US2810158A - Process and apparatus for the production of mineral and slag wool - Google Patents

Process and apparatus for the production of mineral and slag wool Download PDF

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Publication number
US2810158A
US2810158A US314767A US31476752A US2810158A US 2810158 A US2810158 A US 2810158A US 314767 A US314767 A US 314767A US 31476752 A US31476752 A US 31476752A US 2810158 A US2810158 A US 2810158A
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stream
slag
path
flowing
gaseous medium
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US314767A
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English (en)
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Smout Willem Cornelis Petrus
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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/06—Manufacture of glass fibres or filaments by blasting or blowing molten glass, e.g. for making staple fibres

Definitions

  • the value of mineral wool or slag wool is decisively determined by the filament length and the bead or granule content.
  • the filament length is limitedin contrast 'to the costly drawing processes and'a certain bead content must be accepted.
  • the present invention is based upon the general principle of carrying away the poured stream of slag gradually over a longer distance than heretofore instead of atomising it all at once as is usual in known processes.
  • the atomising medium for example air or steam
  • the atomising medium is caused to act on the vertically descending stream of slag substantially at right angles to the direction of flow thereof and .over a length thereof which is greater than twice its thickness.
  • the length of the zone of action preferably amounts to 8-12 times the thickness of the stream of slag.
  • the atomising medium is directed in the form of two wide "fiat bands on to the two sides of the stream of slag so that the said stream is gradually carried away from the sides and is drawn out into the form of wool.
  • the atomising medium is thus directed substantially tangentially on to the stream of slag.
  • An apparatus for carrying out the process according to the invention comprises a nozzle or jet having two parallel-spaced slots for the delivery of the atomising medium, the length of the slots being at least ten times as great as the width.
  • an aperture is provided between the slots for the passage of air, arranged so that no eddying occurs between the two bands of atomising medium which act on the stream of slag and no undesirable influence is exerted on the latter, so that it is actually laterally acted on by the atomising medium and thereby carried away in accordance with the general principle of the invention.
  • a number of apparatus may be arranged in juxtaposition to one another thus blowing a number of streams issuing parallel to one another.
  • jets of smaller thickness can be employed than when a single thick jet is fed to the atomising arrangement.
  • the atomising medium for example compressed gas, compressed .air :and compressed steam, passes through the tube 1 into two arms of the forked or U-shaped blowing nozzle 2.
  • Slots 3 parallel .or substantially parallel to a I atent 0 one another are formed one in each arm of the blowing nozzle.
  • the width of the slots is constant or substantially constant over their entire length which is at least ten times as great as the slot width. While in the drawing the two arms are rigidly connected together and the distance between the slots is therefore fixed, the two parts of blowing nozzle in which the slots are formed may be arranged separately from one another'and adapted to be adjusted in relation to one another. It is then possible to adjust the distance between the slots and to adapt it to the thickness of the stream 5 of the nozzle.
  • the nozzle arms containing the slots may be arranged to rotate about a longitudinal axis in order that the direction of the issuing band of atomising medium may thus be influenced.
  • the bands of atomising medium leave the slots 3 parallel to one another and perpendicularly to the plane of'the atomising nozzle 2.
  • a recess 4 is formed between the arms of the atomising nozzle and between the slots 3.
  • the said recess serves to direct the atomising medium in the form of flat wide bands on to the sides of the stream of slag without eddying.
  • the atomising medium then carries the molten mass away from these sides and draws it out in the form of wool comprising very long fibres and few beads or granules, because the filaments adhere to the liquid slag streams 5 atone end and can thus be drawn out to a slag travelling past great length.
  • the pressure of the atomising medium is adapted to the particular conditions by a regulating device and amounts, for example, to 5 atmospheres above atmospheric pressure.
  • Nozzle members 2 and 2' may be adjusted at a desired spacing'from each other bymeans of slots 8 in connecting member 6, in combination with screws 7.
  • Liquid slag stream 5 is shown to flow from trough 9 through bottom opening 10 thereof.
  • Trough 9 with bottom opening 10 comprise means for producing a flow of fiber-forming material in a predetermined path.
  • the process and the apparatus have been found particularly successful in the production of slag wool from the blast furnace, that is to say, from slag worked up in the heat emanating from the blast furnace.
