EP0768113B1 - Verfahren zur Herstellung von Feinstzement-/Feinstbindemittelsuspensionen - Google Patents

Verfahren zur Herstellung von Feinstzement-/Feinstbindemittelsuspensionen Download PDF

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Publication number
EP0768113B1
EP0768113B1 EP96114901A EP96114901A EP0768113B1 EP 0768113 B1 EP0768113 B1 EP 0768113B1 EP 96114901 A EP96114901 A EP 96114901A EP 96114901 A EP96114901 A EP 96114901A EP 0768113 B1 EP0768113 B1 EP 0768113B1
Authority
EP
European Patent Office
Prior art keywords
ultrafine
storage tank
cement
mixer
pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96114901A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0768113A1 (de
Inventor
Theodor Günther
Wolfgang Dr. Perbix
Günther Schneider
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.)
Dyckerhoff GmbH
Original Assignee
Dyckerhoff GmbH
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 Dyckerhoff GmbH filed Critical Dyckerhoff GmbH
Publication of EP0768113A1 publication Critical patent/EP0768113A1/de
Application granted granted Critical
Publication of EP0768113B1 publication Critical patent/EP0768113B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B28C5/04—Gravitational mixing; Mixing by intermingling streams of ingredients
    • 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
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
    • B01F25/3121—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements
    • 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
    • B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
    • B01F25/53—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle in which the mixture is discharged from and reintroduced into a receptacle through a recirculation tube, into which an additional component is introduced
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/90—Heating or cooling systems
    • B01F35/92—Heating or cooling systems for heating the outside of the receptacle, e.g. heated jackets or burners
    • 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
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing

Definitions

  • Fine cements / fine binders are increasingly used in the fields Concrete repair and geotechnical engineering used. Serve those made from the finest cements / finest binders Cement suspensions for filling cracks in concrete, cracks and Fissures in rock and pore spaces in loose rock.
  • Fine cements are very fine-grained hydraulic binders steady and closely graded grain distributions and a limitation of the largest grain.
  • the properties and use of fine cements is regulated, e.g. in a preliminary leaflet for Pressing in with fine binders in loose rock (construction technology 70, [1993], Issue 9, Ernst & Sohn, pages 550 to 560, and ZTV-RISS 93, Verlidblatt document B 5237, fixtureblatt-Verlag).
  • the terminology in the two known sets of rules is not uniformly.
  • the term "ultra-fine binder” is used in the leaflet and in the ZTV-RISS the term "fine cement” is used.
  • the American literature speaks of microfine Portland cement (U.S. Patent 5,106,423).
  • the fine cement should be used Manufacture of cement suspensions with a sieve of ⁇ 95 % with a mesh size of 16 ⁇ m (0.016 mm) and with suitable additives and additives.
  • the Terms and content of the ingredients additives and Additives are in cement leaflet No. B 3, BBD / KA 1.93 / 20 Are defined.
  • EP 0 498 279 describes a device for processing and Pressing a cement suspension known to a preparation area and has a pressing area.
  • the processing area and the pressing area are with a connecting line connected to each other and they each have a container a circuit line and a pump with which the cement suspension is circulated for preparation or grouting can be.
  • This document teaches that in the circulation line a strainer is inserted in the processing area and the containers are each filled with a coolant Cooling device are surrounded. A lump should pass through the sieve can be prevented because the suspension with a relatively high Pressure is pressed through the sieve, being in suspension Lumps are cut up.
  • the device for carrying out the mixing process has one Weighing and mixing container on, of which in the weighing and mixing container liquid in a centrifugal pump can be pumped in a first circuit.
  • a second circuit in which a venturi mixing nozzle is arranged.
  • the second circuit opened and this premixing through a Venturi mixing nozzle guided.
  • a venturi mixing nozzle By means of this venturi mixing nozzle now a dry component is added to the premix and again pumped into the mixing tank. If a desired amount of solid has been supplied in this way, the venturi mixing nozzle circuit closed again and the mixture for further Homogenization returned to the first mixing cycle. Finally, a valve in the first mixing circuit is opened and the content of the mixing tank by means of the centrifugal pump in pumped a reservoir.
  • the invention has for its object a method for the production of fine cement-hydraulic fine binder suspensions with a sieve size greater than or equal to 95% at one Specify a mesh size of 16 ⁇ m, with no clumping of the material to be processed Materials like when using high or low speed Mixer occurs and for fine cement fine binder Commonly used dry powder additives are optimally open-minded, therefore a total lump-free suspension is obtained.
  • the subject of the invention is therefore a process for the preparation of fine cement hydraulic fine binder suspensions, in which in a closed circuit first in a storage container 1 a quantity of water corresponding to a given recipe submitted and via a pump 2 to a venturi principle working mixer 3, such as a water jet pump, pumped is, the water flowing through the mixer 3 generated negative pressure the fine cement the fine binder from a Mixer 3 arranged container 4 to form a suspension-like Mixes sucked in and this suspension to the reservoir 1 transported, with a stirring device 5 is stirred, and then the suspension by means of the pump 2 returned to the circuit at least once and after Completion of a specified preparation at an acceptance point 6 is removed from the circuit.
  • a venturi principle working mixer 3 such as a water jet pump
  • Another object of the invention is the use of a device for Carrying out the above-mentioned procedure comprehensively a storage container 1 for water, optionally additives for the ultra-fine cement, the ultra-fine binder a transport line 7a from Storage container 1 to a downstream of the storage container 1 Pump 2, another transport line 7b from pump 2 to a mixer 3 operating according to the Venturi principle, such as one Water jet pump on which a container 4 for the addition of the Feinstzements / Feinstbindeffens is provided, a further transport line 7c of the mixer 3 to the reservoir 1, and by one with the Pump 2 connected via a transport line 7d Tapping point 6, the arrangement of storage container 1, Pump 2 and mixer 3 is such that these via the transport lines 7 are cyclically connected in series.
  • the device shown in FIG. 1 for producing the fine cement / fine binder suspensions comprises a storage container 1 provided with an agitator 5, which can be charged with water and optionally with additives and / or additives customary for the fine cement.
  • Transport lines 7a and 7b lead from the storage container 1 to the pump 2 and further to a mixer 3 which works according to the Venturi principle, such as a water jet pump, which is equipped with a container 4, via which the fine cement / fine binder is added. Due to the negative pressure generated in the mixer 3, the ultrafine cement / ultrafine binder is sucked out of the container 4 into the water flowing through the mixer 3 to form a suspension-like mixture and is transported again to the storage container 1 via the transport line 7c.
  • the suspension can now be pumped from the storage container 1 again at least once to the mixer 3 by means of the pump 2 and mixed with further fine cement / ultra-fine binder and is then pumped back again to the storage container 1, this process also being repeatable until a desired water: cement Ratio is set and the additives in the suspension are optimally distributed and digested.
  • Fine cement / fine binder suspension for example at Filling cracks or crevices and fissures in the rock is according to an advantageous embodiment depending on the outside temperature of the storage container (1) by means of a heating or Cooling device can be heated or cooled, so that the fine cement / fine binder suspension to an exact optimal Temperature range is adjustable.
  • the storage container 1 for example at high Summer temperatures can be cooled or heated, though the suspension is processed in the cool rock to ensure optimal Ensure solidification in the rock.
  • the device makes it possible to be robust, extremely easy to handle simple and inexpensive mixing units for site-specific Provide application without relying on the high mixing Requirements for fine cement suspensions and fine binders to renounce.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Dispersion Chemistry (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Accessories For Mixers (AREA)
EP96114901A 1995-10-11 1996-09-17 Verfahren zur Herstellung von Feinstzement-/Feinstbindemittelsuspensionen Expired - Lifetime EP0768113B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19537874 1995-10-11
DE19537874A DE19537874C2 (de) 1995-10-11 1995-10-11 Verfahren und Vorrichtung zur Herstellung von Feinstzement-/Feinstbindemittelsuspensionen

Publications (2)

Publication Number Publication Date
EP0768113A1 EP0768113A1 (de) 1997-04-16
EP0768113B1 true EP0768113B1 (de) 2003-04-02

Family

ID=7774595

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96114901A Expired - Lifetime EP0768113B1 (de) 1995-10-11 1996-09-17 Verfahren zur Herstellung von Feinstzement-/Feinstbindemittelsuspensionen

Country Status (10)

