Abstract: Fiberboard or chipboard is made by first comminuting vegetable starting material in a first comminutor into a stream of loose plant particles with silicate particles. Then, in a first classifier silicate particles of a diameter of less than 50 ?m are separated from the plant particles of the stream. The plant particles remaining in the stream are then glue-coated, and the stream is pressed into fiberboard or chipboard.

Abstract: The invention relates to a device and a method having a first and a second zone (Z1, Z2) for producing insulating or acoustic panels from a pressed material mat (2) which consists at least partially of lignocellulose particles coated with binders, the first zone (Z1) being designed for heating and/or compressing the pressed material mat, and the second zone (Z2) being designed for curing the pressed material mat with the aid of calibration plates (3), and there being driven circulating screen bands (5a-5f) in contact with the upper and lower pressed material mat surfaces. According to the invention, to increase the production speed, at least four circulating screen bands (5a-5f) are used, at least two of which are in operative contact with the pressed material mat (2) in the region of the first zone (Z1), and at least two of which are in operative contact with the pressed material mat (2) in the region of the second zone (Z2).

Abstract: The invention relates to a device and a method for separating and/or recovering silicate particles from plant material. This device and the method are characterized by an air classifier (3, 14), which has at least one material inlet (4), an air inlet (6), arranged under the material inlet (4), an air outlet (7) and at least one particle receptacle (8), arranged under the air outlet, wherein the plant particles recovered from plant material by crushing can be subjected to an air stream in the air classifier (3, 14) in such a way that silicate particles contained in the plant material are removed by the air stream via the air outlet (7) and, as a result of gravitational force, the plant particles are received by the particle receptacle (8) arranged under the air outlet (7) and taken away.

Abstract: The invention relates to an installation for producing glued plant particles, in particular from annual plants (e.g. straw), in order to produce boards, e.g. fibreboards or chipboards, having at least one comminuting apparatus (2) for comminuting plant-based starting material to form scatterable plant particles, and having a gluing apparatus (15) for gluing the plant particles. This installation is characterized in that at least one first screening apparatus (3) for separating silicate particles from the plant particles is arranged between the comminuting apparatus (2) and the gluing apparatus (15).

Abstract: The invention relates to a device and a method for separating and/or recovering silicate particles from plant material. This device and the method are characterized by an air classifier (3, 14), which has at least one material inlet (4), an air inlet (6), arranged under the material inlet (4), an air outlet (7) and at least one particle receptacle (8), arranged under the air outlet, wherein the plant particles recovered from plant material by crushing can be subjected to an air stream in the air classifier (3, 14) in such a way that silicate particles contained in the plant material are removed by the air stream via the air outlet (7) and, as a result of gravitational force, the plant particles are received by the particle receptacle (8) arranged under the air outlet (7) and taken away.

Abstract: Wood-fiber insulation board is pressed to a uniform thickness and continuously advanced in a horizontal travel direction on a conveyor prior to subdivision into individual panels. The strength of the wood-fiber insulation board is determined by first pressing with an actuator a contact element downward at an actual pressure on a subregion of the advancing wood-fiber insulation board so as produce an actual deformation of the wood-fiber insulation board of between 1% to 7% of its thickness. Then a force sensor determines the actual pressure applied by the contact element to the board that produces the actual deformation and this the determined pressure and the actual deformation are transmitted to a central processor that extrapolates to a standardized deformation based on the determined pressure and actual deformation.

Abstract: The invention relates to a method for continuously mixing fibers with a binding agent for producing fiberboards in a continuously operating mixing apparatus which comprises at least one mixing chamber and one or a plurality of mixing tools fastened to a rotating mixer shaft, wherein the mixing tools mix the fibers with the binding agent and convey it in a conveying direction through the mixer. Said method is characterized in that the rotational speed (n) of the mixer shaft and the diameter (d) of the mixing chamber are matched to each other with the proviso that the (nominal) centrifugal acceleration of the fibers in the region of the mixer inside wall is 10000 to 30000 m/sec2.