CN105907987A - Smelting furnace and copper matte preparation method using same - Google Patents
Smelting furnace and copper matte preparation method using same Download PDFInfo
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- CN105907987A CN105907987A CN201610264237.XA CN201610264237A CN105907987A CN 105907987 A CN105907987 A CN 105907987A CN 201610264237 A CN201610264237 A CN 201610264237A CN 105907987 A CN105907987 A CN 105907987A
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- 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
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Abstract
The invention discloses a smelting furnace and a copper matte preparation method using the smelting furnace. The smelting furnace comprises a smelting furnace bottom, a smelting flue and a blow flue, wherein the smelting furnace bottom is provided with a material inlet, a first air inlet, a second air inlet, a third air inlet, a flux inlet, a smelting slag outlet, a blow slag outlet and a melt outlet; a slag basin zone, a smelting zone, a blow zone and a settling zone are formed inside the smelting furnace bottom in the horizontal direction; a smelting reaction zone and a smelting basin zone are formed in the smelting zone from top to bottom; a blow reaction zone and a blow basin zone are formed in the blow zone from top to bottom; the smelting basin zone communicates with the slag basin zone and the blow basin zone; the blow basin zone communicates with the settling zone; the smelting flue communicates with the top end of the smelting zone; and the blow flue communicates with the top end of the blow zone. The smelting furnace is compact in structure, small in occupied area, and particularly suitable for continuous treatment of copper ore concentrates. Obtained copper matte has a high grade and copper content in furnace slag is relatively low.
Description
Technical field
The invention belongs to metallurgical technology field, specifically, the present invention relates to a kind of smelting furnace and use this smelting furnace to prepare
The method of copper matte regulus.
Background technology
Current process copper concentrate obtains the high-grade copper matte regulus of more than 75% and typically uses flash smelting or the method for bottom-blown smelting or molten
Refining and the separate method that blows (being i.e. respectively adopted smelting furnace and converting furnace), but in flash smelting or bottom-blown smelting method: dodge
Fast thawing refining investment height, is suitable for large-scale production, and while the high-grade copper matte regulus of output to more than 75%, smelting slag cupric is typically wanted
To about 3%；Although and bottom-blown smelting is invested lower slightly, but equally existing the problem that Copper in Slag is high, typically will be to 3～5%.Should
Although method can obtain high-grade copper matte regulus in a metallurgical furnace, but owing to slag cupric is high, reduces metal straight yield,
Add production cost.And in melting and the separate method of blowing, the first more low-grade matte of output in smelting furnace,
Then in converting furnace, continue blowing output high-grade copper matte regulus.The method Copper in Slag is relatively low, but due to two kinds of metallurgical furnaces of needs,
Increase is all had for equipment investment and construction investment；And to there is the transshipment problem of melt in converting process in melting, adds
The probability of flue gas loss, in particular by when bessemerizing, in melt transport process, environment is caused greatly by the flue gas of loss
Impact.
Therefore, the equipment that existing process copper concentrate obtains high-grade copper matte regulus is further improved.
Summary of the invention
It is contemplated that one of technical problem solved the most to a certain extent in correlation technique.To this end, the one of the present invention
Purpose is a kind of method proposing smelting furnace and using this smelting furnace to prepare copper matte regulus, this smelting furnace compact conformation, takes up an area face
Long-pending little, such that it is able to significantly reduce cost of investment, and this smelting furnace is particularly suited for continuous processing copper concentrate, obtained copper
Sulfonium has higher grade, and in slag, copper content is relatively low.
