EP0210294A1 - Procédé et dispositif de préparation de suspensions à caractéristiques constantes provenant d'éléments à propriétés variables - Google Patents

Procédé et dispositif de préparation de suspensions à caractéristiques constantes provenant d'éléments à propriétés variables Download PDF

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Publication number
EP0210294A1
EP0210294A1 EP85109553A EP85109553A EP0210294A1 EP 0210294 A1 EP0210294 A1 EP 0210294A1 EP 85109553 A EP85109553 A EP 85109553A EP 85109553 A EP85109553 A EP 85109553A EP 0210294 A1 EP0210294 A1 EP 0210294A1
Authority
EP
European Patent Office
Prior art keywords
suspension
constant
additives
mixing
ball mill
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.)
Granted
Application number
EP85109553A
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German (de)
English (en)
Other versions
EP0210294B1 (fr
Inventor
Reinhard Dr. Klose
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.)
SALZGITTER ANLAGENBAU ZWEIGNIEDERLASSUNG DER PREUS
Original Assignee
Salzgitter Anlagenbau Zweigniederlassung der Preussag Anlagenbau GmbH
Salzgitter Industriebau 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8193653&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0210294(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Salzgitter Anlagenbau Zweigniederlassung der Preussag Anlagenbau GmbH, Salzgitter Industriebau GmbH filed Critical Salzgitter Anlagenbau Zweigniederlassung der Preussag Anlagenbau GmbH
Priority to EP85109553A priority Critical patent/EP0210294B1/fr
Priority to DE8585109553T priority patent/DE3563310D1/de
Priority to US06/840,445 priority patent/US4706892A/en
Priority to CA000504668A priority patent/CA1294263C/fr
Priority to ZA865440A priority patent/ZA865440B/xx
Priority to AU60475/86A priority patent/AU576092B2/en
Priority to JP61176833A priority patent/JPS6249942A/ja
Publication of EP0210294A1 publication Critical patent/EP0210294A1/fr
Publication of EP0210294B1 publication Critical patent/EP0210294B1/fr
Application granted granted Critical
Expired legal-status Critical Current

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Classifications

    • 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
    • B01F35/20—Measuring; Control or regulation
    • B01F35/22—Control or regulation
    • B01F35/2201—Control or regulation characterised by the type of control technique used
    • B01F35/2209—Controlling the mixing process as a whole, i.e. involving a complete monitoring and controlling of the mixing process during the whole mixing cycle
    • 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
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/82—Forming a predetermined ratio of the substances to be mixed by adding a material to be mixed to a mixture in response to a detected feature, e.g. density, radioactivity, consumed power or colour
    • 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