  • the slag flows down from an aperture situated in the bottom of a channel, for example the blast furnace channel, and past the slotted nozzle 2 hereinbefore described, at an appropriate distance therefrom.
  • the thickness of the poured stream of normal blast furnace slag amounted to 10 mm. and compressed air at a pressure of 5 atmospheres above atmospheric pressure was employed as the atomising medium.
  • the width of each slot 3 in the apparatus amounted to 2 mm. and the length thereof to mm., that is, about 10 times the thickness of the stream of slag. Filament lengths of up to 100 cm. were obtained with a bead or granule content of only 3%.
  • more than one poured stream of slag may be employed.
  • the stream of slag It is not essential for the stream of slag to have been completely consumed at the end of the zone of action of the atomising medium.
  • the conditions may be so chosen that only part of the stream of slag is blown into the form of wool, while another part may flow away at the bottom and be taken up, for example, in a ladle.
  • a method of making fibrous material comprising the steps of producing a flowing stream of fiber forming material in liquid form along a predetermined straight path; and sweeping two separate, spaced streams of gaseous medium respectively across opposite outer portions of said flowing material respectively along substantially parallel planes tangential to said flowing material, so that said portions of said flowing material are drawn out in the form of a fiber by said streams of gaseous medium during passage of said stream of fiber forming material between and in contact with said gas stream.
  • a method of making mineral wool comprising the steps of producing a flowing stream of slag in liquid form along a predetermined straight path; and sweeping two sep arate, spaced streams of gaseous medium respectively across opposite outer portions of said slag respectively along substantially parallel planes tangential to said fiowing slag, each stream of gaseous medium being elongated along said path of flow of said slag and being of a length greater than twice the thickness of the flowing slag, so that said portions of said flowing slag are drawn out in the form of a fiber by said streams of gaseous medium during passage of said stream of fiber forming material between and in contact with said gas stream.
  • a method of making mineral wool comprising the steps of producing a flowing stream of slag in liquid form along a predetermined straightpath; and sweeping two separate spaced streams of gaseous medium respectively across opposite outer portions of said slag respectively along substantially parallel planes tangential to said flowing slag and substantially normal to said path of flow thereof, each stream of gaseous ,medinm being elongated along said path of flow of said slag and being of a length approximately 812 times the thickness of the flowing slag, so that said portions of said flowing slag are drawn out in the form of a fiber by said streams of gaseous medium during passage of said stream of fiber forming material between and in contact with said gas stream.
  • Apparatus for producing fibers from fiber forming material comprising, in combination, means for producing a flow of the fiber forming material along a predetermined straight path; conduit means for supplying a flow of gaseous medium; and a pair of spaced nozzle means connected to said conduit means and respectively formed with elongated openings extending substantially parallel to said path respectively on opposite sides of a plane passing between said openings and including said path for projecting substantially parallel walls of gaseous me dium across said path respectively an opposite sides there of.
  • Apparatus for producing fibers from fiber forming material comprising, in combination, means for producing a flow of the fiber forming material in along a predetermined straight path; conduit means for supplying a flow of gaseous medium; and a pair of spaced nozzle means connected to said conduit means and respectively formed with elongated openings extending substantially parallelto said path respectively on opposite sides of a plane passing between said openings and including said path for projecting substantially parallel walls of gaseous medium across said path respectively an opposite sides thereof, the length of said openings being at least ten times their width.
  • Apparatus for producing fibers from fiber forming material comprising, in combination, means for producing a flow of the fiber forming material along a predetermined straight path; conduit means for supplying a flow of gaseous medium; a pair of spaced nozzle means cnnected to said conduit means and respectively formed with elongated openings extending substantially parallel to said path respectively on opposite sides of a plane passing between said openings and including said path for projecting substantially parallel walls of gaseous medium across said path respectively an opposite. sides thereof and adjustable connecting means connecting said nozzle means together for adjustably spacing the same relative to each other to adjust the positions of said elongated openings relative to each other.
