. Annual report. New York State Museum; Science; Science. GYPSUM DEPOSITS OF NEW YORK 8s use at Mannheim, Germany. The calciner consists of a fire box and automatic stoker opening into the chamber that contains the rotating cylinder. Above the cylinder and connected to it by a pipe is a chamber through which a spiral conveyor passes. The gypsum ground to a size not larger than a hickory nut is charged into the forewarmer, is conveyed by the spiral to the and dis- r\. Fig. 9 Arrangement of installation for Cummer process charged into the rotary cylinder. A fan forces the hot air and g
. Annual report. New York State Museum; Science; Science. GYPSUM DEPOSITS OF NEW YORK 8s use at Mannheim, Germany. The calciner consists of a fire box and automatic stoker opening into the chamber that contains the rotating cylinder. Above the cylinder and connected to it by a pipe is a chamber through which a spiral conveyor passes. The gypsum ground to a size not larger than a hickory nut is charged into the forewarmer, is conveyed by the spiral to the and dis- r\. Fig. 9 Arrangement of installation for Cummer process charged into the rotary cylinder. A fan forces the hot air and gases from the fire box into the cylinder and this calcimes the gyp- sum and forces it toward the discharge end of the cylinder. The material is agitated by a continual lifting and dropping brought about by a series of shelves or buckets on the sides of the revolv- ing cylinder. The larger lumps which would require a lounger period of heating for calcination, owing to their weight, are moved most slowly toward the discharge point, and thus receive the most heat,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original New York State Museum. Albany : University of the State of New York
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectscience, bookyear1902
