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WO2003004233A1 - Dispositif destine au melange d'une suspension constituee d'un melange sec prepare et d'eau avec un accelerateur de solidification pulverulent - Google Patents

Dispositif destine au melange d'une suspension constituee d'un melange sec prepare et d'eau avec un accelerateur de solidification pulverulent Download PDF

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Publication number
WO2003004233A1
WO2003004233A1 PCT/EP2001/007695 EP0107695W WO03004233A1 WO 2003004233 A1 WO2003004233 A1 WO 2003004233A1 EP 0107695 W EP0107695 W EP 0107695W WO 03004233 A1 WO03004233 A1 WO 03004233A1
Authority
WO
WIPO (PCT)
Prior art keywords
transmission
compartment
mixing device
mixing
vessel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2001/007695
Other languages
German (de)
English (en)
Inventor
Jürgen Roll
Winfried Koensler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mineralplus Gesellschaft fuer Mineralstoffaufbereitung und Verwertung mbH
Original Assignee
Mineralplus Gesellschaft fuer Mineralstoffaufbereitung und Verwertung mbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mineralplus Gesellschaft fuer Mineralstoffaufbereitung und Verwertung mbH filed Critical Mineralplus Gesellschaft fuer Mineralstoffaufbereitung und Verwertung mbH
Priority to PCT/EP2001/007695 priority Critical patent/WO2003004233A1/fr
Publication of WO2003004233A1 publication Critical patent/WO2003004233A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/02—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions without using driven mechanical means effecting the mixing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50—Mixing liquids with solids
    • B01F23/56—Mixing liquids with solids by introducing solids in liquids, e.g. dispersing or dissolving
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
    • B01F25/27—Mixing by jetting components into a conduit for agitating its contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
    • B01F33/404—Mixers using gas or liquid agitation, e.g. with air supply tubes for mixing material moving continuously therethrough, e.g. using impinging jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/06—Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors
    • B28C7/062—Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors with a pneumatic or hydraulic conveyor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/12—Supplying or proportioning liquid ingredients
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1404—Arrangements for supplying particulate material
    • B05B7/1431—Arrangements for supplying particulate material comprising means for supplying an additional liquid

