CN104334989B - The method carrying out ore dressing for former brown coal moist to ore deposit - Google Patents
The method carrying out ore dressing for former brown coal moist to ore deposit Download PDFInfo
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- CN104334989B CN104334989B CN201380026540.0A CN201380026540A CN104334989B CN 104334989 B CN104334989 B CN 104334989B CN 201380026540 A CN201380026540 A CN 201380026540A CN 104334989 B CN104334989 B CN 104334989B
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- Prior art keywords
- brown coal
- former
- dry
- fluidized bed
- bed dryer
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B1/00—Preliminary treatment of solid materials or objects to facilitate drying, e.g. mixing or backmixing the materials to be dried with predominantly dry solids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2201/00—Pretreatment of solid fuel
- F23K2201/20—Drying
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
- F26B3/08—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
- F26B3/084—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed with heat exchange taking place in the fluidised bed, e.g. combined direct and indirect heat exchange
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The present invention relates to a kind of carry out ore dressing, method in particular for the heat utilization in station boiler for former brown coal moist to ore deposit.First by former brown coal precrushing and then pulverized at least one milling device (2) and flow to follow-up being dried.Described being dried is implemented in the case of the fluidized bed dryer (3) utilizing at least one to be heated indirectly in fluosolids.A part of branch of the former brown coal that will extract from described fluidized bed dryer (3), and mixed described former brown coal before described being dried, that thus improves brown coal can be fluidity.
Description
Technical field
The present invention relates to a kind of carry out ore dressing for former brown coal moist to ore deposit, in particular for the heat utilization in station boiler
Method, wherein, first by former brown coal precrushing and then it pulverized at least one milling device and flow to
Follow-up is dried, and wherein said being dried is implemented in fluid bed at the fluidized bed dryer utilizing at least one to be heated indirectly,
Described fluidized bed dryer steam runs as fluidizing agent.
Background technology
A kind of method for aqueous brown coal being dried in fluosolids such as from DE 20 01 723 C2
Know.
The fluid-bed drying described there proposes, and by conveying worm, feed coal is flowed to fluid bed drying
Device.
Should be suitable for being dried bulk material, the size of described bulk material from the known in the literature method mentioned before
In the scope of such as 0.3cm to 10cm.To this end, the material that need to be dried, such as brown coal become finer and close material in eddy current
Such as quartz sand.The method requires: removed together with a part for granular fluidizable material by the solid material being dried, and
Solid material and fluidizable material are separated from one another, thus are backed in fluid bed by isolated fluidizable material.The method is
Complicated and actually be not easy implement.
For drying brown coal, in particular for applying the another kind of method in station boiler such as from DE 196 20
In 047 A1 known.The method is only run as fluidizing agent as solid and with steam with brown coal.Need to flow to be dried
The brown coal of device are milled by opposite fine to fluidize in fluid bed, mean diameter d of the about 1mm that such as mills50。
According to the character of brown coal, such fluid bed drying process can be relatively stable and without reason in fixing fluosolids
Barrier ground is carried out.
As this explanation in DE 29 01 723 C2, this is substantially dependent on solid at fluid bed drying
In device can be fluidity.Extremely complex in the fluid machinery process within fixing fluosolids and only can emulate limitedly.?
In the pilot plant run by the applicant, produce the interference of hybrid dynamics every now and then according to the quality stream that need to introduce.Because
Such interference, the deposition of former brown coal is preferably formed on the heat exchanger of fluidized bed dryer.Heat transfer is thus made to be deteriorated, dry
The power of dry device significantly reduces, and fluosolids caves in worst case.
Confirm with the test of fluidized bed dryer under different handling capacities, former brown coal can fluidity not only with fluidisation
The load of machinery systems of bed dryer is correlated with, and relevant to the type of former brown coal and composition.
Summary of the invention
Therefore the present invention based on purpose be to provide a kind of fluid bed drying for utilizing at least one to be heated indirectly
The method that device former brown coal moist to ore deposit carry out ore dressing, even if described method is in high handling capacity with at different types of raw material
Also ensure that in the case of coal that the most stable and glitch-free fluid bed runs.
