CN107254591B - A kind of Rare Earth Mine processing unit - Google Patents
A kind of Rare Earth Mine processing unit Download PDFInfo
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- CN107254591B CN107254591B CN201710498887.5A CN201710498887A CN107254591B CN 107254591 B CN107254591 B CN 107254591B CN 201710498887 A CN201710498887 A CN 201710498887A CN 107254591 B CN107254591 B CN 107254591B
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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
- C22B59/00—Obtaining rare earth metals
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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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
- C22B1/06—Sulfating roasting
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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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The present invention relates to a kind of Rare Earth Mine processing units, including rotary hearth furnace, slag sluicing system device, roaster and leaching pond.Pass through the improvement to each device especially roaster concrete structure so that the whole Rare Earth Mine process flow that rotary hearth furnace detaches Roasting And Leaching is more smooth, and energy consumption is lower, and environmental friendliness is improved, and Rare Earth Separation efficiency and effect are improved.
Description
Technical field
The invention belongs to Rare Earth Mine processing unit fields, and in particular to a kind of Rare Earth Mine processing unit.
Background technology
The extraction of Rare Earth Mine is broadly divided into wet method and pyrogenic process two ways, and southern ionic mine mainly uses wet-leaching,
And sulfuric acid baking lixiviation process can be used to handle in other mines.But existing sulfuric acid baking lixiviation process decomposes to improve
Calcination temperature is arranged to close to 1000 DEG C rate, and not only energy consumption is huge for such high temperature, but also generates a large amount of harmful smoke,
And a large amount of resource is expended again to the processing of these flue gases.
It is well known that Rare Earth Mine be typically all with other metallic element associations, many Rare Earth Mines in the north and iron ore association,
With the raising of environmental consciousness, the research that rotary hearth furnace is smelted is increasing.Metallurgical universities and colleges and business tie-up develop that " rotary hearth furnace is molten
Refine separation-sulfuric acid baking-water logging " iron content Rare Earth Mine separation process just in gradual perfection, but it is optimal for the flow
How equipment setting is transformed the equipment of the flow and it is made more to optimize the flow and become need there is no relevant report
Technical problems to be solved.
Invention content
A kind of Rare Earth Mine processing unit of proposition of the present invention, by rotary hearth furnace and roaster (especially roaster) progress
It improves so that continuity is realized in the whole production of Rare Earth Mine, and rare earth leaching rate is improved.
It is realized by following technological means：
A kind of Rare Earth Mine processing unit, including rotary hearth furnace, slag sluicing system device, roaster and leaching pond；
The rotary hearth furnace includes furnace wall, furnace roof and the ring-shaped furnace bottom that can be rotated, and interval is equipped with more on the furnace wall
A coal gas burner and multiple overfire air jets, and be provided with arcuate movement partition wall, the arcuate movement partition wall can be along turning bottom
Stove track and moved between the feeding mouth and discharge port of rotary hearth furnace, the arcuate movement partition wall along the ring-shaped furnace bottom turn
It is disposed with preheating zone, low-temperature reduction area, high temperature melting tabetisol, soaking zone and cooling zone on dynamic direction.
The slag sluicing system device is used to detach rare earth slag charge and pearl iron that rotary hearth furnace processing obtains later；
The roaster includes mixing chamber, baking cavity, combustion chamber and flue gas processing device；
The mixing chamber top is provided with mine feed(raw material)inlet, for after handling rotary hearth furnace and through slag sluicing system device point
Rare earth slag charge from after is placed in mixing chamber, and vitriolic acid flux instrument is provided with beside mine feed(raw material)inlet, on vitriolic acid flux instrument top
End is provided with sulfuric acid Storage Box；Mixing chamber entirety top is cylinder, and lower part is in inverted round table shape, and inverted round table shape bottom surface is opened
Mouth is simultaneously communicated with the mixing chamber outlet being vertically arranged, and is provided in mixing chamber inner cylinder bottom end identical as cylindrical inside radius
Multiple stirring blades, the multiple stirring blade is each attached on the agitating shaft of vertical center setting, agitating shaft top with set
The motor set in mixing chamber outer tip end is connected, and upper stirrer gear and lower stirrer gear are both provided on the multiple stirring blade；
The mixing chamber outlet is connected with baking cavity entrance.
