CN215063666U - Smelting furnace for smelting matte by oxygen top blowing - Google Patents
Smelting furnace for smelting matte by oxygen top blowing Download PDFInfo
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- CN215063666U CN215063666U CN202120535553.2U CN202120535553U CN215063666U CN 215063666 U CN215063666 U CN 215063666U CN 202120535553 U CN202120535553 U CN 202120535553U CN 215063666 U CN215063666 U CN 215063666U
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- 239000001301 oxygen Substances 0.000 title claims abstract description 227
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 227
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 219
- 238000003723 Smelting Methods 0.000 title claims abstract description 63
- 238000007664 blowing Methods 0.000 title description 8
- 239000000498 cooling water Substances 0.000 claims abstract description 26
- 239000000446 fuel Substances 0.000 claims abstract description 24
- 230000009970 fire resistant effect Effects 0.000 claims abstract description 19
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 34
- 239000002893 slag Substances 0.000 claims description 22
- 229910052802 copper Inorganic materials 0.000 claims description 19
- 239000010949 copper Substances 0.000 claims description 19
- 239000000779 smoke Substances 0.000 claims description 13
- 239000003638 chemical reducing agent Substances 0.000 claims description 12
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 6
- 241001062472 Stokellia anisodon Species 0.000 claims description 5
- 239000000395 magnesium oxide Substances 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 239000011449 brick Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 14
- 239000002994 raw material Substances 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000000155 melt Substances 0.000 description 12
- 230000004907 flux Effects 0.000 description 7
- 239000003546 flue gas Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000003245 coal Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 235000019738 Limestone Nutrition 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000006028 limestone Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910052976 metal sulfide Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000009856 non-ferrous metallurgy Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Abstract
The utility model discloses a smelting furnace for smelting matte by oxygen top-blown smelting, which comprises a vertically arranged cylindrical furnace body, wherein the furnace body comprises a furnace shell, the inner side and the bottom of the furnace shell are provided with a fire-resistant layer, and the fire-resistant layer is provided with a cooling water jacket; the top of the furnace shell is provided with oxygen lance holes used for penetrating through oxygen lances, the oxygen lances comprise a first oxygen lance and a second oxygen lance, a fuel pipe is arranged in the first oxygen lance, the first oxygen lance and the second oxygen lance are respectively connected with an oxygen lance machine, and the first oxygen lance and the second oxygen lance are respectively connected with a vertical driving mechanism and a horizontal driving mechanism which can drive the first oxygen lance and the second oxygen lance to move vertically and horizontally. The utility model adopts the vertical cylindrical smelting furnace, which occupies small area and has less capital investment; and the vertical cylindrical smelting furnace adopts an oxygen top-blown smelting technology, and uses high-purity oxygen and fuel for converting, so that higher smelting temperature can be obtained, and the process has strong adaptability of raw materials and can treat various complex-component matte raw materials.
Description
Technical Field
The utility model belongs to the metal smelting field, concretely relates to adopt oxygen top-blown to smelt smelting furnace of matte.
Background
At present, the copper smelting process in the heavy nonferrous metallurgy industry comprises the following steps: copper concentrate → pyro-melting → matte → converting → blister copper → anode refining → copper anode plate. Blowing low-grade matte (40-65%) into crude copper usually by a horizontal converter. The continuous copper smelting process of Mitsubishi uses oxygen-enriched air and limestone flux to smelt matte in Mitsubishi furnace,australia (Ausmelt or ISA furnace) also uses oxygen enrichment (oxygen concentration 80%) to blow copper matte; finland Ottoquep adopts a flash converting technology and a domestic oxygen bottom blowing or side blowing technology, but the processes have the defects of large investment, large smoke amount and the like. Therefore, it is necessary to develop a method for producing SO with high production efficiency, low energy consumption and small amount of flue gas2The concentration is stable and the capital investment is low.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model aims at providing an adopt oxygen top-blown to smelt copper matte's smelting furnace.
