4th Edition

ISBN: 9781119330745

Author: FELDER

Publisher: WILEY

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Textbook Question

Chapter 5, Problem 5.28P

In froth ?otation, air is bubbled through an aqueous solution or slurry to which a foaming agent (soap) has been added. The air-soap bubbles carry ?nely dispersed solids and hydrophobic materials such as grease and oil to the surface where they can be skimmed off in the foam.

An ore-containing slurry is to be processed in a froth ?otation tank at a rate of 300 tons/h. The slurry consists of 20.0 wt% solids (the ore, SG = 1.2) and the remainder an aqueous solution with a density close to that of water. Air is sparged (blown through a nozzle designed to produce small bubbles) into the slurry at a rate of 40.0 ft³(STP)/1000 gal of slurry. The entry point of the air is 10 ft below the slurry surface. The tank contents are at 75°F and the barometric pressure is 28.3 inches of Hg. The sparger design is such that the average bubble diameter on entry is 2.0 mm.

(a) What is the volumetric ?ow rate of the air at its entering conditions?

(b) By what percentage does the average bubble diameter change between the entry point and the slurry surface?

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Chapter 5, Problem 5.27P

Chapter 5, Problem 5.29P

Chapter 5 Solutions

ELEM.PRIN.OF CHEMICAL PROC.-W/ACCESS

Ch. 5 - A liquid mixture containing 40.0 wt% n-octane and...Ch. 5 - Prob. 5.2P Ch. 5 - Prob. 5.3P Ch. 5 - Prob. 5.4P Ch. 5 - Prob. 5.5P Ch. 5 - Prob. 5.6P Ch. 5 - Prob. 5.7P Ch. 5 - Prob. 5.8P Ch. 5 - Prob. 5.9P Ch. 5 - Prob. 5.10P

Ch. 5 - Prob. 5.11P Ch. 5 - Prob. 5.12P Ch. 5 - Prob. 5.13P Ch. 5 - Prob. 5.14P Ch. 5 - Prob. 5.15P Ch. 5 - Prob. 5.16P Ch. 5 - Prob. 5.17P Ch. 5 - Prob. 5.18P Ch. 5 - Prob. 5.19P Ch. 5 - A device has been designed to measure the flow...Ch. 5 - Prob. 5.21P Ch. 5 - Prob. 5.22P Ch. 5 - Spray drying is a process in which a liquid...Ch. 5 - Prob. 5.24P Ch. 5 - Lewis12 describes the hazards of breathing air...Ch. 5 - A stream of air at 35°C and a gauge pressure of...Ch. 5 - Prob. 5.27P Ch. 5 - In froth ?otation, air is bubbled through an...Ch. 5 - Prob. 5.29P Ch. 5 - Prob. 5.30P Ch. 5 - Bread is typically made by ?rst dissolving...Ch. 5 - Prob. 5.32P Ch. 5 - Prob. 5.33P Ch. 5 - Prob. 5.34P Ch. 5 - Prob. 5.35P Ch. 5 - Prob. 5.36P Ch. 5 - Prob. 5.37P Ch. 5 - Prob. 5.38P Ch. 5 - Prob. 5.39P Ch. 5 - A spray-drying operation similar to that described...Ch. 5 - Prob. 5.41P Ch. 5 - Fermentation is a biochemical process in which a...Ch. 5 - Prob. 5.43P Ch. 5 - Prob. 5.44P Ch. 5 - Ethane at 25°C and 1.1 atm (abs) flowing at a rate...Ch. 5 - The ?ow of air to a gas-?red boiler furnace is...Ch. 5 - Prob. 5.47P Ch. 5 - The oxidation of nitric oxide NO+12O2NO2 takes...Ch. 5 - Prob. 5.49P Ch. 5 - 5.50.19 In chemical vapor deposition (CVD), a...Ch. 5 - A gas turbine power plant receives a shipment of...Ch. 5 - Prob. 5.52P Ch. 5 - 5.53.20 Chemicals are stored in a laboratory with...Ch. 5 - Prob. 5.54P Ch. 5 - Prob. 5.55P Ch. 5 - A stream of ho dry nitrogen flows through a...Ch. 5 - Prob. 5.57P Ch. 5 - You have purchased a gas cylinder that is supposed...Ch. 5 - The current global reliance on fossil fuels for...Ch. 5 - Two humid gas streams are combined in a heated...Ch. 5 - Most of the concrete used in the construction of...Ch. 5 - The ultimate analysis of a No. 4 fuel oil is 86.47...Ch. 5 - A stream of liquid n-pentane flows at a rate of...Ch. 5 - Alka-Seltzer( is an over-the-counter medicine used...Ch. 5 - Hydrogen sul?de has the distinctive unpleasant...Ch. 5 - The quantity of sulfuric acid used globally places...Ch. 5 - A small power plant produces 500 MW of electricity...Ch. 5 - You have been assigned the task of measuring the...Ch. 5 - Prob. 5.69P Ch. 5 - Methanol is synthesized from carbon monoxide and...Ch. 5 - Prob. 5.71P Ch. 5 - Prob. 5.72P Ch. 5 - Steam reforming is an important technology for...Ch. 5 - A ?owchart of a methanol synthesis process is...Ch. 5 - The measured volumetric flow rate of ethane at...Ch. 5 - Prob. 5.76P Ch. 5 - Methanol is to be delivered to a process unit at a...Ch. 5 - Prob. 5.78P Ch. 5 - Prob. 5.79P Ch. 5 - Prob. 5.80P Ch. 5 - Prob. 5.81P Ch. 5 - Prob. 5.82P Ch. 5 - Prob. 5.83P Ch. 5 - Prob. 5.84P Ch. 5 - Prob. 5.85P Ch. 5 - Prob. 5.86P Ch. 5 - Prob. 5.87P Ch. 5 - Prob. 5.88P Ch. 5 - Prob. 5.89P Ch. 5 - A fuel cell is an electrochemical device that...Ch. 5 - In a metered-dose inhaler (MDI), such as those...Ch. 5 - Prob. 5.92P Ch. 5 - Prob. 5.93P Ch. 5 - Approximately 150 SCFM (standard cubic feet per...Ch. 5 - Prob. 5.95P Ch. 5 - Prob. 5.96P Ch. 5 - Prob. 5.97P Ch. 5 - The product gas from a coal gasification plant...Ch. 5 - Prob. 5.99P Ch. 5 - Prob. 5.100P Ch. 5 - A gas mixture consisting of 15.0 mole% methane....Ch. 5 - A system has been devised to store acetonitrile...Ch. 5 - Prob. 5.103P Ch. 5 - Prob. 5.104P

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