CN1346297A - Controlled production and recovery of fine-coal agglomerates - Google Patents
Controlled production and recovery of fine-coal agglomerates Download PDFInfo
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- CN1346297A CN1346297A CN98812465A CN98812465A CN1346297A CN 1346297 A CN1346297 A CN 1346297A CN 98812465 A CN98812465 A CN 98812465A CN 98812465 A CN98812465 A CN 98812465A CN 1346297 A CN1346297 A CN 1346297A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/2405—Feed mechanisms for settling tanks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/30—Control equipment
- B01D21/302—Active control mechanisms with external energy, e.g. with solenoid valve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/30—Control equipment
- B01D21/32—Density control of clear liquid or sediment, e.g. optical control ; Control of physical properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/30—Control equipment
- B01D21/34—Controlling the feed distribution; Controlling the liquid level ; Control of process parameters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
- B01D21/262—Separation of sediment aided by centrifugal force or centripetal force by using a centrifuge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
- B01D21/267—Separation of sediment aided by centrifugal force or centripetal force by using a cyclone
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Abstract
An oil agglomeration process for the separation and recovery of fine coal agglomerates from a slurry, the process including: a source of slurry from which fine coal is to be recovered; sensing means in direct or indirect communication with said slurry for detecting predetermined parameters relating to the condition of said slurry; means in communication with the sensing means responsive to an instantaneous measured value or values of said condition parameters; wherein said means responsive to said condition parameters controls/regulates the delivery of an agglomerating agent into the slurry at a rate or in a quantity determined by at least one of said condition parameters so as to minimise use of the agglomerating agent but maximise fine coal recovery for a predetermined quantity of the agent thereby obviating the need for recovery of said agent.
Description
The present invention relates to a kind of method that the fine coal condensation product reclaims that is used for, particularly, the present invention relates to a kind of method of utilizing a Controlling System to reclaim these fine coal condensation products, wherein Controlling System comprises the device that is used for monitoring coal slurry/water slurry/ore slurry fine coal concentration, be beneficial to control the conveying of (for example being used for reclaiming the oil base milk sap of technology) of optimum quantity flocculation agent, thereby prevent the excessive use of flocculation agent, and eliminate because excessive use and needs that flocculation agent is reclaimed.
Most of coal washery all will produce the wake flow that contains fine coal in its operating process.Therefore, just wish to reclaim these fine coal, but owing to contain a large amount of useless mineral substance in the wake flow, so the work of recovery fine coal is very difficult.Most of coal washery thinks that this part fine coal of recovery is very uneconomical, and it is discharged in the tailing pond.The coal of being thrown away accounts for the 5-30% of the coal of exploiting out, has so just produced very big waste.
The condensation product that reclaims coal from the wake flow of coal separating plant has been technique known.The oil coacervation can be divided into two stages.Fs comprises coal slurry and oil is mixed, so that the conglomeration selectively of coal grain makes mineral particle scatter simultaneously.In subordinate phase, the condensation product of coal is separated from mineral substance by screening, filtration or flotation.
The oil coacervation is used to coal washing for the first time in nineteen twenty-one.But, therefore be not applied to industry because its oil consumption is big.In the 1950's, begin again this Study on Technology.Method based on the oil cohesion resembles Convertol, and Olifloc and spherical coacervation are studied out.But also design the specific equipment that is used for this method.A kind of method of oil cohesion is developed in Poland, and it is called as " mineral have selection coacervation ".According to the research of being done, we can say that oily coacervation is subjected to the influence of following parameter: the type and the quantity of the oil of interpolation (crosslinked fluid), mineral content in the mud, the distribution situation of granular size in the mud, the pH value of medium, solid exists in the mud, the mixing time of mud/crosslinked fluid and mixture strength.
Although there have been the methods of many oil cohesions to be applied to the recovery of fine coal tailing, verified up to now these methods do not have economy, and because the waste that oily excessive use causes in removal process makes it can not be widely used in industry.Excessive part or be wasted perhaps reclaims by expensive recovery method, so just makes oily coacervation not have economy on the whole.The economical efficiency of recovery method is substantially under the prerequisite of guaranteeing not have waste or excessive use, by minimum and effectively represent with oil mass.The oil that the common use cost of known method is higher, diesel oil for example, but fail to control effectively the oil mass of using in the treating processes.In these methods, required oil mass is represented by solid concentration in coal slurry/water slurry/ore slurry usually.Use the oily coacervation of light oil just to be used, but this method makes the oil recovery cost that utilizes again very high, thereby increased the total cost of this technology in the thirties in 20th century.
The author is Zofia Blaschke, and exercise question is in the article of " the selective flotation of oily coacervation and coal slurry ", has described a pilot plant that is used for oily coacervation.This piece article discloses the following fact: 1978, when the investigation of making pilot plant and prove that selectively condensing method possesses skills after the feasibility, Australian Broken HillProprietary company limited has built up one in John Darling colliery and has had plant-scale factory.The feed capacity of this factory per hour is 5.5 tons a drying solid.Its technical process has proved the simplicity of its design.It is about 40% charging that the factory of semi-commercial can handle average pan feeding ash content.Oil is added into the form by the milk sap that ultrasonic wave was produced.When charging is the oil of 7-8% when processed with adding speed, will produce yield rate for containing the agglomerated product of 79% ash content (exsiccant charging), this is equivalent to 60% of charging.Product agglomerated together is easy to handle, and has stored 8 months under the condition of non-oxidation.The ash content of tailing and can form very limpid supematant liquid generally in the scope of 80-85% apace, and stays a stable gray layer in supematant liquid, and in contrast, the sedimentation speed of charging is then very slow.But the device that does not comprise the speed of feed of the milk sap that is used to control oil in this method, wherein speed of feed is to determine by the concentration of measuring coal in coal slurry/slug.
Also described another kind of method in this piece article, and be called as the Aglofloat method, this method is a kind of senior spherical cohesion and method for floating.In the method, raw coal is ground into the particle of 600 μ m and is mixed into mud with recirculated water.Crude oil and diesel oil mix, and form crosslinked oil.Next, coal slurry combines in the high speed shear stirrer with crosslinked oil, and coal and oil form the micelle that size is about 212 μ m in shear mixer.This micelle separates with mineralogical composition and residue in flotation machine, is cleaned in hydroseparator then and is separated with pyrite particle.The micelle of demineralize is transported to the low velocity shear stirrer that adds how crosslinked oil, and micelle is increased to about 850-335 μ m.Residue in flotation and the hydroseparator is removed and thrown away as waste from a factory.This method can be carried out sorting to ash content height, soft coal that sulphur content is high.Ash content is 3.7%, total sulphur content is that No. 6 coals in Illinois of 4.19% are reduced to that ash content is 6.8%, total sulphur content is 3.7% product, and this product has been removed 77% sulfurous iron ore composition, and reclaims combustiblecomponents 89%.