Ore dressing is carried out, in particular for station boiler by a kind of for former brown coal moist to ore deposit based on the purpose of the present invention
In the method for heat utilization be achieved, wherein, first by former brown coal precrushing and then by it at least one dress of milling
Put middle pulverizing and flow to follow-up being dried, wherein, being dried at the fluidized bed dryer utilizing at least one to be heated indirectly
In the case of in fluosolids implement, described fluidized bed dryer steam runs as fluidizing agent, wherein, by former brown coal
As mean diameter d50Discrete material for maximum 2mm is thrown in fluosolids, and the driest from fluidized bed dryer downstream
Brown coal in branch out subflow and by this subflow mix be dried before former brown coal.
Particle size distribution such as can be via affecting turning of one or more mills being connected to fluidized bed dryer upstream
Speed guarantees.Such as apply impact mill as mill, described impact mill obtains other according to rotating speed and mills
Precision.Particle size distribution is checked by screening and can every day or batch provide sampling for this.Sample is at laboratory
In by screening grade monitor.Alternatively, particle size distribution can also be measured via at line method in terms of volume.
In order to the stability of fluosolids the most important thing is, excessive grain part (> 2mm) will not be excessive, otherwise this can damage stream
Change the stability of layer.
Particle size distribution alternatively can also be guaranteed by following manner, and sieve classification is at dry brown coal of milling
Downstream, wherein, excessive grain part is sized and stands to mill again.
The present invention based on knowledge be: the moist former brown coal in ore deposit have different adhesiveness relatively from its place of production, this glue
Characteristic and coal fluidity can be had either large or small impact.
It is known that the natural product that former brown coal obtain as digging is in terms of water content, carbon content and mineralogical composition
Different according to the place of production.The specific performance of former brown coal must be considered as given when application.
Applicant experimentally finds, former brown coal can be fluidity closely related with its flowable and former brown
The flowable of coal can produce the impact in front by mixing the dry brown coal of identical coal class unexpectedly.
Therefore it is proposed, according to the invention, that be that the former brown coal that need to be dried add the identical of dry brown coal form before the drying process
Coal class.
The stability of the beneficiation method according to the present invention, especially in the stability of the fluosolids within fluidized bed dryer
Can be improved by following manner unexpectedly: part loopy moving in process of the brown coal being dried, thus
Make it difficult in this way or the former brown coal of energy fluidizing also are not able to do at fluid bed while handling capacity is relatively high
Dry device is applied and is dried.
Fluosolids can be fluidity problem also relevant to the load of machinery systems of fluidized bed dryer.The interference of fluosolids is especially
Can occur in the case of the high load capacity of fluidized bed dryer.
Preferably, the mixture of the dry brown coal of former brown coal and recirculation is in the method according to the invention via impeller gate
Enter in the fluidized bed dryer being under slight overpressure, introduce on fluosolids and be distributed on fluosolids.
Particularly preferably proposing, the dry brown coal share mixed to former brown coal accounts for 10 mass % and 30 matter of whole loose material
Between amount %, between preferably 10 mass % and 20 mass %.
Propose aptly: regulate the share of the dry brown coal of recirculation according to the amount of the former brown coal flowing to fluosolids.Adjust
Joint can be arranged such: sets the quantity ratio of the determination of the most former brown coal of dry brown coal, and correspondingly measures dry brown coal.According to institute
Set machine utilization, the dry brown coal amount of recirculation can in the case of proportions constant Auto-matching.
In the sense that the application, regulation is interpreted as the regulation of automatization, is provided with corresponding process for this regulation
Control technology.
Former brown coal can have until the water content/moisture content of fluctuation of 65 mass %.Take out from fluidized bed dryer
The water content of the dry brown coal taken passes through fluosolids temperature or by solving in moisture absorption scope in the case of system pressure is constant
Inhale isothermal change curve to determine.From fluidized bed dryer, the dry brown coal of extraction can have 0.4mm to 0.8mm, excellent
Select mean diameter d of 0.1mm to 0.4mm, if desired 0.1mm to 0.2mm50.The moisture content of dry brown coal can be in 10 mass %
And between 15 mass %, the most such as between 15 mass % and 18 mass %.Overvoltage within fluidized bed dryer can be straight
To 10bar.The moisture content of dry brown coal can also be between 8 mass % and 20 mass %, preferably in 10 mass % and 16 matter
Between amount %.
