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| Study on Treatment of Waste Printed Circuit Board by Oxygen Enrichment Top Blowing Bath Smelting |
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Received:May 22, 2019
Revised:May 27, 2019
Accepted:May 27, 2019
Published Online:August 16, 2019
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| DOI：doi：10.3969/j.issn.1007-7545.2019.09.018 |
| KeyWord:waste printed circuit boards (WPCBs); oxygen enrichment top blowing; bath smelting; secondary metal; dioxins |
| Author | Institution |
| Liu Feng-hua |
中节能工程技术研究院有限公司 |
| Huang Wen |
中节能汕头再生资源技术有限公司 |
| Ding Yong |
中节能汕头再生资源技术有限公司 |
| Zou Jie-fu |
中节能工程技术研究院有限公司 |
| Liu Jian-ping |
中节能工程技术研究院有限公司 |
| Zhou Li-jie |
中节能工程技术研究院有限公司 |
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| Abstract: |
| Based on resource properties of valuable metals and energy characteristics for resin with WPCBs, the principle and route of top blowing bath melting for WPCBs were demonstrated. Technical and economic value of WCBs smelting in oxygen enrichment top blowing were verified from four aspects, i.e., slag type, oxygen enrichment smelting, secondary combustion of flue gas, and removal of acid gas from exhaust gas. WPCBs are successfully and efficiently treated by recycling with top blowing bath melting. WPCBs melting technology consists of SiO2-CaO-FeO-Al2O3 metallurgical slag type, smelting with oxygen enrichment, reduction dioxins through high temperature combustion, and removing acid gas with complex reagent. It also provides a new way of industrialization for resource regeneration of copper-based solid waste such as WPCBs. |
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