CN106048254A - Continuous smelting device and method of nickel-containing material - Google Patents
Continuous smelting device and method of nickel-containing material Download PDFInfo
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- CN106048254A CN106048254A CN201610574872.8A CN201610574872A CN106048254A CN 106048254 A CN106048254 A CN 106048254A CN 201610574872 A CN201610574872 A CN 201610574872A CN 106048254 A CN106048254 A CN 106048254A
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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
- C22B23/00—Obtaining nickel or cobalt
- C22B23/02—Obtaining nickel or cobalt by 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
Abstract
The invention discloses a continuous smelting device of a nickel-containing material. The continuous smelting device is characterized in that the device comprises a smelting furnace, an electric poor furnace and a converting furnace, wherein a feed port, a smelting slag outlet, a low-nickel matte outlet and a smelting furnace converting slag return port are formed in the smelting furnace, a smelting slag inlet, an electric poor furnace slag outlet, a poor low-nickel matte outlet and an electric poor furnace converting slag return port are formed in the electric poor furnace, a low-nickel matte inlet, a flux inlet, a converting slag outlet and a high-nickel matte outlet are formed in the converting furnace, the smelting slag outlet is connected with the smelting slag inlet by virtue of a smelting slag chute, and the low-nickel matte outlet is connected with the low-nickel matte inlet by virtue of a low-nickel matte chute. According to the continuous smelting device and a method of the nickel-containing material, the continuous high-nickel matte production process with a pyrogenic process is realized, the smelting process is implemented in an assembly line, and the labor productivity is greatly increased.
Description
Technical field
The present invention relates to the device and method of a kind of nickel-containing material melting continuously, belong to the pyrometallurgical smelting scope of metallic nickel.
Background technology
Currently, produce nickel matte from nickel ore concentrate (or ambrose alloy composite ore) both at home and abroad and have following several process:
(1) nickel ore concentrate (or ambrose alloy composite ore) uses shaft smelting to produce low nickel matte, and low nickel matte enters P-S and bessemerizes into
Nickel matte.Blowing slag cold conditions returns blast furnace, reclaims wherein valuable metal.
(2) nickel ore concentrate (or ambrose alloy composite ore) uses ore-smelting electric furnace to produce low nickel matte, and low nickel matte enters P-S and bessemerizes into
Nickel matte, blow slag hot return ore-smelting electric furnace, reclaims wherein valuable metal.
(3) nickel ore concentrate (or ambrose alloy composite ore) uses Flash Smelting Furnace to produce low nickel matte, and low nickel matte enters P-S and bessemerizes into nickel
Sulfonium.Blowing slag hot entrance slag cleaning furnace, reclaims wherein valuable metal.
(4) nickel ore concentrate (or ambrose alloy composite ore) uses the Ausmelt Smelting Furnace of top blast and slag cleaning furnace to produce low nickel matte,
Low nickel matte enters P-S and bessemerizes into nickel matte.Blowing slag cold conditions returns Ausmelt Smelting Furnace, and reclaims wherein through slag cleaning furnace
Valuable metal.
(5) nickel ore concentrate (or ambrose alloy composite ore) uses vertical bilateral blown converter to produce low nickel matte, and low nickel matte enters P-S and bessemerizes
Become nickel matte.The blowing hot return of slag vertical bilateral blown converter, output smelting slag reclaims wherein valuable metal through slag cleaning furnace dilution.
(6) nickel ore concentrate (or ambrose alloy composite ore) uses the Ausmelt Smelting Furnace of top blast and slag cleaning furnace to produce low nickel matte,
Low nickel matte shrend becomes particulate material, enters another Ausmelt converting furnace after drying and blow into nickel matte.Blowing slag cold conditions is returned
Returning Ausmelt Smelting Furnace, output smelting slag reclaims wherein valuable metal through slag cleaning furnace.
Technique (1) and (2), because energy consumption is high, efficiency is low, environmental pollution is serious, are eliminated.
Technique (3), (4), (5), (6) commercial production at present there is application, but all there are some the most formidable shortcomings:
Technique (3), (4) and (5) blowing operation all uses P-S converter, is periodic breaks operation owing to P-S bessemerizes, low nickel matte
Need to be with low nickel matte bag, cinder ladle, be had bad luck in workshop by heavy metallurgy crane with blowing slag, and P-S converter charging and going out
Material flue gas is difficult to fully seal, and causes S02 flue gas low latitude loss to pollute, and this exhaust gas volumn is big, and SO2 concentration is low, be difficult to thoroughly control
Reason, has been not suitable for the strictest environmental requirement.Additionally P-S converter is also consumed by a large amount of refractory material, and production cost is relatively
High.Technique (6) is though blowing without P-S, but investment is big, and energy consumption is high, and low nickel matte needs shrend, is dried, and could enter blowing operation, ease
Scattered smoke pollution is not easy to reason the most processed.Additionally, the fusion process of technique (3) is complicated, investment is big, fusion process direct yield is low；
The technique fusion process investment of technique (4) is big, consumes height.
Summary of the invention
The problem existed for above-mentioned prior art, the present invention provides that a kind of working environment is friendly, energy consumption is low, reduced investment,
The device and method of the nickel-containing material melting continuously that resource recovery is high.
Above-mentioned purpose is realized by following proposal:
The device of a kind of nickel-containing material melting continuously, it is characterised in that this device includes smelting furnace, slag cleaning furnace and converting furnace,
Wherein, smelting furnace is provided with charge door, smelting slag discharge port, low nickel matte discharge port, smelting furnace blowing slag return port, slag cleaning furnace
It is provided with low nickel matte discharge port, slag cleaning furnace blowing slag return port after smelting slag import, slag cleaning furnace slag discharge port, dilution, blows
Furnace is provided with low nickel matte import, flux import, blowing slag discharge port, high nickel matte discharge port, and described smelting slag discharge port is with molten
Refining slag import is connected by smelting slag chute, and described low nickel matte discharge port is connected by low nickel matte chute with low nickel matte import.