The most like that, fluidized bed dryer is preferably heated indirectly as adding thermal medium with steam.Dry
The part of dry device steam or alternatively external steam from the power plant process coupled may be used for fluid bed or at stream
The fluidisation of the change former brown coal within bed dryer.
The dry brown coal being branched can introduce fluid bed with former brown coal in the case of utilizing at least one mixing arrangement
In internal mix before exsiccator.Such mixing is not or not the most all required, but it significantly improves finely
The adhesion on the granule of the moist former brown coal used of the dry brown coal granule.
For example, it is possible to cool down and be subjected to mill again to dry brown coal in fluidized bed dryer downstream, wherein, exist
The downstream milled again is by the subflow branch on dry brown coal.
The most also it is possible that directly will need the dry brown coal branch of recirculation in the downstream of fluidized bed dryer, but more
Advantageously cool down and mill again, thus such as will have particle mean size d of 0mm to 1mm50Dry brown coal be added to former brown coal.
Particle size distribution can be determined by sieve classification equally in terms of volume, thus can in the case of particle size distribution has deviation
To mill the most again.
The dry brown coal of recirculation can be milled between level or in the downstream of a upper level of milling mixes former brown coal at two.
The most also it is possible that the dry brown coal of recirculation were added to former brown coal before milling for the first time.
In this case, milled together with dry brown coal by former brown coal and ensured internal mix, thus possible
Individually mixing arrangement is unnecessary.But in the sense that relative efficiency or energy-conservation method controls it is essential that
As few as possible dry brown coal are introduced circulation and the path of that need recirculation or that meeting companion is carried secretly dry brown coal is kept as
The shortest.The most also the angle of blast protection protection it is considered as at this.For reasons of the latter suitable and it is of importance that need to follow again
The dry brown coal of ring introduce in former brown coal in the downstream of the former brown coal of fine ground, and such as by static or mix dress dynamically
Put in the conveying of fluidized bed dryer, implementing the mixing with former brown coal.Mixing also such as is able to via traditional transporter
Implement.
Desirably, the share of dry brown coal and the adhesion property of former brown coal and/or the fluidized bed dryer of former brown coal it are mixed into
Load condition change relatively.As discussed further below, it has been discovered that the adhesion property of former brown coal and flowing
Performance largely depends on the compressibility of former brown coal and then depends on former brown coal discrete material density under compression.
Aptly, it is arranged on the allotter chute of rotation on fluid bed by least one, preferably according to about stream
Former brown coal are poured in fluosolids by the distribution preset of the cross section changing bed dryer.
Accompanying drawing explanation
The present invention is illustrated below with reference to appended accompanying drawing.
In accompanying drawing:
Fig. 1 illustrates the schematic diagram of the Method And Principle of the beneficiation method according to the present invention；
Fig. 2 illustrates chart, has the discrete material robustness of material of different flowable with solid shown in this chart
Change the dependency of stress.
Detailed description of the invention
With reference first to the Method And Principle shown in Fig. 1, its diagram illustrates the flow chart of fluidized bed dryer, and described fluid bed is done
Dry device such as may be coupled on boiler of power plant for combusting brown coal.
From brown coal strip mining equipment, such as, the former brown coal with the precrushing of the particle mean size of 0mm to 80mm are drawn
Enter former brown coal coal bunker 1.From former brown coal coal bunker 1 out, for fine ground by former brown coal at two mills set gradually
In be ground to the particle mean size (d of such as 0mm to 2mm50).Then in the case of mixing with dry brown coal, as will be explained further below
As, former brown coal are introduced fluidized bed dryer 3.Between fluidized bed dryer 3 is such as via corresponding internal heat exchanger
Ground connection is heated by steam.Steam feeding for loading to heat exchanger is provided with reference 4 in method sketch (Fig. 1).
