Froth floatation process

STATEMENT-1 : CuSO_(4) acts as froth activator in froth floatation process. STATEMENT-2 : Froth floatation method belong with benefecation of metallurgy. STATEMENT-3 : NaCN as depresent to form complex with ZnS out of PbS and ZnS .

One of the processes used for concentration of ores is Froth floatation process. This process is generally used for concentration of sulphide ores. Sometimes in this process we add NaCN as a depressant. NaCN is generally added in case of ZnS and PbS minerals. what is the purpose of addition of NaCN during the process of Froth floatation?

(a) Write the principle of method used for the refining of germanium (b) Out of PbS and PbCO_(3) (ores of lead), which one is concentrated by froth floatation process preferably ? (c) What is the significance of leaching in the extraction of aluminium ?

(a) Write the principle of vapour phase refining. (b) Write the role of dilute NaCN in the extraction of silver. (c) What is the role of collectors in the froth floatation process? Give an example of a collector.

The chief ore of Zn is the sulphide ZnS. The ore is concentrated by froth floatation process and then heated in air to convert ZnS to ZnO 2ZnS+3O_3 rarr 2ZnO+2SO (80% conversion) ZnO+H_2SO_4 rarr Zn SO_4+H_2O (100% conversion) and 2ZnSO_4+2H_2O rarr 2Zn+2H_2SO_4+O_2 (80% conversion).The number of moles of ZnS required for producing 2 moles of Zn will be :

Froth flotation process used for the concentration of sulphide ore.

Froth flotation process is generally employed for _____ ores.

Froth flotation process may be used to increase the concentration of mineral in:

The incorrect statement regarding forth floatation process is

By froth flotation process, carbonate and hydroxide ores are concentrated. In froth flotation process, pine oil is used as it preferentially wets the gangue particles.