METHOD AND PLANT FOR THE PRODUCTION OF BOARDS FROM PLASTER AND FIBRES

摘要

A method of and apparatus for producing gypsum fiber boards includes introducing shaped boards provided of a mash of calcium sulphate dihydrate and fibrous material and possibly additives after dewatering and shaping the mash into at least one pressure vessel and to heat the boards at saturated steam atmosphere to 120 DEG -160 DEG C. over a predetermined period. Thereafter, the boards are allowed to cool down within the pressure vessel to a temperature of about 100 DEG or less before being discharged therefrom.