CN202164337U - Oxygen-enriched bottom-blowing melting furnace for producing sulphonium - Google Patents
Oxygen-enriched bottom-blowing melting furnace for producing sulphonium Download PDFInfo
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- CN202164337U CN202164337U CN2011201992148U CN201120199214U CN202164337U CN 202164337 U CN202164337 U CN 202164337U CN 2011201992148 U CN2011201992148 U CN 2011201992148U CN 201120199214 U CN201120199214 U CN 201120199214U CN 202164337 U CN202164337 U CN 202164337U
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Abstract
The utility model provides an oxygen-enriched bottom-blowing melting furnace for producing sulphonium. The melting furnace comprises a furnace body and an oxygen lance, wherein a furnace chamber is limited in the furnace body; the furnace body is provided with a charge opening, a fume outlet, a sulphonium discharge opening, a residue discharge opening, and an oxygen lance insertion hole formed at the bottom of the furnace body; and the oxygen lance is inserted into the oxygen lance insertion hole so as to blow an oxygen-enriched gas into a sulphonium layer in the furnace chamber. Through the adoption of the oxygen-enriched bottom-blowing melting furnace, material is not required to be pelletized, so that the smelting operation is simplified, and the cost is reduced. As a large part of oxygen reacts with sulfide in the sulphonium layer, the quantity of oxygen entering a residue layer with the reacted gas is small, the quantity of magnetic iron generated in residue is small, the viscosity of residue is reduced, an insulating layer is not easy to form, and sulphonium in the residue settles easily settles. Therefore, high iron slag-type can be adopted to reduce fluxing agent rate and slag rate and reduce metal loss in the slag. Meanwhile, foaming slag is not easy to produce, so that the safety is high; and as a mushroom head is easy to form at the upper end of the oxygen lance, the oxygen lance is protected, and the service life of the oxygen lance is long.
Description
Technical field
The utility model relates to a kind of oxygen-enriched bottom-blowing matte smelting stove, especially relates to a kind of oxygen bottom blowing matte smelting stove that is suitable for melting copper, nickel (cobalt).
Background technology
Flash smelting and bath smelting are the pyrometallurgical smelting methods of two big types of widespread uses, for example are used for copper smelting, nickel (cobalt) etc.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 matte smelting stove simple, that the melting effect improves easily.
To achieve these goals, the oxygen-enriched bottom-blowing matte smelting stove 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, goes out sulfonium mouth, 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 sulfonium layer in the said furnace chamber.
According to the oxygen-enriched bottom-blowing matte smelting stove of the utility model, material need not to granulate, and has therefore simplified smelting operation, has reduced cost.The oxygen major part is reacted with sulfide in the sulfonium layer; Few from the oxygen that the sulfonium 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; Sulfonium in the slag settles down easily, thereby can adopt high iron slag type, reduction stone rate and slag rate, reduces the loss of metal in the dreg.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 matte smelting stove 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, saidly go out on the end face that the sulfonium mouth 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 matte smelting stove of an embodiment of the utility model;
Fig. 2 is the body of heater longitudinal sectional view of oxygen-enriched bottom-blowing matte smelting stove shown in Figure 1;
Fig. 3 is the transverse sectional view of the body of heater of oxygen-enriched bottom-blowing matte smelting stove shown in Figure 1; With
Fig. 4 is the oxygen-enriched bottom-blowing matte smelting furnace operating schema according to 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, top copper matte regulus is not easy to descend, and has influenced the melting effect, and the copper content in the slag increases.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.
Oxygen-enriched bottom-blowing matte smelting stove according to the utility model embodiment is described with reference to the drawings below.For convenience, be that example is described with melting copper below.It is understandable that the utility model is not limited to this, be applicable to that according to the oxygen-enriched bottom-blowing matte smelting stove of the utility model embodiment melting can make any suitable metal of sulfonium, for example nickel, cobalt etc.