The utility model relates to a smelting furnace for smelting matte by oxygen top-blown smelting, which comprises a vertically arranged cylindrical furnace body, wherein the furnace body comprises a furnace shell, the inner side and the bottom of the furnace shell are provided with a fire-resistant layer, and the fire-resistant layer is provided with a cooling water jacket; the top of the furnace shell is provided with oxygen lance holes used for penetrating through oxygen lances, the oxygen lances comprise a first oxygen lance and a second oxygen lance, a fuel pipe is arranged in the first oxygen lance, the first oxygen lance and the second oxygen lance are respectively connected with an oxygen lance machine, the first oxygen lance and the second oxygen lance are respectively connected with a vertical driving mechanism and a horizontal driving mechanism which can drive the first oxygen lance and the second oxygen lance to move vertically and horizontally, and the first oxygen lance and the second oxygen lance can be switched into the furnace shell under the driving of the vertical driving mechanism and the horizontal driving mechanism; the furnace shell is characterized in that the top of the furnace shell is provided with a smoke exhaust port and a charging port, the lower part of the furnace shell is provided with a furnace slag discharge port and a crude copper discharge port, and the furnace shell is arranged on a furnace body seat.
The first oxygen lance and the second oxygen lance are cylindrical multi-layer barrel structures, the center of the first oxygen lance is a fuel pipe, the outside of the fuel pipe is an oxygen pipe, and the outside of the oxygen pipe is sequentially provided with a cooling water inlet pipe and a cooling water outlet pipe; the center of the second oxygen gun is an oxygen pipe, and a cooling water inlet pipe and a cooling water outlet pipe are sequentially arranged outside the oxygen pipe.
The vertical driving mechanism comprises an oxygen lance trolley arranged in the oxygen lance machine, an oxygen lance slideway for the oxygen lance trolley to slide along the vertical direction is arranged on the oxygen lance machine, and the oxygen lance is fixed on the oxygen lance trolley; the oxygen lance lifting device is characterized in that a balance weight sliding frame is arranged between the two oxygen lance machines, a balance weight block and a balance weight slide way used for vertical sliding of the balance weight block are arranged on the balance weight sliding frame, a bracket is arranged at the top of the oxygen lance machine, a transmission chain wheel is arranged on the left side of the bracket, an oxygen lance trolley, the transmission chain wheel and the balance weight block are connected through a chain, an oxygen lance driving motor and an oxygen lance speed reducer used for lifting and descending are arranged on the right side of the bracket, and an output shaft of the oxygen lance speed reducer is connected with the transmission chain wheel.
The cooling water jacket comprises an annular flat cooling water jacket arranged at the upper part of the refractory layer and a cylindrical vertical cooling water jacket arranged at the middle lower part of the refractory layer.
The fire-resistant layer is made of chrome magnesia bricks.
The fire-resistant layer at the bottom of the furnace body is in an inwards concave inverted arch shape, so that the fire-resistant layer is prevented from floating when being heated.
The utility model discloses a method for smelting copper matte by oxygen top-blown smelting adopts foretell smelting furnace to accomplish, including following step:
(1) baking the furnace body within 8-12 hours to raise the temperature to 300-400 ℃, and then continuously baking for 25-28 hours at the temperature;
(2) after baking, heating the furnace body to 500-600 ℃ within 15-18 hours by using lump coal and oxygen, and continuously baking for 20-25 hours at the temperature;
(3) starting a horizontal driving mechanism, horizontally moving a first oxygen lance to the position above an oxygen lance hole, starting a vertical driving mechanism to stretch the first oxygen lance into a furnace body, feeding oxygen and fuel through the first oxygen lance to continuously bake the furnace body, and controlling the volume-mass ratio of the oxygen to the fuel to be 2-2.5 m3Heating the furnace temperature to 750-850 ℃ within 8-12 hours, and continuously baking for 18-22 hours at the constant temperature; then, heating the furnace temperature to a smelting temperature of 1150-1250 ℃ within 8-12 hours, continuously baking for 7-9 hours at the constant temperature, and adding slag to melt the slag in the furnace to form an initial molten pool;
(4) when the height of a molten pool in the furnace reaches 500mm, a gun head of a first oxygen gun is placed at a position 300-500 mm away from the surface of the molten pool, and matte and limestone flux are added from a feeding hole for smelting;
(5) and after the smelting process is normal, the horizontally moving oxygen lance machine is replaced by a second oxygen lance without a fuel pipe for smelting, the second oxygen lance only feeds oxygen, when the melt in the furnace reaches the required limit, the blister copper is discharged from a blister copper discharge port, the slag is discharged from a slag discharge port, and the flue gas is continuously discharged from a smoke discharge port.