In one aspect of the invention, the present invention proposes a kind of smelting furnace.According to embodiments of the invention, described smelting furnace
Including:
At the bottom of smelting furnace, at the bottom of described smelting furnace in limit reaction compartment, described reaction compartment sequentially forms in the horizontal direction
Slag bath district, smelting zone, blowing district and settling section, described smelting zone sequentially forms melting reaction district and melting molten bath from top to bottom
District, described blowing district sequentially forms blowing reaction zone and blowing molten bath district from top to bottom, and described smelting zone leads to described slag bath district
Cross the first partition wall spaced apart, and described melting molten bath district is connected with described slag bath district, described smelting zone and described blowing district
Spaced apart by the second partition wall, and described melting molten bath district is connected with described blowing molten bath district, and described blowing district is with described
Settling section is spaced apart by the 3rd partition wall, and described blowing molten bath district is connected with described settling section, wherein, and described first
Partition wall is more than described second partition wall distance to the bottom at the bottom of described smelting furnace to the distance of the bottom at the bottom of described smelting furnace；
Melting flue, described melting flue is connected with the top of described smelting zone；
Blowing flue, described blowing flue is connected with the top in described blowing district；
Material inlet, described material inlet is located at the top of described smelting zone；
First air port, described first air port is located on the sidewall in described melting reaction district；
Second air port, described second air port is located on the sidewall in described melting reaction district, and in the vertical direction, and described
Two air ports are positioned at the top in described first air port；
3rd air port, described 3rd air port is located on the sidewall of described blowing reaction zone；
Flux entrance, described flux entrance is located at the top in described blowing district；
Smelting slag exports, and the outlet of described smelting slag is located on the sidewall in described slag bath district；
Blowing slag outlet, the outlet of described blowing slag is located on the sidewall of described settling section；And
Melt outlet, described melt outlet is located on the sidewall of described settling section.
Thus, smelting furnace compact conformation according to embodiments of the present invention, floor space is little, invests into such that it is able to significantly reduce
Originally, and this smelting furnace is particularly suited for continuous processing copper concentrate, and obtained copper matte regulus has higher grade, and in slag
Copper content is relatively low.
It addition, smelting furnace according to the above embodiment of the present invention can also have a following additional technical characteristic:
In some embodiments of the invention, described smelting furnace includes multiple material inlet, and the plurality of material inlet is along level
Interval, direction is located at the top of described smelting zone.Thus, it is possible to significantly improve equipment disposal ability.
In some embodiments of the invention, described smelting furnace includes multiple first air port, and the plurality of first air port is along level
Interval, direction is located on the sidewall in described melting reaction district.Thus, it is possible to significantly improve smelting efficiency.
In some embodiments of the invention, described smelting furnace includes multiple second air port, and the plurality of second air port is along level
Interval, direction is located on the sidewall in described melting reaction district.Thus, it is possible to unreacted elemental sulfur and combustion after the decomposition of after-flame concentrate
Unreacted carbon in material.
In some embodiments of the invention, described smelting furnace includes multiple 3rd air port, and the plurality of 3rd air port is along level
Interval, direction is located on the sidewall of described blowing reaction zone.Thus, it is possible to significantly improve blowing efficiency.
In some embodiments of the invention, described smelting furnace farther includes: fuel nozzle, and described fuel nozzle is located at institute
State on the sidewall in slag bath district.Thus, it is possible to ensure equipment safe and stable operation.
In another aspect of the invention, the present invention proposes a kind of method utilizing above-mentioned smelting furnace to prepare copper matte regulus.According to this
Inventive embodiment, the method includes:
(1) by the mixed material containing copper concentrate, flux and solid fuel through described material inlet supply extremely described smelting zone,
And supply the first air through described first air port to described melting reaction district, through described second air port to described melting reaction district
Middle supply the second air, in order to described mixed material is reacted in described melting reaction district, obtain melting flue gas and
Containing smelting slag and the mix products of blister copper sulfonium melt, and described melting flue gas is discharged through described melting flue；
(2) the described mix products containing smelting slag and blister copper sulfonium melt is carried out natural subsidence in described melting molten bath district；
(3) smelting slag of step (2) isolated is supplied to described slag bath district；
(4) the blister copper sulfonium melt of step (2) isolated is supplied to described blowing district, simultaneously by described 3rd air
To described blowing reaction zone supply the 3rd air, by flux entrance to described blowing district supply flux, in order to make described slightly
Copper matte regulus melt reacts, and obtains blow flue gas and the mix products containing copper matte regulus melt with blowing slag, and by described blowing
Flue gas is discharged through described blowing flue；And
(5) the described mix products containing copper matte regulus melt and blowing slag is carried out natural subsidence in blowing molten bath district；
(6) the mix products supply after natural subsidence step (5) obtained carries out clarifying treatment to described settling section, with
Just respectively obtain copper matte regulus melt and blowing slag, and described copper matte regulus melt is discharged through described melt outlet, by described blowing slag warp
The outlet of described blowing slag is discharged.
