1. Harmless and resource recycling technology for waste cathode ray tube display cone glass

Hydrometallurgical technology is used to convert lead in cone glass into lead sulfate, a high-value-added chemical product. This process does not produce secondary pollution. The whole process can realize closed circulation of waste liquid. Compared with pyrometallurgical lead smelting technology, the cost is low and the technology is simple, easy to promote, and the added value of the product is high.

2. Key technologies for harmlessness and resource utilization of waste LCD

Based on the remarkable characteristics of high temperature and high pressure water, waste liquid crystal hydrothermal oxidation technology and polarizer hydrothermal conversion technology to produce acetic acid have been developed respectively.

3. Key technologies for recycling waste printed circuit board materials

Based on the significant density difference between metals and nonmetals and the characteristics of solid fluidization, the developed solid fluidization airflow transportation separation and enrichment device and process can achieve efficient separation and enrichment of metals and nonmetals on the circuit board, and the entire process has no polluting emissions. After separation, the recovery rate of the main metal copper is as high as 96%, and the total metal recovery rate is as high as 95%.

4. Comprehensive treatment process for waste lithium batteries

For failed lithium cobaltate, based on the fact that the ultrasonic cavitation effect can provide conditions such as transient local high temperature, high pressure, and hydroxyl radicals with strong oxidizing ability for chemical reactions, the failed lithium cobaltate is treated in an ultrasonic cavitation environment under ultrasonic action. One-step impurity removal and repair research. The first discharge specific capacity of the repaired lithium cobalt oxide reaches 130 mAh/g, and the first charge and discharge efficiency is more than 98%.

Application situation or application prospects：This project focuses on the toxic, harmful and valuable material components in used household appliances. With the help of the differences between the physical and chemical characteristics of these components, mechanical and physical methods are used to crush, dissociate, separate and enrich them, and hydrothermal technology, Pyrolysis technology, ultrasonic cavitation technology, etc. achieve harmlessness and high-value separation and enrichment components.