5-2. Estimate the critical speed and horsepower requirements for a trommel screen, 3 m in diameter, processing refuse so as to run 25% full.
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5-2. Critical speed only (you do not have to estimate horsepower)
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- 3m X34x3MX Jm NA SORN 2kN Dnd the internal ores la m embern en, DH and Haa2. Dozer Production Calculation How long will it take for a track-type dozer w/straight blade to move 1,000 bcy's of dry earth 100 feet? Assume average blade load of 5 lcy Forward travel @ 2.5 mph Reverse travel @ 3 mph Assume maneuver time about 0.05 min Work 45-min/hour5-1. Suppose that a proposal is made to hand-sort all of the refuse from a town of 100,000 people. Estimate the personnel and cost required, and describe the problems involved in implementing such a program. 5-2. Estimate the critical speed and horsepower requirements for a trommel screen, 3 m in diameter, processing refuse so as to run 25% full. 5-3. If the angle of a trommel screen were increased (steeper), how would this affect the critical speed, horsepower, and efficiency? 5-4. Aluminum chips of uniform diameter 1.0 in. are to be separated from glass of 100% less than 0.5 in. by use of a single-deck reciprocating screen. The total feed rate is 1 ton/h, consisting of 0.1 ton/h of aluminum and 0.9 ton/h of glass. It is required to produce an aluminum fraction that is 99% pure (by weight). Find the area and size of screen required. 5-5. Using the aluminum/glass mixture specified in Problem 5-4, assume that the smallest glass particle of signifi- cance is 0.05 in. in diameter.…
- Waste contents are equally distributed everywhere in () PFR CSTRThe expected production of a pneumatic roller is 665 CCCY/h. The lift thickness is 8 inches, with a roller width of 10 feet. If the job efficiency is 85%, calculate the speed and number of passes required to maintain this production, provided that when the speed increases by 20%, two additional passes need to be added to maintain the same production.Before it is permissible for the dozer to "track" over an exposed pipe in order to get to the other side of the trench. O a. compacting O b.testing Oc backfillinE O d.commissioning
- calculati the B005 at 20°C of a waste water data- BOD bottle capacity following SEED CONTROL sample вол = 300 me TEST SAMPLE vol. of Seed added = Doi of Seed + DW = DO of seed + DW = 4.8 ome 8.2mg le mgle vol- of seed added = 2ml vol of sample added = 30 me Doi of SS + D.W + Sample = DOf of S.St D.W + sample = 6.1mg = 3.2 Il mgle. (25 points) A batch plant mixes 80 tons of asphalt mix with an average mixing cycle time of 1 min. Plant efficiency is 90%. Estimate plant production in ton/hr. Assuming that you have a sufficient number of trucks to haul the asphalt to the job site, can this plant keep up with a paver moving at 2mph and laying down a 20’ lane of a highway job that is to be compacted to 6” thickness with a density of 150 lb/cf?Mr. Jae Yeong wants to put up a plant rack for his mini garden using a recyclable material from neighboring construction site. The materials given allowed him to do so but with some repair (welding 2 aluminum blocks). Given that there should be an allowable specification requirement for the rack to serve its purpose. Determine the value of the largest P that can be applied. a 1.5 in 4.5 in a t 0.65 in Oallow 30 ksi Tallow 19 ksi
- Calculate the number of bags required for a shaker baghouse for removal of gypsum with the following process information and bag dimensions. Q, process gas exhaust rate 15,000 ft3/min Bag dimensions: bag diameter 6 in. bag height 12 ft How many bags are required?Propose a commercially available pump which may be used in the case of extremely abrasive and corrosive slurries. Its performance curve must be shown.Q) An engine lathe is used to turn a cylindrical work part 150 mm in diameter by 500 mm long. Cutting speed 2.50 m/s, feed 0.30 mm/rev, and depth of cut 3.0 mm. Determine (a) cutting time and (b) metal removal rate.