CN106480325A - Process system and its application in processing copper ashes of copper ashes - Google Patents
Process system and its application in processing copper ashes of copper ashes Download PDFInfo
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- CN106480325A CN106480325A CN201610967278.5A CN201610967278A CN106480325A CN 106480325 A CN106480325 A CN 106480325A CN 201610967278 A CN201610967278 A CN 201610967278A CN 106480325 A CN106480325 A CN 106480325A
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- guipure
- rotary hearth
- furnace
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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
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/0054—Slag, slime, speiss, or dross treating
-
- 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
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/0028—Smelting or converting
- C22B15/003—Bath smelting or converting
- C22B15/0034—Bath smelting or converting in rotary furnaces, e.g. kaldo-type furnaces
-
- 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
-
- 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
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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 kind of system processing copper ashes and its application in processing copper ashes, described system includes：Spray pretreatment unit, raw material shaped device, rotary hearth furnace are reduced directly system, melt segregation apparatuss and prepare mineral wool device；Wherein, the discharging opening of spray pretreatment unit is communicated with the feeding mouth of raw material shaped device, the feeding mouth that the discharging opening of raw material shaped device is reduced directly system with rotary hearth furnace communicates, the discharging opening that rotary hearth furnace is reduced directly system is communicated with the feeding mouth of fusing segregation apparatuss, and the discharging opening of fusing segregation apparatuss is communicated with the feeding mouth preparing mineral wool device.System using the present invention processes copper ashes, aqueous copper ashes green-ball can be directly entered rotary hearth furnace, realizes the recovery of the drying, preheating and lead zinc-copper of green-ball in stove, then through rotary hearth furnace direct-reduction, molten point of stove fusing separates and prepares the operations such as mineral wool, realizes the comprehensive utilization of copper ashes resource.
Description
Technical field
The present invention relates to processing the system of copper ashes, processing the application in copper ashes further to this system, belonging to copper ashes
Process field.
Background technology
More than rotary hearth furnace direct-reduction technique, direct-reduction flow process is dried using material forming (pressure ball or pelletizing), become
Pelletizing after type just can be distributed into rotary hearth furnace after needing drying, therefore must be separately provided drying plant and be dried；Additionally, through turning bottom
The reduzate of stove direct-reduction, also needs could discharge outside rotary hearth furnace after supercooling, and by being arranged on rotary hearth furnace cooling section
On water-cooling wall cooled down, this also result in the waste of reduzate heat.
Copper ashes is the waste residue of generation during copper metallurgy, is mainly derived from pyrometallurgical smelting process, such as reverberatory smelting, Flash Smelting Furnace
Melting, Noranda process, Chinese mugwort Safa, electric furnace etc..Copper smelting by pyrometallurgy often produces 1t copper according to statistics, averagely will produce 2～3t copper ashes, and 2013
In year Chinese copper ashes yield about 15,000,000 t, China's copper ashes volume of cargo in storage adds up more than 50,000,000 t.Wherein a considerable amount of copper,
The valuable metals such as lead, zinc, ferrum, store up for a long time, not only land occupation, and pollute environment, more cause the huge waste of resource.If
Energy all recyclings, will produce huge economic benefit.
The Chinese invention patent of Publication No. CN1235268A discloses one kind and is used for rotary table, especially rotary hearth furnace
Charging and distribution device.This device includes material feed mechanism (2,3), and material transfer mechanism (304) and material gravity are toppled over
Guide groove (4), this equipment includes the staticizer of the distribution material for difference, and described mechanism includes toppling over the cloth of guide groove (4)
Leading edge (214), it has the profile of substantially curve, and the derivative of this curve is rotary table (10) in table core
The incremental linear function of the radius of the part and its edge between.This equipment cannot process the pelletizing do not dried, and needs in pelletizing
Stage adds stoving process, increased process energy consumption；The heat entrained by flue gas cannot directly be utilized simultaneously, increase heat loss.
The Chinese invention patent of Application No. 201510648755.7 disclose a kind of for the cooling in rotary hearth furnace and baking
Dry synchronous method, comprises the following steps that：First, red for rotary hearth furnace ball is equably fallen feed end A2's by the first deflector chute
On this lower floor's carrier bar, this rotary hearth furnace green-ball is equably fallen in this upper strata carrier bar of feed end B1 by the first distributing device simultaneously
On；Secondly, by adjusting the rotating speed of this upper strata carrier bar and this lower floor's carrier bar it is ensured that the rotation direction of the two is contrary；Subsequently, cold sky
Gas rises and is placed through the red ball on this lower floor's carrier bar, and this red ball is lowered the temperature, and air temperature increase transitions become simultaneously
Preheated air；Then, this preheated air continues to rise, and is then passed through the green-ball on this upper strata carrier bar, this green-ball is dried, in advance
Heat, the decline of this preheated air temperature, is transformed into the hot-air containing certain heat simultaneously；Finally, this hot-air is drawn out of, and enters
Falling dust room, then this dirt pocket is entered by this falling dust room, proceeded to by this dirt pocket in the air preheating system in rotary hearth furnace and use；
In the method, the red ball of rotary hearth furnace reduction product must be discharged and just can be carried out cooling treatment outside rotary hearth furnace, not only need to be separately provided cold
But device, also can cause thermal losses；Additionally, adopting air to cool down rotary hearth furnace reduction product, easily cause rotary hearth furnace product
Oxidation, can reduce the degree of metalization of product, affect product quality.
The Chinese invention patent of Application No. 201510649237.7 discloses a kind of same for cooling, drying in rotary hearth furnace
The high-performance device of step, it includes：Bearing block, clutch shaft bearing, second bearing, upper network chain/carrier bar, lower network chain/carrier bar, air exhauster,
Casing, upper dividing wall, middle dividing wall, lower dividing wall, maintenance door, bellows, striker plate, bracing frame, reductor and motor；Should
The two ends of upper link plate are respectively mounted and connect this clutch shaft bearing, and this lower carrier bar is respectively mounted and connects this second bearing, and should
Clutch shaft bearing is fixedly arranged on this bearing block with this second bearing is in overlying relation；This casing is placed on this bracing frame,
This maintenance door is opened up on this casing, and this maintenance door is placed on this bracing frame, this bellows is located on this casing, this convulsion seat in the plane
Above this bellows；In this casing internal, on this, dividing wall is located on this upper link plate；In this dividing wall be located at this on network chain/
Between carrier bar and this lower carrier bar；This lower dividing wall is located at the lower section of this lower carrier bar；In the method, rotary hearth furnace reduction product must be discharged
Just cooling treatment can be carried out outside rotary hearth furnace, not only need to be separately provided chiller, also can cause thermal losses；Additionally, it is right
Rotary hearth furnace reduction product adopts air to cool down, and easily causes the oxidation of rotary hearth furnace product, can reduce the degree of metalization of product, impact
Product quality.