The baking cavity is in integrally that cuboid is arranged, and combustion chamber is integrally enclosed in outside the baking cavity, on a baking cavity left side
Side top is provided with baking cavity entrance, and the first inclined plate is provided with below entrance, and first inclined plate is solid with left side wall with baking cavity
It connects, be arranged obliquely to the right by left side and do not contacted with right side wall, be provided with the second inclined plate below the first inclined plate, described the
Two inclined plates and baking cavity right side wall are affixed, are arranged obliquely to the left by right side and are not contacted with left side wall, under the second inclined plate
Side be provided with third inclined plate, the third inclined plate and baking cavity left side wall are affixed, by left side to the right obliquely be arranged and not with
Right side wall is contacted but is contacted with baking cavity bottom, and roasted ore outlet is vertically provided in the right vertical of the third inclined plate；
Upper right quarter is provided with the first turbine in baking cavity, and the first inclined plate leftmost side lower part is provided with the second turbine, the second inclined plate most
Lower right side is provided with third turbine, and baking cavity right side wall lower end is provided with high temperature nitrogen entrance；On the right side of baking cavity entrance
It is provided with exhanst gas outlet, the baking cavity entrance, roasted ore outlet, high temperature nitrogen entrance and exhanst gas outlet are passed through from baking cavity
Through outside combustion chamber.
Flue gas in baking cavity is transmitted in flue gas processing device by the exhanst gas outlet by flue gas dispatch tube, the cigarette
Flash Gas Compression Skid System includes cyclone dust collectors, acid mist scrubbing tower, cooling settling tank, flue gas liquefaction tower, cyclone separator and bubble successively
Foam absorption tower, the gas discharge outlet of gas after foam absorbing tower top end is equipped with for emission treatment.
The pond of leaching is used to carry out leaching process to the Rare Earth Mine after roasting.
Preferably, the upper stirrer gear is uniformly arranged on the top of stirring blade, the lower stirrer gear setting is being stirred
Blade lower part is close to the position of root of blade.
Preferably, the length of the upper stirrer gear is 2~3 times of the lower stirring tine length.
Preferably, first turbine is identical with third turbine rotation direction, second turbine rotation direction and the
One turbine and third turbine are opposite.
Preferably, first turbine and third turbine by rotation by gas to blowing on the left of baking cavity, described the
Two turbines are blown gas to baking cavity right side by rotation.
Preferably, each stirring blade is provided with 3~6 upper stirrer gears, each stirring blade is provided under 1~2
Stirrer gear.
Preferably, the high temperature nitrogen entrance sprays into high temperature nitrogen using the pressure (i.e. non-high pressure) of micro- high pressure.
Preferably, being also equipped with air pump on pipeline between the cyclone separator and the foam absorbing tower, use
In the pressure for increasing transmission gas.
Preferably, being built into using refratory insulating brick outside the combustion chamber.
Preferably, first inclined plate, the second inclined plate, third inclined plate angle with horizontal plane are 5~15 °.
Preferably, being both provided with conveyer belt on first inclined plate, the second inclined plate, third inclined plate.
The directions setting such as so-called " left side " " right side " "upper" "lower" of the invention each means what the sequence installed in horizontal plane was arranged
Equipment is referred to from the side view diagram of equipment with respect to the direction of observer.
Effect of the invention is that：
1, pass through in roaster be arranged three layers of inclined plate being mutually inclined so that the mixture of rare earth miberal powder and sulfuric acid along
Inclined plate level-one level-one moves down, and in the case where not increasing occupation area of equipment, substantially prolongs mineral roasting path, from
And it roasts more abundant.Due to being provided with rotary hearth furnace before the roaster of the present invention, and pass through after rotary hearth furnace processing and through slag
Rare earth is largely enriched with by the rare earth slag mineral aggregate obtained after the separation of iron separator so that the intensity of roasting of roasting process is significantly
It reduces, to which continuous production is more prone to, the rare earth slag mine handled by rotary hearth furnace is added to roaster entrance in serialization
Powder, the inclined plate being then mutually inclined by three layers, the movement by mixture in layer step by step, to mixture in moving process
Heating roasting is carried out, roasts and completes after afterbody inclined plate, continuously discharge from outlet, to whole continuous production, is made
Continuous production is obtained to be possibly realized.
