| 从复杂银阳极泥中提取金、钯工艺优化与研究 |
| |
| 引用本文： | 潘从明,李明,黄虎军,魏建强,李进武,冯岩. 从复杂银阳极泥中提取金、钯工艺优化与研究[J]. 黄金科学技术, 2014, 22(4): 118-123. DOI: 10.11872/j.issn.1005-2518.2014.04.118 |
| |
| 作者姓名： | 潘从明 李明 黄虎军 魏建强 李进武 冯岩 |
| |
| 作者单位： | 金川集团有限公司贵金属冶炼厂，甘肃 金昌 737104 |
| |
| 摘 要： | 复杂银阳极泥回收金工艺是通过对其水溶液氯化得到分金液，使用亚钠进行还原得到合格金粉，由于外购原料增多，经水溶液氯化得到的分金液含有铂钯，分金液亚钠还原效率仅能控制在65%左右，需二次亚钠还原回收金。然而，得到的二次金粉中钯含量超标，返工易富集循环，不利于钯回收。本研究改进了复杂银阳极泥氯化分金液在进行亚钠一次还原后提取金、钯的工艺，具体工艺流程：首先，通过小型试验对还原后液开展DBC萃金并提纯金工艺，萃余液在进行传统的提取钯工艺的基础上，采用水合肼还原二氯二氨络亚钯得到钯黑。之后，进行工业扩大试验，确定最佳工艺技术条件。整个工艺过程中，金和钯的直收率分别为99.52%和94.53%，技术指标良好。
|
| 关 键 词： | 亚钠还原 DBC萃金 水合肼还原 二氯二胺络亚钯 |
| 收稿时间： | 2014-05-30 |
| 修稿时间： | 2014-06-20 |
Research and Optimization on Process of Extraction Gold and Palladium from the Complex Silver Anode Slime |
| |
| PAN Congming,LI Ming,HUANG Hujun,WEI Jianqiang,LI Jinwu,FENG Yan. Research and Optimization on Process of Extraction Gold and Palladium from the Complex Silver Anode Slime[J]. Gold Science and Technololgy, 2014, 22(4): 118-123. DOI: 10.11872/j.issn.1005-2518.2014.04.118 |
| |
| Authors: | PAN Congming LI Ming HUANG Hujun WEI Jianqiang LI Jinwu FENG Yan |
| |
| Affiliation: | Precious Metal Smelter of Jinchuan Group Co.，Ltd.，Jinchang 737104，Gansu，China |
| |
| Abstract: | Extraction gold from the complex silver anode slime is that points of gold liquid can be obtained by chloridizing the aqueous solution of the silver anode slime, and then qualified gold powders are obtained after reducing sodium nitrite.Because of the more outsourcing raw material, obtained the points of gold liquid contain platinum as well as palladium, the efficiency of sodium nitrite reduction of the liquid can only be controlled around 65%, thus sodium nitrite reduction for the second time is required.However, the content of palladium in the gold powders exceed standard, and the reword can lead to enrichment of circulation, which will go against the recycle of palladium.Extraction gold and palladium from the complex silver anode slime after sodium nitrite reduction for the first time.Firstly, on the basis of traditional technology of extraction in raffinate and small text on DBC extraction of gold, and we apply palladium black hydrazine hydrate to reduce two chlorine two ammino and palladium so as to get palladium black.And then Industry expanding test is carried out in order to identify the best condition during the process.Overall, technical indicators are all better, additionally, direct recovery efficiency of gold and palladium are 99.52% and 94.53%, respectively. |
| |
| Keywords: | sodium nitrite reduction DBC extraction of gold hydrazine hydrate reduction dichloro diamine collaterals and palladium |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《黄金科学技术》浏览原始摘要信息 |
|
点击此处可从《黄金科学技术》下载免费的PDF全文 |
|
