METHOD OF MANUFACTURING HIGH-PURITY INORGANIC MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a method of manufacturing a high-purity inorganic material at a lower cost than conventional method. SOLUTION: The method utilizes the fact that when two materials left still having different solubilities (sum of chemical potentials) of impurity in a state wherein the impurity can be mobile by diffusion such as contact state, the diffusion of the impurity between the two materials is progressed until the chemical potentials become same. A material (capturing material) having a lower sum of chemical potentials (having a higher solubility) than the inorganic material to be purified for the constant concentration of the impurity and the inorganic material are contacted, and after the impurity contained in the inorganic material was transferred by diffusion to the capturing, the material having the dissolved impurity is removed and a high-purity inorganic material is obtained.