Mixing device and mixing method

Lightweight building panels, such as plasterboards (e.g., gypsum plasterboards), are generally used to provide internal bulkheads in buildings. Plaster sheets are typically carried and positioned by hand. Thus, it is desirable to reduce the weight of the plasterboard. It is known that an aqueous foam is included in a plasterboard slurry for the production of plasterboards. However, previously known mixers have been found to break foam bubbles. A stucco slurry mixing device (100) is provided that includes an inlet (130) for introducing foam into a mixing chamber (110), where the inlet (130) includes an inlet aperture (132) in a wall of the mixing chamber (110) and an inlet conduit (134) extending therefrom such that a relative angle between a longitudinal axis (136) of the inlet conduit (134) and a tangent (140) of a mixing path (124) defined by a mixing member (120) is less than 90 degrees. 轻质建筑面板，例如灰泥板(例如石膏灰泥板)通常用于在建筑物中提供内部隔板。灰泥板片通常用手携带和定位。因此，希望减轻灰泥板的重量。已知在用于生产灰泥板的灰泥浆料中包括水性泡沫。然而，已发现先前已知的混合器破坏泡沫气泡。本发明提供一种灰泥浆料