Question
What are common methods of concentration of an ore?
✓
Answer
The concentration of an ore involves different methods depending upon the differences in physical properties of compounds or the metal present and the nature of the gangue.
The common methods of concentration of ore are as follows :
- Gravity separation or hydraulic washing :
This can be carried out by two processes as follows :- Hydraulic washing by using Wilfley’s table method
- Hydraulic classifier methods.
- Magnetic separation
- Froth floatation process.
- Leaching.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
What are the physical properties of $H _2 SO _4$ ?
→Describe the action of the following on chlorobenzene :
(1) Methyl chloride in the presence of anhydrous $AlCl _3$
(2) Acetyl chloride in the presence of anhydrous $AlCl _3$.
→(1) Methyl chloride in the presence of anhydrous $AlCl _3$
(2) Acetyl chloride in the presence of anhydrous $AlCl _3$.
Write a note on a zero order reaction.###What is a zero order reaction? Explain.
Alkyl halides are generally not prepared by free radical halogenation of alkanes.
Draw labelled diagram of H₂-O₂ fuel cell. Write two applications of fuel cell.
In acidic solution, sucrose is converted to a mixture of glucose and fructose in pseudo first order reaction. It has been found that the con-centration of sucrose decreased from $20 mmol _{ L ^{-}}$ 1 to $8 mmol L ^{-1}$ in 38 minutes. What is the half-life of the reaction?
→Heat of solution of $NaCl$ is $3.9 kJ mol ^{-1}$. If the lattice energy of $NaCl$ is $787 kJ mol ^{-1}$, calculate the hydration energies of ions of the salt.
→Define and explain osmosis.
Write IUPAC names of
Write the reactions for the preparation of carbolic acid from aniline.