A. Flocculation
B. Froth floatation
C. Jigging & tabling
D. None of these
Related Mcqs:
- Which of the following oxides is not present in hematite iron ore ?
A. Titanium oxide
B. Calcium oxide
C. Cobalt oxide
D. Manganese oxide - Gold ore concentration is mostly done using___________________?
A. Jigging
B. Tabling
C. Froth floatation
D. Elutriation - Ore concentration by jigging is based on the difference in the ______________ of the particles?
A. Specific gravities
B. Wettability
C. Shape
D. None of these - Raw materials are charged in the iron blast furnace using____________________?
A. Bucket elevator
B. Skip hoist
C. Screw conveyor
D. None of these - Pebble mills are tumbling mills widely used for grinding in the manufacture of paints & pigments and cosmetic industries, where iron contamination in the product is highly objectionable. Pebbles used in pebble mill are made of__________________?
A. Bronze
B. Stainless steel
C. Flint or porcelain
D. Concrete - Agglomeration of individual particles into clusters (flocs) is called flocculation. To prevent flocculation, the most commonly used dispersing agents are________________?
A. Carbonates
B. Sulphates
C. Silicates & phosphates
D. Bi-carbonates - _____________ is the most commonly used ‘filter aid’?
A. Diatomaceous earth
B. Fuller’s earth
C. Vermiculite
D. Semi-plastic clay - Which of the following minerals is not subjected to magnetic separation method ?
A. Rutile
B. Galena
C. Chromite
D. Siderite - In screen analysis, the notation +5 mm/-10 mm means particles passing through ____________________?
A. 10 mm screen and retained on 5 mm screen
B. 5 mm screen and retained on 10 mm screen
C. Both 5 mm and 10 mm screens
D. Neither 5 mm nor 10 mm screen - Which of the following is a vacuum filter ?
A. Filter press
B. Rotary disc filter
C. Batch basket centrifuge
D. Tank filter (Nutsche filter)
