In this research, a novel and effective process for waste CRT funnel glass treatment was developed. The key to this process is removal of lead from the CRT funnel glass by high-temperature melting process. Sodium carbonate powder was used as a fusion agent, sodium sulfide serves as a catalytic agent and carbon powder acts as reducing agent. Experimental results showed that lead recovery rate increased with an increase in the amount of added sodium carbonate, sodium sulfide, carbonate, temperature and holding time initially, and then reached a stable value. The maximum lead recovery rate was approximately 94%, when the optimum adding amount of sodium carbonate, sodium sulfide, carbonate, temperature and holding time were 25%, 8%, 3.6%, 1200 °C and 120 min, respectively. In the high-temperature melting process, lead silicate in the funnel glass was firstly reduced, and then removed. The glass slag can be made into sodium and potassium silicate by hydrolysis process. This study proposed a practical and economical process for recovery of lead and utilization of waste glass slag.

中文翻译：

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通过高温熔融工艺从废CRT漏斗玻璃中回收铅

在这项研究中，开发了一种新颖且有效的CRT漏斗玻璃废液处理方法。此过程的关键是通过高温熔融过程从CRT漏斗玻璃中除去铅。碳酸钠粉末用作熔融剂，硫化钠用作催化剂，碳粉用作还原剂。实验结果表明，铅的回收率随碳酸钠，硫化钠，碳酸钠的添加量，温度和保温时间的增加而增加，然后达到稳定值。当碳酸钠，硫化钠，碳酸钠，温度和保持时间的最佳添加量分别为25％，8％，3.6％，1200°C和120分钟时，最大铅回收率约为94％。在高温熔化过程中 首先将漏斗玻璃中的硅酸铅还原，然后去除。可以通过水解工艺将玻璃渣制成硅酸钠和硅酸钾。这项研究提出了一种回收铅和利用废玻璃渣的实用而经济的方法。