According to above-mentioned device, it is characterised in that described smelting furnace furnace roof is provided with gas melting furnace flue outlet, smelting furnace cigarette
Gas outlet is connected with smelting furnace waste heat boiler by smelting furnace thermal insulation flue；Described converting furnace top is provided with converting furnace flue gas and goes out
Mouthful, converting furnace exhanst gas outlet is connected with converting furnace waste heat boiler by converting furnace thermal insulation flue；Described slag cleaning furnace is provided with lean
Change electric furnace flue gas outlet.
According to above-mentioned device, it is characterised in that described smelting furnace is vertical pair of side-blown smelting furnace, described converting furnace is perpendicular
Formula bilateral blows converting furnace.
According to above-mentioned device, it is characterised in that described converting furnace is provided with compressed air inlet, this compressed air inlet
It is positioned at below low nickel matte import；Described converting furnace is provided with air port, and this air port is positioned at the minimum of converting furnace stove both walls Copper Water Jacket
Place, and the air-supply passage in this air port is downward-sloping.
A kind of method using above-mentioned device that nickel-containing material is carried out melting continuously, it is characterised in that the step of the method
Suddenly include:
(1) nickel-containing material, smelting fusing agent, fuel are added in smelting furnace by charge door, carry out melting reaction, generate low nickel
Sulfonium, smelting slag and flue dust, low nickel matte and smelting slag complete to separate in smelting furnace；
(2) the low nickel matte in step (1) flows automatically in entrance converting furnace by low nickel matte discharge port and low nickel matte chute, meanwhile, to
Flux import adds blowing flux, carries out blowing reaction, generate high nickel matte, blowing slag and flue gas, high nickel matte and blowing slag and exist
Complete in the settling zone of converting furnace to separate；
(3) smelting slag in step (1) carries out lean in entering slag cleaning furnace by smelting slag discharge port and the gravity flow of smelting slag chute
Changing, produce slag and flue gas after low nickel matte, dilution after dilution, wherein, the low nickel matte produced after dilution low nickel matte after dilution is released
Mouthful flow out, condensed broken after, join in converting furnace flux import with the form of the low nickel matte of solid-state, blow；After dilution
After the dilution produced, slag carries out shrend after being released by slag cleaning furnace slag discharge port；
(4) the high nickel matte in step (2) is flowed out by high nickel matte discharge port, carries out slow cooling, ore dressing, or direct-water-quenching；
(5) the blowing slag in step (2) carries out melting by smelting furnace blowing slag return port Returning smelting stove, or by dilution electricity
Stove blowing slag return port returns slag cleaning furnace and carries out dilution, or open circuit reclaims valuable metal.
According to the above-mentioned method that nickel-containing material is carried out melting continuously, it is characterised in that described nickel-containing material includes sulfur
Change nickel ore concentrate, ambrose alloy concentrate, nickel ore, high-grade primary ambrose alloy lump ore, also include returning flue dust, blowing slag.
According to the above-mentioned method that nickel-containing material is carried out melting continuously, it is characterised in that in step (4), when high nickel matte
When middle Fe mass content is 2%～4%, the high nickel matte of output carries out slow cooling, ore dressing；When in high nickel matte, Fe mass content is 1%
Time following, the high nickel matte direct-water-quenching of output.
According to the above-mentioned method that nickel-containing material is carried out melting continuously, it is characterised in that in step (5), when blowing slag
When the mass content of middle cobalt is less than 0.3%, blowing slag carries out melting by smelting furnace blowing slag return port Returning smelting stove, or logical
Cross slag cleaning furnace blowing slag return port return slag cleaning furnace and carry out dilution；When in blowing slag, the mass content of cobalt is more than 0.3%
Time, the electric furnace smelting equipment that blowing slag is opened a way other is smelted cobalt sulfonium, is reclaimed valuable metal.
According to the above-mentioned method that nickel-containing material is carried out melting continuously, it is characterised in that in step (1), smelting temperature
It it is 1250 DEG C～1450 DEG C；The mass percent of the essential element of the low nickel matte of output: Ni Yu Cu sum is 20%～45%, Fe
Be 20%～50%, S be 22%～27%；The smelting slag of output is SiO2-FeO-MgO-CaO-Al2O3Multicomponent mixture slag system.
According to the above-mentioned method that nickel-containing material is carried out melting continuously, it is characterised in that in step (2), blow temperature
It it is 1250 DEG C～1350 DEG C；The mass percent of the essential element of the high nickel matte of output: Ni and Cu is 70%～75%, and Fe is
0.6%～4%, S are 20%～22%；The blowing slag of output is mainly composed of 2FeO SiO2, slag contains the quality hundred of Ni and Cu
Proportion by subtraction is 1.5%～3.5% altogether.
Beneficial effects of the present invention:
The device and method of the nickel-containing material melting continuously of the present invention achieves pyrogenic process and produces the serialization of high nickel matte technical process,
Smelting process is line configurations, device compact in design, is conducive to producing continuously, and low nickel matte and smelting slag have employed chute gravity flow
From fortune configuration, it is not necessary to crane is had bad luck, and labor productivity is greatly improved；Meanwhile, the scattered flue gas that overflows of assembly of the invention ring collection is big
Width reduces, exhaust gas volumn continuous-stable, SO after mixing2Concentration, still more than 18%, meets three-conversion three-absorption antacid requirement, total system
The capture rate of sulfur > more than 99.9%.
Accompanying drawing explanation
Fig. 1 is the structural representation of apparatus of the present invention.
Fig. 2 is the structural representation of apparatus of the present invention.
Fig. 3 is the process chart of the present invention.
Detailed description of the invention
As depicted in figs. 1 and 2, the device of the nickel-containing material melting continuously of the present invention includes smelting furnace 1, slag cleaning furnace 2 and
Converting furnace 3, wherein, smelting furnace 1 be provided with charge door 4, smelting slag discharge port 8, low nickel matte discharge port 5, smelting furnace blowing slag return
Answering back 13, slag cleaning furnace 2 is provided with low nickel matte discharge port 17 after smelting slag import 15, slag cleaning furnace slag discharge port 20, dilution, lean
Changing electric furnace blowing slag return port 22, converting furnace 3 is provided with low nickel matte import 25, flux import 27, blowing slag discharge port 33, nickelic
Sulfonium discharge port 30.Smelting slag discharge port 8 is directly connected to smelting slag import 15 by smelting slag chute 9, and low nickel matte discharge port 5 leads to
Too low nickel matte chute 6 is directly connected to low nickel matte import 25.Wherein, smelting furnace 1 is vertical pair of side-blown smelting furnace, and converting furnace 3 is
Vertical bilateral blows converting furnace.
