. Something about sugar; its history, growth, manufacture and distribution . REFINING OF RAW SUGAR 59 The impurities removed by the filter presses consist of sand,portions of bags and baskets, phosphates, hair, lime, salts andgums, in fact every kind of foreign matter that finds its wayinto raw sugar either in the process of manufacture or in trans-portation. A small amount of sugar accompanies this refuse,but as its recovery would cost more than it is worth, it is al-lowed to run to waste. The filter-press cake, as it is called, con-tains valuable fertilizing agents, and when conditions permi
. Something about sugar; its history, growth, manufacture and distribution . REFINING OF RAW SUGAR 59 The impurities removed by the filter presses consist of sand,portions of bags and baskets, phosphates, hair, lime, salts andgums, in fact every kind of foreign matter that finds its wayinto raw sugar either in the process of manufacture or in trans-portation. A small amount of sugar accompanies this refuse,but as its recovery would cost more than it is worth, it is al-lowed to run to waste. The filter-press cake, as it is called, con-tains valuable fertilizing agents, and when conditions permitit is used for fertilizing purposes, otherwise it is run to waste. BONE-CHAR FILTRATIONREMOVAL OF COLOR To resume the course of the bag-filtered liquor, from which thesuperficial, the suspended and insoluble impurities have been re-moved and which is now the color of clear amber, the next stepis bone-char filtration. Bone-char, bone-coal or bone-black, as it is variously called,is made from the bones of animals. After the fat and glue areremoved, the bones are subjected
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectsugar, bookyear1917
