CN106369994B - Rotary kiln fluosolids roasting device and roasting technique - Google Patents
Rotary kiln fluosolids roasting device and roasting technique Download PDFInfo
- Publication number
- CN106369994B CN106369994B CN201610982966.9A CN201610982966A CN106369994B CN 106369994 B CN106369994 B CN 106369994B CN 201610982966 A CN201610982966 A CN 201610982966A CN 106369994 B CN106369994 B CN 106369994B
- Authority
- CN
- China
- Prior art keywords
- rotary kiln
- air
- kiln body
- windband
- total
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/12—Rotary-drum furnaces, i.e. horizontal or slightly inclined tiltable
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/34—Arrangements of heating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/36—Arrangements of air or gas supply devices
- F27B7/362—Introducing gas into the drum axially or through the wall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/36—Arrangements of air or gas supply devices
- F27B7/362—Introducing gas into the drum axially or through the wall
- F27B2007/367—Introducing gas into the drum axially or through the wall transversally through the wall of the drum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/03—Calcining
Abstract
The invention discloses rotary kiln fluosolids roasting device and roasting techniques, rotary kiln fluosolids roasting device includes the rotary kiln body being sequentially communicated, total windband and air blower, on the outer wall for the middle-temperature section that total windband is socketed in the rotary kiln body, the outside of total windband is arranged in the air blower.Air-jet device is communicated between the rotary kiln body and total windband, the inside of the rotary kiln body is arranged in the air-jet device.The application method of rotary kiln fluosolids roasting device is the following steps are included: ingredient, charging, starting rotary kiln, roasting or calcining, collection flue dust, collection kiln slag, processing flue dust and processing kiln slag.Air blower air blast into rotary kiln body compared with prior art, increase the oxygen content in air inside rotary kiln body, material is stirred simultaneously, increase the contact surface base of material and air, to reduce the ingredient of coal dust, have heat utilization efficiency high, volatile matter volatilization is high-efficient, it is good to refine effect, the low advantage of energy consumption, smelting cost.
Description
Technical field
The present invention relates to metallurgical technology fields, are rotary kiln fluosolids roasting device and roasting technique specifically.
Background technique
Rotary kiln is that rotate firing be a kind of long 32-50m, the cylinder that diameter is 1800-3500mm, has and successively connects
Logical kiln tail, kiln body and kiln hood, kiln hood are the discharging portions of rotary kiln, and kiln tail is the feeding part of rotary kiln, coal dust, natural gas
Equal fuel are sent into rotary kiln from kiln hood, and the mineral mixed with reducing agents such as coal dusts are added in rotary kiln by kiln tail, kiln body
It is followed successively by low-temperature zone, middle-temperature section and high temperature section from kiln tail to kiln hood, is propped up on the horizontal support roller for being mounted on 3-5 group of rotary kiln
Support is driven by gear-wheel gear-ring and realizes rotary motion, and the inclination angle on rotary kiln and ground is 3-5%, and kiln tail is high, kiln hood
It is low.Non-ferrous metal metallurgy, chemical industry and other industry in the prior art are all since the dawn of human civilization using this rotary kiln come to mineral
It is roasted and is calcined, the greatest problem of this traditional rotary kiln is that motion state of the material in kiln in kiln is half rolling
Dynamic state, makes mineral that can not fully contact with oxygen, coke powder or coal dust can not be made fully to contact with oxygen to generate
Reducing gas CO simultaneously makes CO full combustion, causes the reduction effect of mineral poor, can not make harmful volatile metal and
Nonmetallic come into full contact with oxygen causes volatility low, and when ingredient must be incorporated in material weight ratio be 40-45% even
Be 50% coke powder or coal dust and dust coal and blast roasting in kiln hood, cause energy waste, therefore this is non-ferrous metal metallurgy
The technical problem of industry, and the technical problem high in other industry heat utilization efficiency low energy consumption using rotary kiln.Now need one kind
The contact area that can be improved mineral and oxygen is capable of providing sufficient oxygen, reduces coal dust or coke powder ingredient specific gravity, and can
Movement of the mineral in rotary kiln in rolling or flow regime, with reach make volatile matter evaporation rate faster, roasting it is more thorough,
Refining effect is improved, energy consumption is reduced, reduces smelting cost, improve the purpose of Business Economic Benefit.
Summary of the invention
It is an object of the invention to design rotary kiln fluosolids roasting device and roasting technique, there is heat utilization efficiency height,
Volatile matter volatilization is high-efficient, and refining effect is good, the low advantage of energy consumption, smelting cost.
The present invention is achieved through the following technical solutions:
Rotary kiln fluosolids roasting device, including the rotary kiln body, total windband and air blower being sequentially communicated, total windband
It is socketed on the outer wall of the rotary kiln body, the outside of total windband is arranged in the air blower.Air blower passes through air
Total windband is blown into the inside of rotary kiln body, the intracorporal oxygen content of rotary kiln is improved, to improve anti-inside rotary kiln body
Efficiency is answered, and when the wind pressure blasted is sufficiently strong, just the material inside the rotary kiln body can be blown to stir,
So that the contact area of material and air increases, the reaction efficiency of material is improved.
