CN109112320A - A kind of bottom blowing copper smelting device supplied using air brick - Google Patents
A kind of bottom blowing copper smelting device supplied using air brick Download PDFInfo
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- CN109112320A CN109112320A CN201811278177.2A CN201811278177A CN109112320A CN 109112320 A CN109112320 A CN 109112320A CN 201811278177 A CN201811278177 A CN 201811278177A CN 109112320 A CN109112320 A CN 109112320A
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- brick
- air
- slit
- air supply
- core
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/0028—Smelting or converting
Abstract
The present invention relates to a kind of bottom blowing copper smelting device supplied using air brick, including smelting furnace and N number of air brick air supply device, N >=5；Air brick air supply device is made of brick cup, slit refractory brick core and metal air supply pipe, and brick cup is in the backup lining brick at smelting furnace bottom；Brick cup bottom sets metal air supply pipe, and slit refractory brick core is set in brick cup, forms gas chamber between the bottom surface and brick cup inner bottom surface of slit refractory brick core, the top of metal air supply pipe is connected to gas chamber；Slit refractory brick core is made of metal shell and the refractory material core being filled in inside metal shell, and several slits are uniformly arranged in refractory material core, and gas chamber is connected to by slit with smelting furnace inner space.The present invention can effectively solve the problem that the problems such as matte inferior separating effect and feed opening easily block caused by existing oxygen rifle bottom blowing jet mixing is excessively strong and inhomogeneities, guarantee going on smoothly for bottom blowing STEELMAKING PRODUCTION.
Description
Technical field
The present invention relates to technical field of non-ferrous metallurgy more particularly to a kind of bottom blowing copper smelting devices supplied using air brick.
Background technique
Melting process for copper in oxygen bottom is one of advanced Copper making technology in the world, and bottom blowing process process is short, and configuration is simple, is thrown
Rate have been cited as state key popularization and application technology with low.The smelting equipment that bottom melting copper method uses for horizontal bottom blowing converter,
Stirring intensity of molten pool is very high, can be realized autogenous smelting, heats without additional fuel, low energy consumption；To raw material it is adaptable,
Without dry and granulation.Suitable for handling low-grade, complicated, intractable polymetallic ore material, containing the high noble metal association of gold and silver
Mine or even rubbish mineral aggregate.
Bottom melting process for copper is also in developing stage, however it remains many shortcoming and defect.Specifically include that Cu in smelting slag
Mass fraction is high and ingredient fluctuation is violent；Furnace charge is easy to cohere blocking in feed opening.Both of these problems, which have become, hinders oxygen bottom
The important technology problem of melting process for copper further genralrlization.
A main cause for causing the above problem is exactly that bottom blowing oxygen rifle jet stream is strong and non-uniform stirring behavior.At present
Using porous type oxygen rifle, the effective vapor permeation area of oxygen rifle is small for bottom blowing, and under high pressure, Gas injection speed is close to velocity of sound, to penetrate
Streaming bath smelting.Since flow velocity is higher, gas after oxygen rifle sprays into metastable air column rather than intermittent bubble
Form enter in melt.It can make melt stirring fierceness in furnace in this way, the clinker and matte inferior separating effect of decanting zone cause to melt
It refines Cu mass fraction height in slag and ingredient fluctuation is violent.In addition strong jet stream be easy to cause splash, will lead to the furnace of whereabouts in this way
Expect to be formed around feed opening lower edge with the high-temperature fusant of splash and cohere, entire feed opening is even blocked when serious, threatens production
Go on smoothly.
In addition, oxygen rifle inconvenience blow off, when needing blow off oxygen must rotating furnace, so that furnace bottom oxygen rifle spout is exposed liquid
Face.Otherwise will cause matte melt and pour into gun hole causes to block, and once stops the supple of gas or steam suddenly or air pressure is insufficient, is easy to cause
Spray gun blocking, causes safety and production accident.
Therefore, the new bottom blowing element of one kind is studied to overcome above-mentioned technical problem just and seem very urgent and important.
Summary of the invention
The present invention provides a kind of bottom blowing copper smelting devices supplied using air brick, can effectively solve the problem that existing oxygen rifle bottom blowing
The problems such as matte inferior separating effect and feed opening easily block caused by jet mixing is excessively strong and inhomogeneities, guarantees bottom blowing
STEELMAKING PRODUCTION is gone on smoothly.
