CN107674986A - The system and method for handling molten state copper ashes - Google Patents
The system and method for handling molten state copper ashes Download PDFInfo
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- CN107674986A CN107674986A CN201711019033.0A CN201711019033A CN107674986A CN 107674986 A CN107674986 A CN 107674986A CN 201711019033 A CN201711019033 A CN 201711019033A CN 107674986 A CN107674986 A CN 107674986A
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- heater
- molten state
- copper ashes
- lance
- state copper
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/04—Working-up slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B15/00—Other processes for the manufacture of iron from iron compounds
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The invention discloses the system and method for processing molten state copper ashes, the system includes：Body of heater, its top have opening, define molten bath in it, the top of its side wall has slag notch, and bottom has tapping hole；Lance, lance are stretched into the inside of body of heater by opening；Coal powder lance, coal powder lance are stretched into the inside of body of heater by opening；Bottom-blowing device, it is arranged on below body of heater and the inside of body of heater is communicated to by the bottom wall of body of heater；Smoke gas collecting apparatus, it is located at the top of opening, and suitable for collecting caused flue gas in body of heater；Heat-exchanger rig, it has high-temperature flue gas entry, low-temperature flue gas outlet, cryogenic inert gas entrance and high temperature inert gas outlet.The system can make full use of the sensible heat of molten state copper ashes to be smelted, while the high temperature inert gas for preheating to obtain using flue gas during smelting is stirred to material, further material can be promoted fully to react, and be advantageous to the removing of product impurity.
Description
Technical field
The present invention relates to field of metallurgy, and specifically, the present invention relates to the system and method for processing molten state copper ashes.
Background technology
With the rise of China's nonferrous industry, various high-end electrical equipment, the vehicles, the application of aerospace material, promote
A large amount of exploitations of China's non-ferrous metal.Coloured waste residue, such as copper ashes, the coloured slag of lead cadmia low melting point smelt simultaneously caused by
Accumulate to be handled.
Copper ashes is a kind of " arenolite " waste residue caused by copper smelting by pyrometallurgical process, the quantity of slag increase with Copper making yield and
Increase.Reform and opening-up is between 30 years, and due to China's industry and economic rapid development, China's copper yield and consumption are all located at now
The first in the world；To current, the quantity that copper smelting by pyrometallurgical process forms slag has reached 150,000,000 tons, coloured etc. big with river copper, Daye
Type enterprise smelts the raising of copper technology, and the quantity of copper ashes is also being continuously increased.Copper ashes is a kind of answering containing divalent metal compound
Close ore deposit metallurgical slag, have the characteristics that quantity greatly, fine size, wide variety, complicated component, contain having for substantial amounts of recoverable
Valency metal.For example, wherein iron content is typically 40% or so, much larger than 29.1% average production-grade of iron ore.
With the raising of environmental protection requirement and the increasingly depleted of mineral resources, reclaim and have using copper ashes particularly significant
Meaning.
The content of the invention
It is contemplated that at least solves one of technical problem in correlation technique to a certain extent.Therefore, the present invention
One purpose is the system and method for proposing processing molten state copper ashes.The system can make full use of the sensible heat of molten state copper ashes
Smelted, while the high temperature inert gas for preheating to obtain using flue gas during smelting is stirred to material, can further be promoted
Material fully reacts, and is advantageous to the removing of product impurity.
In the first aspect of the present invention, the present invention proposes a kind of system for handling molten state copper ashes.According to the present invention's
Embodiment, the system include：Body of heater, the top of the body of heater have opening, and molten bath, the body of heater side are defined in the body of heater
The top of wall has slag notch, and bottom has tapping hole；Lance, the lance are stretched into the body of heater by the opening
Portion；Coal powder lance, the coal powder lance stretch into the inside of the body of heater by described be open；Bottom-blowing device, the bottom-blowing device are arranged on
The inside of the body of heater is communicated to below the body of heater and by the bottom wall of the body of heater；Smoke gas collecting apparatus, the flue gas are received
Acquisition means are located at the top of the opening, and suitable for collecting caused flue gas in the body of heater；Heat-exchanger rig, the heat exchange dress
Put with high-temperature flue gas entry, low-temperature flue gas outlet, cryogenic inert gas entrance and high temperature inert gas outlet, the high temperature cigarette
Gas entrance is connected with the smoke gas collecting apparatus, and the high temperature inert gas outlet is connected with the bottom-blowing device.
The system of processing molten state copper ashes according to embodiments of the present invention, by the way that hot molten copper slag is opened by body of heater top
Mouthful supply supplies oxidizing gas into the molten bath in body of heater, and by lance to furnace interior, by coal powder lance to body of heater
Inside supply reduction coal, to be smelted to molten state copper ashes, obtains iron product, tailings and flue gas, wherein, iron product is by stove
Body sidewall bottom tapping hole discharge, tailings by upper of furnace body slag notch discharge, flue gas discharged by body of heater top end opening and by
Smoke gas collecting apparatus is collected, and subsequent high temperature flue gas is used for pre- hot inert gas into heat-exchanger rig；In smelting process, pass through bottom blowing
Device molten bath into body of heater is blown the high temperature inert gas after smoke pre-heating, to be stirred to material in body of heater, so as to
Further material can be promoted fully to react, and be advantageous to the removing of product impurity.Thus, processing according to embodiments of the present invention
The system of molten state copper ashes significantly reduces process energy consumption and coal consumption, and use lazy by using the sensible heat of molten state copper ashes
Property gas is mutually adulterated more, while can effectively solved to material stirring in stove so as to solve the problems, such as to slag tap and tap a blast furnace
Smelt the problem of containing impurity copper in obtained iron.