Further to better implement the present invention, following setting structures are especially used: further including being arranged in the revolution
Air-jet device inside kiln body, the air-jet device are connected to total windband.The high pressure gas sent from air blower passes through total
Windband enters air-jet device, then is ejected into inside rotary kiln body from air-jet device, is conducive to for gas being oriented in rotary kiln body
The corresponding position in portion, and spray.
Further to better implement the present invention, especially use following setting structures: the air-jet device includes at least
One jet general pipeline, the jet general pipeline are connected to total windband.Further, the air-jet device further includes air inlet
Pipe, the jet general pipeline are connected to total windband by blast pipe.Further, the both ends of the jet general pipeline are close by plug
Envelope, and offer on the jet general pipeline it is multiple with fumarole that is being connected to inside the rotary kiln body, the jet general pipeline's
Length is 5-15m, and the material of the jet general pipeline is 2520 type stainless steels.The rotary kiln rotation when, jet general pipeline in addition to
Jet can also carry out a stirring action to material, so that material is obtained the effect preferably stirred, further improve
The contact area of material and air improves the roasting effect of material.It is intracorporal that 2520 type stainless steels are resistant to rotary kiln
High temperature keeps jet general pipeline more durable.
Further to better implement the present invention, especially use following setting structures: the jet general pipeline is returned along described
The inner wall of rotary kiln body is angularly disposed.When the rotary kiln body is provided with material, the jet general pipeline be can extend into material,
And angularly disposed jet general pipeline with the rotary kiln body rotate during, front end first with the intracorporal material of rotary kiln
Contact, its rear end contacts with material and relatively lags behind, so that the turning over materials of jet general pipeline helically formula, improves the effect of stirring
Fruit enables material more fully to contact and can be come into full contact with hot-air with air, and improving heat utilization efficiency reduces energy
Consumption, improves the volatilization efficiency of volatile matter, to improve the effect of material refining.
Further to better implement the present invention, following setting structures are especially used: on the inner wall of the rotary kiln body
It is equipped with refractory material.Further, the refractory material with a thickness of 200-250mm, the blast pipe is through described resistance to
Fiery material is simultaneously connected to total windband.
Further to better implement the present invention, especially use following setting structures: the refractory material is refractory brick.
Further to better implement the present invention, especially use following setting structures: total windband includes two phases
Air-casing retaining ring to setting and the air heater baskets being arranged between air-casing retaining ring, the air heater baskets can be with the revolution
Kiln body relatively rotates；The air heater baskets include air heater baskets pipe, the both ends of the surface of the air heater baskets pipe respectively with institute
Air-casing retaining ring is stated to offset；The air-casing retaining ring is socketed on the outer wall of the rotary kiln body, and the air heater baskets pipe can be with
The rotary kiln body relatively rotates, and the air heater baskets pipe is connected to the air blower.Further, the air-casing retaining ring
It is fixedly connected on the outer wall of the rotary kiln body, and can be slided relatively between the air heater baskets pipe and the air-casing retaining ring
Dynamic, the connecting band between the air heater baskets pipe and the air-casing retaining ring forms sealing, when so that the rotary kiln body rotating,
The air heater baskets pipe can not be rotated with rotary kiln body, so that the connection and sealing of air blower and the air heater baskets pipe
It can be realized with simplest structure.
Further to better implement the present invention, following setting structures: the air heater baskets pipe and institute are especially used
Stating has gap between rotary kiln body.It avoids the air heater baskets from making to occur therewith to rub in rotary kiln body rotation and increases
Abrasion between adding.
Further to better implement the present invention, following setting structures are especially used: deviating from institute in the air-casing retaining ring
That states air heater baskets pipe is provided with triangle gusset on one side.The triangle gusset increases the air-casing retaining ring and the rotary kiln
Bonding strength between body improves the robustness of total windband.
Further to better implement the present invention, especially using following setting structures: the air heater baskets further include
Two are respectively fixedly connected with the heating muff baffle circle at the both ends of the air heater baskets pipe, the heating muff baffle circle with
The air-casing retaining ring offsets.The heating mantle baffle circle is increased relative to the air heater baskets pipe to offset with the air-casing retaining ring
With the contact area of the air-casing retaining ring, the effect of sealing is improved.
Further to better implement the present invention, especially using following setting structures: the air heater baskets further include
The semi-circular inner panel that the inner ring of the air heater baskets pipe is set and is connect with the heating muff baffle circle, the inner panel
The top of the air heater baskets pipe is set.Inner panel space segment corresponding with the air heater baskets and the revolution
The inner barrier of kiln body comes, and makes the gas that air heater baskets pipe space corresponding with inner panel is entered by air blower
It can only move to and be not provided with the space of the inner panel and enter back into the inside of rotary kiln body；Because rotary kiln body will carry out same
The rotary motion in direction, so that in the intracorporal material of the rotary kiln during the motion mainly by the one of the rotary kiln body
Side is simultaneously semicircular arc, and formed has a material and state that another side is not expected on one side, if not in the setting of the side of not material
Plate, then will have the sky of the race on one side wind that do not expect and reduce the case where kiln temperature leads to thermal loss；Therefore inner panel
Setting improves heat utilization efficiency, has saved the energy, has reduced energy consumption and cost.