In order to achieve the above object, the present invention is implemented with the following technical solutions:
A kind of bottom blowing copper smelting device supplied using air brick, including smelting furnace and N number of air brick air supply device, N >=5；
The air brick air supply device is made of brick cup, slit refractory brick core and metal air supply pipe, and brick cup is flush-mounted in smelting furnace bottom
Backup lining brick in and fit closely with backup lining brick；Brick cup bottom centre sets metal air supply pipe, and the bottom end of metal air supply pipe is to downward
Reach except furnace bottom and check valve be set on it, set slit refractory brick core in brick cup, the bottom surface of slit refractory brick core with
Form gas chamber between brick cup inner bottom surface, gas chamber inner wall is lined with metal shell, the top of metal air supply pipe be connected to gas chamber and with gold
Belong to cage connection to be integrated；The slit refractory brick core is by metal shell and the refractory material core being filled in inside metal shell
Body forms, and is uniformly arranged several slits in refractory material core, gas chamber is connected to by slit with smelting furnace inner space.
The quantity of the air brick air supply device is 5~27.
The air brick air supply device is not less than 600mm to the spacing of arrangement along smelting furnace lower shaft.
Along smelting furnace bottom, circumferentially 1~3 row, setting range are no more than in smelting furnace the air brick air supply device
The range that+14 °~-14 ° of axis two sides.
The distance of the bottom end of the brick cup to smelting furnace bottom shell body inner wall is 30~60mm.
The middle part of brick cup is arranged in the slit refractory brick core, and the upper end of slit refractory brick core extend into smelting furnace
Interior, top surface is 10~20mm higher than smelting furnace bottom resistance to material surface.
The slit refractory brick core is diametrically up-small and down-big round table-like, and diameter range is 180mm~260mm.
The width of the slit is 0.12~0.22mm.
The quantity of the slit is 18~32, and the circumferential direction along slit refractory brick core is uniformly arranged in ring-like.
The gas supply flow of the air brick air supply device is 150~300Nm3/ h, supply gas pressure are 0.6~1.4Mpa.
Compared with prior art, the beneficial effects of the present invention are:
1) it is supplied using air brick air supply device by multiple slits, can generate diameter in the melt is the small of 5-20mm
Bubble, ascent rate is slower, big with the time of contact length and contact area of melt, is more advantageous to raising oxygen utilization rate；
2) air brick air supply device is axially and radially arranged multiple along smelting furnace, and effective ventilation area is big, formed bubble
It has a very wide distribution, good dispersion, stir evenly and splash should not be caused；
3) throughput adjustable extent is big；According to metallurgical jet Intensity Design slit width, length and gap item number, in turn
Keep the adjustable extent of jet amount big, meet it is various under the conditions of copper matte regulus melting requirement；
4) main body of air brick air supply device be refractory material, long service life (with the smelting furnace furnace lining same service life), carefully
Micro- slit aperture ensures that molten bath solution will not occur to reveal and block, and has good bottom during maintaining entire furnace labour
Blow gas permeability；
5) cooling water or protective gas are not needed, more economically.
Detailed description of the invention
Fig. 1 is a kind of main view of bottom blowing copper smelting device using air brick gas supply of the present invention.
Fig. 2 is the A-A view in Fig. 1.
Fig. 3 is arragement construction schematic diagram of the air brick air supply device described in the embodiment of the present invention 1 in smelting furnace.
Fig. 4 is the B-B view in Fig. 3.
Fig. 5 is arragement construction schematic diagram of the air brick air supply device described in the embodiment of the present invention 2 in smelting furnace.
Fig. 6 is the B-B view in Fig. 3.
In figure: 1. brick cup, 2. 5. check valve of slit refractory brick core 3. gas chamber, 4. metal air supply pipe, 6. slit 7. is molten
8. air brick air supply device of furnace
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing:
As shown in Figure 1 and Figure 2, a kind of bottom blowing copper smelting device supplied using air brick of the present invention, including smelting furnace 7
And N number of air brick air supply device 8, N >=5；The air brick air supply device 8 is supplied by brick cup 1, slit refractory brick core 2 and metal
Tracheae 4 forms, and brick cup 1 fits closely in the backup lining brick of 7 furnace bottom of smelting furnace and with backup lining brick；1 bottom centre of brick cup sets
Metal air supply pipe 4, the bottom end of metal air supply pipe 4 extend downwardly into except furnace bottom and check valve 5 are arranged on it, set in brick cup 1
Slit refractory brick core 2, forms gas chamber 3 between 1 inner bottom surface of bottom surface and brick cup of slit refractory brick core 2, and 3 inner wall of gas chamber is lined with
The top of metal shell, metal air supply pipe 4 is connected to gas chamber 3 and is connected as one with metal shell；The slit refractory brick
Core 2 is made of metal shell and the refractory material core being filled in inside metal shell, if being uniformly arranged in refractory material core
Gas chamber 3 is connected to by dry slit 6, slit 6 with 7 inner space of smelting furnace.