To sum up, in current rotary hearth furnace process, the drying of green-ball and the cooling of reduzate are respectively adopted different equipment
Processed with technique, taken up an area face greatly, technological process is long, and efficiency of utilization is low, this not only construction cost increase, also can cause energy
The problems such as consumption index is higher, production cost is higher is it would be highly desirable to improve.
Content of the invention
An object of the present invention is to provide a kind of system processing copper ashes, and the system using the present invention processes copper ashes, contains
The copper ashes green pellets of water can be realized drying in rotary hearth furnace, preheat, and can directly enter stove using aqueous copper ashes green-ball, save
The investment of drying plant, reducing energy consumption simultaneously, enable the comprehensive utilization of copper ashes resource simultaneously.
The second object of the present invention is to be applied to process copper ashes by described system.
The above-mentioned purpose of the present invention is achieved through the following technical solutions：
A kind of system processing copper ashes, including：Spray pretreatment unit, raw material shaped device, rotary hearth furnace direct-reduction system
Unite, melt segregation apparatuss and prepare mineral wool device；Wherein, the pan feeding of the discharging opening of spray pretreatment unit and raw material shaped device
Mouth communicates, and the feeding mouth that the discharging opening of raw material shaped device is reduced directly system with rotary hearth furnace communicates, rotary hearth furnace direct-reduction system
The discharging opening of system is communicated with the feeding mouth of fusing segregation apparatuss, melts the discharging opening of segregation apparatuss and the pan feeding preparing mineral wool device
Mouth communicates；
Described rotary hearth furnace direct-reduction system include distribution device dry, preheating and lead zinc recovering, rotary hearth furnace preheating and
Direct-reduction, rotary hearth furnace cooling and reduction, rotary hearth furnace discharging, its structure includes annular body of heater and rotatable ring-shaped furnace bottom, should
Annular body of heater is made up of inner circumferential furnace wall, periphery furnace wall and annular furnace roof, and inner circumferential furnace wall is coaxially disposed with periphery furnace wall, annular furnace roof
Outer edge be connected to inner circumferential furnace wall and the top of periphery furnace wall, form annular furnace, described ring-shaped furnace bottom corresponds to
It is located at the lower section of this annular furnace；Circumferentially it is disposed with cloth area, preheating zone, middle warm area, high temperature in this annular furnace
Area and cooling zone, and cooling zone and cloth area adjacent, with radial direction between cloth area and preheating zone, between high-temperature region and cooling zone
Barricade separates, and leaving between the lower end of this barricade and ring-shaped furnace bottom can be at least through the interval of one layer of material；In this preheating
Equipped with burner on the internal and external circumferential furnace wall in area, middle warm area and high-temperature region, the furnace bottom between cooling zone and cloth area is provided with discharging
Device, wherein, described cloth area and cooling zone is adjacent is located between two barricades, laterally set on this cloth area and cooling zone
Put by the multilamellar sector fan-shaped guipure distributing device that forms of net conveyor, fan-shaped guipure distributing device transverse section two ends between barricade,
The side that top above this fan-shaped guipure distributing device corresponds to cooling zone is provided with feeder channel；In basecoat sector guipure
Internal and external circumferential furnace wall between fan-shaped guipure is provided with gas blowing device and layer second from the bottom between；In fan-shaped net conveyor
Centre circumferentially uniform intervals arrangement radial canal；It is being provided with retracting device corresponding to the top above this fan-shaped guipure distributing device.
Preferably, be arranged on the fan-shaped guipure distributing device on cloth area and cooling zone, its overhead height protrude from or
Parallel to rotary hearth furnace burner hearth overhead height.The height at the top of fan-shaped guipure distributing device, typically with parallel rotary hearth furnace roof of the furnace
Highly it is preferred, so can make full use of space, but can be according to the reality of distributing device internal structure parameter and the number of plies of guipure
Needs are adjusted, and are allowed to protrude and furnace roof height.
Preferably, the height being arranged on the gas blowing device of internal and external circumferential furnace wall is higher than on basecoat sector guipure
Material bed height.Gas blowing device suitable height can make blowing gas directly be fully contacted with the material on fan-shaped guipure,
Reaction is promoted to occur, the high temperature reduction product simultaneously avoiding enter into cooling zone is reoxidized.
Described fan-shaped guipure distributing device is made up of the spaced up and down sector net conveyor of multilamellar, adjacent sector
Net conveyor alternates the segment distance that staggers as last layer sector net conveyor end to next layer of sector in circumferencial direction
The blanking channel of net conveyor head end blanking, sets in the head end of the fan-shaped net conveyor of this blanking channel each next layer corresponding
There is striker plate；The fan-shaped net conveyor of the superiors is located at the lower section of feeder channel, undermost sector net conveyor end and phase
The blanking channel that adjacent partition wall is formed is located at the top in cloth area.
Preferably, the material of described fan-shaped net conveyor is resistant to elevated temperatures alloy or metal material；
Preferably, described fan-shaped guipure distributing device is made up of the spaced up and down sector net conveyor of 3-9 layer, more
It is preferably and be made up of the spaced up and down sector net conveyor of 3-5 layer；
Preferably, the distance between every two-layer sector net conveyor center is 200mm-800mm；If two guipures are apart from little
In 200mm, not only impact runs, also because setting quantity excessively increases cost；If, more than 800mm, pelletizing is from a guipure for distance
The difference in height reaching lower floor's guipure is excessive, easily causes the fragmentation of pelletizing, the time of staying is too short on guipure simultaneously, and effect is dried in impact
Really.
Preferably, a width of 100-200mm of size of the blanking channel of undermost sector net conveyor；Blanking channel width
Pelletizing can be made can to drop down onto lower floor's guipure for 100-200mm.If undersized, material falling speed is excessively slow, affects cloth effect；If
Oversized, material falls to concentrating, and pelletizing can be led to pile up.
