The trihydroxide Co(OH) 3 is heated to form the oxide and then reduced with carbon (as charcoal) to form cobalt metal. Iron is obtained by precipitation with lime (CaO) while cobalt is produced as the hydroxide by precipitation with sodium hypochlorite (NaOCl)ĢCo 2+(aq) + NaOCl(aq) + 4OH -(aq) + H 2O → 2Co(OH) 3(s) + NaCl(aq) Treatment with sulphuric acid leaves metallic copper as a residue and disolves out iron, cobalt, and nickel as the sulphates. Normally the ore is "roasted" to form a mixture of metals and metal oxides. Elemental Cobalt: A silvery gray metal (exibits faint bluish tinge when polished), it has a density of 543.7 lbs/ft making it a little lighter than copper but. Industrially, however, it is normally produced as a byproduct from the produstion of copper, nickel, and lead. It is a silver-grey transition metal that lies to the right of iron, to the left of nickel, and above rhodium in the periodic table. The Co-bearing sulfur concentrate containing 0.68 Co, 33.26 Fe, and 36.58 S was obtained from V-Ti magnetite in the Panxi area of China by flotation. These include the sulphides and arsenides linnaeite, Co 3S 4, cobaltite, CoAsS, and smaltite, CoAs 2. In this study, oxidizing roasting, segregation roasting, and magnetic separation are used to extract cobalt and iron from refractory Co-bearing sulfur concentrate. Many ores contain cobalt but not many are of economic importance. Hydrometallurgical techniques such as heap leaching (HL), atmospheric leaching (AL), high-pressure sulfuric acid leaching (HPAL), Caron process, and direct nickel process (DNi) are the most common processes to treat lateritic ore 4. acid concentration, and time with low levels of phenol and pulp density. Laterite ore contributes to about 70 of the world’s land-based nickel resources. Isolation: it is not normally necessary to make cobalt in the laboratory as it is available readily commercially. In this paper, cobalt ore was leached with sulphuric acid in the presence of phenol.
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