Kidong Kim
Kunsan National University, Korea
Title: Valuable Recycling of Waste Glasses generated from LCD Industry
Biography
Biography: Kidong Kim
Abstract
The manufacturing of LCD panels and LCD glasses applied to information display devices, such as TVs, monitors, and mobile phones, only occurs in four Asian countries, Korea, Japan, Taiwan and China. A large amount of waste glasses is being generated from the LCD industry. These waste glasses can be divided into three categories: 1) LCD cullet from LCD glass manufacturers, 2) LCD process waste glasses (hereafter designated as LPWG) from LCD panel manufacturers, and 3) End LCD waste glasses from end-of-life LCD devices. Since LCD glasses are produced using relative high purity raw materials under consideration of display quality, they have not only few impurities but also high homogeneity. These two characteristics of LCD glasses can offer a valuable recycling possibility of their cullet or waste glass as a raw material for some commercial ceramic products from the viewpoint of raw material cost and saving of energy. In this work seven cases were investigated. Glasses or ceramics were produced in the laboratory using the industrial batches including LCD cullet or LPWG for flint bottle glass, fiber glass such as E glass and glass wool, heat resistant glass such as Pyrex and vetrious porcelain such as sanitary ware and ceramic tile. Some physicochemical properties related with production or product were determined for those glasses and ceramics, and the results were discussed. Now LCD cullet is being applied to all industrial plants for E glass in Korea. LPWG could be also a potential raw material to produce flint bottle and fiber glass.