In the smelting process, a spray head of the oxygen lance is positioned 0-1000 mm above the surface of the melt (the melt is in a static condition). The matte is a powder or a block material with the water content of 8-15%. The concentration of oxygen is 90-100%, the pressure is 0.9-1.2 MPa, the oxygen lance head adopts a Laval oxygen nozzle, oxygen is discharged at a speed higher than the sound speed, so that the melt is stirred and stirred, and the matte added into the furnace is rapidly melted by the stirred melt.
The melted copper matte and the flux are continuously added for reaction, and the melting, slagging and converting of the copper matte are very quick. The reaction atmosphere can be adjusted by adjusting the ratio of oxygen and fuel according to the requirements of the smelting process, and the melt is violently stirred due to the strong stirring of the oxygen inflow gas flow, so that the gas-solid-liquid three phases are fully contacted, the oxidation of impurities is completed, and the impurities are slagging with the added flux. The materials react to generate slag and blister copper, simultaneously emit a large amount of heat, maintain normal smelting temperature, are divided into an upper layer and a lower layer due to different specific gravity of the slag and the blister copper, valuable metals are gradually enriched, and metal or metal sulfide and furnace slag are continuously or discontinuously emitted, and flue gas is continuously discharged from a smoke outlet at the top of the furnace.
The utility model discloses compare in prior art's beneficial effect:
1. the utility model adopts a vertical cylindrical smelting furnace, which occupies small area and has less capital investment; the utility model adopts the oxygen top-blown smelting technology to the vertical cylindrical smelting furnace, uses high-purity oxygen and fuel to carry out blowing, and can obtain higher smelting temperature, so the process has strong adaptability of raw materials and can process various matte raw materials with complex components; high oxygen purity, low smoke amount and smoke dust rate, and low investment of a smoke purification system.
2. The utility model is provided with a vertical driving mechanism and a horizontal driving mechanism, and a first oxygen lance provided with a fuel pipe and a second oxygen lance not provided with a fuel pipe are switched into a furnace shell under the driving of the horizontal driving mechanism, so that the shutdown time can be reduced, the temperature in the furnace is kept stable, and the operation rate of the smelting furnace is improved; the oxygen lance can move in the vertical direction through the vertical driving mechanism, so that the oxygen lance is conveniently controlled to be at a proper height from the melt.
3. The utility model discloses a high-purity oxygen is smelted, and the matte raw materials need not the fine grinding, and the broken granule that reaches 10~40mm of matte raw materials just can directly go into the stove, or the material that contains water 8~10% also can directly go into the stove. Therefore, the whole equipment is simple and easy to maintain, and the investment of equipment facilities is reduced.
4. The utility model controls the oxygen lance to be above the melt surface, and the service life of the oxygen lance is long. The service life of the oxygen lance of the domestic Osmant smelting furnace is about 15-20 days, the service life of the blowing oxygen lance is 3-5 days, and the service life of the oxygen lance for top blowing smelting by adopting oxygen can reach more than 30 days.
5. The utility model discloses set up cooling jacket for the life-span of furnace body can reach 1.5 years.
Drawings
Fig. 1 is a front view of the present invention;
fig. 2 is a left side view of the present invention.
In the figure: 1-furnace shell, 2-fire-resistant layer, 3-first oxygen lance, 4-second oxygen lance, 5-oxygen lance hole, 6-oxygen lance machine, 7-oxygen lance trolley, 8-oxygen lance slideway, 9-counterweight block, 10-bracket, 11-transmission chain wheel, 12-chain, 13-oxygen lance driving motor, 14-oxygen lance speed reducer, 15-oxygen lance machine driving frame, 16-driving motor, 17-oxygen lance machine speed reducer, 18-pulley, 19-walking track, 20-riding wheel, 21-smoke outlet, 22-charging opening, 23-blister copper discharge opening, 24-slag discharge opening, 25-furnace body seat, 26-liquid blister copper, 27-slag and 28-cooling water jacket.
Detailed Description
The following describes the present invention with reference to the accompanying drawings.