2, by being provided with high temperature nitrogen, and it is complete to control gas flow and mineral flow direction in conjunction with three turbines
Contrary, to coming into full contact with by high-temperature gas and mineral, so that mineral temperature is uniform, and the moment keeps high temperature.By
The rare earth grade in Rare Earth Mine is greatly improved in rotary hearth furnace, therefore combustion chamber does not need to that excessively high temperature is arranged, then
Heating in conjunction with the reverse high-temperature gas of unique design of the present invention and heat preserving mode so that it is only necessary to be arranged relatively for combustion chamber
Extraordinary roasting effect can be realized in low temperature, so that combustion chamber is not necessarily to excessive energy expenditure, greatly saves
The energy.
By the way that turbine is arranged in specific position, in conjunction with angularly disposed inclined plate so that forming air whirl at turning,
To extend gas existence time in baking cavity, the heat transfer between gas and mineral is enhanced, the thermal efficiency is improved.
Due to being passed through high temperature nitrogen in roaster, so that sulfureous in flue gas acid fume content is reduced, in conjunction with spy
The setting of all parts in fixed flue gas processing device, so that fume treatment efficiency and quality are also improved.
3, the mixing chamber by the way that special shape is arranged coordinates specific stirring blade so that Rare Earth Mine and sulfuric acid are in mixing chamber
It is interior to reach sufficient mixing.Since stirring blade is horizontally set on the middle part (and laterally filling up) of entire chamber so that Suo Youcong
The mineral and sulfuric acid that open top enters can all be stirred blade and be stirred, while by being provided with vertically on stirring blade top
Rack strengthens stirring, rack is also provided at blade lower central position, carries out strengthening again to the mixture by blade stirring
Mix so that mixture in mixing chamber i.e. realize highly uniform mixing, to realize in baking cavity substantially without
Stirring.
Description of the drawings
Fig. 1 is the structural schematic diagram of present invention roasting furnace main body.
Fig. 2 is the structural schematic diagram of the flue gas processing device of roaster of the present invention.
Wherein：1- mixing chambers, 11- mines feed(raw material)inlet, 12- sulfuric acid Storage Boxes, 121- vitriolic acid flux instrument, 13- mixing chambers go out
Mouthful, 21- motors, 22- agitating shafts, 23- stirring blades, the upper stirrer gears of 24-, stirrer gear under 25-, 3- baking cavities, 31- first is tiltedly
Plate, the second inclined plates of 32-, 33- third inclined plates, the second turbines of 34-, the first turbines of 35-, 36- third turbines, 37- high temperature nitrogens enter
Mouthful, 38- exhanst gas outlets, 39- roasted ores export, the combustion chambers 4-, 5- flue gas processing devices, 51- flue gas dispatch tubes, and 52- whirlwind removes
Dirt device, 53- acid mist scrubbing towers, 54- cooling settling tanks, 55- flue gases liquefaction tower, 56- cyclone separators, 57- foam absorbing towers,
58- gas discharge outlets.
Specific implementation mode
Embodiment 1
As depicted in figs. 1 and 2,
A kind of Rare Earth Mine processing unit, including rotary hearth furnace, slag sluicing system device, roaster and leaching pond.
The rotary hearth furnace includes furnace wall, furnace roof and the ring-shaped furnace bottom that can be rotated, and interval is equipped with more on the furnace wall
A coal gas burner and multiple overfire air jets, and be provided with arcuate movement partition wall, the arcuate movement partition wall can be along turning bottom
Stove track and moved between the feeding mouth and discharge port of rotary hearth furnace, the arcuate movement partition wall along the ring-shaped furnace bottom turn
It is disposed with preheating zone, low-temperature reduction area, high temperature melting tabetisol, soaking zone and cooling zone on dynamic direction.
The slag sluicing system device is used to detach rare earth slag charge and pearl iron that rotary hearth furnace processing obtains later.
