1 results about "Cesium sulfate" patented technology

The application provides a method for preparing high-purity lithium hydroxide monohydrate and recycling rubidium and cesium, comprising the following steps: (1) mixing, ball-milling and roasting lithium ore, a sulfate and an additive at high temperature to obtain clinker; (2) crushing and grinding the clinker in step (1) and using water to obtain a leaching solution; (3) adding the leaching solution in step (2) into a three-chamber electrolytic cell for constant-current electrolysis to obtain an anode liquid, an intermediate liquid and a cathode liquid; (4) obtaining sulfuric acid from the anode liquid, evaporating and concentrating the intermediate liquid, step-by-step cooling and crystallization to obtain rubidium sulfate, cesium sulfate and sodium-potassium sulfate for roasting in step (1), and evaporating and concentrating the cathode liquid to obtain high-purity lithium hydroxide monohydrate. The high-purity lithium hydroxide monohydrate can be obtained through high selectivity of lithium ion solid-state electrolyte thin film to lithium, the utilization rate of potassium, rubidium and cesium is improved, the whole process is green and environmentally friendly, the comprehensive utilization rate of lithium ore is improved, and the product value is high.