GB1156221A - Treatment of Asbestos and the Product produced thereby - Google Patents

Treatment of Asbestos and the Product produced thereby

Info

Publication number
GB1156221A
GB1156221A GB23324/66A GB2332466A GB1156221A GB 1156221 A GB1156221 A GB 1156221A GB 23324/66 A GB23324/66 A GB 23324/66A GB 2332466 A GB2332466 A GB 2332466A GB 1156221 A GB1156221 A GB 1156221A
Authority
GB
United Kingdom
Prior art keywords
asbestos
dmso
treatment
product produced
opened
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
GB23324/66A
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.)
FMC Corp
Original Assignee
FMC 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 FMC Corp filed Critical FMC Corp
Publication of GB1156221A publication Critical patent/GB1156221A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/36—Inorganic fibres or flakes
    • D21H13/38—Inorganic fibres or flakes siliceous
    • D21H13/42—Asbestos
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02—Treatment
    • C04B20/08—Defibrillating asbestos
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H5/00—Special paper or cardboard not otherwise provided for
    • D21H5/12—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials
    • D21H5/18—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials of inorganic fibres with or without cellulose fibres
    • D21H5/183—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials of inorganic fibres with or without cellulose fibres of asbestos fibres

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Paper (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

1,156,221. Asbestos treatment. FMC CORP. 25 May, 1966 [13 Aug., 1965], No. 23324/66. Heading C1A. [Also in Division D2] Asbestos is opened by mechanical treatment in the presence of dimethylsulphoxide (DMSO) to produce fibrils of diameter from 200A to 1Á, then washed free of DMSO. The DMSO may be undiluted or mixed with water. The asbestos may be treated before or during DMSO treatment with a dilute acid to increase the SiO 2 lMgO wt. ratio by 5-30%. Thus, the asbestos may be slurried with DMSO and HC1, then mechanically treated by stirring at 100-200 r.p.m. optionally followed by treatment in a disintegrator. The DMSO is recovered and reused. Temperatures of up to 100‹ C. may be used. The asbestos may be initially opened by dry-grinding.
GB23324/66A 1965-08-13 1966-05-25 Treatment of Asbestos and the Product produced thereby Expired GB1156221A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US479620A US3410751A (en) 1965-08-13 1965-08-13 Opening up asbestos with dimethylsulfoxide

Publications (1)

Publication Number Publication Date
GB1156221A true GB1156221A (en) 1969-06-25

Family

ID=23904742

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23324/66A Expired GB1156221A (en) 1965-08-13 1966-05-25 Treatment of Asbestos and the Product produced thereby

Country Status (6)

Country Link
US (1) US3410751A (en)
BE (1) BE685327A (en)
DE (1) DE1571480A1 (en)
FR (1) FR1529562A (en)
GB (1) GB1156221A (en)
NL (1) NL6611412A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA956849A (en) * 1972-01-27 1974-10-29 Raymond T. Woodhams Chemically opening chrysotile asbestos and encapsulating
US4812204A (en) * 1987-07-24 1989-03-14 Ceram-Sna, Inc. Process for obtaining boric acid treated asbestos fiber

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2626213A (en) * 1948-12-21 1953-01-20 Raybestos Manhattan Inc Asbestos dispersions and method of forming same
US2685825A (en) * 1949-05-28 1954-08-10 Raybestos Manhattan Inc Refinement of asbestos
US2661287A (en) * 1949-11-15 1953-12-01 Du Pont Aqueous asbestos dispersion and process for producing same

Also Published As

Publication number Publication date
FR1529562A (en) 1968-06-21
DE1571480A1 (en) 1970-12-10
US3410751A (en) 1968-11-12
NL6611412A (en) 1967-02-14
BE685327A (en) 1967-02-10

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