Also disclose another method in this article, this method is called as the spherical coacervation of Bechtel.This condensing method is the recovery that spherical condensing method successfully is applied to coal for the first time.Method shown in Figure 2 is used heptane to make to be difficult for being had machine-made egg-shaped or honey-comb coal briquets agglomerated together in the aqueous slurry of ultra-fine (less than 20 μ m) coal by what water bedewed selectively.Subsequently, add a kind of bituminous cement of oil base, so that condensation product increases to the spheroidal particle that is easier to the 6.4mm to 9.5mm that handles.Hydrophilic inorganic one-tenth ash and pyritic sulphur composition are thrown away, and only stay the waste material of pure no coal.Next, the coal product of conglomerate is by sloughing the crosslinked liquid of heptane with contacting of steam.Vapor removal is used to reclaim heptane, because heptane and steam can form a kind of azeotropic mixture, the boiling point of this azeotropic mixture (79.0C) is lower than the boiling point (being respectively 98 ' C and 100 ' C) of heptane and water respectively.
Do not have those factories of floatation equipment usually super-fine material (size is less than 100 μ m) to be used as the mine tailing processing, thereby cause waste.In some cases, this superfine waste material comprise weight percent greater than 50%, ash content is lower and the coal of suitable sale.We believe: with regard to the output of present Australian coal-mining industry, these coals have constituted annual 8000000 to 1,000 ten thousand tons loss.
Selectable oily coacervation relates to recovery (hydrophobic) Bed for Fine Coal from (hydrophilic) liquid of rich in mineral substances.Up-to-date style method relates to the step that adds oil (being generally emulsified state) in the fine coal grout that stirs.This oil is coated on the surface of each coal grain.When the particle of band oil reservoir in the mud that stirs clashed into mutually, these particles flocked together by the olefiant swing axle of shape (pendular bridge).Then, can coal grain agglomerated together be separated with the rich solution of mineral substance by screening or floatation process.But aforesaid method all is not disclosed in the Controlling System that is used for accurately adjusting flocculation agent dosage in the removal process.
One aspect of the present invention uses accurate control flocculation agent to export the method that reclaims the fine coal condensation product and above-mentioned known method has been made improvement by providing a kind of, thereby prevent excessive use flocculation agent and reclaim flocculation agent, the output that wherein resembles the such flocculation agent of oily emulsion is corresponding with the parameter of coal/water of measuring/mineral chylema.
According to a further aspect in the invention also by using online watch-dog and control loop and special recovered/separated sieve to provide a kind of most economical recovery fine coal condensation product required method and apparatus.
The present invention also provides a kind of coal recovery method of economy, this method uses the laser cutting that resembles the such flocculation agent of low-cost oil and be used to separate the condensation product of coal to sieve, this laser cutting sieve also comprises the probe of the state parameter of the mud that is used to monitor coal/water/mineral substance, thus the add-on of control oil.
The present invention also provides a kind of nuclear supervisory system, is used for the actual content of the slurry mixture coal of definite coal/water/mineral substance; With the quantity Calculation machine that is used for controlling from the required flocculation agent of mixture recovery fine coal.
According to an embodiment, a first sensor is measured solid total amount, one second sensor determination impurity level.In general mud, may there be the solid of 20-30%, 70-80% is a fine coal; In other words, have the solid of 2%-50%, and 5%-60% is a mineral substance in the solid.The method according to this invention can adopt all flocculation agent, and has eliminated the additional step of refiltered oil required in some existing method.In fact, the spending rate of oil has been lowered to the commercial viability that does not need refiltered oil just can realize this method in the method according to the invention.Have the following advantages according to the froth-flotation method that is used for economic recovery fine coal in the relative prior art of selectable oily coacervation of the present invention:
A) can be that the solid of 15-30% uses with weight concentration as the dense mud of underflow of charging, and traditional pneumatic flotation rule to need weight concentration be the solid of 5-10%, therefore significantly reduced the input speed of coal separating plant;
B) owing to do not need foam reagent, therefore eliminated conventional plant and used foam processing, the excessive foaming (overfrothing of water) of water and the problem that magnet loop (magnetitecircuit) run into;
C) fairly simple according to the product dehydrating step in the selectable oily coacervation, and do not need expensive vacuum filtering system;
D) reclaim coal by oily coacervation and be not easy to oxidation, perhaps be not easy to make the surface characteristic of coal to produce other variation;
E) wake flow of factory does not need thickening again before processing;
F) can realize the automatization of whole technology by better simply field control, and only need minimum operator input;
G) method of the present invention can reclaim submicron coal particle very effectively;
H) although the long-term operation of factory need be proofreaied and correct initial observations, the fine coal that is undertaken by oily coacervation reclaims and is not added to the influence of flocculation agent quantity in the thickening material;
I) selectivity of coacervation has reduced the quantity that misplaces fine mineral matter that is collected in the product, thereby reduces the ash oontent of condensation product.
One aspect of the present invention comprises a kind of method that is used for separation of fine coal mine tailing from coal/water/slurry of mineral that coal separating plant or tailing pond are discharged, and this method comprises:
One first container is used to receive and hold the coal/water/mineral substance mud that is transported to described first container from feeding pipe;
One second container, be used to receive and hold comprise oil, water and or the milk sap of surfactant;
One pump is connected with described second container;
Wherein said first and second containers and a stirred vessel link, and this stirred vessel receives from the coal/water/mineral substance mud of first container with from the milk sap of the oil of described second container;
Primary separator and described stirred vessel UNICOM; A vibratory screening apparatus separator and described primary separator and/or high speed shear stirred vessel link;
This method also comprises: the control device that is connected with at least one transmitter in described first container; Described pump and the described second container UNICOM, described control device also with the mud feeding pipe UNICOM of described coal/water/mineral substance, described control device basis comes from described transmitter and represents the described pump of one or more signal control of the state parameter of coal/water/mineral substance mud, thereby adjusts the flow of emulsion from described second container to described stirred vessel.
According to most preferred embodiment of the present invention, control device comprises: a computer information processing machine, it can be according to the signal of the program reception of finishing from described transmitter, wherein transmitter preferably includes the probe that is immersed in described coal/water/mineral substance mud and is used to detect fine coal concentration, pump in described second container of data-driven of the relevant mud state that described handler is determined according to described probe so that the emulsion of predetermined amount from described second container transport in described stirred vessel.
According to an embodiment, the mud in described first container is transported to whipping appts by a pump or an overflow conduit.
Another aspect of the present invention comprises a kind of being used for from the method for coal/water/mineral substance mud separation of fine coal, and this method comprises:
Be used for feeding pipe to first container transport coal/water/mineral substance;
One second container is used to receive and holds the emulsion of oil and comprises the transferpump of the one and second container UNICOM;
A stirred vessel with the described first and second container UNICOMs; Control device comprises at least one and described coal/water/contacted detection probe of mineral substance mud, is used for detecting the parameter of coal/water/mineral substance mud described in described feeding pipe and/or described first container;
An interface that connects described control device and described transferpump; Wherein said control device is being controlled described oil according to the parameter of measuring emulsion arrives in the described stirred vessel by described pump delivery, thereby has saved oil recovery, and described parameter comprises the concentration of fine coal in coal/water in first container/mineral substance mud.
