Process for recycling sulphuric acid containing metal sulphate

Details Process for recycling sulphuric acid containing metal sulphate Process for recycling sulphuric acid containing metal sulphate

C - Chemistry, Metallurgy

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C01B 17/90 (2006.01) C22B 3/08 (2006.01) C22B 3/22 (2006.01) C22B 34/12 (2006.01) C23G 1/36 (2006.01)

Patent

CA 1288211

A process for recycling sulphuric acid containing metal sulphate ABSTRACT OF THE DISCLOSURE The present invention provides a process for recycling used sulphuric acid containing metal sulphates by evaporating the dilute sulphuric acid containing the dissolved metal sulphates to a content of from 40 to 85% of H2SO4, based on salt-free acid, separating the metal sulphates by filtration and rousing the separated sulphuric acid, the filtration taking place under excess pressure and compressed air being blown through the filter cake thereby formed for demoisturization. Le A 23 661

503907

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