Preferably, described drawing mechanism is spiral discharging device.
Preferably, barricade and the spacing distance of rotary furnace bottom are 60-150mm.The barricade distance at distribution device two ends turns
Bottom stove furnace bottom height is 60-150mm, for opening cooling zone, cloth area and other zone isolation it is ensured that blowing gas will not shadow
Ring the gas after other zone atmosphere, and heat exchange can up dry and preheating green-ball；Additionally, also not interfering with the material in each region
Mobile.If barricade apart from furnace bottom highly excessive it is impossible to ensure isolation effect, if highly too small, fortune in stove for the material can be affected
Dynamic.
Fan-shaped net conveyor described in each layer includes support shaft, drive sprocket and fan-shaped guipure；Two support shafts are respectively
Radial rotating is supported on the two ends of fan-shaped net conveyor, this support shaft each at its two ends respectively equipped with a driving-chain
Wheel, this fan-shaped guipure is connected as closed annular band by several fan-shaped monomer carrier bars, passes through chain between adjacent monomer carrier bar
Section is hinged, is provided with, at the two ends of this chain link, the hole engaged with described drive sprocket, the chain link on the both sides of this fan-shaped guipure around
Fan-shaped net conveyor is formed on two drive sprockets；Fan-shaped guipure above each layer sector net conveyor in the running, passively
Power apparatus drive and are moved by head end terminad.
Preferably, described sector net conveyor is in be horizontally disposed with.
Preferably, described sector guipure distributing device along the distance away from sidewall of the furnace body for the two ends of the radial direction of rotary hearth furnace is respectively
100-200mm；This distance can ensure that net belt type distributing device energy up-down vibration, but will not collide the side wall of rotary hearth furnace, and also may be used
Pelletizing is covered with rotary furnace bottom.
Preferably, described feeder channel is identical with the width of fan-shaped guipure along the width of annular body of heater radial direction.
Preferably, undermost sector net conveyor is 200-800mm apart from the height of ring-shaped furnace bottom, and exceeds discharging dress
The height put.If this is apart from excessive, pelletizing can be more easy to fragmentation during falling；If apart from too small, bottom is heated excessively, impact
The life-span of device.
Described monomer carrier bar is radially divided into several sections, and the arc of dividing plate by the dividing plate of multiple tracks arc in annular body of heater
It is isocentric circular arc with annular body of heater, the height of dividing plate is higher than the material bed thickness on fan-shaped guipure of material.
Preferably, the height of dividing plate is 60-80mm；And at least high than material bed thickness on fan-shaped guipure about 20mm, thus
The feed pelletizing that last layer guipure can be made fully enters next layer of guipure, and until whole clothes are to rotary furnace bottom.
Preferably, the width of described monomer carrier bar inner rim is not more than 20mm, and the width of neighboring is not more than 40mm.
Described fan-shaped guipure by wire netting or is uniformly distributed the genus plate of pore and makes；The preferably circular gas of described pore
Hole；Described air vent aperture is preferably 2-7mm.The aperture of pore is 2-7mm, and hole diameter is too small, the contact with green pellets for the gas
Face is little, affects its drying effect, and hole diameter is excessive, and part green pellets through leaking under pore or may be stuck in pore.
In the centre of fan-shaped net conveyor circumferentially uniform intervals arrangement radial canal, radial canal axially along annular body of heater
Radial direction is arranged；Preferably, the centre distance of the radial canal in same layer sector net conveyor is 500-900mm.
Preferably, described retracting device is the device reclaiming volatile metal chlorides or discharge flue gas.
Invention further provides the method that the described system of application processes copper ashes, including：
(1) in copper ashes, spray additive solution carries out pretreatment to copper ashes in spray pretreatment unit；
(2), after pretreated copper ashes being mixed homogeneously with reducing agent and binding agent, make in raw material formation system and contain
The green pellets of water；
(3) aqueous green pellets by rotary hearth furnace be reduced directly system feeder channel equably cloth on fan-shaped guipure simultaneously
Operate forward with guipure；Wherein, radial canal carries out heat radiation to aqueous green-ball, dries and preheats green pellets；Gas injection fills
Put the oxidizing gas of injection, promote lead in pelletizing, zinc, the compound of copper to react the corresponding metal chlorination of generation at high temperature
Thing；Generate metal chloride vaporization at high temperature reclaim by retracting device, meanwhile, in copper ashes sulfur also oxidized remove after pass through back
Receiving apparatus discharge out of the furnace；The pelletizing of preheating reaches rotary hearth furnace cloth area, warp successively by the blanking channel of orlop sector guipure
Cross rotary hearth furnace preheating zone, middle warm area, high-temperature region generation reduction reaction, obtain the reduzate of high temperature；The reduzate of high temperature enters
Enter cooling zone, the reduzate after cooling is discharged out of the furnace by drawing mechanism；
(4) reduzate discharging out of the furnace is sent into fusing segregation apparatuss and carry out molten point, obtain the relatively low ferrum of cupric sulfur-bearing
Water and liquid slag；
(5) liquid slag feeding prepares mineral wool device, obtains mineral wool product；
Additive solution described in step (1) is the work of calcium chloride solution, sodium chloride solution or sodium chloride-containing, calcium chloride
Any one of industry waste liquid or multiple；
Reducing agent described in step (2) is in semi-coke, anthracite, brown coal, bituminous coal, half glue, petroleum coke, coking coal or graphite etc.
Any one or more mixture forming according to any ratio；Described binding agent be bentonite, clay, waterglass, red mud,
The combination of one or more of Colophonium, sodium carboxymethyl cellulose, starch, modified starch, sodium humate, dextrin.
Moisture≤15% in aqueous green pellets described in step (2).
In step (3), the oxidizing gas of gas blowing device injection are one of air, oxygen or rotary hearth furnace flue gas
Or it is multiple；The radiation temperature of radial canal is 550-1100 DEG C, and lower floor's radial canal temperature is higher than upper strata radial canal temperature.
Reduzate temperature in step (4) is 800-1100 DEG C.
System using the present invention processes copper ashes, and aqueous copper ashes green-ball can be directly entered rotary hearth furnace, realizes in stove
The drying of green-ball, preheating, then through rotary hearth furnace direct-reduction, molten point of stove fusing separates and prepares the operations such as mineral wool, realizes copper ashes money
The comprehensive utilization in source.The temperature of the reduzate after cooling is 800-1100 DEG C, is occurred bright by the pelletizing surface of this reduzate
Aobvious hardening, is conducive to the transport of reduzate, and provide a good material condition for molten point of process, at this temperature simultaneously
Reduzate carries out molten timesharing, and fusing separation process and energy consumption are not significantly affected.