Definitions

  • the invention relates to a mixing device for mixing a dry ready mixture / water suspension with a powdery solidification accelerator.
  • Mixing device includes a mixing nozzle with an inlet channel, to which a suspension feed line is connected, through which the dry ready-mix / water suspension can be fed to the mixing nozzle, and a Plempenkanal to which a feed line is connected, through which the
  • Mixing nozzle of the powdery solidification accelerator can be fed.
  • a propellant air supply line which is connected to the inlet duct of the mixing nozzle and is arranged upstream of a union point of the inlet duct and the plank duct of the mixing nozzle in the direction of flow of the dry ready-mix / water suspension. Due to the fact that the dry ready mixture / water suspension is acted upon by propellant air directly in front of the junction between the inlet duct and the Plempenkanal, the mixing thereof with the powdery solidification accelerator inside and downstream of the mixing nozzle can be promoted considerably, which leads to the desired better conditioning of the building material leaving the mixing device and thus leads to the desired setting behavior.
  • a mixer chamber is advantageously arranged between the union point of the inlet channel and the plenum channel of the mixing nozzle and a discharge hose downstream of the mixing nozzle, in which the dry ready mixture / water suspension can be thoroughly mixed with the powdery solidification accelerator.
  • the discharge hose can be between 1.50 and 2.0 m long.
  • the plenum channel of the mixing nozzle has a water connection which is arranged upstream of the junction between the inlet channel and the plenum channel of the mixing nozzle and through which the powdery solidification accelerator can be prewetted with water.
  • an atomizing nozzle is arranged in the water connection of the plumbing duct of the mixing nozzle, by means of which the water entering the plumbing duct of the mixing nozzle through the water connection can be finely atomized.
  • the supply line for the powdery solidification accelerator is connected on the inlet side to a medium-pressure blow-through lock, which has a feed compressed air supply line through which it can be supplied with a feed compressed air flow and a feed device which the powdery solidification accelerator can be introduced into the medium-pressure blow-through lock.
  • the pulverulent solidification accelerator is then fed from the medium-pressure blow-lock through the feed line to the plenum channel of the mixing nozzle by means of the conveying compressed air flow.
  • the infeed device of the medium pressure blow-through can be designed in a suitable manner as a sealed cellular wheel sluice.
  • the feed-in device of the medium-pressure blow-through lock has a controllable drive device, preferably a controllable compressed air drive.
  • the infeed device of the medium-pressure blow-through lock is advantageously connected to a transmission vessel, from which powdery solidification accelerator can be introduced into the infeed device and which is divided into a non-pressurized input section and a pressurized transmission section. Due to this division of the transmitter vessel into two parts, it is possible to design its non-pressurized input compartment in an optimal way to accommodate powdery solidification accelerators, whereas the pressurizable transmitter compartment can be configured in an optimal manner for the transition of the powdery solidification accelerator into the infeed device of the medium-pressure blow-through lock.
  • the transmission vessel comprising the input and transmission compartments is advantageously designed as a uniform pressure vessel.
  • a partition is arranged between the input compartment and the transmission compartment of the transmission vessel.
  • a screw conveyor is attached in the transmission vessel. is arranged, can be conveyed from the input compartment into the transmission compartment by means of the powdery solidification accelerator.
  • the screw conveyor advantageously extends in the longitudinal direction both through the input and through the transmission compartment, it being arranged in the region of the partition between the input and transmission compartments in a pressure port which is located on both sides. on the part of the partition wall extends into both the transmission compartment and the input compartment.
  • the pressure-related separation between the sending compartment and the entrance compartment can then be ensured within the pressure port by a product plug made of powdery solidification accelerator.
  • the screw conveyor can be located on the one hand in the partition wall
  • End wall of the transmission compartment and on the other hand, be mounted in the end wall of the input compartment of the transmission vessel remote from the partition.
  • the screw conveyor has two counter-rotating screw conveyors. points, by means of which the exit of the transmission compartment can be charged with powdery solidification accelerator from two sides.
  • the transmission compartment of the transmission vessel can advantageously be pressurized with compressed air through a compressed air connection in order to build up the pressure required for conveying the powdery solidification accelerator.
  • the transmission compartment is provided with a filling level measuring device by means of which the screw conveyor can be controlled.
  • the transmission compartment of the transmission vessel is advantageously provided with a pressure measuring device, preferably with a contact manometer.
  • the input compartment of the transmission vessel can advantageously be fed continuously with a powdery solidification accelerator through an inlet connection by means of a fluid pump.
  • the input compartment advantageously has a fill level measuring device by means of which the fluid pump can be controlled.
  • the input compartment of the transmission vessel is advantageously provided with a pressure measuring device, preferably a contact manometer.
  • the input compartment of the transmitter vessel should furthermore have a ventilation device which is associated with a mechanical overpressure safety device and by means of which, in the presence of a constant overpressure in the input compartment, this overpressure is formed in a fluid container upstream of the input part or in a fluid container located upstream of this fluid container and the input compartment Fuid effet is relaxing.
