Abstract: A method and composition for reducing the corrosion effect of aqueous mediums such as brines on ferrous metals by incorporating in the brine an effective amount of a mixture of a sulfur compound wherein the oxidation state of the sulfur is zero or less and a reducing sugar.

Abstract: Magnesium oxide is chlorinated in molten impure magnesium chlorine with chlorine gas by adding ferrous chloride to magnesium chloride brine, drying the brine, adding a mixture of calcined petroleum coke and charcoal to the dried brine, melting the product and chlorinating the formed melt. Ferrous chloride is added in amounts sufficient to provide from about 1.0% to 2.2% by weight of iron in the dried product. A highly reactive carbon source is added in amounts of from about 0.8 to 2.3% by weight and a carbon source that is less reactive than the highly reactive carbon source is added in amounts ranging from about 0.8 to 2.3% by weight of dried brine. Iron levels in the magnesium chloride melt may be adjusted upwardly by addition of a mixture of iron oxide and charcoal.A melt cell characterized by side entry electrodes disposed at angles from 40.degree. to 50.degree., an arched roof configuration, and an improved electrode refractory and ceramic sleeve construction is used to chlorinate the magnesium.

Abstract: Minute amounts of boron present in naturally occuring brines found in oceans, inland seas, salt lakes and the like are removed by treating the brine with calcium oxide.

Abstract: Minute amounts of boron present in naturally occurring brines found in oceans, inland seas, salt lakes and the like are removed by treating the brine with an oxide of aluminum.