Abstract: The invention is directed to making a lithiated manganese dioxide using low and high temperature calcination steps.

Abstract: The invention is a process which provides a high purity lithiated manganese oxide (Li.sub.1+x Mn.sub.2-y O.sub.4) from chemically made MnO.sub.2. The lithiated manganese oxide has an especially effective utility for use as a cathodic material in rechargeable batteries. The process of the invention includes blending a lithium compound with a chemically made manganese dioxide to form a manganese dioxide/lithium compound blend. The lithium compound in the blend is at least about one mole of lithium for every mole of manganese dioxide. The manganese dioxide and lithium compound in the blend are reacted to provide an ion replaced product where lithium ions have replaced sodium and potassium ions in the MnO.sub.2 to form an ion replaced product. Thereafter, the ion replaced product is heated or calcined to provide the lithiated manganese oxide.

Abstract: The invention is directed to making a lithiated manganese dioxide using low and high temperature calcination steps.

Abstract: A process for recovering purified cesium chloride from a cesium aluminum silicate ore in which the ore is digested with aqueous hydrochloric acid and the silica solids removed to obtain an aqueous acidic digest solution of metal chlorides consisting of cesium chloride together with other metal chlorides, by(a) evaporating water from the digest solution to obtain a solid mixture of metal chlorides, including cesium chloride and hydrated aluminum chloride;(b) heating solid phase mixture at a temperature effective for converting the hydrated aluminum chloride to aluminum oxide without decomposing the cesium chloride;(c) extracting the resulting solids with water to obtain an aqueous extract of cesium chloride; and(d) separating the residual solids containing the aluminum oxide to produce a purified extract of cesium chloride.