NL1000091C2 - Sepn., grading and recombination of sand and gravel mixes - Google Patents

Sepn., grading and recombination of sand and gravel mixes

Info

Publication number
NL1000091C2
NL1000091C2 NL1000091A NL1000091A NL1000091C2 NL 1000091 C2 NL1000091 C2 NL 1000091C2 NL 1000091 A NL1000091 A NL 1000091A NL 1000091 A NL1000091 A NL 1000091A NL 1000091 C2 NL1000091 C2 NL 1000091C2
Authority
NL
Netherlands
Prior art keywords
sand
gravel
sepn
grading
recombination
Prior art date
Application number
NL1000091A
Other languages
Dutch (nl)
Inventor
Karsper Niels Ottervanger
Original Assignee
Dekker Zandbaggerbedrijf B V
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 Dekker Zandbaggerbedrijf B V filed Critical Dekker Zandbaggerbedrijf B V
Priority to NL1000091A priority Critical patent/NL1000091C2/en
Application granted granted Critical
Publication of NL1000091C2 publication Critical patent/NL1000091C2/en

Links

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
    • B01F35/21—Measuring
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D11/00—Control of flow ratio
    • G05D11/02—Controlling ratio of two or more flows of fluid or fluent material
    • G05D11/13—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means
    • G05D11/131—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring the values related to the quantity of the individual components
    • G05D11/132—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring the values related to the quantity of the individual components by controlling the flow of the individual components
    • 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
    • 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
    • B01F35/2203—Controlling the mixing process by feed-forward, i.e. a parameter of the components to be mixed is measured and the feed values are calculated
    • 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
    • B28C7/0007—Pretreatment of the ingredients, e.g. by heating, sorting, grading, drying, disintegrating; Preventing generation of dust
    • 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
    • B28C7/02—Controlling the operation of the mixing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)

Abstract

Equipment for initial sepn. and grading of sand and/or gravel particles prior to recombination to a desired compsn., comprising a collection device (I), e.g. a sand suction/vacuum unit or bucket system for pref. wet sand and/or gravel, a sepn. device (II) and a discharge unit (III). The collected material is first deposited onto a stationary sieve (2) where it is sepd. into two parts one having a particle size greater than 2 mm (W) and one less than 2 mm (O). The larger debris (8) e.g. clay, pieces of wood and particles greater than 8 mm is then sepd. out and e.g. disposed of. The sand and/or gravel streams are progressively graded into a number of particle streams (B,C,D,E) having size-ranges K = 2-8 mm, M1 = 1-2 mm, F1 = 0.25-1 mm, and F2 = 0.1-0.25 mm which are then collected in buffer stores (5,13,17,22). Measuring and dosing equipments (24,14,18,23) are used to supply the required particle sizes in the required quantities to belt conveyors (25,26) to achieve the required mix determined in the discharge unit (III) by the central control system (27).
NL1000091A 1995-04-07 1995-04-07 Sepn., grading and recombination of sand and gravel mixes NL1000091C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL1000091A NL1000091C2 (en) 1995-04-07 1995-04-07 Sepn., grading and recombination of sand and gravel mixes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1000091A NL1000091C2 (en) 1995-04-07 1995-04-07 Sepn., grading and recombination of sand and gravel mixes

Publications (1)

Publication Number Publication Date
NL1000091C2 true NL1000091C2 (en) 1996-10-08

Family

ID=19760853

Family Applications (1)

Application Number Title Priority Date Filing Date
NL1000091A NL1000091C2 (en) 1995-04-07 1995-04-07 Sepn., grading and recombination of sand and gravel mixes

Country Status (1)

Country Link
NL (1) NL1000091C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3241610A1 (en) * 2016-05-02 2017-11-08 Thomas Wöhrl Methods for determining relative content of fractions of bulk material in a mixture, consisting of components of different fractions for achieving a predetermined mix as regards the grain size of the bulk material

