PROCESSING EQUIPMENT AND METHOD FOR A PULVERULENT CALCIUM SULPHATE MATERIAL AND NOVEL HYDRAULIC BINDER BASED ON CALCIUM SULPHATE MATERIAL

摘要

FIELD OF THE INVENTION The present invention relates to a method and apparatus for the treatment of natural calcareous fibrate or compound based, pulverulent base material for the preparation of a hydroulphite binder consisting of a stable mixture of α-anhydrite and bassanite, wherein the? Further, the present invention relates to a hydrocyanic binder based on calcium sulfate. The essence of the process is the following consecutive steps of heat-stone mining. (a) heating the spongy material to a temperature substantially between 220 ° C and 360 ° C in the presence of water vapor, under conditions which are suitable for producing mainly calcareous feldspar, (b) subjecting the material so heated to a temperature of at least 150 ° C; In less than 15 minutes with the help of cold, dry gas injected into the material under pressure. The essence of the apparatus comprises a heat-burning tunnel (1), in which heat-sinking troughs (5) are placed adjacent to one another and the troughs (5) are provided with means (8, 9) to heat the vibrations, furthermore and below the tunnel (1) there is a cooling device (2) having a heat-shrinkable container (17) and a means (20) for heating it to vibration vibration, further the material is gravitated from the lower end of the tunnel (1) a cooling means (26) comprising cold means for injecting cold compressed air (21, 22, 23) and means (24, 25) for removing material from the lower end of the cooling device (2). The essence of the hydrocyclic binder, heat, is a stable mixture of α-anhydrite and bassanite in which the weight ratio of α-anhydrite is greater than 35%. ŕ