  • a method of making fibrous material comprising the steps of producing a flowing stream of fiber forming material in liquid form along a predetermined straight path; and sweeping two separate, spaced streams of gase ous medium respectively across opposite outer portions of said flowing material respectively along substantially parallel planes tangential to said flowing material, each stream of gaseous medium being elongated along said path of flow of said material, so that said portions of said flowing material are drawn out in the form of a fiber by said stream of gaseous medium during passage of said stream of fiber. forming material between and in contact with said gaseous stream.
  • a method of making fibrous material comprising the steps of producing a flowing stream of fiber forming material in liquid form falling along a predetermined straight path; and sweeping twoseparate, spaced streams of gaseous medium respectively across opposite outer portions of said flowing material respectively along sub stantially parallel planes tangential to said flowing material substantially normal to said path of flow thereof, each stream of gaseous medium being elongated along said path of flow of said material, so that said portions of said flowing material are drawn out in the form of a. fiber by said stream of gaseous medium during passage of said stream of fiber forming material between and in contact with said gaseous stream.
  • a method of making fibrous material comprising the steps of producing a flowing stream of fiber forming material in liquid form along a predetermined straight path; sweeping two separate, spaced streams of gaseous medium, respectively across opposite outer portions of said flowing material respectively along substantially parallel planes tangential to said flowing material, each stream of gaseous medium being elongated along said path of flow of said material; and maintaining a free air passage between said streams of gaseous medium in the direction of flow thereof, so that said portions of said flowing material are drawn out in the form of a fiber by said stream of gaseous medium during passage of said stream of fiber forming material between and in contact with said gaseous stream.
  • a method of making mineral wool comprising the steps of producing a flowing stream of slag in liquid form along a predetermined straight path; sweeping two separate, spaced streams of gaseous medium respectively across opposite outer portions of said slag respectively along substantially parallel planes tangential to said flowing slag and substantially normal to said path of flow thereof, each stream of gaseous medium being elongated along said path of flow of said slag and being of a length approximately 8-12 times the thickness of the flowing slag; and maintaining a free air passage between said streams of gaseous medium in the direction of flow thereof, so that said portions of said flowing slag are drawn out in the form of a fiber by said streams of gaseous medium during passage of said stream of fiber. forming material between and in contact with said gas stream.
  • Apparatus for producing fibers from a stream of fiber forming material flowing along a predetermined straight path comprising, in combination, means for providing along said path a stream of predetermined width of fiber forming material; conduit means for supplying a flow of gaseous medium; and a pair of spaced nozzle means connected to said conduit means and respectively formed with elongated openings extending substantially parallel to each other and to said path respectively on opposite sides of a plane passing between said openings and including said path, said elongated openings, respectively, having inner edges spaced from each other at a distance substantially equal to said predetermined width, for projecting substantially parallel walls of gaseous medium across said path respectively on opposite sides thereof.
  • Apparatus for producing fibers from a stream of fiber forming material flowing along a predetermined straight path comprising, in combination, means for pro viding along said path a stream of predetermined width of fiber forming material; conduit means for supplying a flow of gaseous medium; a pair of spaced nozzle means connected to said conduit means and respectively formed with elongated openings extending substantially parallel to each other and to said path respectively on opposite 5 sides of a plane passing between said openings and including said path, said elongated openings, respectively, having inner edges spaced from each other at a distance substantially equal to said predetermined width, for projecting substantially parallel walls of gaseous medium across said path respectively on opposite sides thereof; and means for maintaining a free air passage between said walls of gaseous medium in the direction of flow thereof.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Glanulating (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Inorganic Fibers (AREA)
  • Paper (AREA)
US314767A 1952-01-14 1952-10-15 Process and apparatus for the production of mineral and slag wool Expired - Lifetime US2810158A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DES26798A DE936853C (de) 1952-01-14 1952-01-14 Verfahren und Vorrichtung zur Herstellung von Mineral- und Schlackenwolle
DES27944A DE958454C (de) 1952-01-14 1952-04-02 Vorrichtung zur Herstellung von Schlackenwolle

