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Aluminum sulfate, commonly called alum, is produced as a concentrated aqueous solution from bauxite ore by reaction with aqueous sulfuric acid, followed by a three-stage, countercurrent washing operation to separate soluble aluminum sulfate from the insoluble content of the bauxite ore, followed by evaporation. In a typical process, 40,000 kg/day of solid bauxite ore containing 50 wt% A1203 and 50% inert is crushed and fed together with the stoichiometric amount of 50 wt% aqueous sulfuric acid to a reactor, where the A1203 is reacted completely to alum by the reaction
The slurry effluent from the reactor (digester), consisting of solid inert material from the ore and an aqueous solution of aluminum sulfate is then fed to a three-stage, countercurrent washing unit to separate the aqueous aluminum sulfate from the inert material. If the solvent is 240,000 kg/day of water and the underflow from each washing stage is 50 wt% water on a solute-free basis, compute the flow rates in kilograms per day of aluminum sulfate, water, and inert solid in each of the two product streams leaving the cascade. What is the percent recovery of the aluminum sulfate? Would the addition of one more stage beworthwhile?
in the direct steelmaking reactor based on the reduction of an oxidizing foaming slag by char carbon particles and
Consider an inventor who claims to have invented a device which, upon activation, becomes colder when a liquid solution crystallizes spontaneously at constant pressure. Considering the laws of thermodynamics, should a government patent office deny hi..
Job Analysis of a Chemical Engineer, Develop documentation for human resources professionals to manage a specific employment position. The materials you create would assist human resources professionals to choose
What is the drawdown at the perimeter of the well pumping 225 gpm when both wells are operating?
Determine the minimum required numerical value of the dimension b of the posts in term of mm and
Name the micro structural products of 4340 alloy steel specimens that are first completely transformed to austenite, then cooled to room temperature at the following rates:
Calculate the energy required to heat 1kg of CO 2 from 400ºC to 600ºC at a constant pressure of 1atm using:-
Negligible heat is transferred from the nozzle to its surroundings. The approach velocity of the steam is negligible. The specific enthalpy of steam is 2974J/kg at 260°C and 7bar and 2860kJ/kg at 200°C and 4bar. Use the open-system energy balance ..
with an atomic weight of 51.9405 amu, 9.50% of 53Cr, with an atomic weight of 52.9407 amu, and 2.37% of 54Cr, with an atomic weight of 53.9389 amu. On the basis of these data, confirm that the average atomic weight of Cr is 51.9963 amu.
Important information about Vapor pressure, At the top of Long's Peak in the Rocky Mountains (a) what is the vapor pressure if boiling a container of eggs (without a lid) occurs
collect two journal articles related to process modeling/ simulation and review each article to summarize the contents. present the summary in paragraphs explaining the methodology, process and experimental procedure used in the study
In terms of heat treatment and the development of microstructure, what are two major limitations of the iron-iron carbide phase diagram?
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