MetallurgyMedium
Question
NaCN is sometimes added in the froth flotation process as a depressant when ZnS and PbS minerals are expected because :
Options
A.Pb(CN)2 is precipitated while no effect on ZnS.
B.ZnS forms soluble complex Na2[Zn(CN)4] while PbS forms froth
C.PbS forms soluble complex Na2[Pb(CN)4] while ZnS forms froth.
D.NaCN is never added in froth floatation process.
Solution
ZnS + 4NaCN → Na2[Zn(CN)4] + Na2S
PbS + NaCN → No such complex formation.
PbS + NaCN → No such complex formation.
Create a free account to view solution
View Solution FreeMore Metallurgy Questions
The element which could be extracted by electrolytic reduction of its oxide dissolved in a high temperature melt is:...The rocky and silicious matter associated with an ore is called :...Match the reactions taking place in blast furnace with temperature - range of operations Column - I Column - II(a) C + C...Dolomite is mineral whose formula is :...The smelting of iron in a blast furnace involves, which of the following process/(es) ?...