Brief description
The rotary hearth furnace of Fig. 1 one embodiment of the invention processes the schematic flow sheet of the system and method for copper ashes.
The schematic flow sheet of the rotary hearth furnace Direct Reduction of Fig. 2 one embodiment of the invention.
The rotary hearth furnace overlooking the structure diagram of Fig. 3 one embodiment of the invention.
The fan-shaped mesh belt structure top view of Fig. 4 present invention.
Fig. 5 present invention sector guipure sectional view.
Fig. 6 present invention sector guipure distributing device is in rotary hearth furnace circumferencial direction structural representation.
Description of reference numerals：
1st, cloth area；2nd, preheating zone；3rd, middle warm area；4th, high-temperature region；5th, cooling zone；6th, fan-shaped net conveyor；61st, fan-shaped net
Band；7th, dividing plate；8th, pore；9th, blanking channel；10th, support shaft；11st, drawing mechanism；12nd, feeder channel；13rd, striker plate；14th, pass
Movable sprocket；15th, chain link；16th, barricade；17th, retracting device；18th, gas blowing device；19th, radial canal.
Specific embodiment
With reference to Fig. 1-Fig. 2, a kind of system processing copper ashes provided by the present invention, including：Spray pretreatment unit S100,
Raw material shaped device S200, rotary hearth furnace are reduced directly system S300, fusing segregation apparatuss S400 and prepare mineral wool device S500；Its
In, the discharging opening of spray pretreatment unit S100 is communicated with the feeding mouth of raw material shaped device S200, raw material shaped device S200
Discharging opening and rotary hearth furnace be reduced directly the feeding mouth of system S300 and communicate, rotary hearth furnace be reduced directly the discharging opening of system S300 with
The feeding mouth of fusing segregation apparatuss S400 communicates, and melts the discharging opening of segregation apparatuss S400 and the pan feeding preparing mineral wool device S500
Mouth communicates；
Described rotary hearth furnace direct-reduction system S300 include distribution device dry and preheating (S301), rotary hearth furnace preheating and
Direct-reduction (S302), rotary hearth furnace cooling (S303), rotary hearth furnace discharging (S304), its structure includes annular body of heater and rotatable
Ring-shaped furnace bottom, this annular body of heater is made up of inner circumferential furnace wall, periphery furnace wall and annular furnace roof, and inner circumferential furnace wall is coaxially set with periphery furnace wall
Put, the outer edge of annular furnace roof is connected to inner circumferential furnace wall and the top of periphery furnace wall, form annular furnace, described ring
Shape furnace bottom is correspondingly arranged at the lower section of this annular furnace；Circumferentially be disposed with this annular furnace cloth area 1, preheating zone 2,
Middle warm area 3, high-temperature region 4 and cooling zone 5, and cooling zone 5 and cloth area 1 adjacent, between cloth area 1 and preheating zone 2, high-temperature region 4
Separated with the barricade 16 of radial direction and cooling zone 5 between, leaving between the lower end of this barricade 16 and ring-shaped furnace bottom can be at least logical
Cross the interval of one layer of material；Equipped with burner on the internal and external circumferential furnace wall of this preheating zone 2, middle warm area 3 and high-temperature region 4, in cooling zone
Furnace bottom between 5 and cloth area 1 is provided with drawing mechanism 11, wherein, described cloth area 1 and cooling zone 5 is adjacent is located at two gears
Between wall 16a, 16b, the fan-shaped net that horizontally set is made up of multilamellar sector net conveyor 6 on this cloth area 1 and cooling zone 5
Band distributing device, top between barricade 16a, 16b, above this fan-shaped guipure distributing device for the fan-shaped guipure distributing device transverse section two ends
The side that portion corresponds to cooling zone 5 is provided with feeder channel 12；Basecoat sector guipure and layer second from the bottom sector guipure it
Between internal and external circumferential furnace wall be provided with gas blowing device 18, its highly be higher than material basecoat sector guipure on material bed
Height；Gas blowing device 18 suitable height, can make blowing gas directly fully connect with the material on fan-shaped net conveyor 6
Touch, promote reaction to occur, the high temperature reduction product simultaneously avoiding enter into cooling zone is reoxidized；In fan-shaped net conveyor 6
Centre circumferentially uniform intervals arrangement radial canal 19；It is being provided with retracting device corresponding to the top above this fan-shaped guipure distributing device
17；
Preferably, it is arranged on the fan-shaped guipure distributing device on cloth area 1 and cooling zone 5, its overhead height protrudes from
Or parallel to rotary hearth furnace burner hearth overhead height.The height at the top of fan-shaped guipure distributing device, typically with parallel rotary hearth furnace burner hearth top
Portion is highly preferred, so can make full use of space, but the number of plies also dependent on distributing device internal structure parameter and guipure
It is actually needed and is adjusted, be allowed to protrude and furnace roof height.
As a kind of specific embodiment, described fan-shaped guipure distributing device is by the spaced up and down sector of multilamellar
Net conveyor 6 forms, and it is fan-shaped as last layer that adjacent fan-shaped net conveyor 6 alternates, in circumferencial direction, the segment distance that staggers
Net conveyor 6 end is to the blanking channel 9 of next layer of fan-shaped net conveyor 6 head end blanking, corresponding in this blanking channel 9 each
The head end of following fan-shaped net conveyor 6 is provided with striker plate 13；The fan-shaped net conveyor of the superiors is located under feeder channel 12
Side, the blanking channel 9 that undermost sector net conveyor 6 end is formed with adjacent partition wall is located at the top in cloth area 1；
Preferably, the material of described fan-shaped net conveyor 6 is resistant to elevated temperatures alloy or metal material；
Preferably, described fan-shaped guipure distributing device is made up of the spaced up and down sector net conveyor 6 of 3-9 layer,
More preferably it is made up of the spaced up and down sector net conveyor 6 of 3-5 layer；
Preferably, the distance between every two-layer sector net conveyor 6 center is 200mm-800mm；If two guipure distances
Less than 200mm, then not only impact runs, and also because needing to arrange quantity excessively, leads to increase cost；If distance is more than 800mm, ball
The difference in height that group reaches lower floor's guipure from a guipure is excessive, easily causes the fragmentation of pelletizing, simultaneously time of staying mistake on guipure
Short, affect drying effect.