With reference to figure 1-3 the oxygen-enriched bottom-blowing matte smelting stove according to the utility model embodiment is described.Shown in Fig. 1-3, comprise body of heater 1 and oxygen rifle 2 according to the oxygen-enriched bottom-blowing matte smelting stove 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, goes out sulfonium mouth 13, slag notch 14 and be 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 matte smelting stove 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 matte smelting stove 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, is not easy between slag blanket ZC and copper matte regulus layer LC, to form sealing coat, and top copper matte regulus falls to getting in the copper matte regulus layer LC easily, and is not easy to produce foamy slag, has 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, oxygen-enriched bottom-blowing matte smelting stove 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, go out on the end face that sulfonium mouth 13 is located at the body of heater 1 relative with slag notch 14, alternatively, go out the bottom, side that sulfonium mouth 13 can be located at 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 matte smelting stove 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 matte smelting stove 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, is not easy between slag blanket ZC and copper matte regulus layer LC, to form sealing coat, and top copper matte regulus falls to getting in the copper matte regulus layer LC easily, and is not easy to produce foamy slag, has improved security.Because Fe in the 2 outlet generations of oxygen rifle
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 matte smelting technology that combines Fig. 1-3 to describe to utilize oxygen-enriched bottom-blowing matte smelting stove to carry out.As shown in Figure 4, at first furnace charge (for example copper-contained material, flux, fine coal and return dirt) is joined 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 sulfonium layer in molten bath of furnace chamber Q bottom.At last, discharge sulfonium, slag and flue gas respectively from going out sulfonium mouth 13, slag notch 14 and exhanst gas outlet 12.
Above-mentioned oxygen-enriched bottom-blowing matte smelting 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 sulfonium 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 metal in the dreg, has improved smelting efficiency and metal recovery rate, 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 sulfonium layer LC the molten bath in to shoal thus, prevents that oxygen from blowing to wear sulfonium 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 matte smelting stove 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, goes out sulfonium mouth, 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 sulfonium layer in the said furnace chamber.
2. oxygen-enriched bottom-blowing matte smelting stove 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 matte smelting stove according to claim 1 is characterized in that the bottom surface of said furnace chamber is concordant.
4. oxygen-enriched bottom-blowing matte smelting stove 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 matte smelting stove 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 matte smelting stove 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 matte smelting stove according to claim 6 is characterized in that, saidly goes out on the end face that the sulfonium mouth is located at the body of heater relative with slag notch or the bottom, side of body of heater.
8. oxygen-enriched bottom-blowing matte smelting stove 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 matte smelting stove 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 matte smelting stove 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 |
|---|---|---|---|
| CN2011201992148U CN202164337U (en) | 2011-06-13 | 2011-06-13 | Oxygen-enriched bottom-blowing melting furnace for producing sulphonium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201992148U CN202164337U (en) | 2011-06-13 | 2011-06-13 | Oxygen-enriched bottom-blowing melting furnace for producing sulphonium |
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| Publication Number | Publication Date |
|---|---|
| CN202164337U true CN202164337U (en) | 2012-03-14 |
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ID=45800177
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201992148U Expired - Lifetime CN202164337U (en) | 2011-06-13 | 2011-06-13 | Oxygen-enriched bottom-blowing melting furnace for producing sulphonium |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706146A (en) * | 2012-06-18 | 2012-10-03 | 中国恩菲工程技术有限公司 | Bottom-blowing smelting equipment |
| 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 |
| 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 |
| CN104018007A (en) * | 2013-02-28 | 2014-09-03 | 中国恩菲工程技术有限公司 | Nickel matte bottom-blowing refining process and nickel matte bottom-blowing refining device |
| CN107460340A (en) * | 2017-07-31 | 2017-12-12 | 河南豫光金铅股份有限公司 | A kind of quick blow-in method of copper bottom-blown smelting stove |
-
2011
- 2011-06-13 CN CN2011201992148U patent/CN202164337U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706146A (en) * | 2012-06-18 | 2012-10-03 | 中国恩菲工程技术有限公司 | Bottom-blowing smelting equipment |
| CN102706146B (en) * | 2012-06-18 | 2015-06-03 | 中国恩菲工程技术有限公司 | Bottom-blowing smelting equipment |
| 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 |
| 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 |
| 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 |
| CN104018007A (en) * | 2013-02-28 | 2014-09-03 | 中国恩菲工程技术有限公司 | Nickel matte bottom-blowing refining process and nickel matte bottom-blowing refining device |
| CN104018007B (en) * | 2013-02-28 | 2018-01-16 | 中国恩菲工程技术有限公司 | Nickel matte bottom blowing converting process and nickel matte bottom blowing blowing device |
| CN107460340A (en) * | 2017-07-31 | 2017-12-12 | 河南豫光金铅股份有限公司 | A kind of quick blow-in method of copper bottom-blown smelting stove |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120314 |