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GB1168668A - Improvements in or relating to Apparatus and Process for Measuring the Degree of Deflocculation of a Suspension of Fine Particles. - Google Patents

Improvements in or relating to Apparatus and Process for Measuring the Degree of Deflocculation of a Suspension of Fine Particles.

Info

Publication number
GB1168668A
GB1168668A GB36220/67A GB3622067A GB1168668A GB 1168668 A GB1168668 A GB 1168668A GB 36220/67 A GB36220/67 A GB 36220/67A GB 3622067 A GB3622067 A GB 3622067A GB 1168668 A GB1168668 A GB 1168668A
Authority
GB
United Kingdom
Prior art keywords
compartments
centrifuge
deflocculation
disc
sample
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
Application number
GB36220/67A
Inventor
Archibald James Morcom
Kenneth John Burr
Terence Wilfred Webb
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.)
Imerys Minerals Ltd
Original Assignee
English Clays Lovering Pochin Co Ltd
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 English Clays Lovering Pochin Co Ltd filed Critical English Clays Lovering Pochin Co Ltd
Priority to GB36220/67A priority Critical patent/GB1168668A/en
Priority to US749507A priority patent/US3572930A/en
Priority to DE1773995A priority patent/DE1773995C3/en
Priority to FR1576145D priority patent/FR1576145A/fr
Publication of GB1168668A publication Critical patent/GB1168668A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N21/03—Cuvette constructions
    • G01N21/07—Centrifugal type cuvettes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/04—Investigating sedimentation of particle suspensions
    • G01N15/042—Investigating sedimentation of particle suspensions by centrifuging and investigating centrifugates

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Dispersion Chemistry (AREA)
  • Centrifugal Separators (AREA)
  • Optical Measuring Cells (AREA)

Abstract

1,168,668. Centrifugal separators. ENGLISH CLAYS LOVERING ,POCHIN & CO. Ltd. 1 Aug., 1968 [7 Aug., 1967], No. 36220/ 67. Heading B2P. [Also in Divisions G1 and G3] A centrifuge for measuring the deflocculation of a clay suspension comprises two compartments having windows for the passage of light through the compartments and photoelectric means for comparing the optical density of material in the compartments. The centrifuge comprises a flat disc 2 and a disc 1 recessed to form the compartments A, B. The discs are held together by hydraulic cylinders 10 fixed to disc 2 and having pistons 17 connected to disc 1 by a frame 16 and posts 15. Hydraulic fluid is supplied through conduits 18, 19, 20, and when the supply is cut off springs 11 separate discs 1 and 2 to eject the material in the compartments. Truncated concentric cones 4, 5 communicate with the respective compartments to permit filling while the centrifuge is running. Each compartment has windows 6, 7 and a pair of photocells 8 and a ring of lamps is arranged above the windows 6. Deflocculation control. A stream of clay suspension to which has been added deflocculant is sampled and the sample split into two. Sufficient deflocculant is added to one portion to completely deflocculate it and the portions are fed to the centrifuge compartments. A self-balancing bridge circuit includes one of the cells 8 under each of the compartments. The other photocell under the completely deflocculated portion of the sample is a control photocell which varies the lamp brightness to maintain the light intensity on the photocells under the completely deflocculated portion substantially constant. After centrifuging for a time determined in accordance with the initial solids concentration by the control photocell, the position of the balance element of the bridge indicates the optical density ratio of the two sample portions which ratio depends on the deflocculation of the sample. The measured value is recorded and compared with a desired value to produce an error signal to drive a motor controlling the setting of a valve in the deflocculant supply to the main suspension stream. The centrifuge is then emptied and washed with water several times.
GB36220/67A 1967-08-07 1967-08-07 Improvements in or relating to Apparatus and Process for Measuring the Degree of Deflocculation of a Suspension of Fine Particles. Expired GB1168668A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB36220/67A GB1168668A (en) 1967-08-07 1967-08-07 Improvements in or relating to Apparatus and Process for Measuring the Degree of Deflocculation of a Suspension of Fine Particles.
US749507A US3572930A (en) 1967-08-07 1968-08-01 Apparatus for measuring the degree of delocculation of a suspension of fine particles
DE1773995A DE1773995C3 (en) 1967-08-07 1968-08-06 Method and device for measuring the degree of deflocculation of a suspension
FR1576145D FR1576145A (en) 1967-08-07 1968-08-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB36220/67A GB1168668A (en) 1967-08-07 1967-08-07 Improvements in or relating to Apparatus and Process for Measuring the Degree of Deflocculation of a Suspension of Fine Particles.

Publications (1)

Publication Number Publication Date
GB1168668A true GB1168668A (en) 1969-10-29

Family

ID=10386088

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36220/67A Expired GB1168668A (en) 1967-08-07 1967-08-07 Improvements in or relating to Apparatus and Process for Measuring the Degree of Deflocculation of a Suspension of Fine Particles.

Country Status (4)

Country Link
US (1) US3572930A (en)
DE (1) DE1773995C3 (en)
FR (1) FR1576145A (en)
GB (1) GB1168668A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2055891A5 (en) * 1969-08-05 1971-05-14 Anvar
USRE28940E (en) * 1971-10-12 1976-08-24 Komline-Sanderson Engineering Corporation Method and apparatus for agglomeration measuring and control
US3723712A (en) * 1971-10-12 1973-03-27 Komline Sanderson Eng Corp Method for agglomeration measuring and control
IT1044259B (en) * 1975-03-21 1980-03-20 Tropea M DEVICE FOR CLASSIFYING THE GRANULOMETRY OF ANY DUSTY SUBSTANCE THROUGH CENTRIFUGATION
GB1575726A (en) * 1977-05-09 1980-09-24 Alcan Res & Dev Method and apparatus for particle size analysis
FR2460896A1 (en) * 1979-07-13 1981-01-30 Omnium Assainissement METHOD AND DEVICE FOR CONTINUOUSLY CONTROLLING THE COAGULATION-FLOCCULATION OF PARTICLES SUSPENDED IN A LIQUID
US4495800A (en) * 1982-11-15 1985-01-29 Nl Industries, Inc. Method for determining optimum concentration of hydration inhibitor for clays in drilling fluids
US4628204A (en) * 1984-08-16 1986-12-09 S.A. Texaco Belgium N.V. Optical method to study the stability of colloidal systems
EP0468693A3 (en) * 1990-07-24 1992-05-27 Beckman Instruments, Inc. Self-compensating seal in a centrifugal field
WO2016160974A1 (en) * 2015-04-01 2016-10-06 Weatherford Technology Holdings, Llc Centrifuge having onboard imaging system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2981630A (en) * 1951-04-26 1961-04-25 Georgia Kaolin Co Clay products and fractionation treatment of heterogeneous aggregates such as clay
GB812309A (en) * 1956-03-14 1959-04-22 Beckman Instruments Inc Improvements in or relating to centrifuging
US3009388A (en) * 1957-12-30 1961-11-21 American Optical Corp Apparatus for determining fluid fractions and sedimentataion rates

Also Published As

Publication number Publication date
FR1576145A (en) 1969-07-25
DE1773995C3 (en) 1980-05-29
US3572930A (en) 1971-03-30
DE1773995A1 (en) 1971-11-25
DE1773995B2 (en) 1979-09-13

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