The roaster includes mixing chamber, baking cavity, combustion chamber and flue gas processing device.
The mixing chamber top is provided with mine feed(raw material)inlet, for after handling rotary hearth furnace and through slag sluicing system device point
Rare earth slag charge from after is placed in mixing chamber, and vitriolic acid flux instrument is provided with beside mine feed(raw material)inlet, on vitriolic acid flux instrument top
End is provided with sulfuric acid Storage Box；Mixing chamber entirety top is cylinder, and lower part is in inverted round table shape, and inverted round table shape bottom surface is opened
Mouth is simultaneously communicated with the mixing chamber outlet being vertically arranged, and is provided in mixing chamber inner cylinder bottom end identical as cylindrical inside radius
Multiple stirring blades, the multiple stirring blade is each attached on the agitating shaft of vertical center setting, agitating shaft top with set
The motor set in mixing chamber outer tip end is connected, and upper stirrer gear and lower stirrer gear are both provided on the multiple stirring blade；
The mixing chamber outlet is connected with baking cavity entrance.
The upper stirrer gear is uniformly arranged on the top of stirring blade, and the lower stirrer gear setting is leaned in stirring blade lower part
The position of nearly root of blade.
The length of the upper stirrer gear is 2.2 times of the lower stirring tine length.
Each stirring blade is provided with 3 upper stirrer gears, and each stirring blade is provided with 1 lower stirrer gear.
The baking cavity is in integrally that cuboid is arranged, and combustion chamber is integrally enclosed in outside the baking cavity, on a baking cavity left side
Side top is provided with baking cavity entrance, and the first inclined plate is provided with below entrance, and first inclined plate is solid with left side wall with baking cavity
It connects, be arranged obliquely to the right by left side and do not contacted with right side wall, be provided with the second inclined plate below the first inclined plate, described the
Two inclined plates and baking cavity right side wall are affixed, are arranged obliquely to the left by right side and are not contacted with left side wall, under the second inclined plate
Side be provided with third inclined plate, the third inclined plate and baking cavity left side wall are affixed, by left side to the right obliquely be arranged and not with
Right side wall is contacted but is contacted with baking cavity bottom, and roasted ore outlet is vertically provided in the right vertical of the third inclined plate；
Upper right quarter is provided with the first turbine in baking cavity, and the first inclined plate leftmost side lower part is provided with the second turbine, the second inclined plate most
Lower right side is provided with third turbine, and baking cavity right side wall lower end is provided with high temperature nitrogen entrance；On the right side of baking cavity entrance
It is provided with exhanst gas outlet, the baking cavity entrance, roasted ore outlet, high temperature nitrogen entrance and exhanst gas outlet are passed through from baking cavity
Through outside combustion chamber.
First turbine is identical with third turbine rotation direction, second turbine rotation direction and the first turbine and the
Three turbines are opposite.
First turbine and third turbine are blown gas to baking cavity left side by rotation, and second turbine passes through
Rotation blows gas to baking cavity right side.
Flue gas in baking cavity is transmitted in flue gas processing device by the exhanst gas outlet by flue gas dispatch tube, the cigarette
Flash Gas Compression Skid System includes cyclone dust collectors, acid mist scrubbing tower, cooling settling tank, flue gas liquefaction tower, cyclone separator and bubble successively
Foam absorption tower, the gas discharge outlet of gas after foam absorbing tower top end is equipped with for emission treatment.
The pond of leaching is used to carry out leaching process to the Rare Earth Mine after roasting.
The high temperature nitrogen entrance sprays into high temperature nitrogen by the way of non-high pressure, if using high pressure, can make chamber
Interior gas flow rates are promoted, and are unfavorable for heat exchange instead, and at the same time, can cavity pressure be increased using high pressure, flue gas
Amount increases, so that fume treatment intensity increases.
It is also equipped with air pump on pipeline between the cyclone separator and the foam absorbing tower, for increasing transmission
The pressure of gas.
It is built into using refratory insulating brick outside the combustion chamber.