Another aspect of the present invention comprises:
A kind of utilization resembles the oily condensing method of the such flocculation agent of oily emulsion with fine coal separating treatment from coal/water/mineral substance mud, it is characterized in that: this method comprises computed control device, the emulsion that this control device is being controlled described oil is transported to the feed containers that is used to hold described coal/water/mineral substance mud from the oil emulsion container with the speed of determining, thereby prevent excessive in the method use flocculation agent and saved recycling step that wherein the speed of Que Dinging is to be determined by the parameter of the described coal/water that records/mineral substance mud to flocculation agent.
One side more of the present invention comprises: a kind of method that is used for separating and reclaiming the fine coal condensation product from mud, and this method comprises mud, fine coal will be recovered from this mud;
With the proofing unit of the direct or indirect UNICOM of described mud, be used to measure the preset parameter of relevant mud state;
With the device of described proofing unit UNICOM, this device can be reacted to the momentary value of the state parameter that records;
It is characterized in that: the device control/adjustment flocculation agent that described state parameter is reacted is transported in the mud with certain speed or with the quantity of being determined by at least one described state parameter, thereby make the consumption of flocculation agent minimum, and for the flocculation agent of pre-determined quantity, the yield of fine coal is maximum.
A kind of oily condensing method that is used for reclaiming the fine coal condensation product from mud, this method comprises:
Mud, fine coal will be recovered from mud;
Be used to measure the proofing unit of the preset parameter of relevant mud state; At least one Signal Processing Element, these parts are reacted to the parameter that reads and directly or indirectly are connected with proofing unit and control device;
Described signal component is used to control/adjust flocculation agent and is transported in the mud with certain speed or with the quantity of being determined by described state parameter, thereby makes the consumption of flocculation agent minimum, simultaneously for the flocculation agent of some amount, and the yield maximum of fine coal.
One control device is used for adjusting coal slurry speed of feed and solids concn a kind of from the condensing method of described mud recovery fine coal, and this control device comprises: a central processing unit;
At least one remote sensor is used for measuring the state parameter or the composition of described coal/water/mineral substance mud; Described remote sensor is connected to device on the described central processing unit, and the data transmission that this device is used for described at least one transmitter is recorded is given described central processing unit; Central processing unit is connected to device on the variable-speed pump, adjusts the transfer rate of flocculation agent before variable-speed pump wherein is used in being transported to stirred vessel to coal slurry.
One Controlling System is used for adjusting flocculation agent and is transported to transfer rate in coal/water/mineral substance mud a kind of oily condensing method that reclaims fine coal from described mud;
This Controlling System comprises: a central processing unit;
At least one remote sensor is used for measuring the state parameter or the composition of described coal/water/mineral substance mud; Described remote sensor is connected to device on the described central processing unit, and this device is used for the data transmission of relevant mud state that described at least one transmitter is recorded and gives described central processing unit; Central processing unit is connected to device on the variable-speed pump, variable-speed pump wherein can be according to adjusting the conveying of flocculation agent from the flocculation agent storage vessel from the signal of central processing unit, and the state parameter that central processing unit wherein records according to described at least one transmitter is adjusted the work of pump.
One is used for controlling the parts that flocculation agent is transported to the mud of preparing recovery fine coal, and these parts comprise: the probe that at least one contacts with described mud; A signal processing unit that is connected with described at least one probe, this unit are used to receive and the data of handling from described at least one relevant mud state of popping one's head in;
A programmable (PLC) is with described processing unit UNICOM and receive data from processing unit;
Wherein said PLC is controlling the density and the flow of the mud that is transported to described probe, and described PLC is connected with a pump, and this pump is controlled by the data of received relevant mud and the mud datamation that basis receives;
Wherein said pump is reacted to the input of described PLC, thereby the control flocculation agent is to the conveying of described mud.
Another aspect of the present invention comprises: a Controlling System, be used for adjusting the conveying of emulsion in coal/water/mineral substance mud of oil at the oily condensing method that reclaims fine coal, and this system comprises: a central processing unit;
At least one remote sensor is used to measure the state and/or the composition of described coal/water/mineral substance mud;
The data transmission that the device that connects described remote sensor and described central processing unit, this device are used for described at least one transmitter is recorded is given described central processing unit; The device that connects a central processing unit and a variable-speed pump, described variable-speed pump is according to from the output from the emulsion/storage receptacle of oil of the emulsion of the signal control oil of central processing unit, and the data that central processing unit then records according to described at least one transmitter are adjusted the work of pump.
According to a most preferred embodiment, control device comprises a computer information processing machine and a programmable, these two computers are all arranged by the software that can handle from one first detection probe or a plurality of detection probe and at least one second data of popping one's head in, first detection probe is arranged at the feeding pipe that is used to carry coal/water/mineral substance mud, and detection probe is arranged in the feed containers of described coal/water/mineral substance mud, it is characterized in that: programmable can be adjusted the conveying of oil emulsion by driving transferpump according to the parameter of the described coal/water/slurry of mineral that records, wherein transferpump can be connected with described oil emulsion container, perhaps is provided with away from the oil emulsion container.
The parameter of the coal/water that records/slurry of mineral is being controlled the power (speed) of pump, and measured data comprise the concentration of ash content and fine coal.
A kind of stirred vessel is provided in accordance with a further aspect of the present invention, and this stirred vessel comprises at least one high speed shear agitator; Substantially vertical baffle plate; An air distributor, an inlet and an outlet;
It is characterized in that: described baffle plate produces the eddy current of an optimum level, so that the contact maximum between coal grain and the oil droplet that formed by the particulate oil coating.
The high speed shear agitator preferably has a kind of being beneficial to axially and the geometrical shape of flow combination radially, to realize best the stirring in container, guarantees enough residence time and high speed shear simultaneously, thereby realizes the interaction of coal-oil.Comprise a kind of strainer that is used for separating bulk liquids and mineral substance according to another aspect of the invention, wherein have the hole of 200-50 μ m on the coal, and its perforated area is about 10%-20% from coal.
Referring now to accompanying drawing,, the present invention is made detailed explanation according to the best and non-restrictive example.Accompanying drawing wherein:
Fig. 1 is the layout synoptic diagram of control device, and this control device comprises a plurality of probes that are connected with the signal processing computer and a PLC;
Fig. 2 is the analytic curve figure of solid to the time;
Fig. 3 shows the layout synoptic diagram that selection oil cohesion coal recovery method is arranged of the most preferred embodiment according to the present invention;
The representative data table of Fig. 4 for being produced by pilot plant running shown in Figure 3;
Fig. 5 overall result that oil cohesion coal recovery plant provides of serving as reasons.