  • the input compartment has a temperature measuring device.
  • the transmitter vessel described above makes it possible to keep the pressure prevailing in the feed line for the powdery solidification accelerator largely constant, so that the mixing of the two components within the mixing nozzle of the mixing device takes place under largely constant pressure conditions and thus with high and above all consistent quality can be done.
  • the fluid pump feeding the input compartment of the transmission vessel can advantageously be designed as a compressed air membrane pump.
  • a fluid container for the powdery solidification accelerator can be connected upstream.
  • NEN fluid base which is sieve-shaped and can be acted upon from below with compressed air, so that a fluidized bed can be designed already within the fluid container.
  • the fluid container can expediently be fed continuously or discontinuously with a powdery solidification accelerator via a filler neck.
  • the sieve-like fluid base of the fluid container is arranged obliquely within the fluid container and can be pressurized with compressed air from below via compressed air connections arranged there in the fluid container.
  • the fluid container expediently has an overpressure safety device.
  • the fluid container is provided with one, preferably with two ventilation outlets.
  • suspension brackets By means of which monorail overhead conveyor transportation is made possible, and with forklift receptacles.
  • an installation of the fluid container can be facilitated by feet, which should advantageously be designed to be foldable for transport purposes.
  • a method according to the invention for mixing a dry ready mixture / water suspension with a powdery solidification accelerator in which the dry ready mix / water suspension and the powdery solidification accelerator are brought together in a mixing nozzle, the dry ready mixture / water suspension is subjected to propellant air before it is brought together with the powdery solidification accelerator.
  • the powdery solidification accelerator is advantageously prewetted with water before it is combined with the ready-to-dry mixture / water suspension.
  • the water pre-wetting the powdery solidification accelerator is expediently atomized.
  • Figure 1 shows an advantageous embodiment of a mixing device according to the invention
  • Figure 2 shows an embodiment of a mixing nozzle in
  • FIG. 1 shown mixing device according to the invention
  • FIG. 3 shows a side view of a transmission vessel of a mixing device according to the invention shown in FIG. 1;
  • Figure 4 is a front view of the transmitter vessel shown in Figure 3;
  • Figure 5 is a sectional view of the transmitter vessel shown in Figures 3 and 4; and Figure 6 is a sectional view of a fluid container upstream of the transmitter vessel shown in Figures 3 to 5 of the mixing device according to the invention shown in Figure 1.
  • a mixing device 1 according to the invention shown in FIG. 1 is arranged directly at a place of use, which may be underground in a mining operation or in a tunnel or tunnel construction operation.
  • a route dam must be created using a suitable building material, cavities have to be filled or extensions have to be backfilled, or it has to be temporarily expanded using shotcrete or the like. to create. It is essential in any case that the building material solidifies shortly after leaving the mixing device 1 to the extent that it meets the structural requirements placed on it.
  • the mixing device 1 according to the invention includes a mixing nozzle 2 which is shown in FIG. 1 as part of the mixing device 1 according to the invention and in FIG. 2 individually.
  • the mixing nozzle 2 shown in detail in FIG. 2 has an inlet channel 3 which, as can be seen from FIG. 1, is connected to a suspension feed line 4, which can be designed as a hose or pipe.
  • This suspension feed line 4 can optionally extend over several kilometers to the place of use or to the mixing nozzle 2 of the mixing device 1.
  • Ready-to-use dry mix / water suspension applied from a dry mix mixed with water is produced and forms an essential part of the building material required at the place of use of the mixing device 1.
  • the dry ready-mix / water suspension is put together in such a way that it can easily be conveyed hydromechanically through the suspension feed line 4.
  • the mixing nozzle 2 of the mixing device 1 has a plunging channel 5, which unites at a union point 6 of the mixing nozzle 2 with the inlet channel 3 thereof.
  • the angle between the inlet duct 3 and the plempenkanal 5 of the mixing nozzle 2 is comparatively small.
  • the plempenkanal 5 of the mixing nozzle 2 is connected on the input side to a feed line 7 through which a powdery solidification accelerator is fed to the Plempenkanal 5.
  • This pulverulent solidification accelerator which can advantageously be lignite fly ash, is added in the mixing nozzle 2 or at its junction 6 to the dry mix / water suspension fed through the inlet channel 3 of the mixing nozzle 2. It is hereby achieved that the building material consisting of the dry ready mixture / water suspension and the powdery solidification accelerator or the lignite fly ash solidifies briefly after leaving the mixing device 1.
  • the supply line 7 is connected at its end opposite the plench channel 5 of the mixing nozzle 2 to a medium-pressure blow-through lock 8.
  • a feed-in device in the form of a cellular wheel lock 9 is arranged, which is driven by a controllable compressed air drive 10.
  • the pulverulent solidification accelerator or the lignite fly ash is introduced through the cellular wheel sluice 9 from a transmission vessel 11 to be described into the medium-pressure blow-through sluice 8.
  • the cellular wheel sluice 9 is accommodated in a sealed design within the medium pressure blow-through sluice 8.
  • the transmitter vessel shown in detail in FIGS. 3 to 5 is arranged or designed such that the pulverulent solidification accelerator contained therein or lignite fly ash contained in it is fed through an outlet 12 of the transmitter vessel 11 to the input side of the rotary valve 9.
  • the transmitter vessel 11 is filled with a powdery solidification accelerator or with brown coal fly ash through an inlet connection 13.