Comparative example 1
This comparative example is not provided with high temperature nitrogen entrance, other set-up modes are same as Example 1.By life in 12 days
It is obtained after production experiment, combustion furnace fuel usage amount is than embodiment 1 high 62%, and Roasting Decomposition rate is compared with embodiment 1 low 1.2%.
Embodiment 2
A kind of Rare Earth Mine processing unit, including rotary hearth furnace, slag sluicing system device, roaster and leaching pond.
The rotary hearth furnace includes furnace wall, furnace roof and the ring-shaped furnace bottom that can be rotated, and interval is equipped with more on the furnace wall
A coal gas burner and multiple overfire air jets, and be provided with arcuate movement partition wall, the arcuate movement partition wall can be along turning bottom
Stove track and moved between the feeding mouth and discharge port of rotary hearth furnace, the arcuate movement partition wall along the ring-shaped furnace bottom turn
It is disposed with preheating zone, low-temperature reduction area, high temperature melting tabetisol, soaking zone and cooling zone on dynamic direction.
The slag sluicing system device is used to detach rare earth slag charge and pearl iron that rotary hearth furnace processing obtains later.
The roaster includes mixing chamber, baking cavity, combustion chamber and flue gas processing device.
The mixing chamber top is provided with mine feed(raw material)inlet, for after handling rotary hearth furnace and through slag sluicing system device point
Rare earth slag charge from after is placed in mixing chamber, and vitriolic acid flux instrument is provided with beside mine feed(raw material)inlet, on vitriolic acid flux instrument top
End is provided with sulfuric acid Storage Box；Mixing chamber entirety top is cylinder, and lower part is in inverted round table shape, and inverted round table shape bottom surface is opened
Mouth is simultaneously communicated with the mixing chamber outlet being vertically arranged, and is provided in mixing chamber inner cylinder bottom end identical as cylindrical inside radius
Multiple stirring blades, the multiple stirring blade is each attached on the agitating shaft of vertical center setting, agitating shaft top with set
The motor set in mixing chamber outer tip end is connected, and upper stirrer gear and lower stirrer gear are both provided on the multiple stirring blade；
The mixing chamber outlet is connected with baking cavity entrance.
The upper stirrer gear is uniformly arranged on the top of stirring blade, and the lower stirrer gear setting is leaned in stirring blade lower part
The position of nearly root of blade.
The length of the upper stirrer gear is 2.6 times of the lower stirring tine length.
Each stirring blade is provided with 5 upper stirrer gears, and each stirring blade is provided with 2 lower stirrer gears.
The baking cavity is in integrally that cuboid is arranged, and combustion chamber is integrally enclosed in outside the baking cavity, on a baking cavity left side
Side top is provided with baking cavity entrance, and the first inclined plate is provided with below entrance, and first inclined plate is solid with left side wall with baking cavity
It connects, be arranged obliquely to the right by left side and do not contacted with right side wall, be provided with the second inclined plate below the first inclined plate, described the
Two inclined plates and baking cavity right side wall are affixed, are arranged obliquely to the left by right side and are not contacted with left side wall, under the second inclined plate
Side be provided with third inclined plate, the third inclined plate and baking cavity left side wall are affixed, by left side to the right obliquely be arranged and not with
Right side wall is contacted but is contacted with baking cavity bottom, and roasted ore outlet is vertically provided in the right vertical of the third inclined plate；
Upper right quarter is provided with the first turbine in baking cavity, and the first inclined plate leftmost side lower part is provided with the second turbine, the second inclined plate most
Lower right side is provided with third turbine, and baking cavity right side wall lower end is provided with high temperature nitrogen entrance；On the right side of baking cavity entrance
It is provided with exhanst gas outlet, the baking cavity entrance, roasted ore outlet, high temperature nitrogen entrance and exhanst gas outlet are passed through from baking cavity
Through outside combustion chamber.
First inclined plate, the second inclined plate, third inclined plate angle with horizontal plane are 8 °.
First inclined plate, the second inclined plate are both provided with conveyer belt on third inclined plate, and the conveyer belt is to be wrapped in tiltedly
Circulating conveyer belt on plate.
First turbine is identical with third turbine rotation direction, second turbine rotation direction and the first turbine and the
Three turbines are opposite.