Thus, the method preparing copper matte regulus according to embodiments of the present invention can prepare high-grade copper matte regulus, and obtained
Slag in copper content relatively low.
It addition, the method preparing copper matte regulus according to the above embodiment of the present invention can also have a following additional technical characteristic:
In some embodiments of the invention, the described method preparing copper matte regulus farther includes: by described fuel nozzle to institute
State slag bath district supply fuel, in order to keep the temperature in described slag bath district.Thus, it is possible to ensure equipment safe and stable operation.
In some embodiments of the invention, in step (1), in described first air, oxygen concentration is not less than 70 volume %.
Thus, it is possible to significantly improve smelting efficiency.
In some embodiments of the invention, in step (4), in described 3rd air, oxygen concentration is 25～35 volume %.
Thus, it is possible to significantly improve blowing efficiency.
The additional aspect of the present invention and advantage will part be given in the following description, and part will become bright from the following description
Aobvious, or recognized by the practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage will be apparent from from combining the accompanying drawings below description to embodiment
With easy to understand, wherein:
Fig. 1 is the structural representation of smelting furnace according to an embodiment of the invention；
Fig. 2 is the structural representation of the smelting furnace according to further embodiment of the present invention；
Fig. 3 is the method flow schematic diagram preparing copper matte regulus according to an embodiment of the invention；
Fig. 4 is the method flow schematic diagram preparing copper matte regulus according to further embodiment of the present invention.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most identical
Or similar label represents same or similar element or has the element of same or like function.Retouch below with reference to accompanying drawing
The embodiment stated is exemplary, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ", " outward ",
Orientation or the position relationship of the instruction such as " clockwise ", " counterclockwise ", " axially ", " radially ", " circumferential " are based on shown in the drawings
Orientation or position relationship, be for only for ease of describe the present invention and simplify describe rather than instruction or hint indication device or
Element must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance or
Person implies the quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In describing the invention, " multiple " are meant that at least two, such as two,
Three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", the art such as " fixing "
Language should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be machinery
Connect, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two units
Connection within part or the interaction relationship of two elements, unless otherwise clear and definite restriction.Ordinary skill for this area
For personnel, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be
One directly contacts with second feature, or the first and second features are by intermediary mediate contact.And, fisrt feature is
Two features " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or be merely representative of first
Characteristic level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be fisrt feature
Immediately below second feature or obliquely downward, or it is merely representative of fisrt feature level height less than second feature.
In one aspect of the invention, the present invention proposes a kind of smelting furnace.According to embodiments of the invention, as it is shown in figure 1,
This smelting furnace includes: 100, melting flue 200 and blowing flue 300 at the bottom of smelting furnace.
According to one embodiment of present invention, limiting reaction compartment 10 in 100 at the bottom of smelting furnace, reaction compartment 10 is along water
Square to sequentially forming slag bath district 11, smelting zone 12, blowing district 13 and settling section 14, smelting zone 12 is the most successively
Forming melting reaction district 15 and melting molten bath district 16, blowing district 13 sequentially forms blowing reaction zone 17 and blowing from top to bottom
Molten bath district 18.
