CN202164341U - Oxygen-enriched bottom-blowing copper smelting furnace - Google Patents
Oxygen-enriched bottom-blowing copper smelting furnace Download PDFInfo
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- CN202164341U CN202164341U CN2011201980189U CN201120198018U CN202164341U CN 202164341 U CN202164341 U CN 202164341U CN 2011201980189 U CN2011201980189 U CN 2011201980189U CN 201120198018 U CN201120198018 U CN 201120198018U CN 202164341 U CN202164341 U CN 202164341U
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Abstract
The utility model proposes an oxygen-enriched bottom-blowing copper smelting furnace which comprises a furnace body and an oxygen lance, wherein a furnace cavity is limited in the furnace body, the furnace body is internally provided with a charging hole, a smoke outlet, a copper matte outlet, a slag outlet and an oxygen lance insertion hole, the oxygen lance insertion hole is formed at the bottom of the furnace body, and the oxygen lance is inserted into the oxygen lance insertion hole for blowing oxygen-enriched air into a copper matter layer in the furnace cavity. According to the oxygen-enriched bottom-blowing copper smelting furnace provided by the embodiment of the utility model, materials are not required to be granulated, so that smelting operation is simplified, and the cost is reduced; most of oxygen reacts with a sulfide in the copper matte layer, a small amount of the oxygen enters a slag layer with reacted air from the copper matte layer, the content of magnetic iron generated in slag is low, the viscosity of the slag is reduced, an isolation layer is difficult to form, and copper matte in the slag can be easily precipitated, so that the flux rate and the slag rate can be reduced by using high iron slag, and the loss of copper in the slag is reduced; meanwhile, formed slag is difficult to generate, and the oxygen-enriched bottom-blowing copper smelting furnace is good in safety. Moreover, mushroom heads are easy to form at the upper end of the oxygen lance so as to protect the oxygen lance, and the oxygen-enriched bottom-blowing copper smelting furnace is long in service life.
Description
Technical field
The utility model relates to a kind of oxygen-enriched bottom-blowing copper smelting furnace.
Background technology
Flash smelting and bath smelting are the pyrometallurgical smelting processes of two big types of widespread uses.Bath smelting is because raw material need not depth drying; Obtained using widely; For example, the Noranda process that exists at present, Wa Niukefufa (the vertical copper water jacket type of furnace), top-submerged lance method (fixed cylinder shaft furnace type) etc., these fused bath smelting methods have relative merits separately.
For example, Noranda process is the reactor drum that adopts a similar pierce smith converter, is provided with an air draft eye at a side of reactor drum, and air or oxygen-rich air blast in the reaction vessel from the eye of wind.But; The problem that Noranda process exists is owing to adopt the single face side-blown; Gas-liquid mixed is inhomogeneous, exists the side-blown of melting dead angle and single face to be prone to again refractory materials in the reaction vessel is particularly produced serious washing away near the part of the eye of wind, has reduced the life-span; Oxygen-rich concentration is difficult to improve, and the utilization ratio of oxygen is low.
Chinese patent CN1072962A (ZL9210699) proposes a kind of bottom blowing copper metallurgy technology and reaction vessel, and wherein said reaction vessel has bellend, and siphon port, slag notch and fume emission mouth all are located at the bellend away from oxygen rifle district.The reason that this reaction vessel is provided with bellend is to reduce the melt degree of depth in oxygen blast district, can reduce the WP of oxygen rifle thus, and improves the melt situation in the reaction vessel, and the promotion copper matte regulus separates with slag, reduces the slag cupric.
The utility model content
A purpose of the utility model is to propose a kind of fusion process and operates, makes oxygen-enriched bottom-blowing copper smelting furnace simple, that the melting effect improves easily.
To achieve these goals, the oxygen-enriched bottom-blowing copper smelting furnace according to the utility model comprises: body of heater be limited with furnace chamber in the said body of heater, and said body of heater has charging opening, exhanst gas outlet, copper matte regulus outlet, slag notch and is formed on the oxygen rifle jack of bottom of furnace body; With the oxygen rifle, said oxygen rifle is inserted in the said oxygen rifle jack oxygen rich gas is blown in the copper matte regulus layer in the said furnace chamber.