First turbine and third turbine are blown gas to baking cavity left side by rotation, and second turbine passes through
Rotation blows gas to baking cavity right side.
Flue gas in baking cavity is transmitted in flue gas processing device by the exhanst gas outlet by flue gas dispatch tube, the cigarette
Flash Gas Compression Skid System includes cyclone dust collectors, acid mist scrubbing tower, cooling settling tank, flue gas liquefaction tower, cyclone separator and bubble successively
Foam absorption tower, the gas discharge outlet of gas after foam absorbing tower top end is equipped with for emission treatment.
It is also equipped with air pump on pipeline between the cyclone separator and the foam absorbing tower, for increasing transmission
The pressure of gas.
The high temperature nitrogen entrance sprays into high temperature nitrogen using the pressure of micro- high pressure.
It is built into using refratory insulating brick outside the combustion chamber.
The pond of leaching is used to carry out leaching process to the Rare Earth Mine after roasting.
Embodiment 3
A kind of Rare Earth Mine processing unit, including rotary hearth furnace, slag sluicing system device, roaster and leaching pond.
The rotary hearth furnace includes furnace wall, furnace roof and the ring-shaped furnace bottom that can be rotated, and interval is equipped with more on the furnace wall
A coal gas burner and multiple overfire air jets, and be provided with arcuate movement partition wall, the arcuate movement partition wall can be along turning bottom
Stove track and moved between the feeding mouth and discharge port of rotary hearth furnace, the arcuate movement partition wall along the ring-shaped furnace bottom turn
It is disposed with preheating zone, low-temperature reduction area, high temperature melting tabetisol, soaking zone and cooling zone on dynamic direction.
The slag sluicing system device is used to detach rare earth slag charge and iron product that rotary hearth furnace processing obtains later.
The roaster includes mixing chamber, baking cavity, combustion chamber and flue gas processing device.
The mixing chamber top is provided with mine feed(raw material)inlet, for after handling rotary hearth furnace and through slag sluicing system device point
Rare earth slag charge from after is placed in mixing chamber, and vitriolic acid flux instrument is provided with beside mine feed(raw material)inlet, on vitriolic acid flux instrument top
End is provided with sulfuric acid Storage Box；Mixing chamber entirety top is cylinder, and lower part is in inverted round table shape, and inverted round table shape bottom surface is opened
Mouth is simultaneously communicated with the mixing chamber outlet being vertically arranged, and is provided in mixing chamber inner cylinder bottom end identical as cylindrical inside radius
Multiple stirring blades, the multiple stirring blade is each attached on the agitating shaft of vertical center setting, agitating shaft top with set
The motor set in mixing chamber outer tip end is connected, and upper stirrer gear and lower stirrer gear are both provided on the multiple stirring blade；
The mixing chamber outlet is connected with baking cavity entrance.
The upper stirrer gear is uniformly arranged on the top of stirring blade, and the lower stirrer gear setting is leaned in stirring blade lower part
The position of nearly root of blade.
The length of the upper stirrer gear is 2.3 times of the lower stirring tine length.
Each stirring blade is provided with 6 upper stirrer gears, and each stirring blade is provided with 2 lower stirrer gears.
The baking cavity is in integrally that cuboid is arranged, and combustion chamber is integrally enclosed in outside the baking cavity, on a baking cavity left side
Side top is provided with baking cavity entrance, and the first inclined plate is provided with below entrance, and first inclined plate is solid with left side wall with baking cavity
It connects, be arranged obliquely to the right by left side and do not contacted with right side wall, be provided with the second inclined plate below the first inclined plate, described the
Two inclined plates and baking cavity right side wall are affixed, are arranged obliquely to the left by right side and are not contacted with left side wall, under the second inclined plate
Side be provided with third inclined plate, the third inclined plate and baking cavity left side wall are affixed, by left side to the right obliquely be arranged and not with
Right side wall is contacted but is contacted with baking cavity bottom, and roasted ore outlet is vertically provided in the right vertical of the third inclined plate；
Upper right quarter is provided with the first turbine in baking cavity, and the first inclined plate leftmost side lower part is provided with the second turbine, the second inclined plate most
Lower right side is provided with third turbine, and baking cavity right side wall lower end is provided with high temperature nitrogen entrance；On the right side of baking cavity entrance
It is provided with exhanst gas outlet, the baking cavity entrance, roasted ore outlet, high temperature nitrogen entrance and exhanst gas outlet are passed through from baking cavity
Through outside combustion chamber.