According to one embodiment of present invention, smelting zone 12 is spaced apart by the first partition wall 19 with slag bath district 11, i.e. smelting zone
It is provided with the first partition wall 19 between 12 and slag bath district 11, and melting molten bath district 16 is connected with slag bath district 11.Concrete,
Appropriately distance is there is, such that it is able to realize melting molten bath district in the lower end of the first partition wall 19 to the bottom at the bottom of smelting furnace 100
16 are connected with slag bath district 11.It should be noted that those skilled in the art can be according to actual needs to the first partition wall
Particular type selects, such as, can be water jacket partition wall.
According to still a further embodiment, smelting zone 12 and blowing district 13 are spaced apart by the second partition wall 20, i.e. melting
It is provided with the second partition wall between district 12 and blowing district 13, and melting molten bath district 16 is connected with blowing molten bath district 18.Tool
Body, there is appropriately distance in the bottom in the lower end of the second partition wall 20 at the bottom of smelting furnace 100, such that it is able to realize melting
Molten bath district 16 is connected with blowing molten bath district 18.It should be noted that those skilled in the art can be the most right
The particular type of the second partition wall selects, such as, can be water jacket partition wall.
According to another specific embodiment of the present invention, the distance of the first partition wall to the bottom at the bottom of smelting furnace is more than the second partition wall
Distance to the bottom at the bottom of smelting furnace.Thus, after there is difference of specific gravity and realize natural layering in smelting slag and melting melt,
Smelting slag floats over above melting melt owing to proportion is less, smelting slag space bottom at the bottom of the first partition wall and smelting furnace and
Enter into slag bath district, and owing to distance from bottom at the bottom of the second partition wall and smelting furnace is relatively near, block smelting slag and enter into blowing instead
Qu Zhong, melting melt therein then can enter in blowing molten bath district.Concrete, can be according to smelting slag in fusion process
First partition wall and the second partition wall it is set to the distance bottom at the bottom of smelting furnace, as long as can expire with the delamination of melting melt
The separation of foot smelting slag.
According to another specific embodiment of the present invention, blowing district 13 is spaced apart, i.e. by the 3rd partition wall 21 with settling section 14
It is provided with the 3rd partition wall 21 between blowing district 13 and settling section 14, and the molten bath district 18 that blows is connected with settling section 14.
Concrete, there is appropriately distance in the bottom in the lower end of the 3rd partition wall 21 at the bottom of smelting furnace 100, such that it is able to realize blowing
Refining molten bath district 18 is connected with settling section 14.It should be noted that those skilled in the art can be according to actual needs to
The particular type of three partition walls selects, such as, can be water jacket partition wall.
According to embodiments of the invention, at the bottom of smelting furnace, 100 are provided with the 102, second air port, material inlet the 101, first air port
103, the 3rd air port 104, flux entrance 105, smelting slag outlet 106, blowing slag outlet 107 and melt outlet 108.
A specific embodiment according to the present invention, material inlet 101 can be located at the top of smelting zone 12, and be suitable to mixed
Compound material supplies to smelting zone.According to the concrete example of the present invention, material inlet can be multiple, and multiple material enters
Mouth horizontally spaced can be located at the top of smelting zone.
According to still a further embodiment, the first air port 102 can be located on the sidewall in melting reaction district 15, and is suitable to
Oxygen-enriched air is supplied, in order to mixed material is reacted under excess oxygen and obtains containing smelting slag in melting reaction district
Mix products with melting melt.According to the concrete example of the present invention, the first air port can be multiple, and multiple first wind
Mouth can be located on the sidewall in melting reaction district along horizontal direction interval.
According to still another embodiment of the invention, the second air port 103 can be located on the sidewall in melting reaction district 15, and
On vertical direction, the second air port 103 may be located at the top in the first air port 102, and it is normal to be suitable to supply in melting reaction district
Oxygen air, makes the elemental sulfur and the oxygen that produce in fusion process react generation sulfur dioxide, also can make not fill in coal simultaneously
Divided combustion and the carbon monoxide that produces and normal oxygen air react generation carbon dioxide, thus eliminate elemental sulfur and carbon monoxide
The harmful effect that follow-up antacid operation is caused.According to the concrete example of the present invention, the second air port can be multiple and many
Individual second air port can be located on the sidewall in melting reaction district along horizontal direction interval.
