Hydrometallurgy

INTRODUCTION Chromium is used in many industrial processes. For example, chromium is used in or so coats to make them harder and to a greater extent disgustful to corrosion and oxidation. Chromium is whizz of 4 elements anchor in Chromite. Chromite is one of the major ores that make up the res publicas mantle. Chromite is iron magnesium chromium oxide. In some out of date cases, magnesium is embossmentd for iron. Also aluminum and ferrous ions can substitute chromium in a reaction. Hydrometallurgy is a form of extractive metallurgy that utilizes sedimentary resultant chemistry for the recovery of metals from salts, minerals, or ores. Extraction is a process in which metal is outside from an ore by profligacy the metal in a solvent, and so recovering the metal from the solution (This is done by licentiousness the metal into an acerb or water). To isolate certain metals you charter to take into note that some be amphoteric. Amphoterism is the reactivity of a substance with two acids and natess, acting as an acid in the figurehead of a base and as a base in the presence of an acid. A few amphoteric metals ar beryllium, tin, lead, aluminum, and surface. When aqueous zinc nitrate is reacted with a limited number of potassium hydroxide, insoluble zinc hydroxide forms. 2 [pic] + [pic] [pic] Zn[pic] [Eq.

1] atomic number 30 hydroxide behaves as a base when it reacts with acids to form salts and water. In a solution containing excess [pic ] ions, Zn[pic] acts like an acid and dissol! ves forming the interlocking ion[pic]. 2 [pic] + Zn[pic] [Zn[pic]][pic] [Eq. 2] Reduction-oxidation, more commonly known as oxidoreduction, reactions occur when one or more electrons are transferred between reactant species. In these reactions the reactants that are oxidized lose electrons and the other reactants that kick upstairs electrons are reduced. In these reactions one of the reactants is oxidized thus the...If you want to get a full essay, order it on our website: BestEssayCheap.com

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