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE895119C (en) * 1941-11-01 1953-10-29 Hans Dr-Ing Lange Process and device for monitoring and regulating the grain size composition of the aggregates for concrete mixtures
GB1241878A (en) * 1969-03-25 1971-08-04 B Wohnungsbaukombinat Veb Method for obtaining the optimum utilization of the natural grain-size of sands and gravels for concrete production
SU993996A1 (en) * 1981-06-22 1983-02-07 Запорожский Филиал Всесоюзного Научно-Исследовательского И Конструкторского Института "Цветметавтоматика" Apparatus for automatic control of loose substances and binding mixture preparation process
NL8105887A (en) * 1981-12-29 1983-07-18 Linatex Nederland Bv Crude sand is classified and fractions stored in separate silos - with outlets metered to mix predetermined grain size distribution
JPS63166424A (en) * 1986-12-27 1988-07-09 Daiyu Kensetsu Kk Automatic particle size blend control device
EP0319070A1 (en) * 1987-11-19 1989-06-07 B.V. Grint- en Zandexploitatiemaatschappij v/h Gebrs. Smals An installation for extracting granular material in a predetermined composition and method for using that installation
DE4122062A1 (en) * 1991-07-03 1993-01-14 R & D Carbon Ltd Prepn. of dry material consisting of petroleum coke and electrode residues - for anodes for aluminium@ fusion analysis etc., using simple equipment ensuring accurate results
EP0550926A1 (en) * 1991-12-09 1993-07-14 B.V. Grint- en Zandexploitatiemaatschappij v/h Gebrs. Smals Method and installation for extracting and providing in desired composition granular material such as sand
EP0590891A1 (en) * 1992-09-28 1994-04-06 Shimadzu Corporation Method and apparatus for estimating a mixing proportion of different powdery contents

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE895119C (en) * 1941-11-01 1953-10-29 Hans Dr-Ing Lange Process and device for monitoring and regulating the grain size composition of the aggregates for concrete mixtures
GB1241878A (en) * 1969-03-25 1971-08-04 B Wohnungsbaukombinat Veb Method for obtaining the optimum utilization of the natural grain-size of sands and gravels for concrete production
SU993996A1 (en) * 1981-06-22 1983-02-07 Запорожский Филиал Всесоюзного Научно-Исследовательского И Конструкторского Института "Цветметавтоматика" Apparatus for automatic control of loose substances and binding mixture preparation process
NL8105887A (en) * 1981-12-29 1983-07-18 Linatex Nederland Bv Crude sand is classified and fractions stored in separate silos - with outlets metered to mix predetermined grain size distribution
JPS63166424A (en) * 1986-12-27 1988-07-09 Daiyu Kensetsu Kk Automatic particle size blend control device
EP0319070A1 (en) * 1987-11-19 1989-06-07 B.V. Grint- en Zandexploitatiemaatschappij v/h Gebrs. Smals An installation for extracting granular material in a predetermined composition and method for using that installation
DE4122062A1 (en) * 1991-07-03 1993-01-14 R & D Carbon Ltd Prepn. of dry material consisting of petroleum coke and electrode residues - for anodes for aluminium@ fusion analysis etc., using simple equipment ensuring accurate results
EP0550926A1 (en) * 1991-12-09 1993-07-14 B.V. Grint- en Zandexploitatiemaatschappij v/h Gebrs. Smals Method and installation for extracting and providing in desired composition granular material such as sand
EP0590891A1 (en) * 1992-09-28 1994-04-06 Shimadzu Corporation Method and apparatus for estimating a mixing proportion of different powdery contents

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 012, no. 444 (C - 545) 22 November 1988 (1988-11-22) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3241610A1 (en) * 2016-05-02 2017-11-08 Thomas Wöhrl Methods for determining relative content of fractions of bulk material in a mixture, consisting of components of different fractions for achieving a predetermined mix as regards the grain size of the bulk material

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Legal Events

Date Code Title Description
PD2B A search report has been drawn up
VD1 Lapsed due to non-payment of the annual fee

Effective date: 19991101