Preferably, a width of 100-200mm of size of the blanking channel of undermost sector net conveyor；Blanking channel width
Pelletizing can be made can to drop down onto lower floor's guipure for 100mm-200mm.If undersized, material falling speed is excessively slow, affects cloth effect；
If oversized, material falls to concentrating, and pelletizing can be led to pile up.
Preferably, described drawing mechanism 11 is spiral discharging device；
Preferably, barricade 16a, 16b are 60-150mm with the spacing distance of rotary furnace bottom.The barricade at distribution device two ends
It is 60-150mm apart from rotary furnace bottom height, for by cooling zone, cloth area and other zone isolation open it is ensured that blowing gas
Do not interfere with other zone atmosphere；Additionally, the material also not interfering with each region moves.If barricade is highly excessive apart from furnace bottom,
It cannot be guaranteed that isolation effect, if highly too small, motion in stove for the material can be affected.
Fan-shaped net conveyor 6 described in each layer includes support shaft 10, drive sprocket 14 and fan-shaped guipure 61；Two supports
Radial rotating is supported on the two ends of fan-shaped net conveyor 6 to axle 10 respectively, this support shaft 10 each at its two ends respectively equipped with
One drive sprocket 14, this fan-shaped guipure 61 is connected as closed annular band by several fan-shaped monomer carrier bars, adjacent monomer
Pass through chain link 15 between carrier bar hinged, be provided with, at the two ends of this chain link 15, the hole engaged with described drive sprocket 14, this sector
The chain link 15 on the both sides of guipure 61 is centered around on two drive sprockets 14 and forms fan-shaped net conveyor 6；Each layer sector net conveyor 6
Fan-shaped guipure 61 above in the running, is driven by power set and is moved by head end terminad；
Preferably, described sector net conveyor 6 is in be horizontally disposed with；
Preferably, described sector guipure distributing device along the distance away from sidewall of the furnace body for the two ends of the radial direction of rotary hearth furnace is respectively
100-200mm；This distance can ensure that net belt type distributing device energy up-down vibration, but will not collide the side wall of rotary hearth furnace, and also may be used
Pelletizing is covered with rotary furnace bottom；
Preferably, described feeder channel 12 is identical with the width of fan-shaped guipure 61 along the width of annular body of heater radial direction；
Preferably, the fan-shaped net conveyor 6 of bottom is 200-800mm apart from the height of ring-shaped furnace bottom, and exceeds discharging dress
The height put.If this is apart from excessive, pelletizing can be more easy to fragmentation during falling；If apart from too small, bottom is heated excessively, impact
The life-span of device.
As a kind of specific embodiment, described monomer carrier bar is in annular body of heater radially by the dividing plate of multiple tracks arc
7 are divided into several sections, and the arc of dividing plate 7 is isocentric circular arc with annular body of heater, and the height of dividing plate 7 is higher than material in fan-shaped guipure 61
Upper material bed thickness；Preferably, the height of dividing plate 7 is 60-80mm, and at least high than feed pelletizing thickness about 20mm, thus
The feed pelletizing that epimere guipure can be made all feeds hypomere guipure, and until whole clothes are to rotary furnace bottom.
Preferably, the width of described monomer carrier bar inner rim is not more than 20mm, and the width of neighboring is not more than 40mm；
Described fan-shaped guipure 6 by wire netting or is uniformly distributed the metallic plate of pore 8 and makes；Described pore 8 is preferably to be justified
Shape pore, it is furthermore preferred that a diameter of 2-7mm of described circle pore.If hole diameter is too small, the contact with green pellets for the gas
Face is little, affects its drying effect, if hole diameter is excessive, part green pellets through leaking under pore or may be stuck in pore
Interior.
As a kind of specific embodiment, in the centre of fan-shaped net conveyor 6 circumferentially uniform intervals arrangement radial canal
19, the radial direction setting axially along annular body of heater of radial canal 19；Preferably, the radiation in same layer sector net conveyor 6
The centre distance of pipe 19 is 500-900mm.
Preferably, described retracting device 17 is the device reclaiming volatile metal chlorides or discharge flue gas.
A kind of described system of application processes the concrete mode of copper ashes, including：
(1) in copper ashes, copper ashes is carried out pretreatment in pretreatment unit S100 by spray additive solution；
(2) make in pressure ball molding system S200 after pretreated copper ashes being mixed homogeneously with reducing agent and binding agent
Aqueous green pellets；
(3) aqueous green pellets by rotary hearth furnace be reduced directly system S300 feeder channel 12 equably cloth in fan-shaped net
Operate forward on band 61 and with guipure；Wherein, radial canal 19 carries out heat radiation to aqueous green-ball, dries and preheats green pellets；
The oxidizing gas of gas blowing device 18 injection, promote lead in pelletizing, zinc, the compound of copper to react generation at high temperature accordingly
Metal chloride；The metal chloride vaporization at high temperature generating is reclaimed by retracting device 17, and meanwhile, in copper ashes, sulfur is also oxidized
Discharged out of the furnace by retracting device 17 after removing；The pelletizing of preheating is reached by the blanking channel 9 of orlop sector guipure and turns bottom
Stove cloth area, sequentially passes through rotary hearth furnace preheating zone 2, middle warm area 3, high-temperature region 4 generation reduction reaction, obtains the also original of high temperature
Thing；The reduzate of high temperature enters cooling zone 5, and the reduzate after cooling is discharged out of the furnace by drawing mechanism 11；
(4) reduzate discharging out of the furnace is sent into molten separating device S400 and carry out molten point, obtain the relatively low ferrum of cupric sulfur-bearing
Water and liquid slag；
(5) liquid slag feeding prepares mineral wool device S500, obtains mineral wool product.
Additive solution described in step (1) is any in calcium chloride solution, sodium chloride solution or industrial wastes
Plant or multiple；Reducing agent described in step (2) is semi-coke, anthracite, brown coal, bituminous coal, half glue, petroleum coke, coking coal or graphite etc.