Definitions

  • the invention relates to a method for producing particularly highly concentrated, fine-grained suspensions with constant characteristics from raw materials with variable properties.
  • a suspension contains, for example, fine-grained coal or fine-grained mineral and a liquid carrier. It can be used to transport the fine-grained substances in pipes or to store them in containers and to feed the solids to an application.
  • the solids to be introduced into the suspension have changing moisture contents and other properties.
  • the respective hardness of the raw material can have an influence on which grain sizes occur during the crushing to be provided.
  • the liquid carrier also influences the characteristics of the suspension if e.g. its temperature or salinity changes.
  • Such suspensions are usually admixed with additives which can also have an influence on the characteristics of the suspension.
  • the additives are selected according to the use of the suspensions and can be surfactants, defoamers, stabilizers, biocides, etc.
  • coarser solid parts are subjected to a comminution and mixing process together with a liquid carrier such as water or methanol and with the additives.
  • a liquid carrier such as water or methanol
  • the characteristics of the suspension produced here are checked. If the tested values differ from the target values as a result of changing properties of the raw materials, the comminution process and / or the composition of the raw materials fed into the process are changed.
  • the moisture content of the pre-comminuted solids supplied is preferably also determined and the amount of carrier to be added is adjusted accordingly.
  • Preliminary shredding for example with coal in a roller mill, to a grain size of max. 6 mm, preferably of max. 4 mm is appropriate.
  • the solid parts are further increased to max. 0.2 mm crushed, with it being preferred that at least two One third of the mass of the fine-grained solid particles produced has a grain size of at most 0.1 mm.
  • Such a suspension which can consist of 65-75% of its mass of solid particles, can also be pumped over a greater distance in a pipeline.
  • the total amount of additives in a suspension is usually up to about 0.6% of the mass, depending on the effects expected from the additives. It has been found that the viscosity of the suspension can be influenced by suitable selection of known additives and, if appropriate, increasing their proportion up to about 1%, without the expected effects of the additives being impaired.
  • the choice of the type, amount and mixture of the additives therefore makes it possible to keep the viscosity of the suspension constant if it begins to deviate from a predetermined value due to any influences such as, for example, a change in the particle size of the solid particles or a change in the liquid content the suspension is preferably produced and released continuously.
  • the crushing process can also be influenced. This allows the suspension with constant characteristics to be produced by two overlapping control mechanisms.
  • a ball mill is preferred as the mixing and comminuting device. This contains balls, the diameter of which decrease with increasing degree of comminution. By changing the number of revolutions of the ball mill, the grain size of the emerging solid particles can be influenced at constant throughput.
  • Coarse solid particles, carrier liquid and additives are fed into the ball mill via an inlet.
  • the treatment of these raw materials in the ball mill leads to an intensive mixing and the formation of the solid-liquid suspension.
  • the viscosity of the suspension and the grain sizes available are determined by taking and examining samples. If the continuously determined values deviate from specified target values, a correction can be made by changing the proportions of the imported raw materials including the composition of the additives and the speed of the ball mill.
  • the suspension can be checked automatically by means of suitable known devices, and automatic control of the suspension production is possible via a computer program.
  • Pre-broken coal arrives from a feed hopper 1 on a dosing belt scale 2 and falls from it into the inlet 3 of a ball mill 4.
  • the inlet 5 also opens into the inlet 3 for the water serving as carrier liquid.
  • Various additives or additive mixtures can be fed into the inlet 3 via lines 6, 7, 8.
  • the ball mill 4 is classified, ie it consists of several departments with balls of different sizes, which are only indicated in the drawing.
  • the suspension of fine solid particles and water and additives produced in the ball mill flows through the outlet 9 to a pump sump 10 and is pressed from here into a delivery line 12 by means of a pump 11.
  • the viscosity of the suspension can be determined using a suitable measuring device 13, such as the propeller 14 shown.
  • Grain sizes and composition of the solid particles are determined by means of an optical test device 15 at in kur zen intervals determined via a sampling probe 16 samples taken from the outlet 9.
  • the suspension in the partial flow is diluted with water until it is translucent and then flows through the measuring cell of a particle size analyzer.
  • the measuring cell for example, the light of a laser is scattered and reflected on the particles and registered by optical pickups, the measured values of which are compared in a computer 17 with target values. If a change in the particle sizes is necessary, the drive 18 of the ball mill 4 is influenced by the computer 17 so that it changes its speed at a constant throughput.
  • a deviation in the suspension viscosity from a predetermined value is also corrected by the computer 17.
  • the type and / or amount of the additives is set via controllable valves 18, 19, 20 in the lines 6, 7, 8.
  • a change in the moisture content of the coal supplied is determined on the belt scale 2 by a moisture meter 23, for example by means of infrared rays. If the coal moisture content changes, the belt scale speed is corrected.
  • the supply of water is adjusted by adjusting the control valve 21 in the feed line 5.
  • the amount of water added is determined by a flow meter 22.
  • a quantity of suspension of 5 t / h is to be continuously produced and fed into the delivery line 12 at constant pressure.
  • a uniform conveyance requires a constant toughness.
  • the suspension to be dispensed should have a constant coal content of 70% with a grain size up to max. 0.2 mm, but mostly less than 0.1 mm. These characteristics must remain constant so that the suspension can be burned in a burner, for example.
  • the viscosity can therefore be controlled according to a suitable computer program by controlling one or more of the valves 18, 19, 20 for the additives are corrected so that the target value of the toughness is maintained.
  • the system shown with the monitoring and control directions thus creates the possibility of producing a highly concentrated suspension with characteristics that are constant at least with regard to the concentration of the core sizes and the toughness, even when the properties of the base materials change.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Crushing And Grinding (AREA)
  • Liquid Carbonaceous Fuels (AREA)
  • Disintegrating Or Milling (AREA)
  • Colloid Chemistry (AREA)
EP85109553A 1985-07-30 1985-07-30 Procédé et dispositif de préparation de suspensions à caractéristiques constantes provenant d'éléments à propriétés variables Expired EP0210294B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP85109553A EP0210294B1 (fr) 1985-07-30 1985-07-30 Procédé et dispositif de préparation de suspensions à caractéristiques constantes provenant d'éléments à propriétés variables
DE8585109553T DE3563310D1 (en) 1985-07-30 1985-07-30 Method and device for the preparation of suspensions with constant indications from basic materials with variable properties
US06/840,445 US4706892A (en) 1985-07-30 1986-03-17 Method and system for the preparation of a highly concentrated mineral slurry having substantially constant identifying characteristics
CA000504668A CA1294263C (fr) 1985-07-30 1986-03-20 Methode et systeme de preparation de suspension homogene a concentration elevee de fines particules
ZA865440A ZA865440B (en) 1985-07-30 1986-07-22 Method and system for preparation of highly concentrated and fine-grained suspension having constant characteristic features
AU60475/86A AU576092B2 (en) 1985-07-30 1986-07-23 Preparation of coal water slurry
JP61176833A JPS6249942A (ja) 1985-07-30 1986-07-29 一定の特性を有する高濃度微粒子懸濁液の調製方法ならびにシステム

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP85109553A EP0210294B1 (fr) 1985-07-30 1985-07-30 Procédé et dispositif de préparation de suspensions à caractéristiques constantes provenant d'éléments à propriétés variables

Publications (2)

Publication Number Publication Date
EP0210294A1 true EP0210294A1 (fr) 1987-02-04
EP0210294B1 EP0210294B1 (fr) 1988-06-15

Family

ID=8193653

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85109553A Expired EP0210294B1 (fr) 1985-07-30 1985-07-30 Procédé et dispositif de préparation de suspensions à caractéristiques constantes provenant d'éléments à propriétés variables

Country Status (7)

Country Link
US (1) US4706892A (fr)
EP (1) EP0210294B1 (fr)
JP (1) JPS6249942A (fr)
AU (1) AU576092B2 (fr)
CA (1) CA1294263C (fr)
DE (1) DE3563310D1 (fr)
ZA (1) ZA865440B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996026002A1 (fr) * 1995-02-24 1996-08-29 Exxon Chemical Patents Inc. Systeme et procede de melange d'additifs
CN104609209A (zh) * 2015-01-31 2015-05-13 衢州妙凯节能科技有限公司 一种钢球传输机

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6136398A (ja) * 1984-07-30 1986-02-21 Babcock Hitachi Kk 高濃度石炭・水スラリ製造方法
DE4129408C1 (fr) * 1991-09-04 1992-10-22 Chemische Betriebe Pluto Gmbh, 4690 Herne, De
JPH0569784U (ja) * 1991-12-28 1993-09-21 センチュリーメディカル株式会社 診療装置における表示装置
US20080202415A1 (en) * 2007-02-28 2008-08-28 David Paul Miller Methods and systems for addition of cellulose ether to gypsum slurry
WO2013026176A1 (fr) * 2011-08-19 2013-02-28 General Electric Company Système et procédé de chauffage d'une suspension de combustible
US10569279B2 (en) * 2013-02-28 2020-02-25 Outotec (Finland) Oy Method of controlling a grinding mill process
CN117839853A (zh) * 2024-01-23 2024-04-09 广州烯湾氢能科技有限公司 一种砂磨机浆料研磨控制方法及装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1238408A (fr) * 1969-07-03 1971-07-07
DE2019696A1 (de) * 1970-04-23 1971-11-11 Supraton Bruchmann & Zucker Kg Verfahren und Vorrichtung zur Herstellung einer Dispersion bzw.Loesung aus zerkleinerten Feststoffen und einem Dispersionsmedium bzw.Loesungsmittel
GB1475474A (en) * 1975-10-09 1977-06-01 Continental Oil Co Method and apparatus for hydraulically transporting solids
DE2929430C2 (de) * 1979-07-20 1981-10-01 Stahlwerke Peine-Salzgitter Ag, 3150 Peine Verfahren und Einrichtung zur Analyse des Feststoffanteils in einem hydraulischen Förderstrom aus Feststoffteilchen und einer Trägerflüssigkeit
US4397561A (en) * 1981-05-11 1983-08-09 William A. Strong Slurry production system

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US2824701A (en) * 1952-11-21 1958-02-25 Smidth & Co As F L Method of and apparatus for multiple stage wet grinding
US3255975A (en) * 1963-04-24 1966-06-14 Youngstown Sheet And Tube Co Moisture content control apparatus for continuously produced material
US3351293A (en) * 1965-08-23 1967-11-07 Kaiser Ind Corp Grinding mill and method of operation
DE1526174A1 (de) * 1965-11-06 1970-03-19 Bergwerksverband Gmbh Verfahren zur Herstellung einer brennfertigen Kohle-Wasser-Suspension
AU6859374A (en) * 1974-05-03 1975-11-06 Keller L J Fuel composition
GB1523868A (en) * 1974-11-01 1978-09-06 Shell Int Research Method for the slurry transport and upgrading of coal
DE2836440A1 (de) * 1978-08-19 1980-03-06 Ruhrchemie Ag Verfahren zur herstellung einer kohle- wasser-suspension, die zum einsatz in eine kohlevergasung unter erhoehtem druck geeignet ist
US4441887A (en) * 1981-07-31 1984-04-10 Alfred University Research Foundation Inc. Stabilized slurry and process for preparing same
US4416666A (en) * 1979-10-26 1983-11-22 Alfred University Research Foundation Inc. Coal-water slurry and method for its preparation
US4479806A (en) * 1978-11-02 1984-10-30 Alfred University Research Foundation, Inc. Stabilized slurry and process for preparing same
US4282006A (en) * 1978-11-02 1981-08-04 Alfred University Research Foundation Inc. Coal-water slurry and method for its preparation
DE3121979A1 (de) * 1981-06-03 1982-12-23 Ruhrchemie Ag, 4200 Oberhausen Kohle-wasser-suspensionen, verfahren zu ihrer herstellung ind ihre verwendung
US4494959A (en) * 1981-07-31 1985-01-22 Alfred University Research Foundation, Inc. Coal-water slurry and method for its preparation
SU1011262A1 (ru) * 1981-12-29 1983-04-15 Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Институт По Автоматизации Предприятий Промышленности Строительных Материалов Способ управлени процессом мокрого помола в барабанной мельнице
US4477259A (en) * 1982-05-05 1984-10-16 Alfred University Research Foundation, Inc. Grinding mixture and process for preparing a slurry therefrom
US4526584A (en) * 1982-05-05 1985-07-02 Alfred University Research Foundation, Inc. Process for pumping a carbonaceous slurry
US4468232A (en) * 1982-05-05 1984-08-28 Alfred University Research Foundation, Inc. Process for preparing a clean coal-water slurry
US4477260A (en) * 1982-05-05 1984-10-16 Alfred University Research Foundation, Inc. Process for preparing a carbonaceous slurry
JP3493037B2 (ja) * 1991-12-18 2004-02-03 中外製薬株式会社 ２２−オキサコレカルシフェロール誘導体とその製造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1238408A (fr) * 1969-07-03 1971-07-07
GB1238407A (fr) * 1969-07-03 1971-07-07
DE2019696A1 (de) * 1970-04-23 1971-11-11 Supraton Bruchmann & Zucker Kg Verfahren und Vorrichtung zur Herstellung einer Dispersion bzw.Loesung aus zerkleinerten Feststoffen und einem Dispersionsmedium bzw.Loesungsmittel
GB1475474A (en) * 1975-10-09 1977-06-01 Continental Oil Co Method and apparatus for hydraulically transporting solids
DE2929430C2 (de) * 1979-07-20 1981-10-01 Stahlwerke Peine-Salzgitter Ag, 3150 Peine Verfahren und Einrichtung zur Analyse des Feststoffanteils in einem hydraulischen Förderstrom aus Feststoffteilchen und einer Trägerflüssigkeit
US4397561A (en) * 1981-05-11 1983-08-09 William A. Strong Slurry production system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996026002A1 (fr) * 1995-02-24 1996-08-29 Exxon Chemical Patents Inc. Systeme et procede de melange d'additifs
US5993054A (en) * 1995-02-24 1999-11-30 Exxon Chemical Patents, Inc. System and method for continuously and simultaneously injecting two or more additives into a main stream of oleaginous liquid
CN104609209A (zh) * 2015-01-31 2015-05-13 衢州妙凯节能科技有限公司 一种钢球传输机
CN104609209B (zh) * 2015-01-31 2016-09-28 衢州妙凯节能科技有限公司 一种钢球传输机

Also Published As

Publication number Publication date
JPS6249942A (ja) 1987-03-04
EP0210294B1 (fr) 1988-06-15
DE3563310D1 (en) 1988-07-21
US4706892A (en) 1987-11-17
AU6047586A (en) 1987-02-05
CA1294263C (fr) 1992-01-14
ZA865440B (en) 1987-03-25
AU576092B2 (en) 1988-08-11

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