According to the oxygen-enriched bottom-blowing copper smelting furnace of the utility model, copper-contained material need not to granulate, and has therefore simplified smelting operation, has reduced cost.The oxygen major part is reacted with sulfide in the copper matte regulus layer; Few from the oxygen that the copper matte regulus layer gets in the slag blanket with reacted gas, the Armco magnetic iron content that generates in the slag is few, and the viscosity of slag reduces; Be not easy to form sealing coat; Copper matte regulus in the slag settles down easily, thereby can adopt high iron slag type, reduction stone rate and slag rate, reduces the loss of copper in the slag.Simultaneously, be not easy to produce foamy slag, security is good, and the easy mushroom head that forms in oxygen rifle upper end, protection oxygen rifle, and the life-span is long.
In a preferred embodiment of the utility model, the upper end of said oxygen rifle is concordant with the interior diapire of said furnace chamber.
In a preferred embodiment of the utility model, the bottom surface of said furnace chamber is concordant.
In a preferred embodiment of the utility model, said body of heater is radial dimension unanimity on the axial direction due of said body of heater that round shape and said furnace chamber have circular cross section and said furnace chamber.
Oxygen-enriched bottom-blowing copper smelting furnace according to the preferred embodiment of the utility model further comprises: bracket; Backing ring, said backing ring are set on the said body of heater and rotatably are supported on the said bracket; Gear ring, said gear ring are set on the said body of heater; And drive unit, institute's drive unit links to each other with said gear ring and is used for driving said body of heater rotation through driving said gear ring rotation.
In a preferred embodiment of the utility model, said charging opening and said exhanst gas outlet are located at the top of said body of heater and spaced apart along the axial direction due of said body of heater, and said slag notch is formed on the end face of said body of heater.
In a preferred embodiment of the utility model, said copper matte regulus exports on the end face that is located at the body of heater relative with slag notch or the bottom, side of body of heater.
In a preferred embodiment of the utility model, further be provided with the burner mouth on the said body of heater and visit the material mouth, wherein in said burner mouth, be provided with burner.
In a preferred embodiment of the utility model, the opening direction of said oxygen rifle jack and the angle between the direction straight down are 0 °≤α≤+ 60 °.
In a preferred embodiment of the utility model, the opening direction of said oxygen rifle jack and the angle between the direction straight down are-60 °≤α≤0 °.
Description of drawings
Above-mentioned and/or additional aspect of the utility model and advantage obviously with are easily understood becoming the description of embodiment from combining figs, wherein:
Fig. 1 is the synoptic diagram according to the oxygen-enriched bottom-blowing copper smelting furnace of an embodiment of the utility model;
Fig. 2 is the body of heater longitudinal sectional view of oxygen-enriched bottom-blowing copper smelting furnace shown in Figure 1;
Fig. 3 is the transverse sectional view of the body of heater of oxygen-enriched bottom-blowing copper smelting furnace shown in Figure 1; With
Fig. 4 is the operational flowchart according to the oxygen-enriched bottom-blowing copper metallurgy of an embodiment of the utility model.
Embodiment
Describe the embodiment of the utility model below in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Be exemplary through the embodiment that is described with reference to the drawings below, only be used to explain the utility model, and can not be interpreted as restriction the utility model.
In the description of the utility model; It will be appreciated that; The orientation of indications such as term " " center ", " vertically ", " laterally ", " on ", D score, " preceding ", " back ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward " or position relation are for based on orientation shown in the drawings or position relation; only be to describe with simplifying for the ease of describing the utility model; rather than the device or the element of indication or hint indication must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction to the utility model.
In the description of the utility model, need to prove that only if clear and definite regulation and qualification are arranged in addition, term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be to be fixedly connected, also can be to removably connect, or connect integratedly; Can be directly to link to each other, also can link to each other indirectly through intermediary, can be the connection of two element internals.For those of ordinary skill in the art, visual particular case is understood the concrete implication of above-mentioned term in the utility model.
The utility model is based on the discovery below the application's the utility model people: Chinese patent CN1072962A has proposed a kind of bottom blowing copper metallurgy reaction vessel, though bellend can be improved melt situation in the reaction vessel, reduces oxygen rifle pressure.Yet owing to be provided with bellend, the molten bath in the reaction vessel shoals, and fusion process is not easy control, and oxygen blows easily to be worn the copper matte regulus layer and get into the slag blanket above the copper matte regulus layer, and the utilization ratio of oxygen is low, and poor stability, the advantage of the bottom-blown smelting that weakened.