In addition, the system of processing molten state copper ashes according to the above embodiment of the present invention can also have skill additional as follows
Art feature：
In some embodiments of the invention, the system of the processing molten state copper ashes further comprises：Fixing device, institute
Fixing device is stated to connect respectively by described two rotary shafts including two steady arms and two rotary shafts, described two steady arms
In the both sides of the body of heater.
In some embodiments of the invention, the fixing device is fixed using suspension.Thus, it is possible to body of heater is hung solid
It is scheduled on the roof of smelting shop.
In some embodiments of the invention, the fixing device is fixed using support.Thus, it is possible to converter body support is consolidated
It is scheduled on the ground of smelting shop.
In some embodiments of the invention, the body of heater is cylindrical, and the length ratio of the height and external diameter of the body of heater is
(1.2~1.4):1.
In some embodiments of the invention, it is in arc transition between the side wall of the body of heater and bottom wall.
In some embodiments of the invention, the internal diameter of the body of heater is 6.00~6.02m, the diameter of the body of heater bottom wall
For 4.108~4.306m.
In the second aspect of the present invention, what the present invention proposed a kind of processing molten state copper ashes using above-described embodiment is
The method of system processing molten state copper ashes.According to an embodiment of the invention, this method includes：(1) by molten state copper ashes by the stove
The opening on body top is supplied to the body of heater；(2) inert gas, and profit are supplied into the body of heater using the bottom-blowing device
Material in the body of heater is stirred with the inert gas；(3) reduction coal is blown into the stove using the coal powder lance
In vivo；(4) oxidizing gas is blown into the body of heater using the lance；And (5) by the molten state copper ashes, institute
State reduction coal and the oxidizing gas carries out metallurgy, to obtain molten iron and tailings.
Thus, the method for processing molten state copper ashes according to embodiments of the present invention, by by hot molten copper slag by body of heater
Open top is supplied in the molten bath to body of heater, and supplies oxidizing gas to furnace interior by lance, passes through coal powder lance
Reduction coal is supplied to furnace interior, to be smelted to molten state copper ashes, obtains iron product, tailings and flue gas, wherein, iron production
Product are discharged by the tapping hole of sidewall of the furnace body bottom, and tailings is discharged by the slag notch of upper of furnace body, and flue gas is arranged by body of heater top end opening
Go out and collected by smoke gas collecting apparatus, subsequent high temperature flue gas is used for pre- hot inert gas into heat-exchanger rig；In smelting process, lead to
Cross bottom-blowing device molten bath into body of heater and be blown the high temperature inert gas after smoke pre-heating, to stir material in body of heater
Mix, so as to further promote material fully to react, and be advantageous to the removing of product impurity.Thus, implemented according to the present invention
The method of the processing molten state copper ashes of example significantly reduces process energy consumption and coal consumption by using the sensible heat of molten state copper ashes,
And using inert gas to material stirring in stove, so as to solve the problems, such as to slag tap and tap a blast furnace mutually adulterate it is more, while can be with
Effectively solve the problems, such as to smelt in obtained iron and contain impurity copper.
In addition, the method for processing molten state copper ashes according to the above embodiment of the present invention can also have skill additional as follows
Art feature：
In some embodiments of the invention, the speed that is blown into of the reduction coal is 130~140m/s, the oxidisability gas
The speed that is blown into of body is 340~380m/s.
In some embodiments of the invention, the temperature of the metallurgy is 1260~1280 DEG C.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the system structure diagram of processing molten state copper ashes according to an embodiment of the invention；
Fig. 2 is the system structure diagram according to the processing molten state copper ashes of further embodiment of the present invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In the present invention, unless otherwise clearly defined and limited, the term such as " installation ", " connected ", " connection ", " fixation "
It should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can mechanically connect,
It can also be electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can be two element internals
Connection or the interaction relationship of two elements, limited unless otherwise clear and definite.For the ordinary skill in the art,
The concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
In the first aspect of the present invention, the present invention proposes a kind of system for handling molten state copper ashes.According to the present invention's
Embodiment, with reference to figure 1~2, the system includes：Body of heater 100, lance 200, coal powder lance 300, bottom-blowing device 400, fume collection
Device 500 and heat-exchanger rig 600.Wherein, the top of body of heater 100 has opening 110, and molten bath 120, stove are defined in body of heater 100
The top of the side wall of body 100 has slag notch 130, and bottom has tapping hole 140；Lance 200 stretches into body of heater 100 by opening 110
Inside；Coal powder lance 300 is stretched into the inside of body of heater 100 by opening 110；Bottom-blowing device 400 is arranged on the lower section of body of heater 100 and passed through
The bottom wall of body of heater 100 is communicated to the inside of body of heater 100；Smoke gas collecting apparatus 500 is located at the top of opening 110, and suitable for receiving
Collect caused flue gas in body of heater 100；Heat-exchanger rig 600 has high-temperature flue gas entry 601, low-temperature flue gas outlet 602, cryogenic inert
Gas access 603 and high temperature inert gas outlet 604, high-temperature flue gas entry 601 is connected with smoke gas collecting apparatus 500, and high temperature is lazy
Property gas vent 604 is connected with bottom-blowing device 400.