Further to better implement the present invention, following setting structures: the inner panel and the rotary kiln are especially used
Gap between the outer wall of body is 20-30mm.
Further to better implement the present invention, following setting structures: the air blower and the air are especially used
Heating muff is connected to by hose.The hose can offset the relative displacement between air blower and air heater baskets pipe, can
Improve the connection reliability between the air blower and the air heater baskets pipe.
Further to better implement the present invention, following setting structures are especially used: further including being heated with the air
The bracket of casing connection, the bracket include the steady rest column of four settings on the ground, and the steady rest column uniformly divides
Cloth is provided between the steady rest column for being located at air heater baskets pipe the same side in the two sides of the air heater baskets pipe
Guide rail, the axis of the guide rail are parallel with the axis of the rotary kiln body；Air is respectively arranged on the air heater baskets pipe
Heating muff air inlet pipe and windband spindle tube, the air heater baskets pipe air inlet pipe and the windband spindle tube are separately positioned on pair
In the guide rail answered；The free end of the air heater baskets pipe air inlet pipe is connected to the hose.The air heater baskets can be
Axis direction under the action of the guide rail along the rotary kiln body moves, and in rotary kiln body rotation, the air adds
Hot jacket is not rotated with rotary kiln body.
Further to better implement the present invention, especially use following setting structures: the air heater baskets with it is described
Air-casing sealing ring is provided between air-casing retaining ring.The air-casing sealing ring is clamped in the air-casing retaining ring and the heating mantle baffle
Between circle.Air-casing sealing ring improves the sealing performance between the air heater baskets and the air-casing retaining ring, improves total wind
Wind pressure in set enables material to be reversed more abundant, mentions to improve the stream pressure that jet general pipeline is sprayed
High refining effect.
Further to better implement the present invention, following setting structures: the rotary kiln fluosolids roasting are especially used
Device further includes secondary seal circle, and the inner ring of the secondary seal circle is close to the outer ring of the heating muff baffle circle, and described two
The one side of secondary sealing ring is close to the air-casing retaining ring；It further include secondary seal circle pressing plate, the secondary seal circle is arranged in institute
It states between air-casing retaining ring and the secondary seal circle pressing plate, passes through spiral shell between the secondary seal circle pressing plate and the air-casing retaining ring
Nail compresses the secondary seal circle.The sealing performance for improving total windband, efficiently solve the air heater baskets with it is described
Air Leakage between air-casing retaining ring.
Further to better implement the present invention, especially use following setting structures: total windband is socketed in described
The middle-temperature section of rotary kiln body.
Further to better implement the present invention, following setting structures: the jet general pipeline and described time are especially used
Multiple column tubes are fixedly connected between the inner wall of rotary kiln body.Further, the column tube through the refractory material with
The inner wall of the rotary kiln body is fixedly connected；The setting of the column tube improve the jet general pipeline and the rotary kiln body it
Between connective stability so that the jet general pipeline is not susceptible to deformation or damage when overturning material.
Based on above-mentioned rotary kiln fluosolids roasting device, the present invention also provides roasting techniques, comprising the following steps:
Step S1: ingredient: when starting rotary kiln refining mineral by mineral and auxiliary material to be refined by certain weight ratio
Ingredient is carried out, and is uniformly mixed, to obtain material to be refined；
Step S2: starting rotary kiln: before the material is added, first the rotary kiln fluosolids roasting device is started
Prerun, it is ensured that operation is without exception；
Step S3: charging: the rotary kiln fluosolids roasting device run smoothly it is without exception after, by the material from kiln tail
The calcining matter charge pipe at place is added to the low-temperature zone in the rotary kiln body；
Step S4: roasting or calcining: the rotary kiln body constantly rotates, make the material in the rotary kiln body successively
It is moved by low-temperature zone, middle-temperature section and high temperature section to kiln hood, while spraying into heating material from kiln hood to make continuously to rise in rotary kiln body
Temperature roasts mineral, evaporates volatile matter from mineral in the form of ash-laden gas；And the material is turning round
When the middle-temperature section of kiln body, air blower air blast into rotary kiln body by total windband transports the material to kiln hood in flow regime
It is dynamic；
Step S5: collect cigarette, dirt: the volatile matter moves to kiln tail and draws the rotary kiln from kiln tail by air-introduced machine
It is collected in vivo by bag collection；
Step S6: collect kiln slag: the mineral formation kiln slag not evaporated in gaseous form, the kiln slag move to kiln
By recycling after head；
Step S7: processing cigarette, dirt: volatile matter after bag collection is collected, collect after sedimentation by metalliferous flue dust
Or it is sold；And remaining volatile matter is handled by waste gas purification, handles rear discharge up to standard；
Step S8: processing kiln slag: being smelted the kiln slag of collection to obtain the pig iron, and the tailings obtained after smelting is sent into
Cement plant.
