. Railway mechanical engineer . the mill shaft. The material dis- through the screen surrounding the- separating chamber, thusinsuring cooler operation and maximum screening current of air keeps the screen clean and enables themill to handle material containing a considerable amount ofmoisture without affecting the efficiency of the machine. Assoon as the material is reduced to the desired fineness, it islifted out of the pulverizing zone and discharged. Eachpulverized is belt driven by a 60-hp. vertical motor and re-duces the fuel so that 95 per cent of it will pass through a1
. Railway mechanical engineer . the mill shaft. The material dis- through the screen surrounding the- separating chamber, thusinsuring cooler operation and maximum screening current of air keeps the screen clean and enables themill to handle material containing a considerable amount ofmoisture without affecting the efficiency of the machine. Assoon as the material is reduced to the desired fineness, it islifted out of the pulverizing zone and discharged. Eachpulverized is belt driven by a 60-hp. vertical motor and re-duces the fuel so that 95 per cent of it will pass through a100 mesh screen and 85 per cent through a 200 mesh screen,at the rate of four tons per hour, the plant having a maximumcapacity of eight tons per hour. The grouping of the drives for the various parts of theequipment makes possible a maximum utilization of thepower consumed, as only such parts of the plant as are inactual use need be running at any time. When fully loadedthe actual power consumed is within about five per cent of. Heine Type, Horizontal Tubular Boilers Burning Pulverized Fuel, at the Parsons, Kan., Shops of the Missouri, Kansas <£. Texas charged by the feeder falls between the balls and the grind-ing ring in a uniform, continuous stream, and is reduced tothe desired fineness in one operation. Fan discharge millsare fitted with two fans; one of these fans operates in theseparating chamber immediately above the pulverizing zone,whereas the other fan operates in the fan housing immedi-ately below the pulverizing zone. The upper fan lifts thefine particles of pulverized material from the grinding zoneinto the chamber above the grinding zone, where they areheld in suspension. The lower fan acts as an exhauster anddraws the finely divided particles through the finishingscreen which completely encircles the separating material leaving the separating chamber is drawn intothe lower fan housing, from which it is discharged by meansof the action of the lower
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