It is described in detail below with reference to the system of Fig. 1~2 pair processing molten state copper ashes according to embodiments of the present invention：
According to an embodiment of the invention, the top of body of heater 100 has opening 110, and molten bath 120, stove are defined in body of heater 100
The top of the side wall of body 100 has slag notch 130, and bottom has tapping hole 140.Specifically, can be by hot molten copper slag by stove
The opening supply on body top supplies oxidizing gas into body of heater into the molten bath in body of heater, while using lance and coal powder lance
And reduction coal, to be smelted to copper ashes, iron product, tailings and flue gas are obtained, wherein, iron product can have under sidewall of the furnace body
The tapping hole in portion is discharged into ladle, and tailings can be discharged into cinder ladle by the slag notch on sidewall of the furnace body top, and flue gas can be with
Discharged by the opening on body of heater top.According to a particular embodiment of the invention, tapping hole is apart from furnace bottom about 1.8~2.2m, slag notch
Apart from furnace bottom about 4~5m in addition, furnace interior can be formed by refractory material laying, so as to be suitable to pyrolytic semlting condition.
According to a particular embodiment of the invention, body of heater can be with cylindrical, and the length ratio of the height and external diameter of body of heater can be
(1.2~1.4):1, the heat size ratio of furnace interior can be 0.85~0.95m3/t。
According to a particular embodiment of the invention, it between the side wall of body of heater and bottom wall can be in arc transition, such as body of heater
Bottom can be with arched, and a height of 0.900~0.902m of arch.
According to a particular embodiment of the invention, the internal diameter of body of heater can be 6.00~6.02m, and the diameter of body of heater bottom wall can be with
For 4.108~4.306m.
According to the specific embodiment of the present invention, the opening on body of heater top can be spherical, and spherical crown curvature can
Think 5.45~5.49m.
According to an embodiment of the invention, lance 200 is stretched into the inside of body of heater 100 by opening 110, and lance is suitable to stove
Supply oxidizing gas in vivo, such as air, oxygen or oxygen-enriched air, to be smelted to furnace charge.According to the tool of the present invention
Body embodiment, lance can be freely shifted in the horizontal direction in body of heater, to adjust the injection position of oxidizing gas.
According to a particular embodiment of the invention, lance can be three hole lances, and the specific works parameter of lance can
With including：Lance coolant rate is 90~110t/h, and coolant admission velocity is 4~6m/s, and temperature is 19~20 DEG C, cold
But liquid back-flow velocity is 5~7m/s, and temperature is 36~40 DEG C, and coolant shower nozzle flow velocity be 7~9m/s, spray gun internal diameter for 0.18~
0.22m, spout are Raoul tubular construction, and minor axis is 0.050~0.054m, and length is 0.019~0.021m, and wide footpath is 0.066
~0.070m, total length are 0.09~0.11m；A length of 2.48~the 2.52m of body of a gun outer tube, body of a gun middle tube a length of 3.48~
3.52m, central oxygen pipe range are 4.48~4.52m, and three spout central lines and the vertical angle of oxygen spray gun are 10~14 degree, oxygen spray
Rifle material is copper, coolant for heat transfer preferably, the preferable liquid of mobility, such as impure less iundustrial oil.
According to an embodiment of the invention, coal powder lance 300 is stretched into the inside of body of heater 100 by opening 110, and coal powder lance is suitable to stove
Internal portion, to be smelted to furnace charge, as a result of hot molten copper slag, can supply for supply reduction coal into body of heater
Less amount of coal charge is used for fuel heat supply, you can reaches temperature needed for smelting.According to a particular embodiment of the invention, coal powder lance can
To be freely shifted in the horizontal direction in body of heater, to adjust the injection position of reduction coal.
According to a particular embodiment of the invention, coal powder lance can be single port spray gun, and its material is stainless for Wear-resistant, high-temperature resistant
Steel material, the specific works parameter of coal powder lance can include：Coal powder lance coolant rate is 85~95t/h, and coolant enters speed
It is 22~28 DEG C to spend for 6~8m/s, temperature, and coolant back-flow velocity is 7~9m/s, and temperature is 42~48 DEG C, coolant shower nozzle
Flow velocity is 8~12m/s, a length of 2.18~2.22m of body of a gun outer tube, a length of 3.18~3.22m of body of a gun middle tube, and central oxygen pipe range is
4.18~4.22m, spray gun internal diameter are 0.175~0.185m, and spout is Raoul tubular construction, and minor axis is 0.049~0.051m, long
It is 0.065~0.069m to spend for 0.018~0.022m, wide footpath, and 0.093~0.097m of total length, coolant can be at
Reason is not easy incrusted cooling water.
According to an embodiment of the invention, bottom-blowing device 400 is arranged on the lower section of body of heater 100 and connected by the bottom wall of body of heater 100
The inside of body of heater 100 is passed to, bottom-blowing device 400 is suitable to be blown high temperature inert gas (such as high temperature argon) into body of heater, so as to
Furnace charge is stirred, so as to be advantageous to smelt the removing of impurity in obtained iron product, such as the removing of impurity copper.According to this
The specific embodiment of invention, bottom-blowing device can use MHP-D type technology pipe bricks, and the adjustable air demand of external connection feeder is big
It is small.In addition, the breather line that bottom-blowing device is connected can be soft pipeline, in order to discharge.