Further, it is 4-25% that the auxiliary material, which accounts for the weight percent of material,.Middle auxiliary material accounts for object compared with the prior art
The weight percent of material is therefore 10-50% when roasting or calcining identical mineral, reduces making for the auxiliary material of more than half
Dosage reduces energy consumption, reduces production cost.
Further, in step S1, the auxiliary material is coal dust or coke powder.
Further, in step S4, the heating material is one of coal dust, coal gas or natural gas or a variety of.
Compared with prior art, the present invention have the following advantages that and the utility model has the advantages that
(1) in the present invention, air blower can be by the air blast into the middle-temperature section of rotary kiln body of total windband, the air energy that blasts
It is enough to stir material, and be capable of providing more oxygen, enable material in air oxygen and hot gas more fully connect
Touching；
(2) in the present invention, jet general pipeline sprays air to material and carries out spiral to material when rotary kiln body is rotated
The overturning of formula enables material, more fully with air and hot air impingement, to improve heat utilization while being in flow regime
Rate to reduce energy consumption, smelting cost, and improves the volatilization efficiency of volatile matter, improves the metallurgical effect of material.
(3) in the present invention, the proportion of coal dust or coke powder is reduced, energy consumption is reduced, improves economic benefit.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of rotary kiln fluosolids roasting device；
Fig. 2 is the schematic cross-section of rotary kiln fluosolids roasting device；
Fig. 3 is the structural schematic diagram of the air-jet device of rotary kiln fluosolids roasting device；
Fig. 4 is the enlarged drawing of part A in Fig. 1；
Fig. 5 is the roasting technique flow chart based on rotary kiln fluosolids roasting device；
Wherein, 1- jet general pipeline, 2- blast pipe, 3- air-casing retaining ring, 4- air heater baskets pipe, 5- air heater baskets pipe air inlet
Pipe, 6- windband spindle tube, 7- steady rest column, 8- guide rail, 9- heating muff baffle circle, 10- air-casing sealing ring, 11- hose,
12- column tube, 13- inner panel, 14- secondary seal circle, 15- secondary seal circle pressing plate, 16- triangle gusset.
Specific embodiment
The present invention is described in further detail below with reference to embodiment, embodiments of the present invention are not limited thereto.
Embodiment 1:
Rotary kiln fluosolids roasting device has heat utilization efficiency high, and volatile matter volatilization is high-efficient, and refining effect is good, energy consumption,
The low advantage of smelting cost is specifically arranged to following structures as shown in Figure 1, Figure 2, Figure 3, Figure 4: including the revolution being sequentially communicated
Kiln body, total windband and air blower, total windband are socketed on the outer wall of the rotary kiln body, and the air blower is arranged described
The outside of total windband.Wherein, the rotary kiln body offers multiple diameters in the medium position of wherein temperature section along circumferential direction and is
The through-hole of 70mm, total windband are connected to by the through-hole with the inside of the rotary kiln body.
Wherein, total windband includes two air-casing retaining rings 3 and the air heater baskets that are clamped between air-casing retaining ring 3；Institute
Stating air heater baskets includes air heater baskets pipe 4 and two heating mantle baffle circles 9, and heating mantle baffle circle 9 is welded on air heating
The both ends of casing 4, and the axis of heating mantle baffle circle 9 is overlapped with the axis of air heater baskets pipe 4, outside heating mantle baffle circle 9
Side is concordant with the lateral surface of air heater baskets pipe 4, and the difference of the internal-and external diameter of heating mantle baffle circle 9 is greater than air heater baskets pipe 4
The difference of internal-and external diameter；Air-casing retaining ring 3 is successively spaced the middle part for being welded on the middle-temperature section of the rotary kiln body, the air heater baskets
The axis of axis, air-casing retaining ring 3 and the rotary kiln body is overlapped, and is provided with 10mm between heating mantle baffle circle 9 and air-casing retaining ring 3
Thick air-casing sealing ring 10, the lateral surface of air heater baskets pipe 4 are socketed with the secondary seal circle 14 of 10mm thickness, secondary seal circle 14
Between being clipped in secondary seal circle 14 with air-casing retaining ring 3, the free end of secondary seal circle 14 is additionally provided with secondary seal circle pressing plate
15, secondary seal circle pressing plate 15 is fastened by bolt and air-casing retaining ring 3 and by the top of heating mantle baffle circle 9 and secondary seal circle
14 compress.
Wherein, uniform welding has multiple triangle muscle along circumferential direction between the both ends and the rotary kiln body of total windband
The particular number of plate 16, triangle gusset 16 is selected according to actual service condition, to guarantee that total windband can be firm
It is fixed in the rotary kiln body.
