Process for the Manufacturing of Copper Sulphate

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

Copper Copper Carbon Carbonate ate CuC CuCo3 o3 Or Copper Copper (ll) Carbonate Carbonate CuCo3 CuCo3 Cu(Oh)3 Cu(Oh)3 Sulphu Sulphuric ricaci acid d H2SO4 H2SO4 Water ater H2O 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 CuCO3 + H2SO4 + 4 H2O = CuSO45H2O CuSO45H2O + CO2 2) CuCO3Cu( CuCO3Cu(0H)2 0H)2 + 2H2SO4+6H 2H2SO4+6H20 20 = 2CuSO45H20 2CuSO45H20+ + CO2

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

H.D.P H.D.P.E .E . tank tank S.S Stirr Stirred ed vessel vessel with heatin heating g arrangeme arrangement nt ss 316 Centrifug Centrifuge e rubber rubber lined lined or ss 316 Drye Dryerr ss 31 316 6 M.s tank Open Open pans pans ss 30 304 4

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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 H.D.P.E tanks for further slow crystallization. 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 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 effluent is generated as all mother liquor liquor is recycle back to recover recover the

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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.