According to an embodiment of the invention, smoke gas collecting apparatus 500 is located at the top of opening 110, and suitable for collecting body of heater
Caused flue gas in 100.Specifically, by can be used for subsequently the pyrolytic semlting fume collection to lazy in bottom-blowing device
Property gas preheated, so as to further improve the heat utilization efficiency of technique, and reduce energy consumption.
According to an embodiment of the invention, heat-exchanger rig 600 have high-temperature flue gas entry 601, low-temperature flue gas outlet 602, it is low
Warm inert gas entrance 603 and high temperature inert gas outlet 604, high-temperature flue gas entry 601 is connected with smoke gas collecting apparatus 500,
High temperature inert gas outlet 604 is connected with bottom-blowing device 400, and heat-exchanger rig 600 is suitable to utilize to be collected in smoke gas collecting apparatus 500
Obtained high-temperature flue gas preheats to inert gas, to obtain high temperature inert gas.
With reference to figure 2, the system of processing molten state copper ashes of the invention can further include：Fixing device.
According to an embodiment of the invention, fixing device includes two steady arms 710 and two rotary shafts 720, two supports
Bar 710 is connected to the both sides of body of heater 100 by two rotary shafts 720.Thus, it is possible to body of heater is carried out using fixing device
It is fixed, and body of heater is freely tilted to slag notch or tapping hole direction, in order to discharge.In some of the present invention
In embodiment, fixing device can use suspension to fix.Thus, it is possible to body of heater suspension is fixed on to the roof of smelting shop.
In other embodiments of the present invention, fixing device can use support to fix.Thus, it is possible to converter body support is fixed on smelting
The ground in workshop.
Thus, the system of processing molten state copper ashes according to embodiments of the present invention, by by hot molten copper slag by body of heater
Open top is supplied in the molten bath to body of heater, and supplies oxidizing gas to furnace interior by lance, passes through coal powder lance
Reduction coal is supplied to furnace interior, to be smelted to molten state copper ashes, obtains iron product, tailings and flue gas, wherein, iron production
Product are discharged by the tapping hole of sidewall of the furnace body bottom, and tailings is discharged by the slag notch of upper of furnace body, and flue gas is arranged by body of heater top end opening
Go out and collected by smoke gas collecting apparatus, subsequent high temperature flue gas is used for pre- hot inert gas into heat-exchanger rig；In smelting process, lead to
Cross bottom-blowing device molten bath into body of heater and be blown the high temperature inert gas after smoke pre-heating, to stir material in body of heater
Mix, so as to further promote material fully to react, and be advantageous to the removing of product impurity.Thus, implemented according to the present invention
The system of the processing molten state copper ashes of example significantly reduces process energy consumption and coal consumption by using the sensible heat of molten state copper ashes,
And using inert gas to material stirring in stove, so as to solve the problems, such as to slag tap and tap a blast furnace mutually adulterate it is more, while can be with
Effectively solve the problems, such as to smelt in obtained iron and contain impurity copper.
In the second aspect of the present invention, what the present invention proposed a kind of processing molten state copper ashes using above-described embodiment is
The method of system processing molten state copper ashes.According to an embodiment of the invention, this method includes：(1) by molten state copper ashes by the stove
The opening on body top is supplied to the body of heater；(2) inert gas, and profit are supplied into the body of heater using the bottom-blowing device
Material in the body of heater is stirred with the inert gas；(3) reduction coal is blown into the stove using the coal powder lance
In vivo；(4) oxidizing gas is blown into the body of heater using the lance；And (5) by the molten state copper ashes, institute
State reduction coal and the oxidizing gas carries out metallurgy, to obtain molten iron and tailings.
According to a particular embodiment of the invention, the method for the processing molten state copper ashes of the embodiment of the present invention can be wrapped further
Include：
(1) 100 parts of molten state copper ashes is loaded in body of heater by body of heater top end opening, then says lower coal powder lance to upper of furnace body
1/3rd and at 4.19~4.2m of furnace bottom spray into coal dust, coal dust is transported and sprayed into by nitrogen, while bottom of furnace body is adopted
It is stirred with blowing device injection argon gas, the amount for being blown into argon gas is 25~30 parts, and it is 130~140m/s to be blown into speed.Afterwards
Lift coal powder lance, lance is dropped at 3.5~4m of furnace bottom and is blown the oxygen for being mixed with 15~20 parts of lime in advance, is sprayed into
Speed is 340~380m/s, so that coal dust vigorous oxidation heat production in body of heater, and stove body temperature is reached 1260~1280
DEG C, the sustainable 15~20min of the temperature, while use bottom-blowing device to be blown into argon gas with the 180~220m/s speed that is blown into, subsequently
Stop spraying into oxygen, and argon gas is blown into speed and is reduced to 100~140m/s, be blown into 2~2.5min of argon gas.
(2) 100 parts of molten state copper ashes are loaded by body of heater top end opening again, declines coal powder lance to apart from slag iron liquid level 0.38
Coal powder injection operation is carried out at~0.42m, lance is dropped to the oxygen for being mixed with lime is highly sprayed into coal powder lance identical afterwards,
Argon bottom-blowing carries out auxiliary stirring simultaneously.