Wherein, the lateral wall of the air heater baskets pipe 4 is respectively welded air heater baskets pipe air inlet pipe 5 and windband main shaft
Pipe 6, air heater baskets pipe 5 are connected to air blower and air heater baskets pipe 4, air heater baskets 5 and windband spindle tube 6 company of sliding respectively
It connects in guide rail 8, guide rail 8 is fixedly connected on the steady rest column 7 for being set to ground；Wherein, the track of guide rail 8 with described time
The axis of rotary kiln body is parallel, and air heater baskets pipe 4 can be moved forward and backward along guide rail, guide rail 8 prevent air heater baskets pipe 4 from around
The axis rotation of its own, therefore air heating muff 4 is not rotated with the rotary kiln body in rotary kiln body rotation.
Wherein, there is gap, this gap forms total windband and institute between air heater baskets pipe 4 and the rotary kiln body
The gas passage between rotary kiln body is stated, enables to the rotary kiln body and air heater baskets when relatively rotating, can also lead to
Crossing the gas that air blower enters in total windband can smoothly enter into the inside of rotary kiln body, and also can be avoided air heater baskets 4
Abrasion between friction occurs therewith and increases in rotary kiln body rotation.
Embodiment 2:
The present embodiment is further optimized based on the above embodiments, further to better implement the present invention,
As shown in Fig. 2, especially using following setting structures: it is soft to be communicated with one between the air blower and air heater baskets pipe air inlet pipe 5
Pipe 11.Because rotary kiln at runtime can be mobile to kiln hood because of the gravity of itself, while it will drive the also same time shift of air heater baskets pipe 4
Dynamic, this makes the position between the air heater baskets pipe air inlet pipe 5 being welded on air heater baskets pipe 4 and the air blower be not
Stop transformation, hose 11 can offset the relative displacement between air blower and air heater baskets pipe air inlet pipe 5, can be improved described
Connection reliability between air blower and the air heater baskets pipe 4.
Embodiment 3:
The present embodiment is to advanced optimize based on any of the above embodiments, and further is preferably to realize this hair
It is bright, as shown in Figure 1, Figure 2, Figure 3, Figure 4, especially uses following setting structures: being internally provided with jet in the rotary kiln body
Device, the air-jet device include multiple jet general pipeline 1 along the oblique laying of rotary kiln body inner wall, in jet general pipeline 1
Portion is fixed by blast pipe 2 and the inner wall of the rotary kiln body, and blast pipe 2 and air heater baskets pipe 4 are the same as the rotary kiln body
Between formed gap connection；Wherein, the fumarole that multiple diameters are 5mm is offered along its axis direction on jet general pipeline 1,
Because being selected according to actual service condition, the both ends of the jet general pipeline 1 are blocked by plug to carry out the particular number of fumarole
Sealing, so that the inside of the rotary kiln body is sprayed by the fumarole by the gas of the entrance of blast pipe 2 jet general pipeline 1,
The pressure for spraying into the intracorporal gas of rotary kiln is improved, material is enable preferably to be overturn.
Wherein, the length of the jet general pipeline 1 is 5-15m, preferably 10m, and it is 60mm that the jet general pipeline 1, which is diameter,
The a length of 10m of steel pipe, material are the straight tube of 2520 type stainless steels.
Wherein, the refractory brick of 200mm-250mm thickness, fire resisting are equipped between jet general pipeline 1 and the rotary kiln body inner wall
The thickness of brick should be selected according to specific service condition, and refractory brick is laid on the inner wall of the rotary kiln body, jet general pipeline 1
Spacing 140mm between the refractory brick.Blast pipe 2 is connected to through the refractory brick and with total windband.
Wherein, multiple column tubes 12 are fixedly connected between jet general pipeline 1 and the inner wall of the rotary kiln body.Column tube 12
It is fixedly connected through the refractory brick with the inner wall of the rotary kiln body.
Embodiment 4:
The present embodiment is to advanced optimize based on any of the above embodiments, and further is preferably to realize this hair
Bright, as shown in Figure 1, Figure 2, Figure 3, Figure 4, especially use following setting structures: the air heater baskets further include being arranged in air
The inner ring of heating muff 4 and the semi-circular inner panel 13 being connect with heating muff baffle circle 9；Wherein, inner panel 13 is arranged in air
The top of heating muff 4.The space segment corresponding with air heater baskets 4 of inner panel 13 and the inner barrier of the rotary kiln body are opened
Come, move to the gas that the space corresponding with inner panel 13 of air heater baskets pipe 4 is entered by air blower can only first does not have
The space that inner panel 13 is arranged enters back into the inside of the rotary kiln body；Because rotary kiln body will carry out unidirectional revolution fortune
It is dynamic, so that in the intracorporal material of the rotary kiln during the motion mainly by one side of the rotary kiln body and in semi arch
Shape, formed has material and state that another side is not expected will if inner panel 13 is not arranged in the side of not material on one side
The case where kiln temperature leads to thermal loss is reduced in the presence of the sky of the race on one side wind that do not expect；Therefore the setting of inner panel 13 improves
Heat utilization efficiency has saved the energy, reduces energy consumption and cost.
Wherein, the gap between the inner panel 13 and the outer wall of the rotary kiln body is 20-30mm, the specific value in gap
It should be determined according to actual service condition and installation situation.
