Cane sugar; a textbook on the agriculture of the sugar cane, the manufacture of cane sugar, and the analysis of sugar-house products . , and it may be remarked :— 1. The numerical values obtained in the calculation wiU vary with everymill, and especially are controlled by the value taken for the vertical angleof the mill. 2. The use of one constant for the bagasse in all the mills after a varyingnumber of pressings is too broad. 3. No account is taken of the slipping action of the top roll when movingover the layer of bagasse. 4. The occasional fracture of trash turners shows that pressures mu
Cane sugar; a textbook on the agriculture of the sugar cane, the manufacture of cane sugar, and the analysis of sugar-house products . , and it may be remarked :— 1. The numerical values obtained in the calculation wiU vary with everymill, and especially are controlled by the value taken for the vertical angleof the mill. 2. The use of one constant for the bagasse in all the mills after a varyingnumber of pressings is too broad. 3. No account is taken of the slipping action of the top roll when movingover the layer of bagasse. 4. The occasional fracture of trash turners shows that pressures muchgreater than those computed do occur. 5. Any choking of the bagasse on the plate entirely invalidates anyconclusions that can be drawn. Q 210 CHAPTER XI The conclusions drawn by the writer were intended to be only general,and to apply solely to a layer of hagasse flowing uniformly over the trash platewithout interruption. In actual operation it is doubtful if such a conditionever obtains. £^ap3 CapSaV- Fig. 112 Pressure Regulators.—In a rigid mill in which the position of all the rollers is fixed by means of caps andtie-rods, any variation in thequantity of cane, or morestrictly of fibre, passing in aunit of time, is accompanied bya variation in the pressure towhich the material is the quantity of fibre is lessthan corresponds to the mini-mum opening or clearance, thepressure tends to vanish ; andif the quantity increase in-definitely, the mill will eitherchoke, or a fracture of somepart will occur, provided that the engine develops sufficient power. In rigidmills it is then necessary to keep the quantity of fibre passing as constantas is possible, and to control the setting and speed in relation to the quantityof cane desired to be miUed. WTien the volume occupied by a unit weightof bagasse with a pre-arranged water content is known, the opening andthe speed of rotation can be arranged to suit. Only a first approximationcan be made, however, since, in
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectsugar, bookyear1921
