Heavy Metals: Copper | Ask Mattrab Search

how is metal copper extracted from its pyrite ore?

It can be extracted from copper pyrite which goes through the following step:

1. Crushing and pulverization:The big size of the ore is crushed and it is changed into a fine powder then it is taken for concentration.

2. Concentration:The obtained powder ore is concentrated by the froth floatation process. Then it is taken for roasting.

3. Roasting:It is then heated strongly in a reverberatory furnace. The volatile impurities such as sulphur, arsenic, etc are removed and pyrite ore is converted...

Study of Heavy Metals - Iron, Copper, Silver, Zinc

Why is calcium carbide mixed with sand?

Calcium carbide ( $C a C_{2}$ ) reacts with water to produce acetylene ( $C_{2} H_{2}$ ):

$C a C_{2} (s) + 2 H_{2} O (g) C a (O H)_{2} (s) + C_{2} H_{2} (g)$

When it is used to produce acetylene, however, it is mixed with sand because the reaction between CaC and HO is quite exothermic and this causes two issues:

Metallurgy of Copper

Extracting copper from its oresThe method used to extract copper from its ores depends on the nature of the ore. Sulfide ores such as chalcopyrite ( CuFeS2 ) are converted to copper by a different ...

GIBB'S FREE ENERGY

For chemical systems, the value of ΔS was not always possible to determine. As a result, a new thermodynamic function was needed to predict the direction of spontaneity. J. Gibbs introduced a new ...

Hess's law and it's applications

G.H. Hess, a Russian chemist, gave a law about the heat of reaction. It States that the total amount of heat evolved or absorbed in a reaction is same whether the reaction takes place in one step o...

Enthalpy

EnthalpyThe energy stored in a substance that can be available in the form of heat is called enthalpy or heat constant. It indicated by the symbol H.MathematicallyH = E + PV ………….(i)Where E = inter...

h

Related Students

Sarthak Shakya 6 Followers