The various existing method that is used for the coal recovery has been made description above, comprising the Bechtel method.This method uses hydrophobic in the aqueous slurry of the super fine coal of heptane cohesion (less than 20 μ m) that machine-made egg-shaped or honey-comb coal briquets is arranged selectively.
This system comprises a kind of recovery method, is used for reusing and coal condensation product blended heptane mutually at cohesion process.But this method is not enlightened the injection that we control emulsion, thereby saves the oil recovery operation, guarantees its economic feasibility.Referring now to Fig. 1 this system is described.
With reference to Fig. 1, there is shown the complete layout of a control device, this control device is used for control and reclaims fine coal from mud.
Control device 1 comprises a feed-pipe 2, and this feed-pipe 2 will comprise in slurry transportation to a container 3 of water, fine coal and other mineralogical composition.
In accordance with the embodiments illustrated, container 3 comprises a receiving vessel 4 and an overflow vessel 5.Container 3 comprises a discharging unit for discharging, and this discharging unit for discharging comprises a transfer lime 7 and control valve 8 again, and control valve 8 is used to adjust the conveying of mud to cohesion process.
These parameters and mass rate are calculated the mass rate of producing coal really surely, thereby determine that rightly flocculation agent flows into the flow rate pump in the mud.These probes are connected with signal processing unit 12 based on PC, and signal processing unit 12 receives and handle the data from the relevant mud state parameter of popping one's head in.
The output of the reading of a per second is transmitted to unit 12 (this unit can comprise one 486 chip or high-grade chip more), and the software in the unit 12 is determined the solid data of mud according to this output valve.PLCl3 receives the data of relevant mud, and controls the pump 16 that is driven by variable speed drive motor 17 according to the state parameter of mud, thereby controls the conveying that resembles the such flocculation agent of oily emulsion in the method that reclaims fine coal by cohesion.Flocculation agent can only comprise oil or comprise the mixture of oil, water and additive, to strengthen the degree of scatter of oil in water.
Oil must be able to be evenly distributed in the water, if but in oil, do not add tensio-active agent to increase viscosity, oil just is difficult to be uniformly distributed in the water so.Most of mineral oil that refining technique by oil obtains can use, and generally speaking, its scope is the heavy oil of the bottom from the light oil resemble diesel oil to separation column and the mineral waste oil of handling again.Also can use vegetables oil.The receptor of the energy and probe is sealed in the housing (not shown) that is immersed in the mud.
According to an embodiment, used probe can be the X ray backscattering probe of Cs density probe and 238Pu.Measure solid density probe 11 and comprise a gamma ray source, this gamma ray source can produce and pass the gamma ray that mud arrives receptor, thereby determines the density of mud.Probe 10 utilizes the plutonium source to produce the X ray that enters mud, and receives the backscattering of X ray, to determine the ash content or the mineral content of mud.
Density is passed mud by gamma ray and is determined along its path, and mineral content is to enter mud and detect the backscattering of mud and the intensity of the Fe K housing X ray (Fe k shell X-rays) that excites is determined in mud by producing X ray and making X ray pass a window.In case probe is calibrated, it will be monitored continuously and immediately, and synchronous signal is flowed to the signal processing unit that is used to analyze continuously.
Resulting readings per second value is transmitted to the processing unit 12 that is used to analyze, thereby determines ash oontent.The algorithm of software is determined the requirement of oil or emulsion according to the content of coal.Next, variable speed drive motor 17 is received instruction, allows dosing pump with predetermined speed feeding oil or emulsion.The precision that probe is handled is decided by to measure simultaneously the precision of same mud, i.e. error closure.
In another embodiment, these probes can be installed in a material feeding box or feed chute or the sampling loop.In another embodiment, probe can be mounted in the sampling loop in the wake flow of selectable oily coacervation (SOAP), handles the speed that reclaims with METHOD FOR CONTINUOUS DETERMINATION.
The PLC action system comprises the algorithm through particular design in relevant software, be the ash content of mud with density and mineral content conversion of signals with probe; Ash oontent is converted to the amount of carbonaceous material in the mud; Then, determine the quality and the flow velocity of carbon, determine required mud agent mass rate with the quality and the flow velocity of carbon then, the motor of the variable-speed pump of the flocculation agent of must sening as an envoy to like this is with the signal of appropriate speed running.
With reference to Fig. 2, there is shown the graphic representation of solid and time.Analyze probe the kilogram reading of coal is provided, the kilogram reading of mineral substance and holosteric kilogram reading.The data that occur among the figure are to collect in SOAP factory surpasses 18 hours working hour in May, 1998.The output of probe is inserted by the algorithm of computer, is used for controlling online to coal slurry adding oil or oil/water-in-oil emulsion.The speed of oil pump by frequency-conversion drive apparatus on the successive basis to mud in the content of coal react, thereby (with flocculation agent) accurately joins in the mud to control.All these can only accurately control the content of coal and transmit mutually this information with computer-controlled pump and could realize by on-line continuous.
For safety, probe preferably is installed in the massive steel protection of instrumentation shell, and this protective shell is used as the feed containers 3 of mud.
The calibration of probe 10 and 11 allows operation to carry out automatically.According to appointment equation, can determine solids content and ash oontent with the definite known variables of four needs.Do not consider variable pore volume, be used for determining that the equation of mud solid part weight (W) is as follows:
W＝a*ln(l)+a2*ln+a4*lFe/ls+a5
Wherein: the intensity of l for measuring;
A? be X ray;
N is a neutron number;
S is the X ray of scattering;
Fe is an X ray.
Numerical value a is a constant.
In the method, because there is not neutron probe, therefore need not to determine the value of n.Ash oontent is calculated by following equation in the mud:
C ash content=(bl/ls+b2*IF/Is+b3+ (b4*ln (I)+b5*In))/W
Wherein: numerical value b is a constant, and in the bracket first be responsive of ash content, and interior second of bracket is the correction term to the pore volume effect of the X ray intensity of scattering.
The content of iron is as follows in the coal ash:
C iron=((cl*IFe/ls+c2)+(c3*ln (I)+c4*ln ((/ (w*C ash content)
Wherein the c of small letter is a constant, the responsive item of first parenthesized Xiang Weitie.
Output signal from density and X ray probe is passed through two setting pulse height, and the shaped position of pulse and the interface board of magnification are sent to computer.On two interface boards, have many CRO check points and adjustable potentiometer, be used to guarantee that pulse height and shape are in correct status, and appropriately locate according to energy.In case required operational condition enters online menu, so just can begin on-line analysis by pressing the R key, when R key when being highlighted, bring into operation.Computer can show following message: drawn the numerical value of maximum quantity in predetermined calculation cycle by each peak value, these numerical value are with the readings signify of per second come out (cps).
