Process For The Manufacturing Of Copper Sulphate

PROCESS FOR THE MANUFACTURING OF COPPER SULPHATE RAW MATERIALS:1) 2) 3) 4)

Copper Carbonate CuCo3 Or Copper (ll) Carbonate CuCo3 Cu(Oh)3 Sulphuricacid H2SO4 Water H2O

Copper (ll) Carbonate Natural green powder Bulk density of 3.9gm/cm3 Molecular wt 221.11

Sulphuric Acid Colourless liquid Density o f Molecular Wt

1.8 gm/cm3 98

CHEMICAL REACTION:1) CuCO3 + H2SO4 + 4 H2O = CuSO45H2O + CO2 2) CuCO3Cu(0H)2 + 2H2SO4+6H20 = 2CuSO45H20+ CO2

EQUIPMENTS:1) 2) 3) 4) 5) 6)

H.D.P.E . tank S.S Stirred vessel with heating arrangement ss 316 Centrifuge rubber lined or ss 316 Dryer ss 316 M.s tank Open pans ss 304

PRODUCTION PROCESS:Dilute sulphuric acid (60%) is taken in a stirred vessel and copper carbonate is added slowly To the acid under stirring, at room temp. or vise versa . The ph of the solution is monitored and maintained at ph of 2. The carbon dioxide gas which comes out of the vessel is scrubbed in lime water. After the addition of copper carbonate is completed the reaction mass is allowed to digest And the ph is monitored the final ph is adjusted to 4. The reaction mass is then heated to 70 degrees or maintained at , for some time. The heat can be external or if the reactor is insulated the exotherm can supply with the increase of temp and then transferredto Open or closed H.D.P.E tanks for further slow crystallization. Lead strips are hanged in the bath Which aid in crystallization. The crystals are then centrifuged and the mother liquor is recycled back to the crystallization tank Or charged into the next batch or further concentrated to recover the residual copper sulphate The crystals from the centrifuge are dried or packed as is as per the nature of the copper sulphate Required.

EFFLUENT GENERATION:No liquid effluent is generated as all mother liquor is recycle back to recover the product GAS POLUTION;Only wood burning. For heating purpose if any.

Carbon dioxide formed in the the reaction is scrubbed in lime water to form calcium carbonate Which is a byproduct for the calcium chloride industry.