Fluidized bed dryer 3 is crossed pressure run slight in known manner, wherein, former brown coal via unshowned impeller gate with
And be incorporated on fluid bed via the allotter chute in the upper part being arranged on fluidized bed dryer 3.From fluid bed drying
The steam 5 of device 3 extraction is fed to other different application in electronic filter after dedusting.Described steam such as can be arranged
Go out in air.Can also be alternatively by described moisture condensation, wherein it is possible to by the such as coupling of the low-temperature heat quantity from moisture condensation
The boiler feedwater closing power plant's process is hankered in advance.Additionally can alternatively vapour pressure be contractd and in order to heat and flow to stream
Change bed dryer 3.Energy from steam can also be coupled in ORC process (organic Rankine bottoming cycle).
The subflow 70 of steam 5 is under any circumstance fed to fluidized bed dryer 3 as fluidizing agent.Do from fluid bed
In dry device 3, the dry brown coal 8 of extraction are first cooled in cooler 9, then mill in mill 10 again and are fed to
Dry brown coal storehouse 11.The possible position extracting dry brown coal from the brown coal stream being provided for heat utilization identifies with E1 to E4, its
In, E1 mark is in fluidized bed dryer 3 downstream and in the extraction position of cooler 9 upstream, and E2 mark is at cooler 9
Downstream and in the extraction position of mill 10 upstream, E3 mark in mill 10 downstream and in upstream, dry brown coal storehouse 11
Extract position.Last E4 mark is the extraction position in downstream, dry brown coal storehouse 11.
Preferably, at E4, extract the subflow needing recirculation of dry brown coal, this is because owing to being arranged on dry brown coal storehouse 11
In storage and guarantee the more preferable accountability of the subflow of recirculation.
Dry brown coal storehouse 11 can be provided with marker impeller in discharge side, and described marker impeller can run with variable rotating speed.
Control to measure dry brown coal amount via the rotating speed of marker impeller such that it is able to the cohesion of former brown coal relatively and/or with
The load of machinery systems of fluidized bed dryer 3 or load condition are set between the dry brown coal amount of recirculation and former brown coal amount relatively
Quantity ratio.Dry brown coal storehouse 11 can have two single dry brown coal draw-out devices, and one of them dry brown coal draw-out device sets
It is set to remix for dry brown coal recirculation or dry brown coal, and another dry brown coal draw-out device is provided for extracting conduct
The dry brown coal of the available product of drying process.Use two single draw-out devices especially to have the advantage of control technology, make
Obtain follow-up transportation route also to be able to for being filled with dry brown coal before activation by fluidized bed dryer 3.At fluidized bed dryer 3
It is necessary that first set up fluosolids, because soft coal is due to it with dry brown coal 8 before introducing former brown coal for the first time when starting running
Cohesive characteristic can not fluidize.
Another advantage being arranged so as to is, in the case of soft coal conveying may shut down, dry brown coal recirculation can
Compensate the dust in fluosolids to discharge, and all control loops of fluidized bed dryer and fluosolids can continue to normally transport
OK.
The station location marker of R1 to R4 is for needing the possible recirculation position of the dry brown coal of recirculation, wherein, recirculation position
Putting R1 and be set directly at soft coal coal bunker 1 downstream, recirculation position R2 is arranged between first and second mill, recirculation position
R3 is arranged on the second mill downstream and in fluidized bed dryer 3 upstream.Recirculation position R4 is set directly at fluid bed drying
Device 3 upstream.
The applicant it was unexpectedly observed that different soft coal flowable with they in fluid bed can fluidity direct phase
Close.By being mixed into by dry brown coal, the former brown coal being difficult to fluidize can significantly improve the former brown coal need to being incorporated in drying process
Flowable.
In order to prove this dependency, the applicant is to the different former brown coal from different surface mining equipment and divides
The dry brown coal not obtained from these soft coals are studied in terms of its mobility.Hereafter in order to simple and by different coal samples
Originally it is designated sample 1 to 5, and the dry brown coal obtained the most respectively are designated TBK1 to TBK5 below, to them respectively
Standing flowable research, wherein, flowable is tried to achieve as the ratio of solidification internal stress relative compressive strength.Flowable by
Following formula draws:
ffc=σ1: σc, wherein ffcRepresent flowable, σ1Represent solidification internal stress and σcRepresent comprcssive strength.Such
Flowable both can also can determine by commercially available ring shear apparatus by known uniaxial compressive strength test.Such ring
Cut instrument such as to buy from Dr.Dietmat Schulze Schuettgutmesstechnik company (ring shear apparatus ST-XS).