In use, starting rotary kiln, rotary kiln body is under the engaged transmission of gear-wheel gear-ring around its axis rotation, air heating
Set by the effect of guide rail 8 and steady rest column 7 so that air heater baskets do not rotate with the rotation of rotary kiln body, air blast
Wind is sequentially sent between hose 11, air heater baskets pipe air inlet pipe 5, air heater baskets pipe 4 and the rotary kiln body outer wall by machine
Gap in, the inside of blast pipe 2, jet general pipeline 1 and the rotary kiln body, pass through the gas that the fumarole of jet general pipeline 1 sprays
The bottom for flowing to material blasts a large amount of band oxygen air, meanwhile, the rotary kiln body of rotation to be arranged on rotary kiln body inner wall
The constantly turning over materials in a spiral manner of jet general pipeline 1, come into full contact with material with air, and then adequately reaction occurs.
Embodiment 5
Based on the rotary kiln fluosolids roasting device in any of the above-described embodiment, roasting technique is present embodiments provided, it is first
Auxiliary material ingredient is added in the mineral for first treating roasting, and then the mineral that ingredient is completed are put into rotary kiln body and are roasted, finally
Roasting or calcined product are handled, specifically includes the following steps:
Step S1: ingredient: when starting rotary kiln refining mineral by mineral and auxiliary material to be refined by certain weight ratio
Ingredient is carried out, and is uniformly mixed, to obtain material to be refined；
Step S2: starting rotary kiln: before the material is added, first the rotary kiln fluosolids roasting device is started
Prerun, it is ensured that operation is without exception；
Step S3: charging: the rotary kiln fluosolids roasting device run smoothly it is without exception after, by the material from kiln tail
The calcining matter charge pipe at place is added to the low-temperature zone in the rotary kiln body；
Step S4: roasting or calcining: the rotary kiln body constantly rotates, make the material in the rotary kiln body successively
It is moved by low-temperature zone, middle-temperature section and high temperature section to kiln hood, while spraying into heating material from kiln hood to make continuously to rise in rotary kiln body
Temperature roasts mineral, evaporates volatile matter from mineral in the form of ash-laden gas；And the material is turning round
When the middle-temperature section of kiln body, air blower air blast into rotary kiln body by total windband transports the material to kiln hood in flow regime
It is dynamic, and come into full contact with the material with the sufficient oxygen sprayed into and react.Air blower blasts rotary kiln body by air-jet device
The temperature that internal a large amount of oxygen can be improved middle-temperature section is higher, improves the reaction efficiency of material, improves volatility, thus
Improve the rate of roasting of material.Further, the air blower selects Roots blower, air quantity 35-60m3/ min, air blast
Pressure is 29.8KPa.
Step S5: collect cigarette, dirt: the volatile matter moves to kiln tail and draws the rotary kiln from kiln tail by air-introduced machine
It is collected in vivo by bag collection；
Step S6: collect kiln slag: the mineral formation kiln slag not evaporated in gaseous form, the kiln slag move to kiln
By recycling after head；
Step S7: processing cigarette, dirt: volatile matter after bag collection is collected, collect after sedimentation by metalliferous flue dust
Or it is sold；And remaining volatile matter is handled by waste gas purification, handles rear discharge up to standard；
Step S8: processing kiln slag: being smelted the kiln slag of collection to obtain the pig iron, and the tailings obtained after smelting is sent into
Cement plant.
Wherein, it is 4-25% that the auxiliary material, which accounts for the weight percent of material,.As it can be seen that auxiliary material accounts for object in compared with the prior art
The 10-50% for expecting weight, when roasting or calcining identical mineral, reduces the usage amount of the auxiliary material of more than half, therefore, reduces
Energy consumption, reduces production cost.
Wherein, in step S1, the auxiliary material is coal dust or coke powder.
Wherein, in step S4, the material by the air blast of the air-jet device and is turned in the middle-temperature section of rotary kiln body
Material effect, moves the material to kiln hood in flow regime, and comes into full contact with the material with the sufficient oxygen sprayed into
Reaction.It enables to the temperature of middle-temperature section higher, improves the reaction efficiency of material, improve volatility, to improve object
The rate of roasting of material.Wherein, air blower selects Roots blower, is 35-60m according to actual service condition air quantity3/ min, drum
Wind pressure is 29.8KPa.
Wherein, in step S4, the heating material is one of coal dust, coal gas or natural gas or a variety of.
Step S1 to step S8 is completed, the calcination process to mineral is just completed, entire technique can achieve reduction energy consumption, mention
The effect of height roasting efficiency.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is all according to
According to technical spirit any simple modification to the above embodiments of the invention, equivalent variations, protection of the invention is each fallen within
Within the scope of.
Claims (8)
1. rotary kiln fluosolids roasting device, it is characterised in that: including the rotary kiln body, total windband and air blower being sequentially communicated,
On the outer wall for the middle-temperature section that total windband is socketed in the rotary kiln body, the outer of total windband is arranged in the air blower
Portion；
It further include the air-jet device being arranged in inside the rotary kiln body, the air-jet device includes at least one along the revolution
The jet general pipeline (1) of the oblique laying of kiln body inner wall, offers fumarole on the jet general pipeline (1), the jet general pipeline (
1) both ends sealing, the jet general pipeline (1) are connected to total windband.