According to still another embodiment of the invention, the 3rd air port 104 can be located on the sidewall of blowing reaction zone 17, and is suitable to
Oxygen-enriched air is supplied, in order to make melting melt occur to continue reaction under excess oxygen in blowing reaction zone, such that it is able to
Obtain high-grade melt.According to the concrete example of the present invention, the 3rd air port can be multiple, and multiple 3rd air port can
To be located on the sidewall of blowing reaction zone along horizontal direction interval.
According to another specific embodiment of the present invention, flux entrance 105 can be located at blowing district 13 top, and be suitable to
Blowing supplies flux in district, in order to flux is reacted with melting melt mixed.
According to another specific embodiment of the present invention, smelting slag outlet 106 can be located on the sidewall in slag bath district 11, and suitable
In the smelting slag discharged in slag bath district.Concrete, it is molten higher than in slag bath district that smelting slag outlet can be located on slag bath district sidewall
The position of refining melt.
According to another specific embodiment of the present invention, blowing slag outlet 107 can be located on the sidewall of settling section 14, and be suitable to
Discharge the blowing slag in settling section.Concrete, that blowing slag outlet can be located on settling section sidewall molten higher than in settling section
The position of body, and this blowing slag outlet can be connected with material inlet, in order to by smelting slag supply proceed to smelting zone
Melting processes.
According to another specific embodiment of the present invention, melt outlet 108 can be located on the sidewall of settling section 14, and be suitable to
Discharge the high-grade melt in settling section.Concrete, the position of the close bottom that melt outlet can be located on settling section sidewall.
According to embodiments of the invention, melting flue 200 can be connected with the top of smelting zone 12, and be suitable to melting anti-
Answer the melting flue gas produced in district to discharge smelting zone, and the supply of this melting flue gas is continued with to subsequent handling.
According to embodiments of the invention, blowing flue 300 is connected with the top in blowing district 13, and is suitable to reaction zone of blowing
The blowing flue gas of middle generation discharges blowing district, and the supply of this blowing flue gas is continued with to subsequent handling.
Inventor finds, by arranging partition wall inside at the bottom of smelting furnace, reaction compartment is divided into different reaction zones, and leads to
Cross and air port is set on different reaction zone sidewalls so that the melt produced in melting reaction district continues in blowing reaction zone
Carry out melting process, thus in separate unit smelting furnace, just can prepare high-grade melt, and due to overwhelming majority stove
Slag produces in smelting zone, and the discard slag with copper of smelting zone is relatively low, and the copper amount that smelting slag is carried secretly is few；Although simultaneously in blowing district
Discard slag with copper is high, but the quantity of slag is few, and the copper amount that blowing slag is carried secretly is the most less, controls the copper in slag the most on the whole
Amount, thus significantly reduce valuable metal content in slag, secondly because whole reaction is all carried out inside at the bottom of a smelting furnace,
Hence in so that this smelting furnace compact conformation, floor space is little, such that it is able to significantly reduce cost of investment, and this smelting furnace is outstanding
It is suitable to continuous processing copper concentrate, and obtained copper matte regulus has a higher grade (higher than 75wt%), and copper in slag
Content is relatively low, and more existing process copper concentrate equipment is compared, and the smelting furnace of the present invention can solve in prior art as realizing
Obtain the relatively low slag of copper content while output high-grade copper matte regulus and have to use the problem of two metallurgical furnaces, and this melting
Stove is particularly suitable for the 300000 tons i.e. ore deposit copper smelting plant of following scale.