(3) for repeat step (2) until slag iron liquid level reaches 3.6~4.0m in body of heater, the ball that will slag tap is put into body of heater, and
Fixing device will be utilized, by body of heater to slag notch direction tilt, wherein, ball of slagging tap be density between molten iron and slag, can suspend
The globular solids do not reacted in slag iron interface and with molten iron or slag, can enter according to the iron-holder and input amount of handled copper ashes
Row slagging operates.After completion is slagged tap, the tapping hole for opening lower portion of furnace body carries out operation of tapping a blast furnace, when molten iron level is less than tapping hole
Afterwards, body of heater is tilted to slag notch direction using fixing device, in order to continue to tap a blast furnace., can conduct after tailings discharge is water cooled
The raw material of cement is made, insulation operation is carried out into ladle after molten iron discharge, can be used for making steel.
Thus, the method for processing molten state copper ashes according to embodiments of the present invention, by by hot molten copper slag by body of heater
Open top is supplied in the molten bath to body of heater, and supplies oxidizing gas to furnace interior by lance, passes through coal powder lance
Reduction coal is supplied to furnace interior, to be smelted to molten state copper ashes, obtains iron product, tailings and flue gas, wherein, iron production
Product are discharged by the tapping hole of sidewall of the furnace body bottom, and tailings is discharged by the slag notch of upper of furnace body, and flue gas is arranged by body of heater top end opening
Go out and collected by smoke gas collecting apparatus, subsequent high temperature flue gas is used for pre- hot inert gas into heat-exchanger rig；In smelting process, lead to
Cross bottom-blowing device molten bath into body of heater and be blown the high temperature inert gas after smoke pre-heating, to stir material in body of heater
Mix, so as to further promote material fully to react, and be advantageous to the removing of product impurity.Thus, implemented according to the present invention
The method of the processing molten state copper ashes of example significantly reduces process energy consumption and coal consumption by using the sensible heat of molten state copper ashes,
And using inert gas to material stirring in stove, so as to solve the problems, such as to slag tap and tap a blast furnace mutually adulterate it is more, while can be with
Effectively solve the problems, such as to smelt in obtained iron and contain impurity copper.
Below with reference to specific embodiment, present invention is described, it is necessary to which explanation, these embodiments are only to describe
Property, without limiting the invention in any way.
Embodiment 1
Handling the system of molten state copper ashes includes the body of heater of a class cylinder, and furnace interior is by refractory material laying, stove
There is fixing device outside body and may be such that body of heater prolongs tapping hole or slag notch direction tilts, have fume collection dress above body of heater
Put, lance and coal powder lance can move up and down selection injection position in left and right in body of heater.Sidewall of the furnace body top is provided with slag notch,
It is apart from furnace bottom about 4~5m；Bottom is provided with tapping hole, and it is apart from furnace bottom about 2m.Bottom of furnace body be provided with bottom-blowing device and
For the gas pipeline of bottom-blowing device to be flexible coupling, the argon gas that bottom-blowing device is blown into first passes through the high-temperature flue gas preheating of body of heater discharge in advance,
Carried out after high-temperature flue gas heat exchange except zinc is handled.
Body of heater heat size ratio is 0.9m3/ t, depth-width ratio 1.3, a diameter of 6.00~6.02m in molten bath, furnace bottom a diameter of 4.108
~4.306m, a height of 0.900~0.902m of arch, spherical crown curvature are 5.45~5.49m.Coal powder lance is single port spray gun, its material
For the stainless steel of Wear-resistant, high-temperature resistant, lance coolant rate is 90t/h, and coolant admission velocity is 7m/s, and temperature is
25 DEG C, coolant back-flow velocity is 8m/s, and temperature is 45 DEG C, and coolant shower nozzle flow velocity is 10m/s, body of a gun outer tube a length of 2.18~
2.22m, a length of 3.18~3.22m of body of a gun middle tube, central oxygen pipe range are 4.18~4.22m, spray gun internal diameter is 0.175~
0.185m, spout are Raoul tubular construction, and minor axis is 0.049~0.051m, and length is 0.018~0.022m, and wide footpath is 0.065
~0.069m, 0.093~0.097m of total length, coolant are not easy incrusted cooling water to be treated；Lance cools down
Flow quantity is 100t/h, and coolant admission velocity is 5m/s, and temperature is 19 DEG C, and coolant back-flow velocity is 6m/s, temperature 38
DEG C, coolant shower nozzle flow velocity is 8m/s, and spray gun internal diameter is 0.18~0.22m, and spout is Raoul tubular construction, minor axis 0.050
~0.054m, length are 0.019~0.021m, and wide footpath is 0.066~0.068m, 0.09~0.11m of total length, the outer pipe range of the body of a gun
For 2.48~2.52m, a length of 3.48~3.52m of body of a gun middle tube, central oxygen pipe range is 4.48~4.52m, three of oxygen spray gun
Spout central line and vertical angle are 12 °, and oxygen spray gun material is copper, and coolant is preferable, the preferable liquid object of mobility of conducting heat
Matter, such as impure less iundustrial oil.Bottom injection high temperature argon carries out the stirring to bottom, and furnace bottom air jet system uses
MHP-D type technology pipe bricks, and external connection feeder can adjust air demand size.