In use, can as required the axis of three metallurgical furnaces be arranged on the same line or identical in direction
Different straight lines on.Low nickel matte and smelting slag have employed chute gravity flow from transporting configuration, it is not necessary to crane is had bad luck；Blowing slag needs to hang
Car is had bad luck but is had bad luck apart from shorter, therefore can increase substantially labor productivity.Smelting process is line configurations, device layout
Compact, be conducive to producing continuously, cleaning can be realized and produce.Three stoves are fixed-bed structure, safe and reliable.
Converting furnace 3 is provided with compressed air inlet 26, and compressed air inlet 26 is positioned at below low nickel matte import 25, and being used for will
Low nickel matte dispels so that it is be dispersed in molten bath.Converting furnace 3 is provided with air port 28, and air port 28 is positioned at converting furnace 3 stove both walls copper water
The lowest part of set, and the air-supply passage in air port is downward-sloping.
In addition, smelting furnace 1 furnace roof is provided with gas melting furnace flue outlet 10, and smelting furnace is passed through in gas melting furnace flue outlet 10
Adiabatic flue 11 is connected with smelting furnace waste heat boiler 12.Converting furnace 3 furnace roof is provided with converting furnace exhanst gas outlet 36, converting furnace flue gas
Outlet 36 is connected with converting furnace waste heat boiler 38 by converting furnace thermal insulation flue 37.Slag cleaning furnace 2 is provided with slag cleaning furnace flue gas
Outlet 24.
The technological process using assembly of the invention that nickel-containing material is carried out melting continuously is as follows:
The nickel-containing material of the present invention includes nickel sulfide concentrate, ambrose alloy concentrate, nickel ore, high-grade primary ambrose alloy lump ore, also wraps
Include return flue dust, blowing slag etc..
By nickel-containing material, smelting fusing agent, fuel through feeding belt 41, add in smelting furnace 1 by charge door 4, by molten
Primary air nozzle 39 and the overfiren air port 40 of furnace 1 sidewall are continuously introduced into oxygen-enriched air in smelting furnace 1, carry out in smelting furnace 1
Melting reaction, continuously generates low nickel matte, smelting slag and flue dust, low nickel matte and smelting slag and completes to separate in smelting furnace 1.
Low nickel matte in smelting furnace 1 is flow automatically by low nickel matte discharge port 5 and low nickel matte chute 6 and enters in converting furnace 3, and quilt
It is located in a compressed air inlet 26 under low nickel matte import 25 compressed air flowed into dispel, becomes scattered about in molten bath.Blowing
The lowest part of sidepiece Copper Water Jacket, and the downward-sloping certain angle of air-supply passage are located in the air port 28 of stove 3 both walls, it is ensured that oxygen-enriched
Air is blown into nickelic matte layer.Air port is continually fed into oxygen-enriched air, and in flux import 27, continuous print adds flux, is carried out continuously and blows
Refining reaction, continuous output height nickel matte, blowing slag and flue gas, high nickel matte and blowing slag complete to separate in the settling zone of converting furnace 3.
In converting furnace 3, the high nickel matte of output is released by high nickel matte discharge port 30, through high nickel matte chute 31 from flowing into nickelic sulfonium
Bag 32, sends to slow cooling ore dressing or direct-water-quenching.Wherein, when in high nickel matte, Fe mass content is 2%～4%, output nickelic
Sulfonium carries out slow cooling, ore dressing；When in high nickel matte, Fe mass content is less than 1%, the high nickel matte direct-water-quenching of output.
The smelting slag generated in smelting furnace flows out from smelting slag discharge port 8, continuously by smelting slag chute 9 continuous self-flowing
Enter dilution continuously in slag cleaning furnace 2, produce slag and flue gas after low nickel matte, dilution after dilution, in the process in smelting slag
The valuable metals such as Ni, Cu, Co enter in low nickel matte.The low nickel matte of slag cleaning furnace 2 output periodically after dilution low nickel matte put
Outlet 17 releasing, after dilution, low nickel matte bag 19 put into by low nickel matte chute 18, is hung away by hoisting overhead travelling crane subsequently, condensed broken
After, join in converting furnace 3 flux import 27 with the form of the low nickel matte of solid-state, blow.After the dilution of slag cleaning furnace 2 output
Slag enters slag cleaning furnace slag chute 21 after being released by slag cleaning furnace slag discharge port 20, stores up or sell after shrend.
In converting furnace 3, the blowing slag of output is released by blowing slag discharge port 33, enters blowing slag through blowing slag chute 34
In bag 35, and being sling by hoisting overhead travelling crane, hot smelting furnace blowing slag of pouring into returns chute 14, by smelting furnace blowing slag return port
13 Returning smelting stoves 1 carry out melting, reclaim valuable metal, or hot slag cleaning furnace blowing slag of pouring into returns chute 23, by lean
Change electric furnace blowing slag return port 22 to return slag cleaning furnace 2 and carry out dilution, reclaim valuable metal, or open circuit reclaim metal.Wherein, when
When in blowing slag, the mass content of cobalt is less than 0.3%, blowing slag is melted by smelting furnace blowing slag return port Returning smelting stove
Refining, or carry out dilution by slag cleaning furnace blowing slag return port return slag cleaning furnace；When in blowing slag, the mass content of cobalt is
When more than 0.3%, the electric furnace smelting equipment that blowing slag is opened a way other smelts cobalt sulfonium, reclaims the valuable metals such as Co, Ni, Cu.