In any one or more mixture forming according to any ratio；Described binding agent is bentonite, clay, waterglass, red
The combination of one or more of mud, Colophonium, sodium carboxymethyl cellulose, starch, modified starch, sodium humate, dextrin；Step
(2) moisture≤15% in aqueous green pellets described in；The oxidizing gas of gas blowing device 18 injection in step (3)
For one or more of air, oxygen or rotary hearth furnace flue gas；The radiation temperature of radial canal 19 is 550-1100 DEG C；Step (4)
In reduzate temperature be 800-1100 DEG C.
The solution of the present invention is explained further below in conjunction with the embodiments, it will be understood to those of skill in the art that under
The embodiment in face is merely to illustrate the present invention, and should not be taken as limiting the scope of the invention.
Embodiment 1
Copper ashes raw material contains TFe 40.12%, Cu 0.19%, Pb 0.55%, Zn 2.27%, S 0.18%.First by copper ashes
Raw material spray chloride containing calcium solution carries out pretreatment in spray pretreatment unit S100.Pretreated copper ashes, allocates into certain
Mix after the reducing agent of amount, binding agent, raw material shaped device S200 makes aqueous copper ashes green pellets, pelletizing particle diameter
15mm, water content 10%.Aqueous green-ball is entered by the feeder channel 12 that rotary hearth furnace is reduced directly system S300 distribution device and turns
Bottom stove.This distribution device is fan-shaped guipure distributing device, is horizontally installed on rotary hearth furnace cloth area 1 and cooling zone 5, including to
The fan-shaped net conveyor 6 of 12,5, material passage, the radial canal 19 being distributed in guipure and support shaft 10, and be fixed on by support shaft 10
In rotary hearth furnace.Single sector guipure is link plate structure, the blanking channel that orlop sector net conveyor 6 is formed with adjacent barricade 16
9 are located above rotary hearth furnace cloth area 1, and orlop sector net conveyor 6 is apart from furnace bottom 200mm.
It is 500mm with radial canal 19 centre-to-centre spacing in layer guipure, two-layer guipure centre distance is 200mm.
Fan-shaped guipure is divided into the radian one on 5 endless tracks, and endless track and rotary hearth furnace circumferencial direction by dividing plate 7
Cause, guipure transverse section are parallel with rotary hearth furnace radial direction.The circular pore 8 of diameter 7mm, end are evenly distributed with fan-shaped guipure
Blanking channel 9 width 200mm.Radial canal 19 maximum temperature is 1000 DEG C.
The barricade 16 at distribution device two ends is 60mm apart from rotary furnace bottom height.
Retracting device 17 is arranged on the top above fan-shaped guipure distributing device, and in the side near guipure.
Aqueous green-ball contacts with up preheating gas in guipure running, is subject to radial canal 19 in guipure simultaneously
Heat radiation, green-ball is gradually oven-dried, preheats.Cooling zone 5 is provided with gas blowing device 18, and the oxidizing gas of its injection are oxygen
Gas and rotary hearth furnace flue gas.Oxidizing gas are contacted with green-ball, promote the compound of the lead in pelletizing, zinc, copper to occur at high temperature
Reaction, is generated corresponding metal chloride, is reclaimed by retracting device 17, simultaneously the oxidized removing of sulfur.
Dry the blanking channel 9 entrance rotary hearth furnace cloth area 1 that the pelletizing after preheating passes through fan-shaped guipure, sequentially pass through preheating
Area 2, middle warm area 3, high-temperature region 4, pelletizing is 40min in this stage residence time, and high-temperature region temperature is 1250 DEG C.Pelletizing is in high temperature
Issue raw reduction reaction, obtain high temperature reduction product.Subsequently high temperature reduction product reaches cooling zone 5, after cooling, by turning bottom
Furnace discharge device 11 discharges out of the furnace.
Rotary hearth furnace direct-reduction result reaches 91.17% for copper removal efficiency, and zinc removal efficiency reaches 97.23%, and lead removal efficiency reaches
97.88%.
The hot reduzate of reduzate discharging opening discharge is sent directly into fusing segregation apparatuss S400 and carries out molten point, adds
5% quick lime makees flux, at 1600 DEG C of temperature, is incubated 60min, slag sluicing system, the liquid slag obtaining is sent directly into system
Standby mineral wool device S500 is used for producing mineral wool, obtains the molten iron product of iron content 96.16%, cupric 0.03%, sulfur-bearing 0.06% simultaneously
Product.
Embodiment 2
Copper ashes raw material contains TFe 35.24%, Cu 0.11%, Pb 0.74%, Zn 0.78%, S 0.14%.First by copper ashes
Raw material sprays sodium chloride-containing and the solution of calcium chloride carries out pretreatment in spray pretreatment unit S100.Pretreated copper
Slag, allocates a certain amount of reducing agent into, makes aqueous copper ashes green-ball, pelletizing particle diameter in raw material shaped device S200 after binding agent
12mm, water content 12%, aqueous green-ball is entered by the feeder channel 12 that rotary hearth furnace is reduced directly system S300 distribution device
Rotary hearth furnace.This distribution device is fan-shaped guipure distributing device, is horizontally installed between rotary hearth furnace cloth area 1 and cooling zone 5, including to
The fan-shaped net conveyor 6 of 12,3, material passage, the radial canal 19 being distributed in guipure and support shaft 10, and be fixed on by support shaft 10
In rotary hearth furnace.
Single sector guipure is link plate structure, the blanking channel 9 that orlop sector net conveyor 6 is formed with adjacent barricade 16
Above rotary hearth furnace cloth area 1, orlop sector net conveyor 6 is apart from furnace bottom 300mm.
It is 700mm with radial canal 19 centre-to-centre spacing in layer guipure, two-layer guipure centre distance is 800mm.
Fan-shaped guipure is divided into the radian one on 4 endless tracks, and endless track and rotary hearth furnace circumferencial direction by dividing plate 7
Cause, guipure transverse section are parallel with rotary hearth furnace radial direction.The circular pore 8 of diameter 4mm is evenly distributed with fan-shaped guipure 61, end
End blanking channel 9 width 150mm.Radial canal 19 maximum temperature is 900 DEG C.
The barricade 16 at distribution device two ends is 110mm apart from rotary furnace bottom height.
Retracting device 17 is arranged on the top above fan-shaped guipure distributing device, and in the side near guipure.