Using the system of above-mentioned processing molten state copper ashes, molten state copper ashes is handled according to the following steps：
(1) 100 parts of molten state copper ashes is loaded in body of heater by body of heater top end opening, then says lower coal powder lance to upper of furnace body
1/3rd and coal dust is sprayed at furnace bottom 4.19m, coal dust transport and sprayed into by nitrogen, while bottom of furnace body is using spraying
Blowing apparatus injection argon gas is stirred, and the amount for being blown into argon gas is 28 parts, and it is 135m/s to be blown into speed.Lift coal powder lance afterwards, will
Lance drops at furnace bottom 4m the oxygen for being blown and being mixed with 15 parts of lime in advance, and penetrating speed is 350m/s, is used simultaneously
Bottom-blowing device is blown into argon gas with the 180m/s speed that is blown into, follow-up to stop spraying into oxygen, and argon gas is blown into speed and is reduced to
120m/s, it is blown into argon gas 1.5min.
(2) 100 parts of molten state copper ashes are loaded by body of heater top end opening again, declines coal powder lance to apart from slag iron liquid level 0.5m
Place carries out coal powder injection operation, drops to lance the oxygen for being mixed with lime is highly sprayed into coal powder lance identical afterwards, while bottom
Blowing argon gas carry out auxiliary stirring.
(3) for repeat step (2) until slag iron liquid level reaches 3.8m in body of heater, the ball that will slag tap is put into body of heater, and by profit
With fixing device, body of heater is tilted to slag notch direction, wherein, ball of slagging tap be density between molten iron and slag, slag can be suspended in
Iron interface and the globular solids do not reacted with molten iron or slag, can be put according to the iron-holder and input amount of handled copper ashes
Slag operation.After completion is slagged tap, the tapping hole for opening lower portion of furnace body carries out operation of tapping a blast furnace, after molten iron level is less than tapping hole, profit
Body of heater is tilted to slag notch direction with fixing device, in order to continue to tap a blast furnace.After tailings discharge is water cooled, it can be used as and make water
The raw material of mud, insulation operation is carried out into ladle after molten iron discharge, can be used for making steel.
Embodiment 2
Handling the system of molten state copper ashes includes the body of heater of a class cylinder, and furnace interior is by refractory material laying, stove
There is fixing device outside body and may be such that body of heater prolongs tapping hole or slag notch direction tilts, have fume collection dress above body of heater
Put, lance and coal powder lance can move up and down selection injection position in left and right in body of heater.Sidewall of the furnace body top is provided with slag notch,
It is apart from furnace bottom about 4~5m；Bottom is provided with tapping hole, and it is apart from furnace bottom about 2m.Bottom of furnace body be provided with bottom-blowing device and
For the gas pipeline of bottom-blowing device to be flexible coupling, the argon gas that bottom-blowing device is blown into first passes through the high-temperature flue gas preheating of body of heater discharge in advance,
Carried out after high-temperature flue gas heat exchange except zinc is handled.
Body of heater heat size ratio is 0.9m3/ t, depth-width ratio 1.3, a diameter of 6.00~6.02m in molten bath, furnace bottom a diameter of 4.108
~4.306m, a height of 0.900~0.902m of arch, spherical crown curvature are 5.45~5.49m.Coal powder lance is single port spray gun, its material
For the stainless steel of Wear-resistant, high-temperature resistant, lance coolant rate is 90t/h, and coolant admission velocity is 7m/s, and temperature is
25 DEG C, coolant back-flow velocity is 8m/s, and temperature is 45 DEG C, and coolant shower nozzle flow velocity is 10m/s, body of a gun outer tube a length of 2.18~
2.22m, a length of 3.18~3.22m of body of a gun middle tube, central oxygen pipe range are 4.18~4.22m, spray gun internal diameter is 0.175~
0.185m, spout are Raoul tubular construction, and minor axis is 0.049~0.051m, and length is 0.018~0.022m, and wide footpath is 0.065
~0.069m, 0.093~0.097m of total length, coolant are not easy incrusted cooling water to be treated；Lance cools down
Flow quantity is 100t/h, and coolant admission velocity is 5m/s, and temperature is 19 DEG C, and coolant back-flow velocity is 6m/s, temperature 38
DEG C, coolant shower nozzle flow velocity is 8m/s, and spray gun internal diameter is 0.18~0.22m, and spout is Raoul tubular construction, minor axis 0.050
~0.054m, length are 0.019~0.021m, and wide footpath is 0.066~0.068m, 0.09~0.11m of total length, the outer pipe range of the body of a gun
For 2.48~2.52m, a length of 3.48~3.52m of body of a gun middle tube, central oxygen pipe range is 4.48~4.52m, three of oxygen spray gun
Spout central line and vertical angle are 12 °, and oxygen spray gun material is copper, and coolant is preferable, the preferable liquid object of mobility of conducting heat
Matter, such as impure less iundustrial oil.Bottom injection high temperature argon carries out the stirring to bottom, and furnace bottom air jet system uses
MHP-D type technology pipe bricks, and external connection feeder can adjust air demand size.
Using the system of above-mentioned processing molten state copper ashes, molten state copper ashes is handled according to the following steps：
(1) 100 parts of molten state copper ashes is loaded in body of heater by body of heater top end opening, then says lower coal powder lance to upper of furnace body
1/3rd and coal dust is sprayed at furnace bottom 4.19m, coal dust transport and sprayed into by nitrogen, while bottom of furnace body is using spraying
Blowing apparatus injection argon gas is stirred, and the amount for being blown into argon gas is 30 parts, and it is 140m/s to be blown into speed.Lift coal powder lance afterwards, will
Lance drops at furnace bottom 4m the oxygen for being blown and being mixed with 15 parts of lime in advance, and penetrating speed is 350m/s, is used simultaneously
Bottom-blowing device is blown into argon gas with the 200m/s speed that is blown into, follow-up to stop spraying into oxygen, and argon gas is blown into speed and is reduced to
100m/s, it is blown into argon gas 1.5min.
(2) 100 parts of molten state copper ashes are loaded by body of heater top end opening again, declines coal powder lance to apart from slag iron liquid level 0.5m
Place carries out coal powder injection operation, drops to lance the oxygen for being mixed with lime is highly sprayed into coal powder lance identical afterwards, while bottom
Blowing argon gas carry out auxiliary stirring.
(3) for repeat step (2) until slag iron liquid level reaches 3.8m in body of heater, the ball that will slag tap is put into body of heater, and by profit
With fixing device, body of heater is tilted to slag notch direction, wherein, ball of slagging tap be density between molten iron and slag, slag can be suspended in
Iron interface and the globular solids do not reacted with molten iron or slag, can be put according to the iron-holder and input amount of handled copper ashes
Slag operation.After completion is slagged tap, the tapping hole for opening lower portion of furnace body carries out operation of tapping a blast furnace, after molten iron level is less than tapping hole, profit
Body of heater is tilted to slag notch direction with fixing device, in order to continue to tap a blast furnace.After tailings discharge is water cooled, it can be used as and make water
The raw material of mud, insulation operation is carried out into ladle after molten iron discharge, can be used for making steel.
Embodiment 3
Handling the system of molten state copper ashes includes the body of heater of a class cylinder, and furnace interior is by refractory material laying, stove
There is fixing device outside body and may be such that body of heater prolongs tapping hole or slag notch direction tilts, have fume collection dress above body of heater
Put, lance and coal powder lance can move up and down selection injection position in left and right in body of heater.Sidewall of the furnace body top is provided with slag notch,
It is apart from furnace bottom about 4~5m；Bottom is provided with tapping hole, and it is apart from furnace bottom about 2m.Bottom of furnace body be provided with bottom-blowing device and
For the gas pipeline of bottom-blowing device to be flexible coupling, the argon gas that bottom-blowing device is blown into first passes through the high-temperature flue gas preheating of body of heater discharge in advance,
Carried out after high-temperature flue gas heat exchange except zinc is handled.
Body of heater heat size ratio is 0.9m3/ t, depth-width ratio 1.3, a diameter of 6.00~6.02m in molten bath, furnace bottom a diameter of 4.108
~4.306m, a height of 0.900~0.902m of arch, spherical crown curvature are 5.45~5.49m.Coal powder lance is single port spray gun, its material
For the stainless steel of Wear-resistant, high-temperature resistant, lance coolant rate is 90t/h, and coolant admission velocity is 7m/s, and temperature is
25 DEG C, coolant back-flow velocity is 8m/s, and temperature is 45 DEG C, and coolant shower nozzle flow velocity is 10m/s, body of a gun outer tube a length of 2.18~
2.22m, a length of 3.18~3.22m of body of a gun middle tube, central oxygen pipe range are 4.18~4.22m, spray gun internal diameter is 0.175~
0.185m, spout are Raoul tubular construction, and minor axis is 0.049~0.051m, and length is 0.018~0.022m, and wide footpath is 0.065
~0.069m, 0.093~0.097m of total length, coolant are not easy incrusted cooling water to be treated；Lance cools down
Flow quantity is 100t/h, and coolant admission velocity is 5m/s, and temperature is 19 DEG C, and coolant back-flow velocity is 6m/s, temperature 38
DEG C, coolant shower nozzle flow velocity is 8m/s, and spray gun internal diameter is 0.18~0.22m, and spout is Raoul tubular construction, minor axis 0.050
~0.054m, length are 0.019~0.021m, and wide footpath is 0.066~0.068m, 0.09~0.11m of total length, the outer pipe range of the body of a gun
For 2.48~2.52m, a length of 3.48~3.52m of body of a gun middle tube, central oxygen pipe range is 4.48~4.52m, three of oxygen spray gun
Spout central line and vertical angle are 12 °, and oxygen spray gun material is copper, and coolant is preferable, the preferable liquid object of mobility of conducting heat
Matter, such as impure less iundustrial oil.Bottom injection high temperature argon carries out the stirring to bottom, and furnace bottom air jet system uses
MHP-D type technology pipe bricks, and external connection feeder can adjust air demand size.
Using the system of above-mentioned processing molten state copper ashes, molten state copper ashes is handled according to the following steps：
(1) 100 parts of molten state copper ashes is loaded in body of heater by body of heater top end opening, then says lower coal powder lance to upper of furnace body
1/3rd and coal dust is sprayed at furnace bottom 4.19m, coal dust transport and sprayed into by nitrogen, while bottom of furnace body is using spraying
Blowing apparatus injection argon gas is stirred, and the amount for being blown into argon gas is 25 parts, and it is 130m/s to be blown into speed.Lift coal powder lance afterwards, will
Lance drops at furnace bottom 4m the oxygen for being blown and being mixed with 15 parts of lime in advance, and penetrating speed is 350m/s, is used simultaneously
Bottom-blowing device is blown into argon gas with the 220m/s speed that is blown into, follow-up to stop spraying into oxygen, and argon gas is blown into speed and is reduced to
140m/s, it is blown into argon gas 1.5min.