Publications (1)

Publication Number Publication Date
US2810158A true US2810158A (en) 1957-10-22

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US314767A Expired - Lifetime US2810158A (en) 1952-01-14 1952-10-15 Process and apparatus for the production of mineral and slag wool

Country Status (7)

Country Link
US (1) US2810158A (pt)
BE (1) BE511600A (pt)
DE (2) DE936853C (pt)
FR (1) FR1056632A (pt)
GB (1) GB701886A (pt)
LU (1) LU31460A1 (pt)
NL (1) NL84476C (pt)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3197295A (en) * 1960-09-27 1965-07-27 Johns Manville Method for forming siliceous fibers
US4497644A (en) * 1983-09-12 1985-02-05 Owens-Corning Fiberglas Corporation Blower for the attenuation of fibers

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US299111A (en) * 1884-05-27 Process of and apparatus
US436244A (en) * 1890-09-09 Method of and apparatus for the production of mineral wool
US721293A (en) * 1901-10-28 1903-02-24 Baer Brothers Apparatus for the disintegration of metal.
US1245328A (en) * 1916-09-06 1917-11-06 Wood Freeman Method and apparatus for pulverizing molten materials.
US1650136A (en) * 1927-11-22 Means for blowing mineral wool
US2308584A (en) * 1940-08-03 1943-01-19 New Jersey Zinc Co Production of metal powder
US2330038A (en) * 1940-10-14 1943-09-21 John F Ervin Method and means of disintegrating metal into abrasive material

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1977406A (en) * 1931-05-19 1934-10-16 Johns Manville Fluid-jet nozzle for blowing mineral wool
FR756092A (fr) * 1933-05-24 1933-12-04 Hauts Fourneaux De Saulnes Soc Dispositifs pour la fabrication de la laine minérale et en particulier de la laine de laitier
US2126411A (en) * 1934-04-17 1938-08-09 Johns Manville Method for making mineral wool
US2136158A (en) * 1937-02-02 1938-11-08 Standard Lime And Stone Compan Method of blowing meineral wool
DE724264C (de) * 1938-01-11 1942-08-21 Hein & Co Vormals Haigerer Hue Verfahren zur Erzeugung eines zum Zerblasen schmelzfluessiger Stoffe bestimmten Druckmittelstrahles zwecks Gewinnung von Schlackenwolle, Gesteinswolle o. dgl.
DE682858C (de) * 1938-04-16 1939-10-24 Eisenwerke Akt Ges Deutsche Verfahren zum Zerfasern von fluessigen, besonders schmelzfluessigen Stoffen mittels eines auf den ausfliessenden Werkstoffstrahl einwirkenden Zerfaserungsmittels
BE434529A (pt) * 1938-05-24
US2255206A (en) * 1938-07-13 1941-09-09 United States Gypsum Co Apparatus for providing uniformly graded fibrous materials
DE704752C (de) * 1939-01-01 1941-04-22 Lambert Jansen Verfahren zur Trennung der Fasern von den Tropfen bei der Herstellung von Mineralfasern
DE705127C (de) * 1939-11-15 1941-04-18 Eisenwerke Akt Ges Deutsche Verfahren zum Verblasen von schmelzfluessigen Stoffen, wie insbesondere Mineralien, Glas, Schlacke o. dgl., zu Wolle mittels eines Verblasedruckmittels
DE707934C (de) * 1939-11-16 1941-07-08 Eisenwerke Akt Ges Deutsche Verfahren und Vorrichtung zum Zerfasern von fluessigen Stoffen mittels eines Verblasedruckmittels, wie insbesondere zur Herstellung von Schlackenwolle, Mineralwolle oderGlaswolle
DE722886C (de) * 1941-04-08 1942-07-23 Fritz Muthmann Vorrichtung zur Herstellung von Schlacken- und Mineralwolle mittels Dampf- oder Pressluftstrahls
DE848990C (de) * 1942-01-09 1952-09-11 Gruenzweig & Hartmann G M B H Einrichtung und Verfahren zum Herstellen von Mineralwolle
DE748956C (de) * 1942-10-10 1944-11-11 Verfahren und Vorrichtung zur Herstellung von Mineralwolle durch Pressluftzerfaserung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US299111A (en) * 1884-05-27 Process of and apparatus
US436244A (en) * 1890-09-09 Method of and apparatus for the production of mineral wool
US1650136A (en) * 1927-11-22 Means for blowing mineral wool
US721293A (en) * 1901-10-28 1903-02-24 Baer Brothers Apparatus for the disintegration of metal.
US1245328A (en) * 1916-09-06 1917-11-06 Wood Freeman Method and apparatus for pulverizing molten materials.
US2308584A (en) * 1940-08-03 1943-01-19 New Jersey Zinc Co Production of metal powder
US2330038A (en) * 1940-10-14 1943-09-21 John F Ervin Method and means of disintegrating metal into abrasive material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3197295A (en) * 1960-09-27 1965-07-27 Johns Manville Method for forming siliceous fibers
US4497644A (en) * 1983-09-12 1985-02-05 Owens-Corning Fiberglas Corporation Blower for the attenuation of fibers

Also Published As

Publication number Publication date
NL84476C (pt)
FR1056632A (fr) 1954-03-01
DE936853C (de) 1955-12-29
GB701886A (en) 1954-01-06
LU31460A1 (pt)
DE958454C (de) 1957-02-21
BE511600A (pt)

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