Aqueous green-ball contacts with up preheating gas in guipure running, is subject to radial canal 19 in guipure simultaneously
Heat radiation, green-ball is gradually oven-dried, preheats.Cooling zone 5 is provided with gas blowing device 18, and the oxidizing gas of its injection are sky
Gas.Oxidizing gas are contacted with green-ball, promote the compound of the lead in pelletizing, zinc, copper to react at high temperature, generate corresponding
Metal chloride, reclaimed by retracting device 17, simultaneously the oxidized removing of sulfur.
Dry the blanking channel 9 entrance rotary hearth furnace cloth area 1 that the pelletizing after preheating passes through fan-shaped guipure, sequentially pass through preheating
Area 2, middle warm area 3, high-temperature region 4, pelletizing is 40min in this stage residence time, and high-temperature region temperature is 1250 DEG C.Pelletizing is in high temperature
Issue raw reduction reaction, obtain high temperature reduction product.Subsequently high temperature reduction product reaches cooling zone 5, after cooling, by turning bottom
Furnace discharge device discharges out of the furnace.
Rotary hearth furnace direct-reduction result reaches 90.1% for copper removal efficiency, and zinc removal efficiency reaches 98.23%, and lead removal efficiency reaches
98.76%.
The hot reduzate of reduzate discharging opening discharge is sent directly into fusing segregation apparatuss S400 and carries out molten point, adds
10% quick lime makees flux, at 1550 DEG C of temperature, is incubated 90min, slag sluicing system, the liquid slag obtaining is sent directly into system
Standby mineral wool device S500 is used for producing mineral wool, obtains the molten iron product of iron content 97.23%, cupric 0.02%, sulfur-bearing 0.08% simultaneously
The molten iron product of product.
Embodiment 3
Copper ashes raw material contains TFe 38.64%, Cu 0.15%, Pb 0.46%, Zn 2.81%, S 0.20%.First by copper ashes
The industrial wastes liquid that raw material sprays chloride containing calcium carries out pretreatment in spray pretreatment unit S100.Pretreated copper ashes,
Allocate a certain amount of reducing agent into, make aqueous copper ashes green-ball, pelletizing particle diameter in raw material shaped device S200 after binding agent
8mm, water content 15%, aqueous green-ball is distributed into by the feeder channel 12 that rotary hearth furnace is reduced directly system S300 distribution device and turns
Bottom stove.This distribution device is fan-shaped guipure distributing device, is horizontally installed between rotary hearth furnace cloth area 1 and cooling zone 5, including feed
The fan-shaped guipure 61 of 12,3, passage, the radial canal 19 being distributed in guipure, partition wall 16 and support shaft 10, and fixed by support shaft 10
In rotary hearth furnace.Single sector guipure is link plate structure, and the blanking that orlop sector net conveyor 6 is formed with adjacent barricade 16 is led to
Road 9 is located above rotary hearth furnace cloth area 1, and orlop sector net conveyor 6 is apart from furnace bottom 400mm.
It is 900mm with radial canal 19 centre-to-centre spacing in layer guipure, two-layer guipure centre distance is 400mm.Fan-shaped guipure by
Dividing plate 7 is divided into 3 endless tracks, and endless track is consistent with the radian on rotary hearth furnace circumferencial direction, guipure transverse section with turn
Bottom stove radial direction is parallel.Radial canal 19 maximum temperature is 1100 DEG C.
Fan-shaped guipure 61 is made up of metal gauze, and aperture is 2mm, and its end blanking channel 9 is apart from the width of furnace bottom
100mm.
The barricade 16 at distribution device two ends is 150mm apart from rotary furnace bottom height.
Retracting device 17 is arranged on the top above fan-shaped guipure distributing device, and in the side near guipure.
Aqueous green-ball contacts with up preheating gas in guipure running, is subject to radial canal 19 in guipure simultaneously
Heat radiation, green-ball is gradually oven-dried, preheats.Cooling zone 5 is provided with gas blowing device 18, and the oxidizing gas of its injection are sky
Gas and rotary hearth furnace flue gas.Oxidizing gas are contacted with green-ball, promote the compound of the lead in pelletizing, zinc, copper to occur at high temperature
Reaction, is generated corresponding metal chloride, is reclaimed by retracting device 17, simultaneously the oxidized removing of sulfur.
Dry the blanking channel 9 entrance rotary hearth furnace cloth area 1 that the pelletizing after preheating passes through fan-shaped guipure, sequentially pass through preheating
Area 2, middle warm area 3, high-temperature region 4, pelletizing is 40min in this stage residence time, and high-temperature region temperature is 1250 DEG C.Pelletizing is in high temperature
Issue raw reduction reaction, obtain high temperature reduction product.Subsequently high temperature reduction product reaches cooling zone 5, after cooling, by turning bottom
Furnace discharge device 11 discharges out of the furnace.
Rotary hearth furnace direct-reduction result reaches 88.13% for copper removal efficiency, and zinc removal efficiency reaches 98.23%, and lead removal efficiency reaches
98.26%.
The hot reduzate of reduzate discharging opening discharge is sent directly into fusing segregation apparatuss S400 and carries out molten point, adds
10% quick lime makees flux, at 1600 DEG C of temperature, is incubated 60min, slag sluicing system, the liquid slag obtaining is sent directly into system
Standby mineral wool device S500 is used for producing mineral wool, obtains the molten iron product of iron content 96.77%, cupric 0.03%, sulfur-bearing 0.05% simultaneously
Product.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy describing with reference to this embodiment or example
Point is contained at least one embodiment or the 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.And, the specific features of description, structure, material or feature can be in office
Combine in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel
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 be interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
1. a kind of system processing copper ashes is it is characterised in that include：Spray pretreatment unit (S100), raw material shaped device
(S200), rotary hearth furnace is reduced directly system (S300), fusing segregation apparatuss (S400) and prepares mineral wool device (S500)；Wherein,
The discharging opening of spray pretreatment unit (S100) is communicated with the feeding mouth of raw material shaped device (S200), raw material shaped device
(S200) feeding mouth that discharging opening is reduced directly system (S300) with rotary hearth furnace communicates, rotary hearth furnace direct-reduction system (S300)
Discharging opening with fusing segregation apparatuss (S400) feeding mouth communicate, fusing segregation apparatuss (S400) discharging opening with prepare mineral wool
The feeding mouth of device (S500) communicates；Described rotary hearth furnace direct-reduction system (S300) inclusion annular body of heater and rotatably annular
Furnace bottom, is circumferentially disposed with cloth area (1), preheating zone (2), middle warm area (3), height in the annular furnace of described rotary hearth furnace
Warm area (4) and cooling zone (5), and cooling zone (5) and cloth area (1) are adjacent, between cloth area (1) and preheating zone (2), high-temperature region
(4) barricade (16) using radial direction and cooling zone (5) between separates, and leaves energy between the lower end of this barricade (16) and ring-shaped furnace bottom
Enough intervals at least through one layer of material；
Wherein, described cloth area (1) and cooling zone (5) are adjacent is located between two barricades (16a, 16b), in this cloth area (1)
The fan-shaped guipure distributing device being made up of multilamellar sector net conveyor (6) with horizontally set on cooling zone (5), fan-shaped guipure cloth
Glassware transverse section two ends, between barricade (16a, 16b), correspond to the side of cooling zone (5) above this fan-shaped guipure distributing device
It is provided with feeder channel (12)；Set on internal and external circumferential furnace wall between basecoat sector guipure and layer second from the bottom sector guipure
There is gas blowing device (18)；In the centre of fan-shaped net conveyor (6) circumferentially uniform intervals arrangement radial canal (19)；Corresponding to
Top above this fan-shaped guipure distributing device is provided with retracting device (17).