First inclined plate, the second inclined plate, third inclined plate angle with horizontal plane are 6 °.
First turbine is identical with third turbine rotation direction, second turbine rotation direction and the first turbine and the
Three turbines are opposite.
First turbine and third turbine are blown gas to baking cavity left side by rotation, and second turbine passes through
Rotation blows gas to baking cavity right side.
Flue gas in baking cavity is transmitted in flue gas processing device by the exhanst gas outlet by flue gas dispatch tube, the cigarette
Flash Gas Compression Skid System includes cyclone dust collectors, acid mist scrubbing tower, cooling settling tank, flue gas liquefaction tower, cyclone separator and bubble successively
Foam absorption tower, the gas discharge outlet of gas after foam absorbing tower top end is equipped with for emission treatment.
It is also equipped with air pump on pipeline between the cyclone separator and the foam absorbing tower, for increasing transmission
The pressure of gas.
The high temperature nitrogen entrance sprays into high temperature nitrogen using the pressure of micro- high pressure, and the temperature of the high temperature nitrogen is 390
℃。
It is built into using refratory insulating brick outside the combustion chamber.
The pond of leaching is used to carry out leaching process to the Rare Earth Mine after roasting.
Claims (8)
1. a kind of Rare Earth Mine processing unit, which is characterized in that including rotary hearth furnace, slag sluicing system device, roaster and leach pond；
The rotary hearth furnace includes furnace wall, furnace roof and the ring-shaped furnace bottom that can be rotated, and interval is equipped with multiple coals on the furnace wall
Gas burner and multiple overfire air jets, and it is provided with arcuate movement partition wall, the arcuate movement partition wall can be along rotary hearth furnace rail
Road and moved between the feeding mouth and discharge port of rotary hearth furnace, the arcuate movement partition wall along the ring-shaped furnace bottom rotation side
It is disposed with preheating zone, low-temperature reduction area, high temperature melting tabetisol, soaking zone and cooling zone upwards；
The slag sluicing system device is used to detach rare earth slag charge and iron product that rotary hearth furnace processing obtains later；
The roaster includes mixing chamber, baking cavity, combustion chamber and flue gas processing device；
The mixing chamber top is provided with mine feed(raw material)inlet, for after handling rotary hearth furnace and after the separation of slag sluicing system device
Rare earth slag charge be placed in mixing chamber, vitriolic acid flux instrument is provided with beside mine feed(raw material)inlet, is set on vitriolic acid flux instrument top
It is equipped with sulfuric acid Storage Box；Mixing chamber entirety top is cylinder, and lower part is in inverted round table shape, and inverted round table shape bottom surface is open simultaneously
It communicates, is provided in mixing chamber inner cylinder bottom end identical with cylindrical inside radius more with the mixing chamber outlet being vertically arranged
A stirring blade, the multiple stirring blade are each attached on the agitating shaft of vertical center setting, and agitating shaft top exists with setting
The motor of mixing chamber outer tip end is connected, and upper stirrer gear and lower stirrer gear are both provided on the multiple stirring blade；It is described
Mixing chamber outlet is connected with baking cavity entrance；
The baking cavity is in integrally that cuboid is arranged, and combustion chamber is integrally enclosed in outside the baking cavity, is pushed up on the left of baking cavity
End is provided with baking cavity entrance, and the first inclined plate is provided with below entrance, and first inclined plate and baking cavity are affixed with left side wall, by
Left side is arranged and is not contacted with right side wall obliquely to the right, the second inclined plate is provided with below the first inclined plate, described second tiltedly
Plate and baking cavity right side wall are affixed, are arranged obliquely to the left by right side and are not contacted with left side wall, are set below the second inclined plate
Be equipped with third inclined plate, the third inclined plate and baking cavity left side wall are affixed, by left side to the right obliquely setting and not with right side
Wall is contacted but is contacted with baking cavity bottom, and roasted ore outlet is vertically provided in the right vertical of the third inclined plate；It is roasting
Intracavitary upper right quarter is provided with the first turbine, the first inclined plate leftmost side lower part is provided with the second turbine, in the second inclined plate rightmost side
Lower part is provided with third turbine, and baking cavity right side wall lower end is provided with high temperature nitrogen entrance；It is arranged on the right side of baking cavity entrance
There are exhanst gas outlet, the baking cavity entrance, roasted ore outlet, high temperature nitrogen entrance and exhanst gas outlet to be extended through from baking cavity
Outside combustion chamber；
Flue gas in baking cavity is transmitted in flue gas processing device by the exhanst gas outlet by flue gas dispatch tube, at the flue gas
It includes cyclone dust collectors to manage device successively, and acid mist scrubbing tower, cooling settling tank, flue gas liquefaction tower, cyclone separator and foam are inhaled
Receive tower, the gas discharge outlet of gas after foam absorbing tower top end is equipped with for emission treatment；
The pond of leaching is used to carry out leaching process to the Rare Earth Mine after roasting.