In the present invention, the flue gas of smelting furnace 1 output enters smelting furnace thermal insulation flue 11 by gas melting furnace flue outlet 10,
Smelting stove thermal insulation flue 11 enters smelting furnace waste heat boiler 12, produces the saturated of about 4MPa in smelting furnace waste heat boiler 12
Steam, reclaims its waste heat.The flue gas of converting furnace 3 output enters converting furnace thermal insulation flue 37, warp by converting furnace exhanst gas outlet 36
Converting furnace thermal insulation flue 37 enters converting furnace waste heat boiler 38, produces the saturated steaming of about 4MPa in converting furnace waste heat boiler 38
Vapour, reclaims its waste heat.The flue gas produced in the flue gas of output and converting furnace 3 in smelting furnace 1 is by respective waste heat boiler
After lowering the temperature, flue-gas temperature drops to 350 DEG C～400 DEG C, send antacid cleaning system after entering back into the further dedusting of cottrell.
The humidified rear Returning smelting stove 1 of flue dust that smelting furnace waste heat boiler 12 and converting furnace waste heat boiler 38 and cottrell are collected.Lean
The flue gas changed in electric furnace 2 is discharged by slag cleaning furnace exhanst gas outlet 24, the flue gas of discharge and each discharge port, chute, cinder ladle collection cigarette
After the flue gas that cover is collected collects, directly send antacid cleaning system.
The scattered flue gas that overflows of assembly of the invention ring collection is greatly decreased than foregoing background technique, and each discharge port, chute, cinder ladle are received
The flue gas of collection and slag cleaning furnace produce flue gas and pool together entrance antacid cleaning system, exhaust gas volumn continuous-stable, SO after mixing2Dense
Degree still meets three-conversion three-absorption antacid requirement more than 18%.Ring collection fume treatment operation etc. is eliminated compared with background technology,
Operating environment excellent in guaranteeing workshop, it is ensured that the capture rate of total system sulfur > more than 99.9%.
The smelting furnace of the present invention and the process conditions of converting furnace:
Smelting furnace smelting temperature is 1250 DEG C～1450 DEG C, the mass percent of the essential element of the low nickel matte of output: Ni and Cu
Sum is 20%～45%, Fe is 20%～50%, S is 22%～27%；The smelting slag of output is SiO2-FeO-MgO-CaO-
Al2O3Multicomponent mixture slag system.For ensureing the minimum mobility with slag of valuable metal loss in slag, need to be according to raw ore gangue content
Allocating appropriate smelting fusing agent into, smelting fusing agent is typically chosen in quartz and limestone.
Converting furnace blowing temperature is 1200 DEG C-1300 DEG C；The mass percent of the essential element of the high nickel matte of output: Ni and
Cu is 70%～75%, and Fe is 0.6%～4%, and S is 20%～22%；The blowing slag of output is mainly composed of 2FeO SiO2, slag
In be 1.5%～3.5% containing the mass percent work of Ni and Cu.Blowing flux is generally quartz.
Slag cleaning furnace can select Alternating Current Power Supply, it is also possible to selects direct current supply.The electrode of slag cleaning furnace can use graphite
Electrode or self-baking electrode.Slag cleaning furnace operation has and adds depletion agent and be not added with depletion agent two kinds, can select as required.
The links that the present invention is smelted by the monitoring of a set of DCS control system.
In Fig. 2 and Fig. 3,7 is smelting furnace electrode, and 16 is slag cleaning furnace electrode, and 29 is converting furnace electrode.
Below by specific embodiment, the present invention is further described.In embodiment, the percent of chemical composition refers both to
Mass percent.
Embodiment 1
Raw materials for metallurgy is middle-low grade ambrose alloy concentrate, and composition: Ni 5.3%, Cu～2.2%(" Cu～2.2% " represent Cu mass
Percentage composition is about 2.2%, lower with), Fe～28%, S～29%, MgO～7%, SiO2～14%, CaO 1.5%, Al2O3 1%。
(1) the ambrose alloy concentrate of mentioned component and return flue dust, flux (quartz, limestone) and anthracite, refer to according to DCS
Order after measuring belt scale measures, is pooled on feeding belt 41, delivers to charge door 4 and add in smelting furnace 1 respectively, oxygen-enriched air
Carry out melting reaction in sending into stove by the primary air nozzle 39 of smelting furnace 1 and overfiren air port 40, smelting furnace smelting temperature be～
1400℃。
Mixed material generates low nickel matte, smelting slag and the flue gas of molten condition through high-temperature chemical reaction, and completes in stove
Low nickel matte and the separation of smelting slag.
Low nickel matte composition is as follows: Ni～15%, Cu～7.5%, S～27%, Fe～43%；
Smelting slag SiO2～43%, Fe～26%, MgO～11%, CaO～3%.
SO in gas melting furnace flue composition218%～30%.Dust rate 1.5%～2%.
(2) the low nickel matte that smelting furnace 1 generates, is flow automatically by low nickel matte discharge port 5 and low nickel matte chute 6 and enters converting furnace 3
In, and dispelled by the compressed air flowed in compressed air inlet 26, become scattered about in molten bath.Oxygen-enriched air is sent into by air port 28
In converting furnace molten bath, while sending oxygen-enriched air blowing, melt by the addition of slag making required amount continuous and quantitative from flux import 27
Agent quartz, low nickel matte continuous converting becomes high nickel matte, blowing slag and flue gas.High nickel matte and blowing slag complete in settling zone to separate.
Converting furnace blowing temperature controls at 1200 DEG C-1300 DEG C.
Converting furnace produces high nickel matte containing Ni～50.4%, Cu～24.5%, S～22%, Fe 2%～4%.
This high nickel matte is put into high nickel matte bag 31 by high nickel matte discharge port 29 and high nickel matte chute 30 and is sent under slow cooling, entrance
The broken beneficiating process of step.
(3) blowing slag is mainly composed of 2FeO SiO2, slag contains (Ni+Cu) 1.5%～3.0%.Blowing slag passes through overflow
Blowing slag outlet 32 releasing, enter blowing cinder ladle 34 through chute 33, and sling by hoisting overhead travelling crane, hot pour smelting furnace blowing slag into
Return chute 14 by smelting furnace blowing slag return port 13 Returning smelting stove 1 or to pour slag cleaning furnace blowing slag into and return chute 23 and lead to
Cross slag cleaning furnace blowing slag return port 22 and return slag cleaning furnace 2 dilution.