(2) 100 parts of molten state copper ashes are loaded by body of heater top end opening again, declines coal powder lance to apart from slag iron liquid level 0.5m
Place carries out coal powder injection operation, drops to lance the oxygen for being mixed with lime is highly sprayed into coal powder lance identical afterwards, while bottom
Blowing argon gas carry out auxiliary stirring.
(3) for repeat step (2) until slag iron liquid level reaches 3.8m in body of heater, the ball that will slag tap is put into body of heater, and by profit
With fixing device, body of heater is tilted to slag notch direction, wherein, ball of slagging tap be density between molten iron and slag, slag can be suspended in
Iron interface and the globular solids do not reacted with molten iron or slag, can be put according to the iron-holder and input amount of handled copper ashes
Slag operation.After completion is slagged tap, the tapping hole for opening lower portion of furnace body carries out operation of tapping a blast furnace, after molten iron level is less than tapping hole, profit
Body of heater is tilted to slag notch direction with fixing device, in order to continue to tap a blast furnace.After tailings discharge is water cooled, it can be used as and make water
The raw material of mud, insulation operation is carried out into ladle after molten iron discharge, can be used for making steel.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (10)
- A kind of 1. system for handling molten state copper ashes, it is characterised in that including：Body of heater, the top of the body of heater have opening, molten bath are defined in the body of heater, and the top of the sidewall of the furnace body has Cinder notch, bottom have tapping hole；Lance, the lance stretch into the inside of the body of heater by described be open；Coal powder lance, the coal powder lance stretch into the inside of the body of heater by described be open；Bottom-blowing device, the bottom-blowing device are arranged on below the body of heater and are communicated to the body of heater by the bottom wall of the body of heater Inside；Smoke gas collecting apparatus, the smoke gas collecting apparatus is located at the top of the opening, and is produced suitable for collecting in the body of heater Raw flue gas；Heat-exchanger rig, the heat-exchanger rig have high-temperature flue gas entry, low-temperature flue gas outlet, cryogenic inert gas entrance and high temperature Inert gas outlet, the high-temperature flue gas entry are connected with the smoke gas collecting apparatus, the high temperature inert gas outlet and institute Bottom-blowing device is stated to be connected.
- 2. the system of processing molten state copper ashes according to claim 1, it is characterised in that further comprise：Fixing device, the fixing device includes two steady arms and two rotary shafts, described two steady arms pass through described two Individual rotary shaft is connected to the both sides of the body of heater.
- 3. the system of processing molten state copper ashes according to claim 2, it is characterised in that the fixing device is using suspension It is fixed.
- 4. the system of processing molten state copper ashes according to claim 2, it is characterised in that the fixing device is using support It is fixed.
- 5. the system of processing molten state copper ashes according to claim 1, it is characterised in that the body of heater is cylindrical, institute The length ratio for stating the height and external diameter of body of heater is (1.2~1.4):1.
- 6. the system of processing molten state copper ashes according to claim 1, it is characterised in that the side wall and bottom wall of the body of heater Between be in arc transition.
- 7. the system of processing molten state copper ashes according to claim 6, it is characterised in that the internal diameter of the body of heater is 6.00 ~6.02m, a diameter of 4.108~4.306m of the body of heater bottom wall.
- A kind of 8. side of the system processing molten state copper ashes of processing molten state copper ashes using described in any one of claim 1~7 Method, it is characterised in that including：(1) molten state copper ashes is supplied to the body of heater by the opening on the body of heater top；(2) inert gas is supplied into the body of heater using the bottom-blowing device, and using the inert gas to the body of heater Interior material is stirred；(3) reduction coal is blown into the body of heater using the coal powder lance；(4) oxidizing gas is blown into the body of heater using the lance；And(5) the molten state copper ashes, the coal dust and the oxidizing gas are subjected to metallurgy, to obtain molten iron and tail Slag.
- 9. according to the method for claim 8, it is characterised in that the speed that is blown into of the reduction coal is 130~140m/s, institute The speed that is blown into for stating oxidizing gas is 340~380m/s.
- 10. according to the method for claim 8, it is characterised in that the temperature of the metallurgy is 1260~1280 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711019033.0A CN107674986A (en) | 2017-10-26 | 2017-10-26 | The system and method for handling molten state copper ashes |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711019033.0A CN107674986A (en) | 2017-10-26 | 2017-10-26 | The system and method for handling molten state copper ashes |
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| Publication Number | Publication Date |
|---|---|
| CN107674986A true CN107674986A (en) | 2018-02-09 |
Family
ID=61141618
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|---|---|---|---|
| CN201711019033.0A Pending CN107674986A (en) | 2017-10-26 | 2017-10-26 | The system and method for handling molten state copper ashes |
Country Status (1)
| Country | Link |
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| CN (1) | CN107674986A (en) |
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2017
- 2017-10-26 CN CN201711019033.0A patent/CN107674986A/en active Pending
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