Particularly, for above-mentioned bottom blowing copper metallurgy reaction vessel, in fusion process, the oxygen that gets into slag blanket is many, and then FeO in the slag and oxygen reaction generate Fe
3O
4(Armco magnetic iron) because ferromagnetic viscosity is big, thereby forms sealing coat easily between slag and copper matte regulus layer, above melting produces in the slag blanket copper matte regulus drop be not easy to pass sealing coat and be deposited to the copper matte regulus layer, influenced the melting effect, and the increase of the copper content in the slag.And, being easy to generate foamy slag, security reduces.In addition, above-mentioned bottom-blown smelting need be granulated raw material, thus complicated operation, and the concentration of oxygen is restricted, otherwise can reduce life-span of oxygen lance.
Following with reference to the oxygen-enriched bottom-blowing copper smelting furnace of figure 1-3 description according to the utility model embodiment.Shown in Fig. 1-3, comprise body of heater 1 and oxygen rifle 2 according to the oxygen-enriched bottom-blowing copper smelting furnace of an embodiment of the utility model.
Particularly, be limited with furnace chamber Q in the body of heater 1, the molten bath is formed at the bottom of furnace chamber Q, and the molten bath is divided into and is positioned at top slag blanket ZC and is positioned at following copper matte regulus layer LC, and the liquid level of slag blanket is Z, and the liquid level of copper matte regulus layer is L.Body of heater 1 has charging opening 11, exhanst gas outlet 12, copper matte regulus outlet 13, slag notch 14 and is formed on the oxygen rifle jack 15 of the bottom of body of heater 1.
Oxygen rifle 2 is inserted in the oxygen rifle jack 15 oxygen rich gas is blown in the copper matte regulus layer LC in the furnace chamber Q.It is understandable that, in order to guarantee oxygen rifle 2 oxygen rich gas is blown in the copper matte regulus layer LC that it is unsuitable long that oxygen rifle 2 stretches into the length of furnace chamber Q, oxygen rifle 2 inserts the concrete degree of depth of furnace chamber Q and can set according to the parameter (the for example degree of depth in molten bath) of oxygen bottom-blowing.
According to the oxygen-enriched bottom-blowing copper smelting furnace of the utility model embodiment, copper-contained material and flux, fine coal and return dirt and can directly join in the furnace chamber Q from charging opening 11 need not to granulate, and have therefore simplified smelting operation, have reduced cost.
According to the oxygen-enriched bottom-blowing copper smelting furnace of the utility model embodiment, oxygen rifle 2 is blown into oxygen rich gas in copper matte regulus (matte) the layer LC in the furnace chamber Q, in copper matte regulus layer LC: O
2+ FeS+CuS → FeO+CuS+SO
2, wherein move up into slag blanket ZC on the FeO slagging, and most of oxygen becomes sulfurous gas and get into slag blanket ZC, thereby the oxygen that gets into slag blanket ZC is few, has improved the utilization ratio of oxygen.The Armco magnetic iron Fe that FeO among the slag blanket ZC and oxygen generate
3O
4Amount is few, be not easy between slag blanket ZC and copper matte regulus layer LC, to form sealing coat, above melting produces in the slag blanket the easy sedimentation of copper matte regulus drop get in the following copper matte regulus layer LC, and be not easy to produce foamy slag, improved security.In addition, the oxygen-rich air outlet is prone to generate Fe in the upper end of oxygen rifle 2
3O
4And form cellular mushroom head, and protected oxygen rifle 2, prolonged the life-span of oxygen rifle 2.
In some embodiment of the utility model, preferably, the upper end of oxygen rifle 2 is concordant with the interior diapire of furnace chamber Q, can guarantee better that thus oxygen rifle 2 is blown into the sulfide reaction of the oxygen major part of copper matte regulus layer LC at copper matte regulus layer LC and iron.Alternatively, the upper end of oxygen rifle 2 can extend in the furnace chamber Q a little, and for example the 10-20 millimeter exceeds not make too much oxygen get into slag blanket ZC.
As shown in Figure 2, the inner bottom surface of furnace chamber Q is concordant, and in other words, furnace chamber Q does not have the expansion section, and the degree of depth in the molten bath in oxygen blast district increases, and can guarantee better that oxygen rifle 2 is blown into oxygen in the copper matte regulus layer LC, and too much oxygen is got in the slag blanket ZC.
Shown in Fig. 1-3, body of heater 1 is a round shape, and furnace chamber Q has circular cross section, and the radial dimension of furnace chamber Q is consistent on the axial direction due of body of heater 1.Because body of heater 1 is a round shape, therefore is convenient to body of heater 1 and rotates.For this reason, the oxygen-enriched bottom-blowing copper smelting furnace may further include bracket 5, backing ring 3, gear ring 4 and drive unit 6.