The quantity of the air brick air supply device 8 is 5~27.
The air brick air supply device 8 is not less than 600mm along the spacing that 7 furnace bottom of smelting furnace is axially arranged.
Along 7 furnace bottom of smelting furnace, circumferentially 1~3 row, setting range are no more than smelting furnace to the air brick air supply device 8
The range that+14 °~-14 ° of central axes two sides.
The distance of the bottom end of the brick cup 1 to 7 furnace bottom inner walls of smelting furnace is 30~60mm.
The middle part of brick cup 1 is arranged in the slit refractory brick core 2, and the upper end of slit refractory brick core 2 extend into melting
In furnace 7, top surface is 10~20mm higher than 7 refractory furnace bottom surface of smelting furnace.
The slit refractory brick core 2 is diametrically up-small and down-big round table-like, and diameter range is 180mm~260mm.
The width of the slit 6 is 0.12~0.22mm.
The quantity of the slit 6 is 18~32, and the circumferential direction along slit refractory brick core 2 is uniformly arranged in ring-like.
The gas supply flow of the air brick air supply device 8 is 150~300Nm3/ h, supply gas pressure are 0.6~1.4Mpa.
Following embodiment is implemented under the premise of the technical scheme of the present invention, gives detailed embodiment and tool
The operating process of body, but protection scope of the present invention is not limited to following embodiments.Method therefor is such as without spy in following embodiments
Not mentionleting alone bright is conventional method.
[embodiment 1]
In the present embodiment, the copper matte regulus smelting furnace that the smelting furnace 7 is 130 tons, bottom blowing element uses air brick air supply device
8, the arrangement in copper matte regulus smelting furnace is as shown in Figure 3, Figure 4, and the air brick air supply device 8 used in the present embodiment is 18
It is a, along 8 center of air brick air supply device that copper matte regulus melting furnace bottom is axially arranged away from for 650mm, along copper matte regulus melting furnace bottom week
To 2 row's air brick air supply devices 8 of arrangement, wherein a row and copper matte regulus smelting furnace central axes are coaxially disposed, another row and copper matte regulus melting
The angle of furnace central axes is 14 °.
Each air brick air supply device 8 is made of brick cup 1, slit refractory brick core 2, metal air supply pipe 4.The brick cup
1 is installed on the furnace bottom of copper matte regulus smelting furnace, and 1 bottom centre of brick cup sets metal air supply pipe 4, and the diameter of metal air supply pipe 4 is 20mm, gold
The bottom end for belonging to air supply pipe 4, which is stretched out outside copper matte regulus smelting furnace, connects apparatus of oxygen supply, controls oxygen flow by check valve 5；Metal gas supply
Gas chamber 3 in the upper end connection brick cup 1 of pipe 4, the slit refractory brick core 2 of 3 top of gas chamber are made of metal shell and refractory material.
The slit refractory brick core 2 is arranged at 1 center of brick cup, and the upper end is extend into copper matte regulus smelting furnace, and copper is compared in top surface
Matting furnace refractory furnace bottom top surface is higher by 12mm.The distance of 1 bottom surface of brick cup to copper matte regulus smelting furnace bottom shell body inner surface is 40mm.
The slit refractory brick core 2 is in truncated conical shape, and the upper diameter of the rotary table is 200mm, and the rotary table lower part is straight
Diameter is 280mm.The slit 6 of connection gas chamber 3 and copper matte regulus smelting furnace inner space, the width of slit 6 are equipped in slit refractory brick core 2
For 0.15mm, the quantity of slit 6 is 24 in each slit refractory brick core 2, slit 6 along slit refractory brick core 2 in the same direction in a ring
It is evenly arranged.
In the present embodiment, single air brick air supply device 8 can injecting oxygen flow range are as follows: 180~250Nm3/ h, institute
The total oxygen supply intensity for stating air brick air supply device 8 is 2880Nm3/ h~4000Nm3/ h., supply gas pressure are 0.85~1.2Mpa.
