Rockwool Aktiebolaget

Gunnar W Hartung

Hangkan Wolff

A device for the removal of a solidified mineral melt, termed flash, from the discharge end of a spout (3) of a transport channel (1) that is used to carry liquid mineral melt (2) to a mineral wool fiber producing unit (4). The device has a finger (9) made of a heat resistant material which is mounted to be quickly moved by a motor (10, 11) past and through liquid mineral melt (5) below and adjacent the spout (3) on the melt channel (1) in order to scrape off existing flash material from the discharge end of the melt channel (1). The device optionally may have a thermosensor, that emits an alarm signal, in case the temperature of the mineral melt at any point falls below a predetermined temperature, and/or a sensor designed to immediatley actuate the flash removal finger (9) as soon as a tendency to flash formation appears.

Flash removal device in a plant for production of mineral wool

Method and apparatus for removing fibres and other particles from the surfaces of compressible mineral wool products, for instance, mineral wool plates (2), by means of one or more suction slot nozzles (5) which suck air from adjacent the surfaces of the mineral wool products. The mineral wool products, while being exposed to the suction of slot or slots (5), are subjected to a quick compression so that a part of the air enclosed in the mineral wool is forced out towards the suction slot or slots (5) thereby bringing loose fibres and other particles at and adjacent the surfaces into the suction slot or slots (5).

Method and apparatus for vacuum cleaning mineral wool products while

A method and an apparatus in a plant for fibrating molten mineral material which in the form of a stream of molten material (4) is discharged to the peripheral surface of a primary spinner wheel (1) and which is formed to mineral fibres by being thrown out from the spinner wheel or from several cooperating spinner wheels. The distribution of the stream of molten material (4) over the width or length of the primary spinner wheel is improved in that a force is applied to the incoming stream of molten material (4), especially from rear side thereof as seen in the rotation direction of the spinner wheel, which force is acting in a plane substantially perpendicular to a generatrix to the peripheral surface of the spinner wheel (1) and in a blunt angle to the stream of molten material (4). The force acts on a stream of molten material a short distance in advance of the place where the material comes into contact with the spinner wheel (1), and the force provides a widening of the stream of molten material without breaking same up into small fragments. The force may be provided by a gas flow (5) or by different mechanical deflector means.

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Skoude, Sweden

Gunnar W Hartung