As shown in fig. 1-2, a smelting furnace for smelting matte by top-blown oxygen comprises a vertically arranged cylindrical furnace body, wherein the furnace body comprises a furnace shell 1, and the furnace shell 1 is formed by rolling 20g of boiler steel plates. The inner side and the bottom of the furnace shell 1 are provided with a fire-resistant layer 2, the fire-resistant layer 2 is composed of chrome magnesia bricks, and the fire-resistant layer 2 at the bottom of the furnace body is in an inwards concave inverted arch shape to prevent the fire-resistant layer from floating when being heated. The refractory layer 2 is provided with a cooling water jacket 28, and the cooling water jacket 28 comprises an annular flat cooling water jacket arranged at the upper part of the refractory layer 2 and a cylindrical vertical cooling water jacket arranged at the middle lower part of the refractory layer. The top of the furnace shell 1 is provided with an oxygen lance hole 5 for passing through an oxygen lance, the oxygen lance comprises a first oxygen lance 3 and a second oxygen lance 4, the first oxygen lance 3 and the second oxygen lance 4 are cylindrical multi-layer cylinder structures, the center of the first oxygen lance 3 is a fuel pipe which mainly uses liquid (heavy oil and diesel oil) or gas fuel (natural gas), the outside of the fuel pipe is an oxygen pipe, and the outside of the oxygen pipe is sequentially provided with a cooling water inlet pipe and a cooling water outlet pipe; the center of the second oxygen gun 4 is an oxygen pipe, and a cooling water inlet pipe and a cooling water outlet pipe are sequentially arranged outside the oxygen pipe.
The first oxygen gun 3 and the second oxygen gun 4 are respectively connected with an oxygen gun machine 5, the first oxygen gun 3 and the second oxygen gun 4 are respectively connected with a vertical driving mechanism and a horizontal driving mechanism which can drive the first oxygen gun 3 and the second oxygen gun 4 to move vertically and horizontally, and the first oxygen gun 3 and the second oxygen gun 4 can be switched into the furnace shell 1 under the driving of the vertical driving mechanism and the horizontal driving mechanism.
The top of the furnace shell 1 is provided with a smoke outlet 21 and a charging opening 22, the lower part of the furnace shell 1 is provided with a slag discharge opening 24 and a blister copper discharge opening 23, liquid blister copper 26 generated by reaction in the furnace body is deposited on the furnace bottom due to heavier specific gravity, generated slag 27 floats on the upper part of a blister copper layer due to heavier specific gravity, blister copper is discharged from the blister copper discharge opening 23, the slag 27 is discharged from the slag discharge opening 24, and flue gas is continuously discharged from the smoke outlet 21. The furnace shell 1 is arranged on a furnace body seat 25.
The vertical driving mechanism comprises an oxygen lance trolley 7 arranged in the oxygen lance machine 6, an oxygen lance slideway 8 for the oxygen lance trolley 7 to slide along the vertical direction is arranged on the oxygen lance machine 6, and the oxygen lance is fixed on the oxygen lance trolley 7; be equipped with counter weight balladeur train 8 between the oxygen rifle bolt 6, be equipped with the balancing weight 9 on the balancing weight balladeur train 8 and be used for the vertical gliding counter weight slide of balancing weight 9 piece, the oxygen rifle bolt 6 top is equipped with bracket 10, and bracket 10 left side is equipped with drive sprocket 11, and oxygen rifle dolly 7, drive sprocket 11 and balancing weight 9 pass through chain 12 and connect, and bracket 10 right side is equipped with oxygen rifle driving motor 13 and oxygen rifle speed reducer 14, and oxygen rifle speed reducer 14 output shaft is connected with drive sprocket 11. When the oxygen lance needs to be lifted or lowered, the oxygen lance driving motor 13 is started, the oxygen lance driving motor 13 drives the oxygen lance speed reducer 14 to enable the oxygen lance trolley 7 and the balancing weight 9 to slide up and down on respective slideways through the rotating chain wheel 11, and lifting or lowering of the oxygen lance is guaranteed.
The horizontal driving mechanism comprises an oxygen lance driving frame 15 arranged on the right side of the top of the oxygen lance machine 6, a driving motor 16 and an oxygen lance speed reducer 17 are arranged in the oxygen lance driving frame 15, an output shaft of the oxygen lance speed reducer 17 is connected with a pulley 18, the pulley 18 is fixed on the oxygen lance machine 6, and a walking track 19 is arranged at the bottom of the pulley 18. When the oxygen lance needs to be switched, the driving motor 16 is started, the driving motor 16 drives the oxygen lance speed reducer 17, and then the pulley 18 drives the oxygen lance machine 6 to horizontally and transversely move on the walking track 19, so that the purpose of switching the oxygen lance is achieved. The bottom of the walking track 19 is provided with a riding wheel 20 which plays a supporting role for the walking track 19 and ensures the oxygen gun machine 6 to move transversely and stably. The right side of the oxygen gun machine 6 is also provided with a riding wheel 20 to ensure the verticality of the oxygen gun machine 6 during moving.