Country Link
EP (1) EP0768113B1 (cs)
AT (1) ATE235953T1 (cs)
CZ (1) CZ290796A3 (cs)
DE (2) DE19537874C2 (cs)
ES (1) ES2107986T1 (cs)
HU (1) HUP9602643A3 (cs)
NO (1) NO307550B1 (cs)
PL (1) PL184282B1 (cs)
SI (1) SI9600291A (cs)
SK (1) SK127396A3 (cs)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2134637C1 (ru) * 1998-01-13 1999-08-20 Трифонов Юрий Петрович Устройство для аэрации строительных растворов
DE10010287B4 (de) * 2000-02-25 2004-02-12 Infineon Technologies Ag Verfahren zur Herstellung von flüssigen Gemischen für das chemisch-mechanische Polieren von Wafern
DE10037118A1 (de) * 2000-07-28 2002-02-14 Univ Clausthal Tech Verfahren zur Herstellung eines Quellzements und zugehörige Testvorrichtung
WO2005000454A1 (en) * 2003-06-27 2005-01-06 Mmd Design & Consultancy Limited Apparatus and method for mixing particulate material with a fluid to form a pumpable slurry
EP1745840A1 (en) * 2005-07-22 2007-01-24 Services Petroliers Schlumberger Apparatus and method for mixing a liquid material and a flowable powdery material to obtain a slurry
GB201020923D0 (en) * 2010-12-09 2011-01-26 Akzo Nobel Coatings Int Bv An assembly
DE102011119816B4 (de) * 2011-12-01 2015-08-27 Sartorius Stedim Biotech Gmbh System und Verfahren zur Zellabtrennung
FI125394B (fi) 2012-04-27 2015-09-30 S T Ritvanen Oy Menetelmä raemaisen kiintoaineen hienojakoiseksi syöttämiseksi nesteeseen
CN111173286B (zh) * 2020-03-02 2021-08-24 广东博智林机器人有限公司 送料装置及开补槽机器人
CN112430857A (zh) * 2020-11-25 2021-03-02 浙江炜烨晶体纤维有限公司 一种多晶莫来石纤维喷丝用的压力锅

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007921A (en) * 1976-01-19 1977-02-15 The Dow Chemical Company Apparatus for mixing dry particles with a liquid
US4186772A (en) * 1977-05-31 1980-02-05 Handleman Avrom Ringle Eductor-mixer system
ZA823019B (en) * 1981-05-04 1983-06-29 Terra Tek Inc Roof bolt grouting system
DE3409840A1 (de) * 1984-03-17 1985-09-19 International Intec Co. Establishment, Vaduz Vorrichtung zum injizieren von injektionsmassen in vorgebohrte aufnahmeloecher
JP2681813B2 (ja) * 1988-11-09 1997-11-26 クニミネ工業株式会社 分散液調製装置
US4863277A (en) * 1988-12-22 1989-09-05 Vigoro Industries, Inc. Automated batch blending system for liquid fertilizer
JPH04141226A (ja) * 1990-09-29 1992-05-14 Hisaka Works Ltd 混合タンクへの粉体の供給混合装置
DE4103475A1 (de) * 1991-02-06 1992-08-20 Roedl Gmbh Vorrichtung zum aufbereiten und verpressen einer zementsuspension
DE4105404A1 (de) * 1991-02-21 1992-08-27 Bernd Dipl Ing Thier Heiz- und kuehlkreislauf
DE9105601U1 (de) * 1991-05-06 1991-06-13 Süd-Chemie AG, 8000 München Dispergieranlage
DE4313721C2 (de) * 1993-04-27 1995-11-23 Werner Prof Dr Ing Moeller Verfahren und Vorrichtung zum Vermischen einer Flüssigkeit mit einem dispersen Feststoff, insbesondere mit einem agglomerierenden Feststoff

Also Published As

Publication number Publication date
NO307550B1 (no) 2000-04-25
ATE235953T1 (de) 2003-04-15
HU9602643D0 (en) 1996-11-28
SI9600291A (en) 1997-08-31
SK127396A3 (en) 1997-08-06
ES2107986T1 (es) 1997-12-16
HUP9602643A3 (en) 1999-05-28
DE19537874C2 (de) 1997-10-23
CZ290796A3 (en) 1997-04-16
NO963801L (no) 1997-04-14
EP0768113A1 (de) 1997-04-16
HUP9602643A2 (hu) 1999-04-28
PL184282B1 (pl) 2002-09-30
NO963801D0 (no) 1996-09-11
DE59610293D1 (de) 2003-05-08
DE19537874A1 (de) 1997-04-17
PL316464A1 (en) 1997-04-14

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