  • the transmitter vessel 11 is continuously filled with powdery solidification accelerator or lignite fly ash at the place of use of the mixing device according to the invention.
  • the medium-pressure blow-through lock 8 is connected to a feed compressed air supply line 14, through which a feed pressure air flow is introduced into the medium-pressure blow-through lock 8, which serves to feed the powdery solidification accelerator or the lignite fly ash through the feed line 7 to the plenching channel 5 of the mixing nozzle 3 and to the union point 6 of the mixing nozzle 2, ie to promote dry mix / water suspension.
  • the mixing device 1 has a mixer chamber 15 at the downstream end of the mixing nozzle 2, in which an intimate mixing between the dry ready-mix / water suspension and the powdery solidification accelerator or the lignite fly ash is ensured before the appropriately conditioned building material emerges from the mixing device 1 through a discharge hose 16 of the mixing device 1.
  • the powdery solidification accelerator can be lignite fly ash; however, the use of other waste materials is also possible, e.g. fluidized bed ash and ashes from other incineration plants can be used, e.g. from sewage sludge or waste incineration plants.
  • the mixing nozzle 2 of the mixing device 1 has a driving air connection 17 which is provided in the inlet duct 3 of the mixing nozzle in front of the union point 6 between the inlet duct 3 and plempenkanal 5 of the mixing nozzle.
  • the driving air connection 17 is connected to a driving air supply line 18, as can be seen in FIG. 1.
  • the propellant air connection 17 or the propellant air supply line 18 Through the propellant air connection 17 or the propellant air supply line 18, the inlet duct 3 of the mixing nozzle 2 and thus the dry ready-mix / water suspension flowing through it can be acted upon with an additional air flow. As a result, the ready-to-dry / water suspension can be further accelerated; Furthermore, the propellant air connection 17 can also be used in order to clean the mixing device 1 or its mixing nozzle 2.
  • the pressure and quantity ratios with respect to the dry ready-mix / water suspension and the powdery solidification accelerator are coordinated with one another in such a way that the consistency required for the intended use of the building material is set at the outlet end of the discharge hose 16 of the mixing device 1.
  • the mixer chamber 15 of the mixing device according to the invention is designed in such a way that there are optimal flow conditions for mixing the dry ready mixture / water suspension with the powdery solidification accelerator; in any case, dust formation is avoided by the mixing device 1.
  • a water connection 15 is provided, which is supplied with water from a water supply line, not shown in the figures.
  • the water connection 19 is provided near its entry surface into the plumbing channel 5 of the mixing nozzle 2 with an atomizing nozzle 20 which is only shown in principle in FIG.
  • the water connection 19 is arranged in the Plempenkanal 5 upstream of the union 6 between the inlet channel 3 and the Plempenkanal 5 of the mixing nozzle. Accordingly, the powdery solidification accelerator can be prewetted with water before it is combined with the ready-to-dry mixture / water suspension. Through the water connection 19, the powdery solidification accelerator can be acted upon by water even when the plumbing channel 5 becomes blocked.
  • the transmission vessel 11 arranged upstream of the medium-pressure blow-through lock 8 or the cellular wheel lock 9 is, as already mentioned above, shown in more detail in FIGS. 3 to 5.
  • the transmission vessel 11 has an unpressurized input compartment 21 and a transmission compartment 22 which can be pressurized or pressurized. Both the input compartment 21 and the transmission compartment 22 of the transmission vessel 11 are designed as pressure vessels, the input compartment 21 and the transmission compartment 22 being in the form of a complete unit of the transmitter vessel 11 are formed.
  • a partition 23 extends approximately in the middle between them.
  • the unpressurized input compartment 21 of the transmission vessel 11 is continuously filled with a powdery solidification accelerator or lignite fly ash by means of a fluid pump 24 through a fluid line 25 from a fluid container 26.
  • the input compartment 21 has the inlet connection 13, to which the fluid line 25 is connected.
  • the input compartment 21 of the transmitter vessel 11 has a fill level measuring device 27, by means of which the operation of the fluid pump 24 located in the fluid line 25 between the input compartment 21 and the fluid container 26 can be controlled, the fluid pump 24 advantageously being able to be designed as a compressed air diaphragm pump.
  • the powdery solidification accelerator or the lignite fly ash is conveyed from the unpressurized input compartment 21 into the pressurizable transmission compartment 22 of the transmission vessel by means of a screw conveyor 28.
  • the pressure screw conveyor or the screw conveyor 28 extends in the longitudinal direction both through the input compartment 21 and through the transmission compartment 22 of the transmission vessel 11. It is in a first bearing 29, which is provided in the end wall 30 of the input compartment 21, and in a second Bearing 31, which is provided in the end wall 32 remote from the partition wall of the transmission compartment 22 of the transmission vessel, is rotatably mounted.
  • the drive of the screw conveyor 28, not shown in the figures, is preferably provided in the region of the first bearing 29.
  • a pressure connection 33 is provided, through which the screw conveyor 28 extends from the input compartment 21 into the transmission compartment 22 or vice versa.
  • the pressure port projects into both the input compartment 21 and the transmission compartment 22 of the transmission vessel 1.
  • the screw conveyor 28 has a first screw conveyor 34 which extends in the input compartment 21 of the transmission vessel 11 and approximately from the first bearing 29 of the screw conveyor 28 to the partition 33 between the input compartment 21 and the transmission compartment 22. Furthermore, the screw conveyor 28 has a screw-free section 35 which extends approximately from the partition 23 between the input section 21 and the transmission section 22 to the central region of the outlet 12 of the transmission section 22, this screw-free section 35 in particular in the section of the pressure port 33 on the transmission section side is arranged. Between its second bearing 31 and the central area of the outlet 12, the screw conveyor 28 has a second screw conveyor 36, the conveying direction of which device to which the first screw conveyor 34 is opposite.