2. Rare Earth Mine processing unit according to claim 1, which is characterized in that the upper stirrer gear is uniformly arranged on stirring
The top of blade, the lower stirrer gear are arranged in stirring blade lower part close to the position of root of blade.
3. Rare Earth Mine processing unit according to claim 1, which is characterized in that under the length of the upper stirrer gear is described
Stir tine length 2~3 times.
4. Rare Earth Mine processing unit according to claim 1, which is characterized in that first turbine and third turbine rotation
Direction is identical, and second turbine rotation direction is opposite with the first turbine and third turbine.
5. Rare Earth Mine processing unit according to claim 1, which is characterized in that first turbine and third turbine pass through
Rotation blows gas to baking cavity left side, and second turbine is blown gas to baking cavity right side by rotation.
6. Rare Earth Mine processing unit according to claim 1, which is characterized in that each stirring blade is provided on 3~6
Stirrer gear, each stirring blade are provided with 1~2 lower stirrer gear.
7. according to claim 1-6 any one of them Rare Earth Mine processing units, which is characterized in that in the cyclone separator and
It is also equipped with air pump on pipeline between the foam absorbing tower, the pressure for increasing transmission gas.
8. according to claim 1-6 any one of them Rare Earth Mine processing units, which is characterized in that used outside the combustion chamber
Refratory insulating brick is built into.
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| CN201710498887.5A CN107254591B (en) | 2017-06-27 | 2017-06-27 | A kind of Rare Earth Mine processing unit |
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| CN201710498887.5A CN107254591B (en) | 2017-06-27 | 2017-06-27 | A kind of Rare Earth Mine processing unit |
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| CN107254591B true CN107254591B (en) | 2018-09-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110699545B (en) * | 2019-11-08 | 2021-07-27 | 杨腾跃 | Rare earth dissolving equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| UA72240C2 (en) * | 1999-12-14 | 2005-02-15 | A method for the extraction of metals from copper sulphide and/or copper iron sulphide ores | |
| CN102094116A (en) * | 2011-02-21 | 2011-06-15 | 西安西骏新材料有限公司 | Device and method for decomposing rare earth ore through sulfuric acid low-temperature dynamic roasting |
| CN106440785A (en) * | 2016-10-28 | 2017-02-22 | 江苏省冶金设计院有限公司 | Drying-free direct reduction rotary hearth furnace |
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2017
- 2017-06-27 CN CN201710498887.5A patent/CN107254591B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| UA72240C2 (en) * | 1999-12-14 | 2005-02-15 | A method for the extraction of metals from copper sulphide and/or copper iron sulphide ores | |
| CN102094116A (en) * | 2011-02-21 | 2011-06-15 | 西安西骏新材料有限公司 | Device and method for decomposing rare earth ore through sulfuric acid low-temperature dynamic roasting |
| CN106440785A (en) * | 2016-10-28 | 2017-02-22 | 江苏省冶金设计院有限公司 | Drying-free direct reduction rotary hearth furnace |
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