Backing ring 3 is set on the body of heater 1 and rotatably is supported on the bracket 5.Gear ring 4 is set on the outside surface of body of heater 1.Drive unit 6 links to each other with gear ring 4 and is used for driving body of heater 1 rotation through driving gear ring 4 rotations.Drive unit 6 for example can comprise motor, and the speed reduction unit that links to each other with motor can be installed gear on the output shaft of speed reduction unit, and gear and gear ring 4 engagements are rotated to drive gear ring 4.Body of heater 1 rotates on bracket 5 under the drive of gear ring 4, because body of heater 1 can rotate, therefore is convenient to change oxygen rifle 2 and other operations.
As illustrated in fig. 1 and 2, in the preferred embodiment of the utility model, charging opening 11 and exhanst gas outlet 12 are located at the top of body of heater 1 and spaced apart along the axial direction due of body of heater 1, and slag notch 14 is formed on the end face of body of heater.
Preferably, copper matte regulus outlet 13 is located on the end face of the body of heater 1 relative with slag notch 14, and alternatively, copper matte regulus outlet 13 can be located at the bottom, side of body of heater 1.
Advantageously,, further be provided with burner mouth 16 on the body of heater 1 and visit material mouth 17 and thermometric pressure taps 18, in burner mouth 16, be provided with the burner (not shown) according to some examples of the utility model.
Preferably, as shown in Figure 3, the opening direction of oxygen rifle jack 15 and the angle between the direction straight down are 0 °≤α≤+ 60 °.Alternatively, the angle between the opening direction of oxygen rifle jack 15 and the direction straight down is-60 °≤α≤0 °.
In other words; According to the oxygen-enriched bottom-blowing copper smelting furnace of the utility model embodiment, " bottom blowing " should be done broad understanding, as long as oxygen rifle 2 is blown into oxygen rich gas in the furnace chamber Q from the bottom of body of heater 1 or the sidepiece of adjacent bottom; All be interpreted as bottom blowing; For example, preferably, the angle between oxygen rifle 2 (being the opening direction of oxygen rifle jack 15) and the direction straight down is understood that " bottom blowing " in-60 °～+ 60 ° scope.
According to the oxygen-enriched bottom-blowing copper smelting furnace of the utility model embodiment, raw material need not to granulate, and has therefore simplified smelting operation, has reduced cost.The oxygen that gets into slag blanket ZC is few, has improved the utilization ratio of oxygen.The Armco magnetic iron Fe that generates among the slag blanket ZC
3O
4Amount is few, be not easy between slag blanket ZC and copper matte regulus layer LC, to form sealing coat, above in the easy sedimentation entering of the copper matte regulus copper matte regulus layer LC in the slag blanket, and be not easy to produce foamy slag, improved security.In addition, owing to export the Fe that generates at oxygen rifle 2
3O
4Form cellular mushroom head in the upper end of oxygen rifle 2, protected oxygen rifle 2, prolonged the life-span of oxygen rifle 2.
Below with reference to figure 4 and the oxygen-enriched bottom-blowing copper metallurgy technology that combines Fig. 1-3 to describe to utilize the oxygen-enriched bottom-blowing copper smelting furnace to carry out.It will be appreciated that.
As shown in Figure 4, at first with copper-contained material and flux and fine coal with return dirt and join in the furnace chamber Q from charging opening 11.Next, utilize oxygen rifle 2 in furnace chamber Q, to be blown into oxygen rich gas carrying out melting, wherein said oxygen rich gas is blown in the copper matte regulus layer in molten bath of furnace chamber Q bottom.At last, discharge copper matte regulus, slag and flue gas respectively from copper matte regulus outlet 13, slag notch 14 and exhanst gas outlet 12.
Above-mentioned oxygen-enriched bottom-blowing copper metallurgy technology, raw material need not to granulate, and have therefore simplified smelting operation, have reduced cost.Because said oxygen rich gas is blown in the copper matte regulus layer in molten bath of furnace chamber Q bottom, the oxygen that gets into slag blanket ZC is few, has improved the utilization ratio of oxygen.The Armco magnetic iron Fe that generates among the slag blanket ZC
3O
4Amount is few, thereby can adopt high iron slag type, reduces stone rate and slag rate, reduces the loss of copper in the slag, has improved smelting efficiency and copper recovery, is not easy to produce foamy slag simultaneously, has improved security.
In some specific embodiments of the utility model, the oxygen concentration of said oxygen rich gas can be 22%-99%, more preferably is 70%-80%.The stokehold pressure of said oxygen rich gas can be 0.25-1.2MPa, more preferably is 0.4-0.6MPa.