  • the pulverulent solidification accelerator can thus be conveyed from the input compartment 21 of the transmission vessel 11 into its transmission compartment 22 by means of the screw conveyor 28, and in addition the outlet 12 of the transmission vessel 11 or the transmission compartment 22 can be fed from both sides with powdery solidification accelerator or lignite fly ash.
  • the pressure connection 33 in cooperation with the screw-free section 35 of the screw conveyor 28, leads to the pressure-free inlet compartment and the pressurizable transmission compartment 22 of the transmission vessel being sealed by a product plug provided within the pressure connection 33.
  • This product plug can withstand a counter pressure of up to approx. 3.5 bar.
  • a temperature measuring device 37 is also provided in the input compartment 21 of the transmission vessel 11, by means of which the thermal conditions within the input compartment 21 can be monitored.
  • Pressure monitoring in the input compartment 21 of the transmission vessel 11 is accomplished by means of a contact manometer 38, which operates in the range between 0 and 250 mbar.
  • the input compartment 21 of the transmitter vessel 11 also has a mechanical overpressure protection and venting device 39, by means of which all the shut-off elements are closed, with constant overpressure in the unpressurized input compartment 21 in the event of blockages or leaks in the area of the product plug in the pressure port 33, the existing overpressure being closed via a ventilation flap of the mechanical overpressure tion and ventilation device 39 is relaxed in the fluid container 26 or in the fluid line 25.
  • the input compartment 21 of the transmission vessel 11 is provided with a manhole 40.
  • the transmission compartment 22 of the transmission vessel 40 has a compressed air connection 41 which is connected to a compressed air source (not shown in the figures) and through which a delivery pressure is built up inside the transmission compartment 22 of the transmission vessel 11.
  • This delivery pressure can be up to 3.0 bar.
  • the bulk density of the powdery solidification accelerator is about 0.6 here.
  • the transmission compartment 22 of the transmission vessel 11 has a fill level measuring device 42, by means of which the fill level in the transmission compartment 22 can be determined and which controls the drive device of the screw conveyor 28, not shown in the figures.
  • the powdery solidification accelerator or the lignite fly ash is transported by means of the screw conveyor 28 into the transmission compartment 22 of the transmission vessel 11; from there, pulverulent solidification accelerator or lignite fly ash is fed by means of the screw conveyor 28 through the outlet 12 of the transmission compartment 22 via the cellular wheel sluice 9 into the pneumatic conveying flow leading to the plempenkanal 5 of the mixing nozzle 2.
  • the fluid pump 24 and the screw conveyor 28 are switched off or on via the fill level measuring devices 27, 42, which are arranged in the unpressurized input compartment 21 or in the transmission compartment 22 of the transmission vessel, so that the same amount is always present in the input compartment 21 and in the transmission compartment 22 of the transmission vessel powdery solidification accelerator or lignite fly ash is present.
  • a pressure measuring device 43 is also provided in the transmission compartment 22 of the transmission vessel, which can also be designed as a contact manometer.
  • a safety shutdown in the range between 0 and 6.0 bar can be set for the pressure measuring device 43 or this contact manometer of the transmission compartment 22.
  • the transmission compartment 22 of the transmission vessel 11, as described above, has a maximum delivery range of approximately 400 m, the feed line 7 then being able to be designed as a DN50 blow line.
  • the transmission compartment 22 designed in this way can then have a product task of approximately 5.0 t / h.
  • the transmission compartment 22 has a manhole 44 for carrying out any repair and maintenance work.
  • a plurality of ventilation connections 45 are provided both in the input compartment 21 and in the transmission compartment 22 of the transmission vessel.
  • the fluid container 26 shown in principle in FIG. 1, from which the input compartment 21 of the transmission vessel by means of the fluid pump 24 through the fluid line 25 with powder Solidification accelerator or lignite fly ash is supplied, for example, the embodiment shown in more detail in Figure 6.
  • the fluid container 26 has a fluid base 46 which runs obliquely in the longitudinal direction and is designed in a sieve shape and runs obliquely downwards from left to right in FIG.
  • Compressed air connections 47 are provided in the wall of the fluid container below the sieve-shaped fluid base 46, so that compressed air can be applied to the fluid container below its sieve-shaped fluid base 46 and a fluidized bed can thereby be created in the area above the fluid base 46.
  • the fluid container 26 has a filler neck 48 on its upper side opposite the fluid base 46. Through the filler neck 48, the fluid container can be fed continuously or discontinuously with a powdery solidification accelerator or with lignite fly ash.
  • the fluid container also has an overpressure safety device 49 and, in the exemplary embodiment shown, is provided with two ventilation outlets 50, 51.
  • suspension tabs 52 are formed on the outer lateral surface of the fluid container 26, so that the fluid container 26 can be transported in a simple manner by means of a monorail overhead conveyor. Of course, the fluid container 26 or the like on an undercarriage. be transported.
  • the fluid container 26 is connected to the fluid line 25 via its outlet 53. To facilitate handling of the fluid container 26, the latter has forklift receptacles 54 on its outer lateral surface.
  • 26 feet 55 are provided on the outer surface of the fluid container, which are foldable for transport purposes.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)