The utility model relates to an adopt oxygen top-blown to smelt method of smelting matte adopts above-mentioned smelting furnace to accomplish, including following step:
(1) baking the furnace body to 300-400 ℃ within 10 hours by using wood, and then continuously baking for 26 hours at the temperature so as to dry free water in the fire-resistant layer and the hearth space, so that water forms water vapor to be evaporated firstly when the temperature of the fire-resistant layer is higher than 100 ℃;
(2) after the baking is finished, the furnace body is heated to 500-600 ℃ within 26 hours by using lump coal and oxygen, and is continuously baked for 22 hours at the temperature, mainly for baking the bottom of the furnace body to enable SiO of the fire-resistant layer2Crystal form transformation occurs at 270-573 ℃, and the refractoriness of the fire-resistant layer is improved. In the step, lump coal is added into the furnace body as fuel, any one oxygen lance is placed in the furnace body at a position 2m away from the furnace bottom, oxygen is blown into the furnace body to combust the lump coal, the furnace temperature is easy to control, and the fuel consumption is low.
(3) Starting a horizontal driving mechanism, horizontally moving a first oxygen lance 3 to the position above an oxygen lance hole 5, then starting a vertical driving mechanism to stretch the first oxygen lance 3 into a furnace body, sending oxygen and fuel into the furnace body through the first oxygen lance 3 to continuously bake the furnace body, and controlling the volume of the oxygen and the fuelThe mass ratio of the components is 2-2.5 m3The furnace temperature is increased to 800 ℃ within 10 hours, and the furnace is continuously baked for 20 hours at the constant temperature, so that the MgO in the refractory layer generates crystal form transformation at 800 ℃, and the refractoriness of the refractory layer is improved; then raising the furnace temperature to the smelting temperature of 1200 ℃ within 10 hours, continuously baking for 8 hours at the constant temperature, and adding slag to melt the slag in the furnace to form an initial molten pool; the temperature must be strictly controlled during the baking time, and if the temperature rises too fast, the refractory layer in the furnace is broken, and the service life of the furnace is reduced.
(4) When the height of a molten pool in the furnace reaches 500mm, a gun head of a first oxygen gun is placed downwards to a position 300-500 mm away from the surface of the molten pool, oxygen and fuel are fed into the furnace body, and matte and limestone flux are added from a feed inlet for smelting;
(5) when the smelting process is normal, the horizontally moving oxygen lance machine 6 is replaced by the second oxygen lance 4 without a fuel pipe for smelting, the second oxygen lance 4 only feeds oxygen, when the melt in the furnace reaches the required limit, the blister copper is discharged from a blister copper discharge port 23, the slag is discharged from a slag discharge port 24, and the flue gas is continuously discharged from a smoke discharge port 21.
In the smelting process, a spray head of the oxygen lance is positioned 0-1000 mm above the surface of the melt (the melt is in a static condition). The matte is a powder or a block material with the water content of 8-15%. The concentration of oxygen is 90-100%, the pressure is 0.9-1.2 MPa, the oxygen lance head adopts a Laval oxygen nozzle, oxygen is discharged at a speed higher than the sound speed, so that the melt is stirred and stirred, and the matte added into the furnace is rapidly melted by the stirred melt.
The melted copper matte and the flux are continuously added for reaction, and the melting, slagging and converting of the copper matte are very quick. The reaction atmosphere can be adjusted by adjusting the ratio of oxygen and fuel according to the requirements of the smelting process, and the melt is violently stirred due to the strong stirring of the oxygen inflow gas flow, so that the gas-solid-liquid three phases are fully contacted, the oxidation of impurities is completed, and the impurities are slagging with the added flux. The materials react to generate slag and blister copper, simultaneously emit a large amount of heat, maintain normal smelting temperature, are divided into an upper layer and a lower layer due to different specific gravity of the slag and the blister copper, valuable metals are gradually enriched, and metal or metal sulfide and furnace slag are continuously or discontinuously emitted, and flue gas is continuously discharged from a smoke outlet at the top of the furnace.