With reference to Fig. 2, smelting furnace according to embodiments of the present invention farther includes: fuel nozzle 109:
According to embodiments of the invention, fuel nozzle 109 can be located on the sidewall in slag bath district.Thus, it is possible to as required
Fuel is supplied, in order to keep the temperature stabilization in slag bath district, thereby may be ensured that equipment safe and stable operation in slag bath district.
Understand for convenience, be described in detail with the process using the smelting furnace of the embodiment of the present invention to process copper concentrate below.
First, by copper concentrate (water content is not higher than 12wt%, and granularity is not higher than 50mm), flux (quartz sand) and solid
Fluid fuel (coal) through computer system automatically carry out proportioning complete after dispensing, obtain mixed material, then by this mixed material warp
Adhesive tape delivery system supplies to smelting zone through material inlet after delivering to smelting furnace furnace roof, simultaneously anti-to melting by the first air port
Answer and district supplies oxygen-enriched air (oxygen concentration is not less than 70 volume %), supplied in melting reaction district often by the second air port
Oxygen air so that mixed material produces under oxygen-enriched atmosphere in melting reaction district occurs vigorous reaction, and melting reaction district
Elemental sulfur and/or the normal oxygen air that blasts with the second air port in uphill process of carbon monoxide continue to react, such that it is able to
Obtaining melting flue gas and containing smelting slag and the mix products of blister copper sulfonium melt, the smelting flue of melting flue gas obtained is discharged
After enter into Mist heat recovering in waste heat boiler, gather dust and acid making system subsequently into follow-up, and obtain containing melting
The mix products of slag and blister copper sulfonium melt carries out natural subsidence in melting molten bath district, due to smelting slag and blister copper sulfonium melt difference in specific gravity
Different and realize smelting slag and the layering of blister copper sulfonium melt, smelting slag is relatively low and be positioned at the top of blister copper sulfonium melt due to proportion, molten
Refining slag enters into slag bath district through the first partition wall, and sprays into fuel (coal dust) in slag bath district as desired by fuel nozzle
It is incubated in slag bath district, and smelting slag (copper content is less than 1.2wt%) the smelting slag outlet obtained is drained into cinder ladle
In, then deliver to slow cooling operation with cinder ladle handlebar smelting slag and process, and thick melting melt (grade is not higher than 60wt%)
Entering into blowing district through the second partition wall, supply oxygen-enriched air by the 3rd air port in blowing district (oxygen concentration is 25～35 simultaneously
Volume %), supply quartz sand by colvent inlet so that blister copper sulfonium melt proceeds reaction in blowing reaction zone, is blown
Refining flue gas and the mix products containing copper matte regulus melt with blowing slag, the blowing flue gas obtained enters into after blowing flue is discharged
Mist heat recovering in waste heat boiler, gathers dust and acid making system subsequently into follow-up, and obtain containing copper matte regulus melt and blowing
The mix products of refining slag carries out natural subsidence in blowing molten bath district, and blowing slag is more frivolous above copper matte regulus melt, and settles
After the mix products containing copper matte regulus melt and blowing slag enter into through the 3rd partition wall settling section carry out clarified separation, obtain
Copper matte regulus melt (grade be higher than 78wt%) is discharged into next process through melt outlet, and the slag that blows (copper content is 2.8wt%)
Discharge through blowing slag outlet and proceed melting through material inlet Returning smelting district after slow cooling is broken and process.