2. according to rotary kiln fluosolids roasting device described in claim 1, it is characterised in that: total windband includes two opposite
The air-casing retaining ring (3) of setting and the air heater baskets being arranged between air-casing retaining ring (3), the air heater baskets can with it is described
Rotary kiln body relatively rotates；The air heater baskets include air heater baskets pipe (4), the both ends of the air heater baskets pipe (4)
Face offsets with the air-casing retaining ring (3) respectively；The air-casing retaining ring (3) is socketed on the outer wall of the rotary kiln body, the sky
Gas heating muff (4) can be relatively rotated with the rotary kiln body, and the air heater baskets pipe (4) is connected to the air blower.
3. rotary kiln fluosolids roasting device according to claim 2, it is characterised in that: the air heater baskets further include
Two are respectively fixedly connected with the heating muff baffle circle (9) at the both ends of the air heater baskets pipe (4), the heating muff gear
Plate circle (9) offsets with the air-casing retaining ring (3).
4. rotary kiln fluosolids roasting device according to claim 3, it is characterised in that: the air blower and the air
Heating muff (4) is connected to by hose (11).
5. based on the roasting technique of rotary kiln fluosolids roasting device according to claim 1-4, feature exists
In, comprising the following steps:
Step S1: ingredient: mineral and auxiliary material to be refined are subjected to ingredient when starting rotary kiln refining mineral, and are mixed equal
It is even, to obtain material to be refined；
Step S2: it starting rotary kiln: before the material is added, first carries out the rotary kiln fluosolids roasting device to start pre- fortune
Row, it is ensured that operation is without exception；
Step S3: charging: the rotary kiln fluosolids roasting device run smoothly it is without exception after, by the material from kiln tail
Calcining matter charge pipe is added to the low-temperature zone in the rotary kiln body；
Step S4: roasting or calcining: the rotary kiln body continuous rotation passes sequentially through the material in the rotary kiln body
Low-temperature zone, middle-temperature section and high temperature section are moved to kiln hood, while being sprayed into heating from kiln hood and being expected to make continuous warming in rotary kiln body, right
Mineral are roasted, and evaporate volatile matter from mineral in the form of ash-laden gas；And the material is in rotary kiln body
Middle-temperature section when, air blower air blast into rotary kiln body by total windband moves the material to kiln hood in flow regime；
Step S5: collect cigarette, dirt: the volatile matter moves to kiln tail and is drawn in the rotary kiln body by air-introduced machine from kiln tail
It is collected by bag collection；
Step S6: kiln slag: the mineral formation kiln slag not evaporated in gaseous form is collected, after the kiln slag moves to kiln hood
By recycling.
6. rotary kiln fluosolids roasting device according to claim 5 and roasting technique, it is characterised in that: the auxiliary material accounts for
The weight percent of material is 4-25%.
7. rotary kiln fluosolids roasting device according to claim 5 and roasting technique, it is characterised in that: in step S1,
The auxiliary material is coal dust or coke powder.
8. rotary kiln fluosolids roasting device according to claim 5 and roasting technique, it is characterised in that: in step S4,
The heating material is at least one of coal dust, coal gas or natural gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610982966.9A CN106369994B (en) | 2016-10-28 | 2016-10-28 | Rotary kiln fluosolids roasting device and roasting technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610982966.9A CN106369994B (en) | 2016-10-28 | 2016-10-28 | Rotary kiln fluosolids roasting device and roasting technique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106369994A CN106369994A (en) | 2017-02-01 |
| CN106369994B true CN106369994B (en) | 2019-02-15 |
Family
ID=57894147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610982966.9A Expired - Fee Related CN106369994B (en) | 2016-10-28 | 2016-10-28 | Rotary kiln fluosolids roasting device and roasting technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106369994B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108955239B (en) * | 2018-08-03 | 2024-04-16 | 江苏奥能耐火材料有限公司 | Hearth for rotary electric heating kiln and rotary kiln body manufactured by hearth |
| CN111926136B (en) * | 2020-07-09 | 2021-09-14 | 钢铁研究总院 | Rotary kiln for directly reducing iron-containing materials |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5779468A (en) * | 1995-04-11 | 1998-07-14 | Bayer Aktiengesellschaft | Device for supplying gas to rotary kilns |
| CN1563797A (en) * | 2004-03-19 | 2005-01-12 | 华南理工大学 | Mobile harmelss incineration treatment appts. for sick fowl and livestock and refuse |