With reference to Fig. 3, there is shown the complete layout that most preferred embodiment according to the present invention is used to reclaim the method for fine coal condensation product.
This method needs a mud source, and fine coal will be extracted in the mud source.Mud is contained in the thickening material container 30, and container 30 comprises and the mud emission pipeline 31 of pump 32 UNICOMs, and pump 32 is connected with the feed-pipe 33 that ends at feed containers 34 itself.Feed-pipe 33 comprises a under meter (not shown) as described in Figure 1, and coal/water/slurry of mineral is transported in the feed containers 34.Container 34 comprises a delivery pipe or upflow tube 34a, is used for all overflows are delivered to tailing pond 46.Coal-water slurry in the feed containers 34 is transported to high speed shear stirrer 38 by fresh feed pump 35.The feed-pipe 36 that is positioned at trip under the pump 35 is included in pipeline stirrer 37.
This method also comprises emulsion stirrer 40, and this stirrer 40 can hold the mixture of oil, water and surfactant, to form the oil base emulsion.Emulsion 40 also comprises the feed-pipe 41 that ends at pump 42.Pump 42 is connected with transfer lime 43 in its downstream side, thereby forms UNICOM between emulsion stirred vessel 40 and high speed shear stirrer 38.This method also comprises a signal processing computer 50, and this computer 50 directly or indirectly is connected with at least one feed containers 34 with 55 by above-mentioned probe 54, thereby adjusts the flow by the various compositions of this system.PLC computer 50 comprises an interface 57 and 58, thereby when coal/water/slurry of mineral flows with it, allows signal to be connected with densometer with under meter on the feed-pipe 33.So just can make computer metering go out to be transported to the flow velocity of the coal/water/slurry of mineral in the feed containers 34.
Computer 50 comprises interface 52 and 53, and interface 52 and 53 ends at and the contacted probe 54 of coal/water/slurry of mineral and 55.Meter is used for measuring the quantity of fine coal in feed containers 34 coals/water/slurry of mineral.
The state of mud is converted into the signal that can import computer 50, and to adjust the flow of pump 42 outputs by interface 56, wherein computer 50 is being controlled a loop.Like this, just can control, thereby reclaim maximum coals, and not have waste material to be transported to high speed shear stirrer 38 with the emulsion of appropriate amount from the quantity and/or the flow of the emulsion of container 40 outputs.
The probe that is used for this method can have been bought in the shop, thereby but also is not combined in fine coal up to now in the above described manner and reclaims the precedent that the conveying that makes oil emulsion in the technology is controlled.Pump 42 is variable speed drives preferably, thereby can be according to the reading that is received by computer 50 and definite required oil mass of high speed shear stirrer is adjusted its speed.
Coal/water/slurry of mineral and stir in high speed shear stirrer 38 by special agitator 38a from the emulsion of emulsion stirred vessel 40, wherein agitator 38a comprises the baffle plate (not shown).The mixture of coal/water/emulsion can conglomerate, and fine coal agglomerated together is inhaled in the primary separator 39.Computer 50 is assigned instruction by software, thereby when coal/water/slurry of mineral during by continuous feed, starts emulsion pump 42 emulsion of required dosage is transported to high speed shear stirrer 38.The under meter of a standard of use is monitored the flow of coal/water/slurry of mineral, and wherein the under meter of computer 50 electrical connections is arranged near the inlet of feed containers.Preferably the mixture with emulsion/coal/water stirs several minutes.In another embodiment, one second high-speed stirring container (not shown) receives the overflow of high speed shear stirrer 38, but also can be used in the residence time that increases high-speed shearing machine.
Underflow stream from high speed shear stirred vessel 38 enters primary separator 39 under action of gravity, this primary separator 39 can be a settling bath that does not have stirring action, or the settling bath with washing swirler or screw-blade (water washing cyclone or spirals).High speed shear stirrer 38 also comprises an overflow means, and these parts allow the overflow of high speed shear stirrer 38 to import in the vibratory screening apparatus separator 39 of laser cutting.Separator 39 uses with a upflow tube 39a, and upflow tube 39a can import the overflow from primary separator on the draining screen 45 of laser cutting.
Underflow from separator 39 and draining screen 45 is pumped in the (not shown) of wake flow pond by wake flow pump 47, and the low ash coal group of the coal dust of conglomerate or dehydration is directed to product conveyor 48, and the goods with coal separating plant on transfer roller 48 mix.
Emulsion preferably is made up of water and oil, and then adds a small amount of surfactant that is enough to keep emulsion stability.The big I of coal grain from 500 μ m to the sub-micron size.
The dosage of emulsion is very important for the coal that successfully reclaims maximum, and as mentioned above, the dosage of emulsion is very important for the economic benefit of this method.If emulsion can be used effectively, operating cost just can be reduced to minimum so.In addition, can just can work automatically without manual operation by computer-controlled this method.Have only by suitable emulsion dosage and just can make the measured coal of matter group, and the high-recovery on the vibratory screening apparatus also needs the measured coal of matter group.For obtaining proper dosage, the mass flow of delivering to the coal in the factory is known, and this point is very important, therefore just requires online monitoring meter to provide information for computer, thereby starts variable-speed pump 42.
Stirred vessel must have at least one high speed shear agitator and vertical baffle plate, thereby produces maximum eddy current, and makes coal grain and oil droplet form maximum contacting, and wherein oil droplet is formed by the particulate oil coating.This container must have a zone stably, thereby the particle with oil coating is clashed into mutually and the volume of condensation product is increased.This container also should be equipped with an air distributor, to promote condensation product to increase and to form the floating mat (floatingmat) that a coal is rolled into a ball.The floating mat of coal product should be able to make the stirred vessel overflow, and provides situation to the separation sieve that is used to dewater.Stirred vessel also should comprise an outlet, so that underflow and/or less condensation product enter primary separator by this outlet, is used for further processing.
The high speed shear stirrer must have a blade geometric shape, thereby can produce axial flow and the radially combination of flow, thereby in container body, realize good stirring, keep the enough residence time and high speed shear simultaneously, to realize the interaction of coal-oil.
The diameter of Re stirrer and the diameter ratio of container (if being columnar words) should be in 1: 2 to 1: 8 scopes, and power rating (power rating number) is 0.5 to 10.
Stirred vessel should be provided with and be used to guide the device of nucleonic(s)gage (nucleonic gauge) and the inlet tube of coal/water/slurry of mineral and emulsion.These two inlets should be close mutually, and be preferably in to enter before the container and mix.Product from stirrer overflow and primary separator need be through sieving or the strainer dehydration.When coal product be condensed into a bigger group and the mud of floating at mineral/water on the time, mineral grain is still very meticulous, and may be submicron size.For bulk liquids is separated, need to use dusting cover with maximum " perforated area " from coal.This can be realized by the sieve that forms by the special cutting of laser technology.This sieve should have the hole of 200-50 μ m, and its perforated area should be between 20%-10%.For the benefit of separate, these sieves are fixed on the laser cutting sieve of oscillating screen plate device and special assembling, to give whole sieve plate with conduct vibrations.If do not have these special sieves, so just can not realize sufficient dehydration.The efficient of dehydration is decided by to form good big condensation product, and wherein condensation product flies on the mud surface.Obstruction in the slit of sieve is not any problem, because it has minimum anterior border, and formed by the cutting of extremely thin stainless steel sheet, and stainless steel sheet has surfaces hardened, to overcome wearing and tearing.
