Advertisements
Advertisements
Question
Describe the role of the following in the process mentioned.
Sodium cyanide in froth floatation.
Solution
Sodium cyanide acts as a depressing agent in the froth floatation process. It prevents other metal sulphides from coming to the froth.
eg: NaCN depresses the floatation property ZnS present in Galena (PbS) by forming a layer of Zinc complex Na2[Zn(CN)4] on the surface of Zinc sulphide.
APPEARS IN
RELATED QUESTIONS
Roasting of sulphide ore gives the gas (A).(A) is a colourless gas. Aqueous solution of (A) is acidic. The gas (A) is ____________.
Which of the following statements, about the advantage of roasting of sulphide ore before reduction is not true?
Match items in Column – I with the items of Column – II and assign the correct code.
| Column – I | Column – II |
| A. Cyanide process | (i) Ultrapure Ge |
| B. Froth floatation process | (ii) Dressing of ZnS |
| C. Electrolytic reduction | (iii) Extraction of Al |
| D. Zone refining | (iv) Extraction of Au |
| (v) Purification of Ni |
Which one of the following ores is best concentrated by the froth floatation method?
Which of the following is used for concentrating ore in metallurgy?
The incorrect statement among the following is
Which type of ores can be concentrated by the froth floatation method? Give two examples for such ores.
Describe the role of the following in the process mentioned.
Silica in the extraction of copper.
In isolation of which one of the following metals from their ores, the use of cyanide salt is not commonly involved?
Which of the following ore is concentrated using group 1 cyanide salt?
