MetallurgyHard
Question
Chemical leaching is useful in the concentration of :
Options
A.carnallite
B.bauxite
C.galena
D.zinc blende
Solution
Al2O3(s) + 2NaOH(aq) + 3H2O(l) → 2Na[Al(OH)4](aq)
2Na[Al(OH)4] (aq) + CO2(g) → Al2O3.xH2O(s) + 2NaHCO3(aq)
Al2O3.xH2O(s)
Al2O3(s) + xH2O(g)
2Na[Al(OH)4] (aq) + CO2(g) → Al2O3.xH2O(s) + 2NaHCO3(aq)
Al2O3.xH2O(s)
Al2O3(s) + xH2O(g) Create a free account to view solution
View Solution FreeMore Metallurgy Questions
Refractory materials are generally used in furnaces because...Which of the following is not the ore of aluminium ?...The major role of fluorspar (CaF2) which is added in small quantities in the electrolytic reduction of alumina dissolved...Mercury is purified by:...Aluminium is extracted from alumina (Al2O3) by electrolysis of a molten mixture of :...