Abstract: In an apparatus for separating suspended particles, such as ash, from stack gas, consisting of a coarse separator, a take-up container for particles removed from suspension in the coarse separator, a fines separator for the partially-cleaned gas output of the coarse separator, and a stack for the cleaned gas output of the fines separator, a new arrangement is disclosed for maintaining the temperature of the dirty stack gas within the apparatus above its dew point so as to prevent the deposition of soot (sooting-up), such arrangement being the construction of the apparatus in such a way that the coarse separator, the fines separator and the outlet stack form an integral structural unit which sits upon the take-up container, which is supported by feet set upon a foundation. In such arrangement, the heat of the hot, suspended ashes deposited in the take-up container is transferred to the take-up container, and thence, to the elements of the integral structural unit.

Abstract: A shell silo is supported with its bottom stage clear of the ground by means of support legs which are secured to flanges integral with the longitudinal edges of shell sections. The legs are secured in this way to at least the bottom stage and, where there are three or more stages or rings, also to the third stage, the sections of alternate stages being aligned with one another. The legs may be formed of a hollow cross-section member having a projecting strip or flange through which the connection to the flange of the shell section is made, and a separated backing strip may also be provided.

Abstract: In apparatus for weighing powdered material conveyed by suction from two or more supply containers to a single weighing and separating container via individual conduits with respective shutoff valves, the said valves are directly adjacent one another near the weighing container and in a common block to which are connected the said individual conduits and a common outlet conduit leading to the weighing container. For controlling the dosaging, an air supply valve and a secondary air valve may be provided on the valve block upstream of the shutoff valves. The respective valves may be driven by compressed-air cylinders controlled by switches associated with the weighing balance.

Abstract: An apparatus for the treatment of synthetic resin powder, such as an epoxy resin or polyester resin powder that forms an excess of powder when used for coating surfaces. The apparatus has a substantially horizontal and cylindrical screen mounted in a housing with an outside discharge for material passing through the screen from its interior and a rotor for rotating inside the screen. The rotor comprises at least two bars spaced and generally parallel with the inside of the screen and is rotatable in the housing on the bearings which are open towards the screen and are connected to a supply of fluid under pressure.