摘要:
Described herein is a machine (1) for shredding portions (30) of bituminous material in the solid state into recyclable granules (31) of small dimensions comprising a shredding unit (5), which in turn comprises a perforated tubular body (6), and a pressing member (7) for pushing the portions (30) into the perforated tubular body (6) in such a way as to force the bituminous material by compression to come out through the holes of the perforated tubular body (6) so as to obtain a plurality of substantially filiform extruded portions (33) of the bituminous material, and a cutting member (8) for cutting the extruded portions (33) coming out of the holes of the perforated tubular body (6) in such a way as to obtain the granules (31) of small dimensions.
摘要:
A process for manufacturing homogeneous and low porosity carbon articles of great mechanical strength from a composition including a sinterable mother material and an additive selected from the group consisting of hydrocarbons, fatty acids, esters and salts of fatty acids, organic compounds having OH functional groups and mixtures thereof, wherein the mother material has an H/C atomic ratio of 0.3 to 0.75, a fixed carbon value of 55 to 96% and does not flow out of a 1 mm diameter nozzle at a temperature of 300.degree. C. under a load of 10 kg/cm.sup.2 ; and the additive has a fixed carbon value of 20% at most, a boiling or decomposition point of at least 150.degree. C. and becomes fluid at a temperature of at least 100.degree. C.
摘要:
An apparatus and method for producing sheets of bitumen in which a layer of liquid bitumen is deposited on a steel belt conveyor and is solidified to form a continuous web. The web is stripped from the conveyor and passes downwardly by the action of gravity to a cutting assembly which cuts the web into lengths to form sheets. The sheets are then stacked upon a discharge conveyor and are adapted for packaging.