[embodiment 2]
During this example is implemented, smelting furnace 7 is 100 tons of copper matte regulus smelting furnaces, and bottom blowing element uses air brick air supply device 8,
Arrangement in copper matte regulus smelting furnace is as shown in Figure 5, Figure 6, and the air brick air supply device 8 used in the present embodiment is 14, edge
8 center of air brick air supply device that copper matte regulus melting furnace bottom is axially arranged is away from for 620mm, circumferentially along copper matte regulus melting furnace bottom
2 row's air brick air supply devices 8, two rows of air brick air supply devices 8 are symmetrical arranged along copper matte regulus smelting furnace central axes, folder between the two
Angle is 18 °.
Each air brick air supply device 8 is made of brick cup 1, slit refractory brick core 2, metal air supply pipe 4.The brick cup
1 is installed on the furnace bottom of copper matte regulus smelting furnace, and 1 bottom centre of brick cup sets metal air supply pipe 4, and the diameter of metal air supply pipe 4 is 18mm.Gold
The bottom end for belonging to air supply pipe 4, which is stretched out outside copper matte regulus smelting furnace, connects apparatus of oxygen supply, controls oxygen flow by check valve 5；Metal gas supply
Gas chamber 3 in the upper end connection brick cup 1 of pipe 4, the slit refractory brick core 2 of 3 top of gas chamber are made of metal shell and refractory material.
The slit refractory brick core 2 is arranged at 1 center of brick cup, and the upper end is extend into copper matte regulus smelting furnace, and copper is compared in top surface
Matting furnace refractory furnace bottom top surface is higher by 15mm.The distance of brick cup bottom surface to copper matte regulus smelting furnace bottom shell body inner surface is 50mm.
The slit refractory brick core 2 is in truncated conical shape, and the upper diameter of the rotary table is 220mm, and the rotary table lower part is straight
Diameter is 308mm.The slit 6 of connection gas chamber 3 and copper matte regulus smelting furnace inner space, the width of slit 6 are equipped in slit refractory brick core 2
For 0.18mm, the quantity of slit 6 is 28 in each slit refractory brick core 2, slit 6 along slit refractory brick core 2 in the same direction in a ring
It is evenly arranged.
In the present embodiment, the range of single 8 injecting oxygen flow of air brick air supply device are as follows: 300~350Nm3/ h, it is described
Total oxygen supply intensity of air brick air supply device 8 is 6000Nm3/ h~7000Nm3/ h., supply gas pressure are 0.85~1.2Mpa.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of bottom blowing copper smelting device supplied using air brick, which is characterized in that including smelting furnace and N number of air brick gas supply member
Part, N >=5；The air brick air supply device is made of brick cup, slit refractory brick core and metal air supply pipe, and brick cup is flush-mounted in molten
It is fitted closely in the backup lining brick of furnace furnace bottom and with backup lining brick；Brick cup bottom centre sets metal air supply pipe, the bottom of metal air supply pipe
End extends downwardly into except furnace bottom and check valve is arranged on it, and slit refractory brick core, slit refractory brick core are set in brick cup
Bottom surface and brick cup inner bottom surface between form gas chamber, gas chamber inner wall is lined with metal shell, and the top of metal air supply pipe and gas chamber connect
Lead to and is connected as one with metal shell；The slit refractory brick core is by metal shell and is filled in resistance to inside metal shell
Fiery material core forms, and is uniformly arranged several slits in refractory material core, gas chamber is connected to by slit with smelting furnace inner space.
2. a kind of bottom blowing copper smelting device supplied using air brick according to claim 1, which is characterized in that described ventilative
The quantity of brick air supply device is 5~27.
3. a kind of bottom blowing copper smelting device supplied using air brick according to claim 1, which is characterized in that described ventilative
Brick air supply device is not less than 600mm to the spacing of arrangement along smelting furnace lower shaft.
4. a kind of bottom blowing copper smelting device supplied using air brick according to claim 1 or 3, which is characterized in that described
Along smelting furnace bottom, circumferentially 1~3 row, setting range are no more than+14 ° of smelting furnace central axes two sides to air brick air supply device
~-14 ° of range.
5. a kind of bottom blowing copper smelting device supplied using air brick according to claim 1, which is characterized in that the brick cup
Bottom end to smelting furnace bottom shell body inner wall distance be 30~60mm.
6. a kind of bottom blowing copper smelting device supplied using air brick according to claim 1, which is characterized in that the slit
The middle part of brick cup is arranged in formula refractory brick core, and the upper end of slit refractory brick core is extend into smelting furnace, and smelting furnace is compared in top surface
High 10~the 20mm in refractory furnace bottom surface.