Claims (6)
1. The utility model provides an adopt oxygen top-blown to smelt smelting furnace of matte which characterized in that: the furnace comprises a vertically arranged cylindrical furnace body, wherein the furnace body comprises a furnace shell, the inner side and the bottom of the furnace shell are provided with a fire-resistant layer, and the fire-resistant layer is provided with a cooling water jacket; the top of the furnace shell is provided with oxygen lance holes used for penetrating through oxygen lances, the oxygen lances comprise a first oxygen lance and a second oxygen lance, a fuel pipe is arranged in the first oxygen lance, the first oxygen lance and the second oxygen lance are respectively connected with an oxygen lance machine, the first oxygen lance and the second oxygen lance are respectively connected with a vertical driving mechanism and a horizontal driving mechanism which can drive the first oxygen lance and the second oxygen lance to move vertically and horizontally, and the first oxygen lance and the second oxygen lance can be switched into the furnace shell under the driving of the vertical driving mechanism and the horizontal driving mechanism; the furnace shell is characterized in that the top of the furnace shell is provided with a smoke exhaust port and a charging port, the lower part of the furnace shell is provided with a furnace slag discharge port and a crude copper discharge port, and the furnace shell is arranged on a furnace body seat.
2. The smelting furnace for smelting copper matte by oxygen top-blown smelting according to claim 1, wherein: the first oxygen lance and the second oxygen lance are cylindrical multi-layer barrel structures, the center of the first oxygen lance is a fuel pipe, the outside of the fuel pipe is an oxygen pipe, and the outside of the oxygen pipe is sequentially provided with a cooling water inlet pipe and a cooling water outlet pipe; the center of the second oxygen gun is an oxygen pipe, and a cooling water inlet pipe and a cooling water outlet pipe are sequentially arranged outside the oxygen pipe.
3. The smelting furnace for smelting copper matte by oxygen top-blown smelting according to claim 1, wherein: the vertical driving mechanism comprises an oxygen lance trolley arranged in the oxygen lance machine, an oxygen lance slideway for the oxygen lance trolley to slide along the vertical direction is arranged on the oxygen lance machine, and the oxygen lance is fixed on the oxygen lance trolley; the oxygen lance lifting device is characterized in that a balance weight sliding frame is arranged between the two oxygen lance machines, a balance weight block and a balance weight slide way used for vertical sliding of the balance weight block are arranged on the balance weight sliding frame, a bracket is arranged at the top of the oxygen lance machine, a transmission chain wheel is arranged on the left side of the bracket, an oxygen lance trolley, the transmission chain wheel and the balance weight block are connected through a chain, an oxygen lance driving motor and an oxygen lance speed reducer used for lifting and descending are arranged on the right side of the bracket, and an output shaft of the oxygen lance speed reducer is connected with the transmission chain wheel.
4. The smelting furnace for smelting copper matte by oxygen top-blown smelting according to claim 1, wherein: the cooling water jacket comprises an annular flat cooling water jacket arranged at the upper part of the refractory layer and a cylindrical vertical cooling water jacket arranged at the middle lower part of the refractory layer.
5. The smelting furnace for smelting copper matte by oxygen top-blown smelting according to claim 1, wherein: the fire-resistant layer is made of chrome magnesia bricks.
6. The smelting furnace for smelting copper matte by oxygen top-blown smelting according to claim 1, wherein: the fire-resistant layer at the bottom of the furnace body is in an inwards concave inverted arch shape.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112880400A (en) * | 2021-03-15 | 2021-06-01 | 金川集团股份有限公司 | Smelting furnace and smelting method for smelting matte by adopting oxygen top blowing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112880400A (en) * | 2021-03-15 | 2021-06-01 | 金川集团股份有限公司 | Smelting furnace and smelting method for smelting matte by adopting oxygen top blowing |
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Effective date of registration: 20240125 Address after: 737199 No. 2 Jianshe Road, Jinchuan District, Jinchang City, Gansu Province (east of Beijing Road, west of Heya Road, south of Guiyang Road) Patentee after: Jinchuan Group Copper Gui Co.,Ltd. Country or region after: China Address before: No.98, Jinchuan Road, Jinchuan District, Jinchang City, Gansu Province 737100 Patentee before: JINCHUAN GROUP Co.,Ltd. Country or region before: China |