Copper corrosion in sulphuric acid at heat transferUnder the conditions of the spontaneous convection from the upper horizontal surface of disk-type copper electrodes the copper corrosion rate in a solution of 1 N H2SO4 +0.001 M K2Cr2O7 was measured. The effects of the surface temperature of ...
Atlantic Copper plays down concerns about sulphuric acid.The article reports on a statement from an Atlantic Copper official stating that the company can offload the sulphuric acid produced by its copper smelter even though Fertiberia has closed its plant in Huelva, Spain. Fertiberia is a Spanish...
Nonetheless, assuming the costs per tonne of So and H2SO4 are similar, sulphuric acid production from So is 67% cheaper than sulphuric acid (reaction 1, West-Sells et al., 2007). Microorganisms may also be used to biooxidize So in reactors to produce a “manufactured” stream of dilute ...
Dissolution of metallic copper in aqueous sulphuric acid-ferric sulphate solutions. Can. Metall. Q. 45, 243-248.Casas, J.M., Crisostomo, G., Cifuentes, L., 2006. Dissolution of Metallic Copper In Aqueous Sulphuric Acid - Ferric Sulphate Solutions. Canadian Metallurgical Quarterly 45, 243-248...
The MS-SAL process consists of a magnetic separation from ground matte to produce concentrate (magnetic separation stage), followed by the sulphuric acid leaching of the concentrate (sulphuric acid leaching stage). The sulphuric acid leaching of concentrate with oxygen also was studied in this work...
sulphuric acidquininepolarisation methodsThe effect of quinine (Q) and strychnine (S) on the corrosion of copper in sulphuric acid has been investigated using weight loss and polarisation methods. Q and S had a significant effect on the corrosion rate of copper, the maximum corrosion inhibition (...
300 mL toluene for 16 h. The Soxhlet extract and the liquid-liquid extract were combined and the combined solvents were evaporated in a rotary evaporator and dissolved into hexane. The sample was finally treated with concentrated sulphuric acid by shaking in a separating funnel to remove ...
Wastes generated during electro-refining are treated to recover gold and silver. After treatment by flotation, the finely-crushed ore is leached with sulphuric acid to dissolve uranium and any remaining copper. The leach liquor is processed in the solvent extraction plant to separate the residual co...
An experimental study is presented of leaching of a sulphide copper concentrate with aqueous ferric sulphate under oxygen pressure. The effects of oxygen pressure, sulphuric acid concentration and ferrous iron additions on the copper leaching rate have been determined. Partial pressure of oxygen has bee...
By using potassium hydroxide in glyoxylic acid solution, the Cannizzaro reaction rate is reduced, and the mechanical properties are improved. The Cannizzaro reaction involved in electroless copper plating using glyoxylic acid as reducing agent consumes additional hydroxyl and glyoxylic acid (Shacham-Diamond...