GB1120219A - Grinding method - Google Patents

Grinding method

Info

Publication number
GB1120219A
GB1120219A GB1430167A GB1430167A GB1120219A GB 1120219 A GB1120219 A GB 1120219A GB 1430167 A GB1430167 A GB 1430167A GB 1430167 A GB1430167 A GB 1430167A GB 1120219 A GB1120219 A GB 1120219A
Authority
GB
United Kingdom
Prior art keywords
particles
grinding medium
drum
suspension
free
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
GB1430167A
Inventor
Daniel Andrew Jacobs
James Benjamin Duke
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.)
Minerals and Chemicals Philipp Corp
Original Assignee
Minerals and Chemicals Philipp Corp
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 Minerals and Chemicals Philipp Corp filed Critical Minerals and Chemicals Philipp Corp
Priority to GB1430167A priority Critical patent/GB1120219A/en
Publication of GB1120219A publication Critical patent/GB1120219A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/11—High-speed drum mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/0012—Devices for disintegrating materials by collision of these materials against a breaking surface or breaking body and/or by friction between the material particles (also for grain)
    • B02C19/005—Devices for disintegrating materials by collision of these materials against a breaking surface or breaking body and/or by friction between the material particles (also for grain) the materials to be pulverised being disintegrated by collision of, or friction between, the material particles

Abstract

Micron-sized particles are reduced by partially filling a baffle-free, agitator-free, smooth-inner-surfaced cylindrical drum with a fluid suspension of particles, liquid and particulate grinding medium of size - 4+35 mesh. There is sufficient liquid to form a slip. The drum is continuously rotated about its horizontal axis at less than critical speed, so that the suspension occupies only the lower portion of the drum. The individual particles of grinding medium travel in continuous generally elliptical paths within the suspension. The density of the grinding medium is greater than that of the particles to be ground, and may comprise 1/32 inch steel balls or shot. Materials to be ground include calcined kaolin clay, limestone, talc, with additives, e.g. sodium silicate, and to reduce iron pick-up by the clay a high pH solution is used. This may include tetrasodium pyrophosphate, soda ash, sodium hydroxide.ALSO:Micron sized particles are reduced by partially filling a baffle-free, agitator-free, smooth-inner-surfaced cylindrical drum with a fluid suspension of particles, liquid and particulate grinding medium of size - 4 + 35 mesh. There is sufficient liquid to form a slip. The drum is continuously rotated about its horizontal axis at less than critical speed, so that the suspension occupies only the lower portion of the drum. The individual particles of grinding medium travel in continuous generally elliptical paths within the suspension. The density of the grinding medium is greater than that of the particles to be ground, and may comprise 1/32 " steel balls or shot. Materials to be ground include calcined kaolin clay, limestone, talc, with additives, e.g. sodium silicate, and to reduce iron pick-up by the clay a high pH solution is used. This may include tetrasodium pyrophosphate, soda ash, sodium hydroxide.
GB1430167A 1967-03-29 1967-03-29 Grinding method Expired GB1120219A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1430167A GB1120219A (en) 1967-03-29 1967-03-29 Grinding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1430167A GB1120219A (en) 1967-03-29 1967-03-29 Grinding method

Publications (1)

Publication Number Publication Date
GB1120219A true GB1120219A (en) 1968-07-17

Family

ID=10038701

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1430167A Expired GB1120219A (en) 1967-03-29 1967-03-29 Grinding method

Country Status (1)

Country Link
GB (1) GB1120219A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5785749A (en) * 1997-02-19 1998-07-28 Southern Clay Products, Inc. Method for producing rheological additives and coating compositions incorporating same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5785749A (en) * 1997-02-19 1998-07-28 Southern Clay Products, Inc. Method for producing rheological additives and coating compositions incorporating same

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