In another aspect of the present invention, the present invention proposes a kind of method preparing copper matte regulus.According to embodiments of the invention,
This method preparing copper matte regulus is by using above-mentioned smelting furnace to carry out.With reference to Fig. 3, the embodiment of the present invention prepare copper matte regulus
Method include:
S100: by the mixed material containing copper concentrate, flux and solid fuel through the supply of described material inlet to described smelting zone,
And supply the first air through described first air port to described melting reaction district, through described second air port to described melting reaction district
Middle supply the second air, in order to described mixed material is reacted in described melting reaction district, obtain melting flue gas and
Containing smelting slag and the mix products of blister copper sulfonium melt, and described melting flue gas is discharged through described melting flue；
S200: the described mix products containing smelting slag and blister copper sulfonium melt is carried out natural subsidence in described melting molten bath district；
S300: the smelting slag of step S200 isolated is supplied to described slag bath district；
S400: the blister copper sulfonium melt of step S200 isolated is supplied to described blowing district, simultaneously by described 3rd air
To described blowing reaction zone supply the 3rd air, by flux entrance to described blowing district supply flux, in order to make described slightly
Copper matte regulus melt reacts, and obtains blow flue gas and the mix products containing copper matte regulus melt with blowing slag, and by described blowing
Flue gas is discharged through described blowing flue；
S500: the described mix products containing copper matte regulus melt and blowing slag is carried out natural subsidence in blowing molten bath district；And
S600: the mix products supply after natural subsidence step S500 obtained carries out clarifying treatment to described settling section, with
Just respectively obtain copper matte regulus melt and blowing slag, and described copper matte regulus melt is discharged through described melt outlet, by described blowing slag warp
The outlet of described blowing slag is discharged.
According to embodiments of the invention, in the step s 100, in described first air, oxygen concentration is not less than 70 volume %.
Thus, it is possible to significantly improve smelting efficiency.
According to embodiments of the invention, in step S400, in described 3rd air, oxygen concentration is 25～35 volume %.By
This, can significantly improve blowing efficiency.
Thus, the method preparing copper matte regulus according to embodiments of the present invention, by using above-mentioned smelting furnace to process, can be prepared
Obtain high-grade copper matte regulus (grade 78wt%), and in obtained slag, copper content is relatively low.
With reference to Fig. 4, the method preparing copper matte regulus of the embodiment of the present invention farther includes:
S700: by described fuel nozzle to described slag bath district supply fuel, in order to keep the temperature in described slag bath district.
It is equally applicable to this method preparing copper matte regulus for the feature and advantage described by smelting furnace it should be noted that above-mentioned,
Here is omitted.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " concrete example ",
Or specific features, structure, material or the feature bag that the description of " some examples " etc. means to combine this embodiment or example describes
It is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term necessarily
It is directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be arbitrary
Individual or multiple embodiment or example combine in an appropriate manner.Additionally, in the case of the most conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be combined by art personnel
And combination.
Although above it has been shown and described that embodiments of the invention, it is to be understood that above-described embodiment is exemplary,
Being not considered as limiting the invention, those of ordinary skill in the art within the scope of the invention can be to above-described embodiment
It is changed, revises, replaces and modification.
Claims (10)
1. a smelting furnace, it is characterised in that including:
At the bottom of smelting furnace, at the bottom of described smelting furnace in limit reaction compartment, described reaction compartment sequentially forms in the horizontal direction
Slag bath district, smelting zone, blowing district and settling section, described smelting zone sequentially forms melting reaction district and melting molten bath from top to bottom
District, described blowing district sequentially forms blowing reaction zone and blowing molten bath district from top to bottom, and described smelting zone leads to described slag bath district
Cross the first partition wall spaced apart, and described melting molten bath district is connected with described slag bath district, described smelting zone and described blowing district
Spaced apart by the second partition wall, and described melting molten bath district is connected with described blowing molten bath district, and described blowing district is with described
Settling section is spaced apart by the 3rd partition wall, and described blowing molten bath district is connected with described settling section, wherein, and described first
Partition wall is more than described second partition wall distance to the bottom at the bottom of described smelting furnace to the distance of the bottom at the bottom of described smelting furnace；
Melting flue, described melting flue is connected with the top of described smelting zone；
Blowing flue, described blowing flue is connected with the top in described blowing district；
Material inlet, described material inlet is located at the top of described smelting zone；
First air port, described first air port is located on the sidewall in described melting reaction district；
Second air port, described second air port is located on the sidewall in described melting reaction district, and in the vertical direction, and described
Two air ports are positioned at the top in described first air port；
3rd air port, described 3rd air port is located on the sidewall of described blowing reaction zone；
Flux entrance, described flux entrance is located at the top in described blowing district；
Smelting slag exports, and the outlet of described smelting slag is located on the sidewall in described slag bath district；
Blowing slag outlet, the outlet of described blowing slag is located on the sidewall of described settling section；And
Melt outlet, described melt outlet is located on the sidewall of described settling section.