Advantageously, according to the embodiment of the utility model, said slag discontinuous discharging.In addition, preferably, the degree of depth of the melt in the furnace chamber Q is consistent, and promptly on the entire cross section of furnace chamber Q, the degree of depth of melt is identical, can avoid the copper matte regulus layer LC the molten bath in to shoal thus, prevents that oxygen from blowing to wear copper matte regulus layer LC entering slag blanket ZC, has improved the melting effect.
In the description of this specification sheets, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means the concrete characteristic, structure, material or the characteristics that combine this embodiment or example to describe and is contained among at least one embodiment or example of the utility model.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete characteristic, structure, material or the characteristics of description can combine with suitable manner in any one or more embodiment or example.
Although illustrated and described the embodiment of the utility model; Those having ordinary skill in the art will appreciate that: under the situation of principle that does not break away from the utility model and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, the scope of the utility model is limited claim and equivalent thereof.
Claims (10)
1. an oxygen-enriched bottom-blowing copper smelting furnace is characterized in that, comprising:
Body of heater is limited with furnace chamber in the said body of heater, and said body of heater has charging opening, exhanst gas outlet, copper matte regulus outlet, slag notch and is formed on the oxygen rifle jack of bottom of furnace body; With
Oxygen rifle, said oxygen rifle are inserted in the said oxygen rifle jack oxygen rich gas is blown in the copper matte regulus layer in the said furnace chamber.
2. oxygen-enriched bottom-blowing copper smelting furnace according to claim 1 is characterized in that, the upper end of said oxygen rifle is concordant with the interior diapire of said furnace chamber.
3. oxygen-enriched bottom-blowing copper smelting furnace according to claim 1 is characterized in that the bottom surface of said furnace chamber is concordant.
4. oxygen-enriched bottom-blowing copper smelting furnace according to claim 1 is characterized in that, said body of heater is radial dimension unanimity on the axial direction due of said body of heater that round shape and said furnace chamber have circular cross section and said furnace chamber.
5. oxygen-enriched bottom-blowing copper smelting furnace according to claim 4 is characterized in that, further comprises:
Bracket;
Backing ring, said backing ring are set on the said body of heater and rotatably are supported on the said bracket;
Gear ring, said gear ring are set on the said body of heater; With
Drive unit, institute's drive unit link to each other with said gear ring and are used for driving said body of heater rotation through driving said gear ring rotation.
6. oxygen-enriched bottom-blowing copper smelting furnace according to claim 1 is characterized in that, said charging opening and said exhanst gas outlet are located at the top of said body of heater and spaced apart along the axial direction due of said body of heater, and said slag notch is formed on the end face of said body of heater.
7. oxygen-enriched bottom-blowing copper smelting furnace according to claim 6 is characterized in that, said copper matte regulus exports on the end face that is located at the body of heater relative with slag notch or the bottom, side of body of heater.
8. oxygen-enriched bottom-blowing copper smelting furnace according to claim 1 is characterized in that, further is provided with the burner mouth on the said body of heater and visits the material mouth, wherein in said burner mouth, is provided with burner.
9. according to each described oxygen-enriched bottom-blowing copper smelting furnace among the claim 1-8, it is characterized in that the opening direction of said oxygen rifle jack and the angle between the direction straight down are 0 °≤α≤+ 60 °.
10. according to each described oxygen-enriched bottom-blowing copper smelting furnace among the claim 1-8, it is characterized in that the opening direction of said oxygen rifle jack and the angle between the direction straight down are-60 °≤α≤0 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201980189U CN202164341U (en) | 2011-06-13 | 2011-06-13 | Oxygen-enriched bottom-blowing copper smelting furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201980189U CN202164341U (en) | 2011-06-13 | 2011-06-13 | Oxygen-enriched bottom-blowing copper smelting furnace |
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|---|---|
| CN202164341U true CN202164341U (en) | 2012-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201980189U Expired - Fee Related CN202164341U (en) | 2011-06-13 | 2011-06-13 | Oxygen-enriched bottom-blowing copper smelting furnace |
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|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103014371A (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 |
-
2011
- 2011-06-13 CN CN2011201980189U patent/CN202164341U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103014371A (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 |
| CN103014370B (en) * | 2012-12-24 | 2014-02-19 | 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 |
| CN103014371B (en) * | 2012-12-24 | 2014-02-19 | 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 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20120314 Termination date: 20130613 |