The produced flue gas of converting furnace contains SO2Flue gas 15%～20%；Dust-laden about 1%.
(4) slag of smelting furnace 1 output is SiO2-FeO-CaO-MgO multicomponent slag, from smelting slag discharge port 8, melting
Slag chute 9, continuous self-flowing enters slag cleaning furnace 2 dilution.
Produced after dilution low nickel matte periodically after dilution low nickel matte discharge port 17 release, after dilution, low nickel matte chute 18 is put
Enter low nickel matte bag 19, hoisting overhead travelling crane hang away, after condensation is broken, send converting furnace 3 to blow through flux import 27.
The produced slag of slag cleaning furnace 2 is released from slag cleaning furnace slag discharge port 20, through slag cleaning furnace slag chute 21 direct-water-quenching
Rear sale or store up.
The produced flue gas of slag cleaning furnace 2 is entered ring collecting system by exhanst gas outlet 24, enters antacid after collecting.
(5) smelting furnace 1, converting furnace 3 output flue-gas temperature at 1200 DEG C～1400 DEG C.High-temperature flue gas is by each setting
Outlet flue at furnace roof sequentially enters adiabatic flue and waste heat boiler, completes depositing dust and cooling, flue-gas temperature in waste heat boiler
Antacid cleaning system is sent after dropping to 350 DEG C～400 DEG C of further dedustings of power transmission dust-precipitator.
(6) flue dust that smelting furnace 1 and the waste heat boiler of converting furnace 3 and cottrell are collected, delivers to material in the middle of smelting furnace
Storehouse, the humidified rear quantitatively return laggard smelting furnace of dispensing；All flue dust are arranged on not to be had in the closed conveying system of airborne dust to enter
Row processes.
Embodiment 2
Raw materials for metallurgy is high-grade nickel concentrate, composition: Ni 12%, Cu 0.8%, Fe 36.8%, S 31.9%, MgO 4.6%,
SiO2 8.7%、CaO1.0%、Al2O3 1.5%。
(1) nickel ore concentrate of mentioned component with return flue dust, flux (quartz, limestone) and anthracite, refer to according to DCS
Order after measuring belt scale measures, is pooled on feeding belt 41, delivers to charge door 4 and add in smelting furnace 1 respectively, oxygen-enriched air
Carrying out melting reaction in sending into stove by the primary air nozzle 39 of smelting furnace 1 and overfiren air port 40, smelting furnace smelting temperature controls
1350℃。
Mixed material generates low nickel matte, smelting slag and the flue gas of molten condition through high-temperature chemical reaction, and completes in stove
Low nickel matte and the separation of smelting slag.
Low nickel matte composition is as follows: Ni～39%, Cu 2.5%～3.0%, S～27%, Fe～28%.
Smelting slag SiO2～40%, Fe～30%, MgO～5%, CaO 3%～5%.
SO in gas melting furnace flue composition218%～30%.Dust rate 1.5%～2%.
(2) the low nickel matte that smelting furnace 1 generates, is flow automatically by low nickel matte discharge port 5 and low nickel matte chute 6 and enters converting furnace 3
In, and dispelled by the compressed air flowed in compressed air inlet 26, become scattered about in molten bath.Oxygen-enriched air is sent into by air port 28
In converting furnace molten bath, while sending oxygen-enriched air blowing, melt by the addition of slag making required amount continuous and quantitative from flux import 27
Agent quartz, low nickel matte continuous converting becomes high nickel matte, blowing slag and flue gas.High nickel matte and blowing slag complete in settling zone to separate.
Converting furnace blowing temperature controls at 1200 DEG C-1300 DEG C.
Converting furnace produced high nickel matte containing Ni 69%～71%, Cu 4%～5%, S～20%, containing Fe less than 1%, this height
Nickel matte is flow automatically direct-water-quenching by high nickel matte discharge port 29 and high nickel matte chute 30, and shrend height nickel matte send lower step wet method operation.
(3) blowing slag is mainly composed of 2FeO SiO2, slag contains (Ni+Cu) 1.5%～3.0%.Blowing slag passes through overflow
Blowing slag outlet 32 releasing, enter blowing cinder ladle 34 through chute 33, and sling by hoisting overhead travelling crane, hot pour smelting furnace blowing slag into
Return chute 14 by smelting furnace blowing slag return port 13 Returning smelting stove 1 or to pour slag cleaning furnace blowing slag into and return chute 23 and lead to
Cross slag cleaning furnace blowing slag return port 22 and return slag cleaning furnace 2 dilution.
The produced flue gas of converting furnace contains SO2Flue gas 15%～20%；Dust-laden about 1%.
(4) slag of above-mentioned vertical pair of side-blown smelting furnace () output is SiO2-FeO-CaO-MgO multicomponent slag, from
Smelting slag discharge port 8, smelting slag chute 9, continuous self-flowing enters slag cleaning furnace 2 dilution.
Produced after dilution low nickel matte periodically after dilution low nickel matte discharge port 17 release, after dilution, low nickel matte chute 18 is put
Enter low nickel matte bag 19, hoisting overhead travelling crane hang away, after condensation is broken, send converting furnace 3 to blow through flux import 27.
The produced slag of slag cleaning furnace 2 is released from slag cleaning furnace slag discharge port 20, through slag cleaning furnace slag chute 21 direct-water-quenching
Rear sale or store up.
The produced flue gas of slag cleaning furnace 2 is entered ring collecting system by exhanst gas outlet 24, enters antacid after collecting.
(5) smelting furnace 1, converting furnace 3 output flue-gas temperature at 1200 DEG C～1350 DEG C.High-temperature flue gas is by each setting
Outlet flue at furnace roof sequentially enters adiabatic flue and waste heat boiler, completes depositing dust and cooling, flue-gas temperature in waste heat boiler
Antacid cleaning system is sent after dropping to 350 DEG C～400 DEG C of further dedustings of power transmission dust-precipitator.
(6) flue dust that smelting furnace 1 and the waste heat boiler of converting furnace 3 and cottrell are collected, delivers to material in the middle of smelting furnace
Storehouse, the humidified rear quantitatively return laggard smelting furnace of dispensing；All flue dust are arranged on not to be had in the closed conveying system of airborne dust to enter
Row processes.
