GB625701A - Improvements in processes for grinding wood shavings or any other vegetable fibrous material - Google Patents

Improvements in processes for grinding wood shavings or any other vegetable fibrous material

Info

Publication number
GB625701A
GB625701A GB37072/46A GB3707246A GB625701A GB 625701 A GB625701 A GB 625701A GB 37072/46 A GB37072/46 A GB 37072/46A GB 3707246 A GB3707246 A GB 3707246A GB 625701 A GB625701 A GB 625701A
Authority
GB
United Kingdom
Prior art keywords
grinding
added
fibrous material
case
wood shavings
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
GB37072/46A
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.)
FABRICATION D ISOLANTS ET REVE
Original Assignee
FABRICATION D ISOLANTS ET REVE
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 FABRICATION D ISOLANTS ET REVE filed Critical FABRICATION D ISOLANTS ET REVE
Publication of GB625701A publication Critical patent/GB625701A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/06—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods
    • D21B1/063—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods using grinding devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)

Abstract

In a process for grinding wood shavings and other fibrous material such as straw, in which the material is first softened by steam and then subjected to the action of grinding discs, hot water at a temperature above 80 DEG C. is injected into the apparatus so as to act on the material after it has been softened by the steam but before it reaches the grinding discs. Hydrolizing reagents such as mineral or organic acids or salts thereof may be added to the material either (1) before it enters the grinding apparatus or (2) at the moment of entry into the apparatus or (3) in solution in the hot water. In the first case, a dilute solution of the hydrolizing reagent may be added to the water used to moisten the shavings while in storage, and in the second case the reagent may be added in dilute solution or in powder form. An example quoted for the third case is an 0.5 per cent solution of oxalic acid.
GB37072/46A 1946-02-01 1946-12-16 Improvements in processes for grinding wood shavings or any other vegetable fibrous material Expired GB625701A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR625701X 1946-02-01

Publications (1)

Publication Number Publication Date
GB625701A true GB625701A (en) 1949-07-01

Family

ID=8987884

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37072/46A Expired GB625701A (en) 1946-02-01 1946-12-16 Improvements in processes for grinding wood shavings or any other vegetable fibrous material

Country Status (1)

Country Link
GB (1) GB625701A (en)

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