Abstract: Method and apparatus for wetting pourable solid matter. A preferred apparatus includes a tank (31) for accepting the solid matter, a mixing mechanism (32) for moving and breaking up the solid matter within the tank (31), at least one apparatus (5) for spraying the liquid substance supplied from a reservoir (11) into the tank, and an apparatus (2) for continuously feeding solid matter into the tank (31), characterized by the fact that the apparatus for spraying in the liquid substance includes at least one spraying nozzle (5) with an unchangeable (fixed) outlet opening (178) and a closure member (15, 16) that is to be opened (for aerating) and closed continuously, in a controllable sequence, that is connected to a feed line (9) that is under almost uniform pressure, and that is to be opened intermittently, for example electropneumatically, by control signals furnished from the apparatus (2) for supplying the solid matter.

Abstract: Two measuring cups (5, 6) are alternately filled and emptied. The fill st is determined by an overflow, and the emptying time during which a withdrawal pump (30) is connected to the respective cup is determined by scanning pump revolutions. The scanned pump revolutions for emptying are compared with a desired pumping rate, entered into a counter (50) which decrements in accordance with revolutions of the pump (30), and, if a deviation from commanded pumping rate is sensed, a correction memory (60) is loaded which controls over a control unit (33, 61) change in pumping speed to null any deviation from commanded rate. To associate the commanded rate with actual weight of chips or fibers to be coated, the chips or fibers can be weighed continuously, and the continuously weighed number entered into the control computer (33) to generate a command number for entry into the decrementing counter (50).