Smelting furnace the most according to claim 1, it is characterised in that include that multiple material inlet, the plurality of material enter
The horizontally spaced top being located at described smelting zone of mouth.
Smelting furnace the most according to claim 1 and 2, it is characterised in that include multiple first air port, the plurality of
On the horizontally spaced sidewall being located at described melting reaction district in one air port.
Smelting furnace the most according to claim 3, it is characterised in that include multiple second air port, the plurality of second wind
On the horizontally spaced sidewall being located at described melting reaction district of mouth.
Smelting furnace the most according to claim 1, it is characterised in that include multiple 3rd air port, the plurality of 3rd wind
On the horizontally spaced sidewall being located at described blowing reaction zone of mouth.
6. according to the smelting furnace described in any one of claim 1-5, it is characterised in that farther include: fuel nozzle, institute
State fuel nozzle to be located on the sidewall in described slag bath district.
7. the method that copper matte regulus prepared by the smelting furnace used described in any one of claim 1-6, it is characterised in that including:
(1) by the mixed material containing copper concentrate, flux and solid fuel through described material inlet supply extremely described smelting zone,
And supply the first air through described first air port to described melting reaction district, through described second air port to described melting reaction district
Middle supply the second air, in order to described mixed material is reacted in described melting reaction district, obtain melting flue gas and
Containing smelting slag and the mix products of blister copper sulfonium melt, and described melting flue gas is discharged through described melting flue；
(2) the described mix products containing smelting slag and blister copper sulfonium melt is carried out natural subsidence in described melting molten bath district；
(3) smelting slag of step (2) isolated is supplied to described slag bath district；
(4) the blister copper sulfonium melt of step (2) isolated is supplied to described blowing district, simultaneously by described 3rd air
To described blowing reaction zone supply the 3rd air, by flux entrance to described blowing district supply flux, in order to make described slightly
Copper matte regulus melt reacts, and obtains blow flue gas and the mix products containing copper matte regulus melt with blowing slag, and by described blowing
Flue gas is discharged through described blowing flue；And
(5) the described mix products containing copper matte regulus melt and blowing slag is carried out natural subsidence in blowing molten bath district；
(6) the mix products supply after natural subsidence step (5) obtained carries out clarifying treatment to described settling section, with
Just respectively obtain copper matte regulus melt and blowing slag, and described copper matte regulus melt is discharged through described melt outlet, by described blowing slag warp
The outlet of described blowing slag is discharged.
Method the most according to claim 7, it is characterised in that farther include: by described fuel nozzle to described
Slag bath district supply fuel, in order to keep the temperature in described slag bath district.
9. according to the method described in claim 7 or 8, it is characterised in that in step (1), in described first air
Oxygen concentration is not less than 70 volume %.
Method the most according to claim 9, it is characterised in that in step (4), oxygen in described 3rd air
Concentration is 25～35 volume %.
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| CN109764679A (en) * | 2017-11-09 | 2019-05-17 | 中国瑞林工程技术股份有限公司 | Smelting device and smelting process |
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| CN113046571A (en) * | 2021-03-08 | 2021-06-29 | 易门铜业有限公司 | Smelting system and method for reducing generation of magnetic iron in copper ore smelting process |
| CN116425121A (en) * | 2023-05-22 | 2023-07-14 | 南风化工(运城)集团有限公司 | Sodium sulfide production method |
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| CN105907987B (en) | 2017-10-27 |
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