We utilize the pilot plant that per hour can handle 10 cubic metres to carry out preliminary study.This pilot plant is designed to movably form, it is re-positioned at a plurality of test sites.The design of pilot plant is to be made of three modules with particular task at first.
The also emulsion of transferring oil is prepared, held to first module according to the content of density, flow velocity and the coal of feeding mud with in check speed.Second module relates to the stirring of mud, the formation and the dehydration procedure of fine coal condensation product, and the 3rd module relates to the storage of oil in bulk.
In METHOD FOR CONTINUOUS DETERMINATION and writing task parameter, fully automated also is provided with testing apparatus and the speed-change control device of pump and the pilot plant of stirrer is allowed technologic variation.Product is on action of gravity is moved to the belt that gathers materials under this structure, and wake flow then is imported in the suitable treatment loop.When to pilot plant's charging, the underflow (tailings thickener underflow) of wake flow thickener can be set.Between detection period, solid concentration can change in weight percent is the scope of 10-25% in the charging, and ash content can change in the scope of 20-25%.The rate of recovery of the combustiblecomponents of pilot plant is 75-90% under usual conditions, simultaneously according to the tonnage of drying products, only needs to add the oil of 8-10%.Its ash content of made product very low (less than 10%), but the bending of vibratory screening apparatus (bend) dewatering system produces the humidity high product.Fig. 4 shows the representative data of being concluded out by the operation of pilot plant.Under the operational condition and similar feed mud condition of routine, we find that these results can reproduce, and corresponding with the coal facies in specific coal seam.Data representation ash content among Fig. 5 is that 8.1% o'clock its product recovery rate is 72%, and to use oily coacervation can be to reclaim combustiblematerials 85.3% 22.4% the feed mud from containing ash content.
When operator require SOAP factory to come into operation, only need press the button on interior operator's interface screen between washing coal control, just can begin the operation procedure of factory automatically.
One self-acting valve is opened, and allows mud to flow to SOAP factory from the processing pipeline of wake flow thickener.Be installed in pump on the feeding pipe and controlling charging, and the mud that exceeds factory's needs is imported into the tailing pond of SOAP factory factory.The mud charging of constant flow rate and the oil of controlling the size automatically are transported to the high speed shear agitating procedure.
The rotating speed of joining oil pump of fixed displacement is controlled by the algorithm of enrolling in the PLC program, and algorithm has been considered current operating parameters: the oil mass of flow velocity, adding and the nature parameters of mud, for example density and ash content.
The mud of conglomerate overflows in the primary separator that adds fresh water.Condensation product will float.Some liquid that are rich in mineral are removed from overflow, and the rest part of condensation product and liquid flows to draining screen.The product that comes out from draining screen outputs on the transfer roller that gathers materials, and what be equipped with a monitoring continuously factory output on this transfer roller weighs instrument from traverse.Transfer roller will be transported on the main conveyor of coal washing product by the product that condensing method is made, and mix mutually with coal washing product.Tailing stream by draining screen combines to tailing pond and with mud, and the charging that exceeds the art breading ability is handled dam (tailings disposal dam) by pump from the mine tailing at scene.
Entire method is automatic from start to end fully.Conventional operation only need be checked factory on the basis of setting device, and the problem of circular processing.If emergency situation, but operator's close the plant.And can factory be decommissioned by the button on the operation interface or by the emergency stop in the factory.
Following result is drawn by another SOAP factory:
The sum of-real work day: 15 (comprising 24 hours zone shutdown and 24 hours servicing time)
Total hours of-factory's running in during this period: 153 (88% is effective)
-ultimate production: 845 tons (average 9.3% ash content, specific energy GAD of 45.5% moisture and 31.52MJ/ kilogram)
The average consumprion of one ton of coal of-every product (10% adjustable moisture): 107 liters
The result of another test shows: the yield rate between turn(a)round is 64%.Oil consumption in the monitoring phase in three weeks shows: reclaiming salable oil per ton on average needs 107 liters of oil.
The high frequency screening technology can be produced the product of Duoing than expected value under the operational condition of routine.
We test the many kinds of methods that the dusting cover switchboard of laser cutting is fixed on the high frequency.The purpose of these tests is to seek a kind of fixing means, and this method can not only make condensation product farthest dewater, and keeps throughput simultaneously, and makes the longest-lived of sieve.
The important factor of the oily coacervation success that grease separation is selected is :-according to the content of coal in the mud, rather than the content of all solids, only use feed rate meter, densometer and ash content meter to adjust the dispensing of emulsion.So just reduced the influence of content of mineral substances.-high-frequency high-speed shear agitation method guarantees that oil consumption is minimum, and the oil in water emulsion of this technology of feeding is forming condensation product and making condensation product change broad aspect very effective; The exploitation of emulsion chemistry allows to use in the method a spot of waste oil; On high frequency sieve, use the thin sieve plate of laser cutting, thereby make coal dewatering agglomerated together and mineral substance is separated with condensation product.
Those skilled in the art should be realized that: under the prerequisite that does not break away from protection domain of the present invention, can make various variation and modification to the present invention.
Claims (35)
1, a kind of oily condensing method that is used for separating and reclaiming the condensation product of coal from mud, this method comprises:
Be used for from wherein reclaiming the mud source of coal;
Proofing unit directly or indirectly is connected with described mud, is used to detect the preset parameter of described mud state;
The device that is connected with proofing unit and the described immediate status parameter value that records is reacted;
It is characterized in that: the described device control/adjustment flocculation agent that described state parameter is reacted with certain speed or flow volume delivery in mud, thereby for the flocculation agent of predetermined amount, use minimum flocculation agent to reclaim maximum fine coal, wherein said speed or flow are determined by at least one described state parameter.
2, method according to claim 1, it is characterized in that: the described device that described state parameter is reacted comprises at least one signal processor unit and an interface that is used between described proofing unit and the described treatment unit, is used for sending described state parameter to be used to process described treatment unit.
3, a kind of oily condensing method that is used for reclaiming the fine coal condensation product from mud, this method comprises:
Be used for from wherein reclaiming the mud source of coal;
Be used to measure the proofing unit of described mud preset parameter;
At least one signal processor unit that the reading of described parameter is reacted directly or indirectly is connected with control device with proofing unit, described signal processor unit be used for control/adjustment flocculation agent with certain speed or flow volume delivery to mud, thereby for the flocculation agent of predetermined amount, use minimum flocculation agent to reclaim maximum fine coal, wherein said speed or flow are determined by at least one described state parameter.
4, according to claim 2 or 3 described methods, it is characterized in that: described proofing unit comprises at least one probe, and described probe comprises at least one sensor, is used to detect and receive the state parameter of described mud.
5, method according to claim 4 is characterized in that: described at least one probe is partially immersed in the described mud at least, is used to detect described parameter.
6, method according to claim 5 is characterized in that: two instant content of determining ash content in the mud of probe are arranged.
7, method according to claim 6 is characterized in that: the probe of first in described two probes is the density probe, and second probe is the mineral content probe.
8, method according to claim 7 is characterized in that: described signal processor unit comprise that PC that a stylobate is connected in the processing unit that is connected with described probe and one react to described processing unit and with the programmable (PLC) of described mud source UNICOM.
9, method according to claim 8 is characterized in that: a PLC and a densometer and a under meter that is arranged in the feed-pipe link, and described feed-pipe forms described mud source.
10, method according to claim 9 is characterized in that: PLC is connected with a pump that is driven by speed-changing driving device, and it can be according to reacting based on the variation of the measured mud state parameter of computer processing unit.
11, method according to claim 10 is characterized in that: described flocculation agent and mud or be stirred in the mud storage receptacle or in independent high speed shear stirred vessel.
12, method according to claim 11 is characterized in that: described mud comprises the mixture of coal/oil/water at least.
13, method according to claim 12 is characterized in that: described flocculation agent is the oil in the water-dispersion emulsion, and this emulsion only is the mixture of oil or oil and water and additive, thereby is beneficial to the dispersion of oil in water.
14, method according to claim 13 is characterized in that: described emulsion comprises the You Heshui that selects, or water of selecting and surfactant.
15, method according to claim 14, it is characterized in that: the state parameter of described mud is popped one's head in instant and is detected continuously, and its state parameter also comprises the content of coal grain, the quality (kilogram) of non-colliery material, total mass of solid particles (kilogram), the pH value of the mixture of mud and oil.
16, method according to claim 15 is characterized in that: first probe detects the solid total amount, and second probe detects the concentration of mineral substance.
17, method according to claim 16 is characterized in that: mud generally comprises the solid of 2%-50%, and 5%-60% is a mineral substance in the described solid.
18, method according to claim 17 is characterized in that: described probe is arranged on the feed-pipe or contiguous feed-pipe setting, described feed-pipe with before described slurry transportation is in the stirred vessel with slurry transportation to storage receptacle.
19, method according to claim 18 is characterized in that: handled by the program of computer by the parameter that described probe is measured, and the described pump of the driven by program of computer, thus join mud amount in oil or the oil/water-in-oil emulsion by online control.
20, method according to claim 19 is characterized in that: described pump is reacted to the content of coal in the described mud.
21, method according to claim 20 also comprises: a primary separator that is connected with described storage receptacle or stirred vessel, described separator can comprise a swirler, settling tank, flotation unit or a whizzer.
22, method according to claim 21 also comprises: an one-level dewatering unit that is connected with primary separator or described storage receptacle or described stirred vessel.
23, method according to claim 22 is characterized in that: described high speed shear stirrer comprises a high speed shear agitator.
24, method according to claim 23 is characterized in that: the conveying of oily flocculation agent is automatic.
25, a kind of method that is used for separating and reclaiming from coal/water/slurry of mineral fine coal, wherein said mud are to be discharged by coal washery or tailing pond by the conveying of controlling the mixture of selecting in advance, and described method comprises:
Coal/water/slurry of mineral is delivered to one first storage receptacle by the mud feed-pipe;
One second storage receptacle is used for receiving and the container mixture; One pump is connected with described second storage receptacle; It is characterized in that: described first and second storage receptacles and a stirred vessel link, and described stirred vessel receives described coal/water/slurry of mineral from described first storage receptacle, receive described mixture from described second storage receptacle;
A primary separator that links with described stirred vessel;
A vibratory screening apparatus separator and described primary separator and/or stirred vessel link; Described method also comprises:
With the control device that at least one transmitter links, described transmitter contacts with described mud, is used to detect the state parameter of described mud;
One pump and described second storage receptacle link, and according to described state parameter action, the described control device of wherein controlling described pump is to from described transmitter and represent that the signal of the parameter of coal/water/slurry of mineral reacts, thereby adjusts mixture flows into described stirred vessel from described second container flow.
26, a kind of being used for from the method for coal/water/slurry of mineral separation of fine coal, this method comprises: one is used for coal/water/slurry of mineral is transported to feed-pipe in one first storage receptacle;
One second storage receptacle is used for receiving and holding mixture, and comprises a transferpump with its UNICOM;
One stirred vessel be that first and second storage receptacles link;
Control device comprises at least one and the contacted detection probe of described coal/water/slurry of mineral, is used at described feed-pipe and/or detects the state parameter of described coal/water/slurry of mineral at described first storage receptacle;
It is characterized in that: described control device is controlled the conveying of described mixture to described stirred vessel by described pump according to the state parameter that records, and described state parameter comprises the concentration of fine coal in coal/water in first storage receptacle/slurry of mineral.
27, a kind ofly be used for utilizing the oily condensing method of mixture from coal/water/slurry of mineral separation of fine coal, it is characterized in that: this method comprises the computer based control device, this control device is being controlled described mixture and is being held the conveying of the container of coal/water/slurry of mineral from a container to another with certain speed, and speed wherein is decided by the state parameter of described coal/water/slurry of mineral of recording; Thereby the use of control mixture in described method.
28, according to one or more method of claim 23 to 25, it is characterized in that: described mixture comprises flocculation agent.
29, method according to claim 26 is characterized in that: described flocculation agent comprises the oil in the water-dispersion emulsion, the mixture of oil, water and additive, thus be beneficial to the dispersion of oil in water.
30, method according to claim 29 is characterized in that: the conveying of described flocculation agent is automatic.
31, a kind of being used for comprises: a central processing unit at oily coacervation control device in adjustment mixture adding coal/water/slurry of mineral from the method for mud recovery fine coal;
At least one remote sensor is used to detect the state parameter or the composition of described coal/water/slurry of mineral;
The device that connects described remote sensor and described central processing unit is used for the data of relevant mud state are sent to described central processing unit, and described state parameter is recorded by described at least one transmitter; Central processing unit is connected to a device on the variable-speed pump, wherein variable-speed pump can be according to the conveying of adjusting mixture in the mixture storage receptacle from the signal of central processing unit, the work of the state parameter Data Control pump that central processing unit records according to described at least one transmitter.