| CN201129922Y (en) * | 2007-11-23 | 2008-10-08 | 沈阳铝镁设计研究院 | Carbon element calcining rotary kiln |
| CN201340785Y (en) * | 2009-01-09 | 2009-11-04 | 福州高奇晶圆电子科技有限公司 | High frequency transformer for frequency-changing microwave oven |
| CN101838733A (en) * | 2009-12-30 | 2010-09-22 | 中国恩菲工程技术有限公司 | Roasting process of nickel-containing material |
| CN103017515A (en) * | 2013-01-24 | 2013-04-03 | 沈阳创联炉窑技术有限公司 | Carbon calcining rotary kiln |
| CN103710481A (en) * | 2013-12-03 | 2014-04-09 | 辽宁博联特冶金科技有限公司 | Secondary radial wind supply device supplying hot wind for rotary kiln |
| CN206176982U (en) * | 2016-10-28 | 2017-05-17 | 王彬海 | Rotary kiln fluidization calcination device |
-
2016
- 2016-10-28 CN CN201610982966.9A patent/CN106369994B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5779468A (en) * | 1995-04-11 | 1998-07-14 | Bayer Aktiengesellschaft | Device for supplying gas to rotary kilns |
| CN1563797A (en) * | 2004-03-19 | 2005-01-12 | 华南理工大学 | Mobile harmelss incineration treatment appts. for sick fowl and livestock and refuse |
| CN201129922Y (en) * | 2007-11-23 | 2008-10-08 | 沈阳铝镁设计研究院 | Carbon element calcining rotary kiln |
| CN201340785Y (en) * | 2009-01-09 | 2009-11-04 | 福州高奇晶圆电子科技有限公司 | High frequency transformer for frequency-changing microwave oven |
| CN101838733A (en) * | 2009-12-30 | 2010-09-22 | 中国恩菲工程技术有限公司 | Roasting process of nickel-containing material |
| CN103017515A (en) * | 2013-01-24 | 2013-04-03 | 沈阳创联炉窑技术有限公司 | Carbon calcining rotary kiln |
| CN103710481A (en) * | 2013-12-03 | 2014-04-09 | 辽宁博联特冶金科技有限公司 | Secondary radial wind supply device supplying hot wind for rotary kiln |
| CN206176982U (en) * | 2016-10-28 | 2017-05-17 | 王彬海 | Rotary kiln fluidization calcination device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106369994A (en) | 2017-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106369994B (en) | Rotary kiln fluosolids roasting device and roasting technique | |
| CN103834755A (en) | Pulverized coal preheating technique of blast furnace coal injection system | |
| CN105036134B (en) | Furnace of calcium carbide and the method for preparing calcium carbide | |
| CN104745806B (en) | A kind of difficulty selects iron ore of low ore grade shaft furnace with addition of semi-coke magnetic roasting process | |
| CN108048613A (en) | A kind of rotary hearth furnace and deep bed sintering restoring method | |
| CN106766870A (en) | A kind of high-efficient metallurgical rotary kiln for processing lead-zinc | |
| CN206176982U (en) | Rotary kiln fluidization calcination device | |
| CN206538348U (en) | A kind of active lime stone rotary kiln burning system | |
| CN106082222B (en) | A kind of system and method for double shaft furnace production calcium carbides of high temperature pressure ball | |
| CN207567272U (en) | A kind of rotary hearth furnace reduction system | |
| CN102618684B (en) | Continuous melting reduction iron-making device | |
| CN209027300U (en) | A kind of overhead rotary kiln type mineral hot furnace hot charging feeding system | |
| CN110470131A (en) | A kind of sleeve is every scorching calcining kiln | |
| CN110205431A (en) | Rotary kiln coal-based direct reduction oxygenation is molten to divide furnace short route molten iron making processes | |
| CN205329129U (en) | Sectional type rotary kiln group | |
| CN109387086A (en) | A kind of overhead rotary kiln type mineral hot furnace hot charging feeding system and technique | |
| CN201250242Y (en) | Non-blast furnace ironmaking furnace | |
| WO2021227210A1 (en) | Apparatus capable of reducing metal, and reduction process | |
| CN107655284A (en) | Novel natural gas multi-drum drier | |
| CN104032126B (en) | A kind of technique of moving bed roasting Low Grade Molybdenum Concentrates | |
| CN207193326U (en) | A kind of portable steel scrap on-line heating system | |
| CN206583285U (en) | A kind of high-efficient metallurgical rotary kiln for handling lead-zinc | |
| CN207779096U (en) | A kind of revolution incinerator for rare earth oxide roasting | |
| CN207749155U (en) | The system for preparing mineral pelletizing | |
| CN207779109U (en) | A kind of neodymium iron boron waste material thermal cycle roaster |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Binhai Inventor after: Liang Ruibing Inventor after: Liang Chao Inventor before: Wang Binhai Inventor before: Liang Ruibing |
|
| CB03 | Change of inventor or designer information | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170407 Address after: 024206 Inner Mongolia Chifeng City Industrial Park, Ningcheng County Erlong Shi Shuo Pioneer Metals Corporation Applicant after: Wang Binhai Applicant after: Liang Ruibing Applicant after: Liang Chao Address before: 024206 the Inner Mongolia Autonomous Region Chifeng City Industrial Park, Ningcheng County Erlong Shi Shuo Pioneer Metals Corporation Applicant before: Wang Binhai Applicant before: Liang Ruibing |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190215 Termination date: 20191028 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |