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WO2001076756A3 - Consistency determining method and system - Google Patents

Consistency determining method and system Download PDF

Info

Publication number
WO2001076756A3
WO2001076756A3 PCT/US2001/009321 US0109321W WO0176756A3 WO 2001076756 A3 WO2001076756 A3 WO 2001076756A3 US 0109321 W US0109321 W US 0109321W WO 0176756 A3 WO0176756 A3 WO 0176756A3
Authority
WO
WIPO (PCT)
Prior art keywords
consistency
refiner
determining
controller
setpoint
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/US2001/009321
Other languages
French (fr)
Other versions
WO2001076756A2 (en
Inventor
Ola M Johansson
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.)
J&L Fiber Services Inc
Original Assignee
J&L Fiber Services Inc
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 J&L Fiber Services Inc filed Critical J&L Fiber Services Inc
Priority to AU2001245956A priority Critical patent/AU2001245956A1/en
Priority to EP01918940A priority patent/EP1409143A2/en
Priority to NZ523180A priority patent/NZ523180A/en
Priority to CA002414944A priority patent/CA2414944A1/en
Publication of WO2001076756A2 publication Critical patent/WO2001076756A2/en
Publication of WO2001076756A3 publication Critical patent/WO2001076756A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/002—Control devices
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/20—Methods of refining
    • D21D1/30—Disc mills

Landscapes

  • Paper (AREA)
  • Hardware Redundancy (AREA)

Abstract

A system (30) and method for determining stock consistency and for using consistency as a process variable to control some aspect of operation of a refiner (32) used to refine stock. The system includes at least one sensor (70 or 180) from which some refiner characteristic is obtained that is used by a processor (38) in determining consistency. The method uses the characteristic, such as temperature or pressure inside the refiner or in a refining zone (304) of the refiner, along with at least one other refiner parameter in determining consistency. A controller (274) uses the consistency determined in controlling some aspect of refiner operation. In one preferred controller, consistency is compared with a consistency setpoint and adjustments are made to try to converge consistency with the setpoint. The controller can be paused to accommodate other changes made to refiner operation and released when steady state refiner operation is achieved.
PCT/US2001/009321 2000-04-09 2001-03-23 Consistency determining method and system Ceased WO2001076756A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU2001245956A AU2001245956A1 (en) 2000-04-09 2001-03-23 Consistency determining method and system
EP01918940A EP1409143A2 (en) 2000-04-09 2001-03-23 Consistency determining method and system
NZ523180A NZ523180A (en) 2000-04-09 2001-03-23 Consistency determining method and system, using parameter such as temperature
CA002414944A CA2414944A1 (en) 2000-04-09 2001-03-23 Consistency determining method and system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US19627900P 2000-04-09 2000-04-09
US60/196,279 2000-04-09

Publications (2)

Publication Number Publication Date
WO2001076756A2 WO2001076756A2 (en) 2001-10-18
WO2001076756A3 true WO2001076756A3 (en) 2002-02-21

Family

ID=22724729

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/009321 Ceased WO2001076756A2 (en) 2000-04-09 2001-03-23 Consistency determining method and system

Country Status (5)

Country Link
EP (1) EP1409143A2 (en)
AU (1) AU2001245956A1 (en)
CA (1) CA2414944A1 (en)
NZ (1) NZ523180A (en)
WO (1) WO2001076756A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ518111A (en) * 2002-06-09 2004-09-24 Metso Minerals Matamata Ltd Control system for a vertical shaft impactor (VSI) rock crusher to control the cascade ratio
SE537745C2 (en) 2013-11-04 2015-10-13 Daprox Ab Device for profile detection in refiner and method thereof
CN112285145A (en) * 2019-07-24 2021-01-29 天津工业大学 Method for quantitatively evaluating distribution uniformity degree of titanium powder added into zirconia slurry

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989000624A1 (en) * 1987-07-15 1989-01-26 Pertti Pietinen Method and apparatus for controlling the production of refined stock
US5011090A (en) * 1990-01-03 1991-04-30 Abb Stromberg Teollisuus Oy Method for controlling a chip refiner
US5011088A (en) * 1990-01-03 1991-04-30 Abb Stromberg Teollisuus Oy Control method for a chip refiner

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5425508A (en) 1994-02-17 1995-06-20 Beloit Technologies, Inc. High flow, low intensity plate for disc refiner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989000624A1 (en) * 1987-07-15 1989-01-26 Pertti Pietinen Method and apparatus for controlling the production of refined stock
US5011090A (en) * 1990-01-03 1991-04-30 Abb Stromberg Teollisuus Oy Method for controlling a chip refiner
US5011088A (en) * 1990-01-03 1991-04-30 Abb Stromberg Teollisuus Oy Control method for a chip refiner

Also Published As

Publication number Publication date
WO2001076756A2 (en) 2001-10-18
AU2001245956A1 (en) 2001-10-23
NZ523180A (en) 2005-08-26
CA2414944A1 (en) 2001-10-18
EP1409143A2 (en) 2004-04-21

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