Embodiment 3
Raw materials for metallurgy is that middle-low grade ambrose alloy concentrate adds nickel ore, wherein ambrose alloy concentrate composition: Ni 5%～6%, Co
0.12%, Cu 2.5%～3%, Fe 31%～32%, S 25%, MgO 8%, SiO2 12%、CaO 1.5%、Al2O31%；Nickel oxide
Ore deposit composition: Ni 2.5%, Cu 1.0%, Fe 17%, S 1%, SiO228%, MgO 20%, CaO 2%, Al2O34%.
(1) the ambrose alloy concentrate of mentioned component, nickel ore and return flue dust, flux (quartz, limestone) and anthracite,
According to DCS instruction respectively after measuring belt scale measures, it is pooled on feeding belt 41, delivers to charge door 4 and add smelting furnace 1
In, oxygen-enriched air carries out melting reaction, smelting furnace melting in sending into stove by the primary air nozzle 39 of smelting furnace 1 and overfiren air port 40
Temperature 1420 DEG C.
Mixed material generates low nickel matte, smelting slag and the flue gas of molten condition through high-temperature chemical reaction, and completes in stove
Low nickel matte and the separation of smelting slag.
Low nickel matte composition is as follows: Ni～17%, Cu～7.5%, S～27%, Fe～44%, Co～0.3%；
Smelting slag SiO240%～42%, Fe～30%, MgO～13%, CaO～4%.
SO in smoke components2Oxygen concentration is in close relations with using, and the most no longer enumerates.
(2) the low nickel matte that smelting furnace 1 generates, is flow automatically by low nickel matte discharge port 5 and low nickel matte chute 6 and enters converting furnace 3
In, and dispelled by the compressed air flowed in compressed air inlet 26, become scattered about in molten bath.Oxygen-enriched air is sent into by air port 28
In converting furnace molten bath, while sending oxygen-enriched air blowing, melt by the addition of slag making required amount continuous and quantitative from flux import 27
Agent quartz, low nickel matte continuous converting becomes high nickel matte, blowing slag and flue gas.High nickel matte and blowing slag complete in settling zone to separate.
Converting furnace blowing temperature controls at 1200 DEG C-1300 DEG C.
Produced high nickel matte containing Ni～51%, Cu～21.6%, Fe 0.6%, S～21.5%.High nickel matte passes through high nickel matte
Discharge port 29 and high nickel matte chute 30 flow automatically direct-water-quenching.
The produced flue gas of converting furnace contains SO2Flue gas 15%～20%；Dust-laden about 1%.
Blow the flue-gas temperature of converting furnace output at 1200 DEG C-1300 DEG C.
(3) blowing slag is mainly composed of 2FeO SiO2, slag contains (Ni+Cu) 1.5%～3.5%, and containing higher Co.
Blowing slag by overflow blowing slag outlet 32 releasing, enter blowing cinder ladle 34 through chute 33, and is sling by hoisting overhead travelling crane, hot send
Other electric furnace goes to refine cobalt sulfonium, reclaims valuable metal Co, Ni, Cu etc. in blowing slag.
The produced flue gas of converting furnace contains SO2Flue gas 15%～20%；Dust-laden about 1%.
(4) slag of smelting furnace 1 output is SiO2-FeO-CaO-MgO multicomponent slag, from smelting slag discharge port 8, melting
Slag chute 9, continuous self-flowing enters slag cleaning furnace 2 dilution.
Produced after dilution low nickel matte periodically after dilution low nickel matte discharge port 17 release, after dilution, low nickel matte chute 18 is put
Enter low nickel matte bag 19, hoisting overhead travelling crane hang away, after condensation is broken, send converting furnace 3 to blow through flux import 27.
The produced slag of slag cleaning furnace 2 is released from slag cleaning furnace slag discharge port 20, through slag cleaning furnace slag chute 21 direct-water-quenching
Rear sale or store up.
The produced flue gas of slag cleaning furnace 2 is entered ring collecting system by exhanst gas outlet 24, enters antacid after collecting.
(5) smelting furnace 1, converting furnace 3 output flue-gas temperature at 1200 DEG C～1420 DEG C, high-temperature flue gas is by each setting
Outlet flue at furnace roof sequentially enters adiabatic flue and waste heat boiler, completes depositing dust and cooling, flue-gas temperature in waste heat boiler
Antacid cleaning system is sent after dropping to 350 DEG C～400 DEG C of further dedustings of power transmission dust-precipitator.
(6) flue dust that smelting furnace 1 and the waste heat boiler of converting furnace 3 and cottrell are collected, delivers to material in the middle of smelting furnace
Storehouse, the humidified rear quantitatively return laggard smelting furnace of dispensing；All flue dust are arranged on not to be had in the closed conveying system of airborne dust to enter
Row processes.
Embodiment 4
Raw materials for metallurgy is that low ore grade nickel copper concentrate adds primary ambrose alloy lump ore, wherein ambrose alloy concentrate composition: Ni 2.84%, Cu
5.04%、Fe 30.04%、S 22%、MgO 8.31%、SiO219.68%、CaO 1.88%；Ambrose alloy lump ore composition: Ni 3.33%,
Cu 3.62%、Fe 48.80%、S 32.00%、MgO 2.16%、SiO2 5.77%、CaO 2.35%。
(1) the ambrose alloy concentrate of mentioned component allocates the primary ambrose alloy lump ore (being crushed to 0-5mm) of 1/2 into, and returns flue dust, molten
Agent (quartz, limestone) and anthracite, according to DCS instruction respectively after measuring belt scale measures, be pooled to feeding belt 41
On, to deliver to charge door 4 and add in smelting furnace 1, oxygen-enriched air sends into stove by primary air nozzle 39 and the overfiren air port 40 of smelting furnace 1
Inside carry out melting reaction.
Mixed material generates low nickel matte, smelting slag and the flue gas of molten condition through high-temperature chemical reaction, and completes in stove
Low nickel matte and the separation of smelting slag.
Smelting temperature controls at 1300 DEG C～1350 DEG C.