Abstract

Dispositif destiné au mélange d'une suspension constituée d'un mélange sec préparé et d'eau avec un accélérateur de solidification pulvérulent, qui comporte une buse de mélange (2) dotée d'un canal d'amenée (3) auquel est raccordée une conduite d'alimentation (4) de suspension par laquelle la suspension constituée d'un mélange sec préparé et d'eau peut être introduite dans la buse de mélange (2), et un conduit de branchement (5) auquel est raccordée une conduite d'alimentation (7) par laquelle l'accélérateur de solidification pulvérulent peut être introduit dans la buse de mélange (2). L'objet de la présente invention est de garantir un mélange de la suspension constituée d'un mélange sec préparé et d'eau avec l'accélérateur de solidification pulvérulent répondant aux exigences d'une matière de construction à durcissement rapide. A cet effet, le dispositif de mélange selon la présente invention comporte une conduite d'alimentation (18) en air de propulsion qui est raccordée au canal d'amenée (3) de la buse de mélange (2) et située, dans le sens d'écoulement de la suspension constituée d'un mélange sec préparé et d'eau, en amont d'un site de jonction du canal d'amenée (3) et du conduit de branchement (5) de la buse de mélange (2).
PCT/EP2001/007695 2001-07-05 2001-07-05 Dispositif destine au melange d'une suspension constituee d'un melange sec prepare et d'eau avec un accelerateur de solidification pulverulent Ceased WO2003004233A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2001/007695 WO2003004233A1 (fr) 2001-07-05 2001-07-05 Dispositif destine au melange d'une suspension constituee d'un melange sec prepare et d'eau avec un accelerateur de solidification pulverulent