2. system according to claim 1 it is characterised in that：Described fan-shaped guipure distributing device by multilamellar between the upper and lower every
Fan-shaped net conveyor (6) composition of setting, adjacent fan-shaped net conveyor (6) alternates, in circumferencial direction, the segment distance that staggers
As blanking channel (9) from last layer sector net conveyor (6) end to next layer of fan-shaped net conveyor (6) head end blanking,
The head end of the corresponding following fan-shaped net conveyor (6) of each this blanking channel (9) is provided with striker plate (13)；The sector of the superiors
Net conveyor is located at the lower section of feeder channel (12), and the blanking that undermost sector net conveyor end is formed with adjacent partition wall is led to
Road (9), described blanking channel (9) is located at the top in cloth area.
3. system according to claim 2 it is characterised in that：Fan-shaped net conveyor (6) described in each layer includes supporting
Axle (10), drive sprocket (14) and fan-shaped guipure (61)；Radial rotating is supported on fan-shaped net transmission respectively for two support shafts (10)
The two ends of band (6), respectively equipped with a drive sprocket (14), this fan-shaped guipure at each this support shaft (10) is near its two ends
(61) it is connected as closed annular band by several fan-shaped monomer carrier bars, pass through chain link (15) between adjacent monomer carrier bar and cut with scissors
Connect, be provided with, at the two ends of this chain link (15), the hole engaged with described drive sprocket (14), the both sides of this fan-shaped guipure (61)
Chain link (15) is centered around the fan-shaped net conveyor (6) of the upper composition of two drive sprockets (14)；Each layer sector net conveyor (6) is above
Fan-shaped guipure (61) in the running, is driven by power set and is moved by head end terminad.
4. system according to claim 3 it is characterised in that：Described monomer carrier bar is in annular body of heater radially by multiple tracks
The dividing plate (7) of arc is divided into some sections, and the arc of dividing plate (7) is isocentric circular arc with annular body of heater, and the height of dividing plate (7) is high
In material in the upper material bed thickness of fan-shaped guipure (61).
5. system according to claim 3 it is characterised in that：Described fan-shaped guipure (61) by wire netting or is uniformly distributed
The metallic plate of pore (8) is made.
6. system according to claim 1 it is characterised in that：The radial direction axially along annular body of heater of described radial canal (19)
Direction is arranged.
7. system according to claim 1 it is characterised in that：It is arranged on the fan on cloth area (1) and cooling zone (5)
Shape guipure distributing device, its overhead height protrudes from or parallel to rotary hearth furnace burner hearth overhead height.
8. the system any one of a kind of utilization claim 1-7 processes the method for copper ashes it is characterised in that including：
(1) in copper ashes, spray additive solution carries out pretreatment to copper ashes in pretreatment unit (S100)；
(2), after pretreated copper ashes being mixed homogeneously with reducing agent and binding agent, make in pressure ball molding system (S200)
Aqueous green pellets；
(3) aqueous green pellets by rotary hearth furnace be reduced directly system (S300) feeder channel (12) equably cloth in fan-shaped net
Band (61) is upper and operates forward with guipure；Wherein, radial canal (19) carries out heat radiation to aqueous green-ball, dries and preheats green-ball
Group；The oxidizing gas that gas blowing device (18) is blown, promote the compound of the lead in pelletizing, zinc, copper to react at high temperature
Generate corresponding metal chloride；The metal chloride volatilization generating is reclaimed by retracting device (17), meanwhile, sulfur in copper ashes
Discharged out of the furnace by retracting device (17) after oxidized；The pelletizing of preheating is arrived by the blanking channel (9) of orlop sector guipure
Reach rotary hearth furnace cloth area (1), sequentially pass through rotary hearth furnace preheating zone (2), middle warm area (3), high-temperature region (4) generation reduction reaction, obtain
Reduzate to high temperature；The reduzate of high temperature enters cooling zone (5), is discharged out of the furnace by drawing mechanism (11) after cooling；
(4) reduzate discharging out of the furnace is sent into molten separating device (S400) and carry out molten point, obtain the relatively low molten iron of cupric sulfur-bearing
And liquid slag；
(5) liquid slag feeding prepares mineral wool device (S500), obtains mineral wool product.
9. in accordance with the method for claim 8 it is characterised in that：Additive solution described in step (1) is that calcium chloride is molten
Any one of liquid, sodium chloride solution or sodium chloride-containing, the industrial wastes of calcium chloride or multiple；Aqueous described in step (2)
Moisture≤15% in green pellets.
10. in accordance with the method for claim 8 it is characterised in that：The oxidation that in step (3), gas blowing device (18) is blown
Property gas be one or more of air, oxygen or rotary hearth furnace flue gas；The radiation temperature of described radial canal (19) is 550-
1100℃.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107475476A (en) * | 2017-06-28 | 2017-12-15 | 昆明理工大学 | A kind of method that copper-containing residue chlorination melting and reducing one-step method prepares the pig iron |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107475476A (en) * | 2017-06-28 | 2017-12-15 | 昆明理工大学 | A kind of method that copper-containing residue chlorination melting and reducing one-step method prepares the pig iron |
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