Low nickel matte composition is as follows: Ni～13.0%, Cu～18.4%, Fe～35.0%, S～26%.
Smelting slag: Ni 0.20%, Cu 0.28%, Fe 30.0%, SiO240.0%, MgO 5.0%, CaO 2.0%.
SO in smoke components2Oxygen concentration is in close relations with using, and the most no longer enumerates.
(2) the low nickel matte that smelting furnace 1 generates, is flow automatically by low nickel matte discharge port 5 and low nickel matte chute 6 and enters converting furnace 3
In, and dispelled by the compressed air flowed in compressed air inlet 26, become scattered about in molten bath.Oxygen-enriched air is sent into by air port 28
In converting furnace molten bath, while sending oxygen-enriched air blowing, melt by the addition of slag making required amount continuous and quantitative from flux import 27
Agent quartz, low nickel matte continuous converting becomes high nickel matte, blowing slag and flue gas.High nickel matte and blowing slag complete in settling zone to separate.
Converting furnace blowing temperature controls at 1200 DEG C-1300 DEG C.
Converting furnace produce high nickel matte containing Ni～31.0%, Cu～44.0%, Fe 0.6%, S～21.5%.
This high nickel matte passes through high nickel matte discharge port 29 and high nickel matte chute 30 direct-water-quenching.
(3) blowing slag is mainly composed of 2FeO SiO2, slag contains (Ni+Cu) 1.5%～3.0%.Blowing slag passes through overflow
Blowing slag outlet 32 releasing, enter blowing cinder ladle 34 through chute 33, and sling by hoisting overhead travelling crane, hot pour smelting furnace blowing slag into
Return chute 14 by smelting furnace blowing slag return port 13 Returning smelting stove 1 or to pour slag cleaning furnace blowing slag into and return chute 23 and lead to
Cross slag cleaning furnace blowing slag return port 22 and return slag cleaning furnace 2 dilution.
The produced flue gas of converting furnace contains SO2Flue gas 15%～20%；Dust-laden about 1%.
(4) slag of smelting furnace 1 output is SiO2-FeO-CaO-MgO multicomponent slag, from smelting slag discharge port 8, melting
Slag chute 9, continuous self-flowing enters slag cleaning furnace 2 dilution.
Produced after dilution low nickel matte periodically after dilution low nickel matte discharge port 17 release, after dilution, low nickel matte chute 18 is put
Enter low nickel matte bag 19, hoisting overhead travelling crane hang away, after condensation is broken, send converting furnace 3 to blow through flux import 27.
The produced slag of slag cleaning furnace 2 is released from slag cleaning furnace slag discharge port 20, through slag cleaning furnace slag chute 21 direct-water-quenching
Rear sale or store up.
The produced flue gas of slag cleaning furnace 2 is entered ring collecting system by exhanst gas outlet 24, enters antacid after collecting.
(5) smelting furnace 1, converting furnace 3 output flue-gas temperature at 1200 DEG C～1350 DEG C, high-temperature flue gas is by each setting
Outlet flue at furnace roof sequentially enters adiabatic flue and waste heat boiler, completes depositing dust and cooling, flue-gas temperature in waste heat boiler
Antacid cleaning system is sent after dropping to 350 DEG C～400 DEG C of further dedustings of power transmission dust-precipitator.
(6) flue dust that smelting furnace 1 and the waste heat boiler of converting furnace 3 and cottrell are collected, delivers to material in the middle of smelting furnace
Storehouse, the humidified rear quantitatively return laggard smelting furnace of dispensing；All flue dust are arranged on not to be had in the closed conveying system of airborne dust to enter
Row processes.
The present invention is simply described in more detail by above case study on implementation and explanation, is not intended to limit the guarantor of the present invention
Protect scope, without departing from the present invention spirit and design in the range of, those of ordinary skill in the art can carry out various changing
Enter or change, still falling within protection scope of the present invention.
Claims (10)
1. the device of a nickel-containing material melting continuously, it is characterised in that this device includes smelting furnace, slag cleaning furnace and blowing
Stove, wherein, smelting furnace is provided with charge door, smelting slag discharge port, low nickel matte discharge port, smelting furnace blowing slag return port, dilution
Electric furnace is provided with low nickel matte discharge port, slag cleaning furnace blowing slag return after smelting slag import, slag cleaning furnace slag discharge port, dilution
Mouthful, converting furnace is provided with low nickel matte import, flux import, blowing slag discharge port, high nickel matte discharge port, described smelting slag discharge port
Being connected by smelting slag chute with smelting slag import, described low nickel matte discharge port is with low nickel matte import by low nickel matte chute even
Connect.
Device the most according to claim 1, it is characterised in that described smelting furnace furnace roof is provided with gas melting furnace flue outlet,
Gas melting furnace flue outlet is connected with smelting furnace waste heat boiler by smelting furnace thermal insulation flue；Described converting furnace top is provided with blowing
Kiln gas exports, and converting furnace exhanst gas outlet is connected with converting furnace waste heat boiler by converting furnace thermal insulation flue；Described slag cleaning furnace
It is provided with slag cleaning furnace exhanst gas outlet.
Device the most according to claim 1, it is characterised in that described smelting furnace is vertical pair of side-blown smelting furnace, described in blow
Furnace is that vertical bilateral blows converting furnace.
Device the most according to claim 1, it is characterised in that described converting furnace is provided with compressed air inlet, this compression
Air intlet is positioned at below low nickel matte import；Described converting furnace is provided with air port, and this air port is positioned at converting furnace stove both walls copper water
The lowest part of set, and the air-supply passage in this air port is downward-sloping.