32, a kind of Controlling System that is used for adjusting from the method for mud recovery fine coal at coacervation coal slime slurry input speed and solids concn comprises:
One central processing unit;
At least one remote sensor is used to measure the state parameter or the composition of described coal/water/slurry of mineral;
The device that connects described remote sensor and described central processing unit is used for sending the data that described at least one transmitter records to central processing unit;
The device that connects a central processing unit and a variable-speed pump, described variable-speed pump are used for adjusting transfer rate and the solids concn from coal slime slurry feed-pipe to coal slime slurry storage receptacle before or after mud enters a stirred vessel or described stirred vessel.
33, a kind ofly be used to control the device of flocculation agent, comprise: the probe that at least one contacts with described mud to the slurry transportation that therefrom reclaims fine coal; A signal processing unit, this signal processing unit and described at least one UNICOM and reception and processing data of popping one's head in from the relevant described mud state of described at least one probe;
One programmable (PLC) links with described processing unit, and receives the data from described processing unit;
It is characterized in that: described PLC monitoring is transported to the density and the flow of the mud of described probe; Described PLC and a pump UNICOM, this pump is controlled by the data of described mud and the datamation of the described mud that basis receives; Described pump is reacted to the output from described PLC, thereby adjusts the conveying of flocculation agent to described mud.
34, a kind of high speed shear stirrer that is used for above-mentioned oily condensing method is characterized in that: described stirrer comprises a high speed shear agitator and has the baffle plate of blade shape, is used for the ratio of axial flow and vertical flow and makes the eddy current maximum.
35, stirrer according to claim 34 is characterized in that: in 1: 2 to 1: 8 scope, power-handling capability is between 0.5 and 10 for the diameter of described agitator and the diameter ratio of container (if being round shape).
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPP0145A AUPP014597A0 (en) | 1997-11-03 | 1997-11-03 | Controlled production and recovery of fine-coal agglomerates |
| AUPP0145 | 1997-11-03 | ||
| AUPP5186 | 1998-08-10 | ||
| AUPP5186A AUPP518698A0 (en) | 1998-08-10 | 1998-08-10 | Controlled production and recovery of fine-coal agglomerates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1346297A true CN1346297A (en) | 2002-04-24 |
Family
ID=25645646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98812465A Pending CN1346297A (en) | 1997-11-03 | 1998-11-03 | Controlled production and recovery of fine-coal agglomerates |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1066114A4 (en) |
| CN (1) | CN1346297A (en) |
| WO (1) | WO1999022871A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102302976A (en) * | 2011-06-28 | 2012-01-04 | 平顶山天安煤业股份有限公司田庄选煤厂 | Coarse coal slime hydraulic classification process |
| CN103071583A (en) * | 2013-01-28 | 2013-05-01 | 中国煤炭进出口公司 | Control method and control system of dense-medium density in dense-medium separation |
| CN103995498A (en) * | 2013-07-18 | 2014-08-20 | 俞元洪 | Control system for slurry dehydration solidification construction device |
| CN107398093A (en) * | 2012-06-21 | 2017-11-28 | 桑科能源股份有限公司 | Scattered and regulation technology for thick fine tailings dehydrating operations |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100429156C (en) * | 2006-01-20 | 2008-10-29 | 中国矿业大学 | Highly efficient clarification method of circulating black water |
| DE102012111425A1 (en) * | 2011-11-25 | 2013-09-19 | Rheinisch-Westfälische Technische Hochschule RWTH | Method for separating e.g. calcite/quartz compounds during extracting mineral compounds of metal in deep mining application, involves crushing agglomerated particles, valuable materials and residue in density separation and floatation steps |
| AU2014342239A1 (en) * | 2013-10-30 | 2016-04-21 | Flsmidth A/S | Feed conditioning automation |
| CN105233530B (en) * | 2015-09-24 | 2017-02-01 | 安徽理工大学 | Coal slime water deep clarification system, and treatment method thereof |
| CN113713968A (en) * | 2021-08-30 | 2021-11-30 | 东北大学 | In-situ online characterization method for structural characteristics of micro-fine particle iron mineral aggregate |
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| US4282004A (en) * | 1978-12-20 | 1981-08-04 | Atlantic Richfield Company | Process for agglomerating coal |
| GB2121431A (en) * | 1982-06-08 | 1983-12-21 | Exxon Research Engineering Co | Isomerisation of butene-1 to butene-2 in isobutylene |
| US4552651A (en) * | 1983-11-14 | 1985-11-12 | Conoco Inc. | Control of froth cell performance through the use of differential bubbler tubes |
| CA1216551A (en) * | 1984-05-23 | 1987-01-13 | Her Majesty The Queen In Right Of The Province Of Alberta As Represented By The Minister Of Energy And Natural Resources | Process for the selective agglomeration of sub- bituminous coal fines |
| DD244128A1 (en) * | 1985-12-09 | 1987-03-25 | Senftenberg Braunkohle | METHOD FOR CONTINUOUS MULTI-STAGE CLEANING OF CARBONATED WASTEWATER |
| CA1267101A (en) * | 1986-07-04 | 1990-03-27 | Josef A. Mikhlin | Method of producing fuel of relatively higher calorific value from low rank and oxidized coal |
| US4810371A (en) * | 1987-12-31 | 1989-03-07 | Consolidation Coal Company | Process for fine coal cleaning |
| US5006231A (en) * | 1989-03-20 | 1991-04-09 | Consolidation Coal Company | Flocculant control system |
| US5256169A (en) * | 1991-07-12 | 1993-10-26 | Betz Laboratories, Inc. | Methods and compositions for dewatering and suppressing dust during processing of fine coal |
-
1998
- 1998-11-03 WO PCT/AU1998/000910 patent/WO1999022871A1/en not_active Application Discontinuation
- 1998-11-03 EP EP98952419A patent/EP1066114A4/en not_active Withdrawn
- 1998-11-03 CN CN98812465A patent/CN1346297A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102302976A (en) * | 2011-06-28 | 2012-01-04 | 平顶山天安煤业股份有限公司田庄选煤厂 | Coarse coal slime hydraulic classification process |
| CN107398093A (en) * | 2012-06-21 | 2017-11-28 | 桑科能源股份有限公司 | Scattered and regulation technology for thick fine tailings dehydrating operations |
| CN107398093B (en) * | 2012-06-21 | 2021-07-13 | 桑科能源股份有限公司 | Dispersion and conditioning technology for thick fine tailings dewatering operation |
| CN103071583A (en) * | 2013-01-28 | 2013-05-01 | 中国煤炭进出口公司 | Control method and control system of dense-medium density in dense-medium separation |
| CN103071583B (en) * | 2013-01-28 | 2016-01-13 | 中国煤炭进出口公司 | The control method of density of heavy medium and system in a kind of dense-medium separation |
| CN103995498A (en) * | 2013-07-18 | 2014-08-20 | 俞元洪 | Control system for slurry dehydration solidification construction device |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1066114A1 (en) | 2001-01-10 |
| WO1999022871A1 (en) | 1999-05-14 |
| EP1066114A4 (en) | 2001-07-25 |
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