the molten iron of having smelted in blast furnace 1 is from tapping hole slagging-off, flow in trough 2, then add silicon device 3 according to the flow of molten iron, by adding silicone tube road 4, in trough 2, add ferrosilicon powder or silicon-iron block, wherein a part of ferrosilicon is dissolved in molten iron, part ferrosilicon is along with molten iron finally flows out from trough 2, flow in hot-metal ladle and carriage 5, then hot-metal ladle and carriage 5 moves to nitrogen along track 6 and blows rifle 8 belows, nitrogen blows below the molten iron level in rifle 8 insertion hot-metal ladle and carriages 5, adjust the speed that nitrogen blows and sprays, pressure and duration, nitrogen storage storage 7 blows rifle 8 by nitrogen and blow and spray nitrogen in molten iron in hot-metal ladle and carriage 5, the motion of nitrogen gas stirring molten iron, promote the further thawing of ferrosilicon, now, dust excluding hood 9 covers in hot-metal ladle and carriage 5 more than molten iron level, then dust exhaust apparatus 11 starts, by cleaning shaft 10, the flue gas that dust excluding hood 9 belows are generated siphons away, environmentally-friendly sanitary.
Claims (5)
1. the outer increasing silicon in molten iron system of a stove, comprise blast furnace and the trough being connected with blast furnace iron notch, it is characterized in that: described system also comprises and adds silicon device, blows and sprays device and molten iron toter, add silicon device and be connected with trough by adding silicone tube road, molten iron toter is in trough and blow and spray between device and move freely.
2. the outer increasing silicon in molten iron system of a kind of stove as claimed in claim 1, is characterized in that: the described device that blows and sprays comprises that nitrogen storage storage and nitrogen blow rifle.
3. the outer increasing silicon in molten iron system of a kind of stove as claimed in claim 2, it is characterized in that: the described device that blows and sprays also comprises dust arrester, dust arrester comprises that being arranged on nitrogen blows the cleaning shaft that the dust excluding hood on rifle is connected with dust excluding hood with one end, and the cleaning shaft other end is connected with dust exhaust apparatus.
4. the outer increasing silicon in molten iron system of a kind of stove as claimed in claim 1, is characterized in that: described molten iron toter is hot-metal ladle and carriage.
5. the outer increasing silicon in molten iron system of a kind of stove as claimed in claim 4, is characterized in that, described system also comprises and be installed in trough and blow and spray the track between device, and hot-metal ladle and carriage is flexibly connected with track.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320516773.6U CN203484616U (en) | 2013-08-23 | 2013-08-23 | System for adding silicon to molten iron outside furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320516773.6U CN203484616U (en) | 2013-08-23 | 2013-08-23 | System for adding silicon to molten iron outside furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203484616U true CN203484616U (en) | 2014-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320516773.6U Expired - Lifetime CN203484616U (en) | 2013-08-23 | 2013-08-23 | System for adding silicon to molten iron outside furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN203484616U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107099635A (en) * | 2017-06-20 | 2017-08-29 | 重庆科技学院 | A kind of molten iron groove splashproof dust arrester |
| CN113215358A (en) * | 2021-04-08 | 2021-08-06 | 毛建花 | Pig iron smelting silicon increasing device suitable for different particle sizes |
-
2013
- 2013-08-23 CN CN201320516773.6U patent/CN203484616U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107099635A (en) * | 2017-06-20 | 2017-08-29 | 重庆科技学院 | A kind of molten iron groove splashproof dust arrester |
| CN113215358A (en) * | 2021-04-08 | 2021-08-06 | 毛建花 | Pig iron smelting silicon increasing device suitable for different particle sizes |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140319 |
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| CX01 | Expiry of patent term |