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Application Number Priority Date Filing Date Title
PCT/EP2001/007695 WO2003004233A1 (fr) 2001-07-05 2001-07-05 Dispositif destine au melange d'une suspension constituee d'un melange sec prepare et d'eau avec un accelerateur de solidification pulverulent

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WO2003004233A1 true WO2003004233A1 (fr) 2003-01-16

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PCT/EP2001/007695 Ceased WO2003004233A1 (fr) 2001-07-05 2001-07-05 Dispositif destine au melange d'une suspension constituee d'un melange sec prepare et d'eau avec un accelerateur de solidification pulverulent

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2946895A1 (fr) * 2014-05-20 2015-11-25 TEK.SP.ED. S.r.l. Technologie Speciali per l'Edilizia Appareil pour la production d'un aggloméré de ciment et procédé correspondant
US10617337B2 (en) 2014-06-19 2020-04-14 Glucovista Inc. Substance concentration monitoring apparatuses and methods
DE102021104997A1 (de) 2021-03-02 2022-09-08 Wilhelm Tölke GmbH & Co KG Aufbereiter

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DE1123978B (de) * 1959-12-12 1962-02-15 Franz Jos Waeschle Maschinenfa Zellenradschleuse fuer das Ein- bzw. Ausschleusen von insbesondere waermeempfindlichem, reibungsempfindlichem und schmirgelndem staub- oder pulverfoermigem Gut in bzw. aus einer Luftfoerderanlage
DE3004658A1 (de) * 1979-02-09 1981-04-16 Markus Ing. Wien Stracke Bauelemente, das dazugehoerige bauverfahren sowie vorrichtung und verfahren zur herstellung der bauelemente als praefabrikations system
FR2502538A1 (fr) * 1981-03-26 1982-10-01 Aliva Ag Dispositif pour pulveriser du beton au mouille
US5628940A (en) * 1994-07-11 1997-05-13 Reno & Son, Inc. Process for applying low-cement castable refractory material
DE19717732C1 (de) * 1997-04-26 1998-10-01 Degussa Entleervorrichtung für Bulk-Container für teilchenförmige Schüttgüter und seine Verwendung
US5976632A (en) * 1997-03-13 1999-11-02 North American Refractories Co. Dry process gunning of refractory castable

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1123978B (de) * 1959-12-12 1962-02-15 Franz Jos Waeschle Maschinenfa Zellenradschleuse fuer das Ein- bzw. Ausschleusen von insbesondere waermeempfindlichem, reibungsempfindlichem und schmirgelndem staub- oder pulverfoermigem Gut in bzw. aus einer Luftfoerderanlage
DE3004658A1 (de) * 1979-02-09 1981-04-16 Markus Ing. Wien Stracke Bauelemente, das dazugehoerige bauverfahren sowie vorrichtung und verfahren zur herstellung der bauelemente als praefabrikations system
FR2502538A1 (fr) * 1981-03-26 1982-10-01 Aliva Ag Dispositif pour pulveriser du beton au mouille
US5628940A (en) * 1994-07-11 1997-05-13 Reno & Son, Inc. Process for applying low-cement castable refractory material
US5976632A (en) * 1997-03-13 1999-11-02 North American Refractories Co. Dry process gunning of refractory castable
DE19717732C1 (de) * 1997-04-26 1998-10-01 Degussa Entleervorrichtung für Bulk-Container für teilchenförmige Schüttgüter und seine Verwendung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2946895A1 (fr) * 2014-05-20 2015-11-25 TEK.SP.ED. S.r.l. Technologie Speciali per l'Edilizia Appareil pour la production d'un aggloméré de ciment et procédé correspondant
US10617337B2 (en) 2014-06-19 2020-04-14 Glucovista Inc. Substance concentration monitoring apparatuses and methods
DE102021104997A1 (de) 2021-03-02 2022-09-08 Wilhelm Tölke GmbH & Co KG Aufbereiter

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