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A froth flotation process is used to concentrate copper ore. It is a two stage process with a rougher stage followed by a cleaner stage. The cleaner tailings are returned to the rougher flotation. Both stages are non-reactive unit operations and both operate at steady-state. the analytical profile of the entire flotation circuit is:
The rougher flotation feed grade is 0.50%CuThe rougher concentration grade is 11.9%CuThe rougher tailings conain 0.10%CuThe final cleaner concentrate grade is 33.0%CuThe cleaner tailings contain 4.5%Cu
a. Calculate the overall copper recovery for this process.
b.Calculate the copper recovery inthe cleaner flotation operation.
c. assuming the flotation process treats 75 tons/hr of copper ore, calculate the circulating load (in tons/hr) of cleaner tailings that return to the rougher flotation under steady-state operation.
A Fe-.25 w/o Carbon alloy is sloly cooled to 700 degrees C. What is the composition of the Ferrite(alfa) phase and what is the compositon of the cementite(Fe3C) phase. Whate are the relative fractions of ferrite and cementite
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THE HOME DEPOT IN RED HOOK ,BROOKLYN IS LOOKING TO RENOVATE THEIR STEEL ROOF TRUSS.YOU HAVE BEEN ASKED TO DETERMINE THE CENTROID,MOMENT OF INERTIA,SECTION MODULUS AND RADIUS OF GYRATION OF THE DOUBLE ANGLE.
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Testing has already been completed on the water and the Usage Rate for the carbon is 0.4 pounds of carbon per 1000 gallons of water treated. The required EBCT is 20 minutes and the carbon longevity must be at least 6 months.
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