5. the method that the device using claim 1 carries out melting continuously to nickel-containing material, it is characterised in that the method
Step includes:
(1) nickel-containing material, smelting fusing agent, fuel are added in smelting furnace by charge door, carry out melting reaction, generate low nickel
Sulfonium, smelting slag and flue dust, low nickel matte and smelting slag complete to separate in smelting furnace；
(2) the low nickel matte in step (1) flows automatically in entrance converting furnace by low nickel matte discharge port and low nickel matte chute, meanwhile, to
Flux import adds blowing flux, carries out blowing reaction, generate high nickel matte, blowing slag and flue gas, high nickel matte and blowing slag and exist
Complete in the settling zone of converting furnace to separate；
(3) smelting slag in step (1) carries out lean in entering slag cleaning furnace by smelting slag discharge port and the gravity flow of smelting slag chute
Changing, produce slag and flue gas after low nickel matte, dilution after dilution, wherein, the low nickel matte produced after dilution low nickel matte after dilution is released
Mouthful flow out, condensed broken after, join in converting furnace flux import with the form of the low nickel matte of solid-state, blow；After dilution
After the dilution produced, slag carries out shrend after being released by slag cleaning furnace slag discharge port；
(4) the high nickel matte in step (2) is flowed out by high nickel matte discharge port, carries out slow cooling, ore dressing, or direct-water-quenching；
(5) the blowing slag in step (2) carries out melting by smelting furnace blowing slag return port Returning smelting stove, or by dilution electricity
Stove blowing slag return port returns slag cleaning furnace and carries out dilution, or open circuit reclaims valuable metal.
The method that nickel-containing material is carried out melting continuously the most according to claim 5, it is characterised in that described nickel-containing material
Including nickel sulfide concentrate, ambrose alloy concentrate, nickel ore, high-grade primary ambrose alloy lump ore, also include returning flue dust, blowing slag.
The method that nickel-containing material is carried out melting continuously the most according to claim 5, it is characterised in that in step (4), when
When in high nickel matte, Fe mass content is 2%～4%, the high nickel matte of output carries out slow cooling, ore dressing；When Fe mass content in high nickel matte
When being less than 1%, the high nickel matte direct-water-quenching of output.
The method that nickel-containing material is carried out melting continuously the most according to claim 5, it is characterised in that in step (5), when
When in blowing slag, the mass content of cobalt is less than 0.3%, blowing slag is melted by smelting furnace blowing slag return port Returning smelting stove
Refining, or carry out dilution by slag cleaning furnace blowing slag return port return slag cleaning furnace；When in blowing slag, the mass content of cobalt is
When more than 0.3%, the electric furnace smelting equipment that blowing slag is opened a way other smelts cobalt sulfonium, reclaims valuable metal.
The method that nickel-containing material is carried out melting continuously the most according to claim 5, it is characterised in that in step (1), molten
Refining temperature is 1250 DEG C～1450 DEG C；The mass percent of the essential element of the low nickel matte of output: Ni Yu Cu sum be 20%～
45%, Fe be 20%～50%, S be 22%～27%；The smelting slag of output is SiO2-FeO-MgO-CaO-Al2O3Multicomponent mixture slag
System.
The method that nickel-containing material is carried out melting continuously the most according to claim 5, it is characterised in that in step (2),
Blowing temperature is 1200 DEG C～1300 DEG C；The mass percent of the essential element of the high nickel matte of output: Ni and Cu be 70%～
75%, Fe are 0.6%～4%, and S is 20%～22%；The blowing slag of output is mainly composed of 2FeO SiO2, containing Ni and Cu in slag
Mass percent be 1.5%～3.5% altogether.
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| CN108193057A (en) * | 2018-02-08 | 2018-06-22 | 宜兴曜源科技发展有限公司 | A kind of copper converting slag is hot to add in copper smelter system and its operating method |
| CN108728659A (en) * | 2018-06-20 | 2018-11-02 | 中国恩菲工程技术有限公司 | Nickel slag dilution method |
| CN109825721A (en) * | 2019-03-20 | 2019-05-31 | 金川集团股份有限公司 | A kind of high nickel matte slow cooling mold and the method for casting, the high nickel matte of slow cooling |
| CN110205501A (en) * | 2019-07-08 | 2019-09-06 | 中国恩菲工程技术有限公司 | Reduction nickel-containing material prepares the device of nickel matte |
| CN110656254A (en) * | 2019-10-12 | 2020-01-07 | 中国恩菲工程技术有限公司 | Device and method for top-blown nickel smelting |
| CN111101001A (en) * | 2020-01-16 | 2020-05-05 | 中国恩菲工程技术有限公司 | One-step nickel smelting system and one-step nickel smelting method |
| CN113502402A (en) * | 2021-06-08 | 2021-10-15 | 金川集团股份有限公司 | Direct nickel smelting method by top-side composite smelting |
| CN113957265A (en) * | 2021-10-27 | 2022-01-21 | 金川镍钴研究设计院有限责任公司 | Process and system for producing high-nickel matte by continuously converting laterite smelting low-nickel matte |
| CN115386736A (en) * | 2022-08-04 | 2022-11-25 | 广东邦普循环科技有限公司 | Method for treating laterite-nickel ore by oxygen-enriched side-blown converter |
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| CN110205501A (en) * | 2019-07-08 | 2019-09-06 | 中国恩菲工程技术有限公司 | Reduction nickel-containing material prepares the device of nickel matte |
| CN110656254A (en) * | 2019-10-12 | 2020-01-07 | 中国恩菲工程技术有限公司 | Device and method for top-blown nickel smelting |
| CN111101001A (en) * | 2020-01-16 | 2020-05-05 | 中国恩菲工程技术有限公司 | One-step nickel smelting system and one-step nickel smelting method |
| CN111101001B (en) * | 2020-01-16 | 2023-06-16 | 中国恩菲工程技术有限公司 | One-step nickel smelting system and one-step nickel smelting method |
| CN113502402A (en) * | 2021-06-08 | 2021-10-15 | 金川集团股份有限公司 | Direct nickel smelting method by top-side composite smelting |
| CN113957265A (en) * | 2021-10-27 | 2022-01-21 | 金川镍钴研究设计院有限责任公司 | Process and system for producing high-nickel matte by continuously converting laterite smelting low-nickel matte |
| CN115386736A (en) * | 2022-08-04 | 2022-11-25 | 广东邦普循环科技有限公司 | Method for treating laterite-nickel ore by oxygen-enriched side-blown converter |
| CN115386736B (en) * | 2022-08-04 | 2024-03-12 | 广东邦普循环科技有限公司 | Method for treating laterite-nickel ore by oxygen-enriched side-blown furnace |
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