7. a kind of bottom blowing copper smelting device supplied using air brick according to claim 1 or 6, which is characterized in that described
Slit refractory brick core is diametrically up-small and down-big round table-like, and diameter range is 180mm~260mm.
8. a kind of bottom blowing copper smelting device supplied using air brick according to claim 1, which is characterized in that the slit
Width be 0.12~0.22mm.
9. a kind of bottom blowing copper smelting device supplied using air brick according to claim 1 or 8, which is characterized in that described
The quantity of slit is 18~32, and the circumferential direction along slit refractory brick core is uniformly arranged in ring-like.
10. the bottom blowing copper smelting device that any one uses air brick gas supply described in -4 according to claim 1, which is characterized in that
The gas supply flow of the air brick air supply device is 150~300Nm3/ h, supply gas pressure are 0.6~1.4Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811278177.2A CN109112320A (en) | 2018-10-30 | 2018-10-30 | A kind of bottom blowing copper smelting device supplied using air brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811278177.2A CN109112320A (en) | 2018-10-30 | 2018-10-30 | A kind of bottom blowing copper smelting device supplied using air brick |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109112320A true CN109112320A (en) | 2019-01-01 |
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ID=64855773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811278177.2A Pending CN109112320A (en) | 2018-10-30 | 2018-10-30 | A kind of bottom blowing copper smelting device supplied using air brick |
Country Status (1)
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| CN (1) | CN109112320A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111719034A (en) * | 2019-03-21 | 2020-09-29 | 宝山钢铁股份有限公司 | Air blowing opening structure suitable for converter bottom |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040007091A1 (en) * | 2000-07-21 | 2004-01-15 | Heinrich Schliefer | Method and device for reducing the oxygen content of a copper melt |
| CN201380284Y (en) * | 2009-03-16 | 2010-01-13 | 上海梅山钢铁股份有限公司 | Double-layered slit permeable brick for bottom-blowing, powder-injecting and dephosphorizing |
| CN102642020A (en) * | 2012-04-17 | 2012-08-22 | 马钢(集团)控股有限公司 | Permeable brick for ladle |
| CN202845767U (en) * | 2012-09-25 | 2013-04-03 | 洛阳利尔耐火材料有限公司 | Steel ladle purification bottom blowing integral air brick |
| CN103014370A (en) * | 2012-12-24 | 2013-04-03 | 中国恩菲工程技术有限公司 | Copper matte bottom blowing converting process and copper matte bottom blowing converting furnace |
| CN207606275U (en) * | 2017-12-25 | 2018-07-13 | 唐山贝斯特高温材料有限公司 | A kind of non-damageable ladle bottom blowing air brick |
| CN209162158U (en) * | 2018-10-30 | 2019-07-26 | 辽宁科技大学 | A kind of bottom blowing copper smelting device supplied using air brick |
-
2018
- 2018-10-30 CN CN201811278177.2A patent/CN109112320A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040007091A1 (en) * | 2000-07-21 | 2004-01-15 | Heinrich Schliefer | Method and device for reducing the oxygen content of a copper melt |
| CN201380284Y (en) * | 2009-03-16 | 2010-01-13 | 上海梅山钢铁股份有限公司 | Double-layered slit permeable brick for bottom-blowing, powder-injecting and dephosphorizing |
| CN102642020A (en) * | 2012-04-17 | 2012-08-22 | 马钢(集团)控股有限公司 | Permeable brick for ladle |
| CN202845767U (en) * | 2012-09-25 | 2013-04-03 | 洛阳利尔耐火材料有限公司 | Steel ladle purification bottom blowing integral air brick |
| CN103014370A (en) * | 2012-12-24 | 2013-04-03 | 中国恩菲工程技术有限公司 | Copper matte bottom blowing converting process and copper matte bottom blowing converting furnace |
| CN207606275U (en) * | 2017-12-25 | 2018-07-13 | 唐山贝斯特高温材料有限公司 | A kind of non-damageable ladle bottom blowing air brick |
| CN209162158U (en) * | 2018-10-30 | 2019-07-26 | 辽宁科技大学 | A kind of bottom blowing copper smelting device supplied using air brick |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111719034A (en) * | 2019-03-21 | 2020-09-29 | 宝山钢铁股份有限公司 | Air blowing opening structure suitable for converter bottom |
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