Various other type of ring shear apparatus can be used.
The shouldering mobility and can classify as follows at this of discrete material:
Discrete material intensity σcSolidification internal stress σ from the region for having different flowables1Dependency such as exist
Shown in Fig. 2.
The sample studied by the applicant grinds at a temperature of about 19 DEG C under the relative air humidity of about 30%
Study carefully.For the measurement result of flowable shown in following form 1, wherein σcRepresent discrete material intensity or loose material
The comprcssive strength of material, with stress σ1After compression discrete material, ffcRepresent σ1With σcRatio, ρbWith kg/cm3Represent loose material
Material density,The numerical value at the internal friction angle of expression discrete material in passive flow,Be denoted as near linear and
The angle of climb of linearizing critical localisation (Fliessort), andRepresent the internal friction angle in passive flow.
Form 1:
Obtain for former brown coal sample 1 to 5: the flowable ff in form 1cIt is in for observed solidification internal stress
1.8 to 2.4.Therefore, sample can classify as in the case of not affected by time solidification and adhere to adhere very much.In sample 2
For worst flowable, best flowable obtains for sample 1, discrete material intensity σ of relative sample 1c, sample
Originally 2 have 1/3 bigger intensity.
As for dry brown coal, sample 6 to 10, the flowable of dry brown coal is substantially more favourable than former brown coal.
Former brown coal sample 2 shows worst mobile performance.Former brown coal sample 2 be mixed into now weight quota be 5%,
10%, the dry brown coal TBK2 (from the dry brown coal of sample 2) of the different shares of 15% and 20%.The most correspondingly to mixture
Flowable is studied, and measurement result illustrates in table 2.
Form 2:
Discrete material density had both determined under unpressed loose condition (of surface) that about 4kPa was (in form 1 the most after solidification
Value).The form 3 illustrated below was both remembered also for sample TBK1 to TBK5 for sample 1 to 5 with being also directed to different mixtures
Record record in the uncompressed state and discrete material density under sample solid state.
Form 3:
Sample 2 has the lowest discrete material density.This is consistent with the worst flowable of this sample, as its
As form 1 is given.If discrete material has disadvantageous flowable, then individual particle is motionless in loose material,
Therefore the cavity and the loose thickness that stay are low.Therefore, sample is compressible, thus discrete material density is relevant to load.?
Big compressibility equally determines in sample 2.
Dry brown coal are the most significantly different in terms of discrete material density.But not can determine that relevant between former brown coal to dry brown coal
Property, the low discrete material density of former brown coal is also not necessarily mean that the low discrete material density of dry brown coal.Dry brown coal are solid
Change the compressibility in the observed region of stress the least until can measure.
Along with the increase of the share of dry brown coal, unpressed discrete material density and the pine under the solidification internal stress of about 4kPa
Scattered density of material also increases.This can description below being mixed into the more preferable flowable after dry brown coal: advantageous flows
Dynamic property is capable of having encapsulating more closely of relatively low cavity rate and then higher loose thickness.
Therefore, it is possible to determine, dry brown coal are such as mixed into sample 2 advantageously affects the flowable of mixture.
Reference numerals list
1 former brown coal coal bunker
2 mills
3 fluidized bed dryers
4 steam feedings
5 steam
6 electronic filters
The subflow of 7 steam
8 dry brown coal
9 coolers
10 mills
11 dry brown coal storehouses
E1 to E4 is for the extraction position of dry brown coal
R1 to R4 is for the recirculation position of dry brown coal
Claims (10)
1. the method carrying out ore dressing for former brown coal moist to ore deposit, wherein, first by former brown coal precrushing and then exists
Being pulverized at least one milling device and flow to follow-up being dried, described being dried is utilizing at least one indirectly to be added
Implementing in fluosolids in the case of the fluidized bed dryer of heat, described fluidized bed dryer steam is transported as fluidizing agent
OK, wherein, using former brown coal as having mean diameter d50Discrete material for maximum 2mm is thrown in fluosolids, and from institute
That states before branching out subflow and be dried described in this subflow being incorporated in the brown coal being dried in fluidized bed dryer downstream is former
Brown coal, wherein, regulate the share of the dry brown coal of recirculation, and are mixed into former brown according to the amount of the former brown coal flowing to fluosolids
The discrete material density under compression of the share of the dry brown coal of the recirculation in coal and described former brown coal and/or adhesiveness
Can change relatively.
