Abstract: In a kraft pulp mill, a process and apparatus for removing and washing dregs from green liquor so that the pH of the dregs is below "hazardous waste" levels. Specifically, green liquor clarifier underflow is filtered using a simple non-precoat cassette filter to form a first dregs cake. The dregs cake is diluted, preferably with water. The diluted dregs cake is then filtered in a precoat dregs filter to produce a dregs cake that is at least 50% solid and has a pH of about 12.0 or less.

Abstract: A method and a device for producing corrugated strip packaging parts to be used for packaging cylindrical or elongated parts in separate compartments. The device includes a series of form bodies arranged on an endlessly rotating belt. The form bodies have essentially the same inside cross-section as the lower loops of the corrugated strip material formed by the device and are joined together at their base flanks by elastic material areas. The belt is guided over rerouting points that temporarily spread apart two adjacent form bodies to form an enlarged intermediate space. A form tool is arranged adjacent one of the rerouting points to engage and press the material of the packaging part into the enlarged intermediate space.

Abstract: The invention concerns a method relating to powder metallurgical manufacturing of a body having a through hole, for example a hollowed tool blank or thick-walled tube. The characteristic feature of the method is that in an outer capsule there is provided a tube (6) having substantially the same length as the capsule, so that the tube extends substantially through the entire length of the capsule, that in the tube there is provided a core (5) which also extends through the capsule and the entire length of the tube, that the space between the tube (6) and the inner side of the capsule (1) is filled with a metal powder (9) which shall form the desired body, that the space (10) in the tube (6) between the core (5) and the inner side of the tube is filled with a non-metallic powder (11), that the capsule is closed hermetically, and that the closed capsule and its content is subjected to hot isostatic compaction at a temperature exceeding 1000 C., so that the metal powder is compacted to complete density.