a. copper
Choose the correct statement :
a. In froth floatation sodium ethyl xanthate act
b. In leaching the ore is converted into insolub
solution
c. Ammonia leaching is suitable for gold and s
d. Bauxite ore is subjected to acid leaching.
PAR
t answers:
What are steps involved in extraction of Crude
Write the role of Silica in the extraction of Co
What is blistered Conner?
Answers
Learn the options
Option A
Froth floatation process used for the concentration of sulphide ore uses sodium ethly xanthate, C2H5OCS2
Na as collector.
Other examples of collector include ethyl xanthate and potassium ethyl xanthate. They attach themselves to the grains of mineral by polar groups so that minerals become water repellent and pass on into the froth.
Option B
Leaching is a process widely used in extractive metallurgy where ore is treated with chemicals to convert the valuable metals within into soluble salts while impurity remain insoluble. These can then be washed out and processed to give the pure metal; the material left over is commonly referred to as tailings.
Option C
Gold and silver are extracted from their elemental state or from complex ores and alloys by leaching them with a solution containing ammonia, ammonium salts and one or more oxidants. The process is particularly effective for refractory gold ores including sulfide and carbonaceous ores.
Option D
leaching of alumina from bauxite:
(1) Bauxite ore and sodium carbonate are fused toghether to convert aluminium oxide into soluble sodium meta-aluminate.
(2) The filtrate is warmed and neutralised by passing carbon dioxide through the solution to precipitate aluminium hydroxide
What are steps involved in extraction of Crude
STEP 1: Preparing the Rig Site.
STEP 2: Drilling.
STEP 3: Cementing and Testing.
STEP 4: Well Completion.
STEP 5: Fracking.
STEP 6: Production and Fracking Fluid Recycling.
STEP 7: Well Abandonm
Write the role of Silica in the extraction of Co
The role of silica in the metallurgy of copper is to remove the iron oxide obtained during the process of extraction of pure copper from copper pyrite, SiO2 acts as acidic flux which combines with iron oxide(FeO) to form iron silicate (FeSiO3).
What is blistered Conner?
If the blister comes open accidentally, don't pull off the outer skin layer. Leave it alone to heal, and cover it with a blister plaster. As long as it is covered, the wound is protected from infection. A blister should not be opened because the blister roof protects against additional infection.
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