2. the method for claim 1, it is characterised in that the share of the dry brown coal of the recirculation being mixed into former brown coal accounts for whole
Between 10 mass % and 30 mass % of individual loose material.
3. method as claimed in claim 2, it is characterised in that the share of the dry brown coal of the recirculation being mixed into former brown coal accounts for whole
Between 10 mass % and 20 mass % of individual loose material.
4. the method as described in one of claims 1 to 3, it is characterised in that the dry brown coal being branched are utilizing at least one mixed
Closely mixed with former brown coal before introducing described fluidized bed dryer in the case of locking device.
5. the method as described in one of claims 1 to 3, it is characterised in that dry brown coal are entered in the downstream of fluidized bed dryer
Row cooling and be subjected to mill again, and need the subflow of dry brown coal of recirculation in the described downstream branch milled again.
6. the method as described in one of claims 1 to 3, it is characterised in that dry brown coal are milled between level or upper at two
The downstream of one level of milling is mixed in former brown coal.
7. the method as described in one of claims 1 to 3, it is characterised in that former brown coal and being blended in of dry brown coal utilize at least
Carry out in the conveying of described fluidized bed dryer at discrete material in the case of one static mixing arrangement.
8. the method as described in one of claims 1 to 3, it is characterised in that the rotation being arranged on fluid bed by least one
Former brown coal are poured in fluosolids by the allotter chute turned.
9. method as claimed in claim 8, it is characterised in that presetting according to the cross section about described fluidized bed dryer
Distribution former brown coal are poured in fluosolids.
10. the method for claim 1, it is characterised in that described method heat utilization in station boiler.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012010078.7 | 2012-05-23 | ||
| DE102012010078A DE102012010078A1 (en) | 2012-05-23 | 2012-05-23 | Process for the treatment of gruel wet lignite |
| PCT/EP2013/060437 WO2013174828A1 (en) | 2012-05-23 | 2013-05-22 | Method for processing pit-moist raw brown coal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104334989A CN104334989A (en) | 2015-02-04 |
| CN104334989B true CN104334989B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201380026540.0A Expired - Fee Related CN104334989B (en) | 2012-05-23 | 2013-05-22 | The method carrying out ore dressing for former brown coal moist to ore deposit |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP2852799B1 (en) |
| CN (1) | CN104334989B (en) |
| AU (1) | AU2013265332B2 (en) |
| CA (1) | CA2872454C (en) |
| DE (1) | DE102012010078A1 (en) |
| WO (1) | WO2013174828A1 (en) |
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| CN103880261B (en) * | 2014-03-18 | 2015-11-18 | 嘉兴绿方舟环保技术有限公司 | A kind of circulating fluidized bed air drying system |
| CN105157353A (en) * | 2015-03-06 | 2015-12-16 | 中昊晨光化工研究院有限公司 | PTFE suspension resin drying system and method |
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- 2013-05-22 CA CA2872454A patent/CA2872454C/en not_active Expired - Fee Related
- 2013-05-22 EP EP13724262.4A patent/EP2852799B1/en not_active Not-in-force
- 2013-05-22 WO PCT/EP2013/060437 patent/WO2013174828A1/en active Application Filing
- 2013-05-22 CN CN201380026540.0A patent/CN104334989B/en not_active Expired - Fee Related
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2013174828A1 (en) | 2013-11-28 |
| AU2013265332A1 (en) | 2014-12-04 |
| CA2872454C (en) | 2019-10-08 |
| CN104334989A (en) | 2015-02-04 |
| EP2852799B1 (en) | 2018-11-21 |
| DE102012010078A1 (en) | 2013-11-28 |
| EP2852799A1 (en) | 2015-04-01 |
| AU2013265332B2 (en) | 2017-06-29 |
| CA2872454A1 (en) | 2013-11-28 |
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