| 废品纱罩中钍的去除技术 |
| |
| 引用本文： | 石玉成,王承保.废品纱罩中钍的去除技术[J].辐射防护,1999,19(6):439-443. |
| |
| 作者姓名： | 石玉成 王承保 |
| |
| 作者单位： | [1]江苏省防疫站 [2]江苏省辐射环境监测管理站 |
| |
| 摘 要： | 本文介绍了纱罩生产厂在生产过程中说生的废品纱罩中钍的去除技术及其应用。经实验室实验，小试，中试直对工业规模纱罩除钍的主要工艺如下：废纱罩在５００Ｌ陶缸中经２ｍｏｌ／Ｌ硝酸两次浸泡及两次自来水清洗。实验结果透明，经上述 废纱罩的除钍率达９９．９７％，残留钍含量小于１６０Ｂｑ／ｋｇ，可作为一般废物用土时或其他方法处理；
|
| 关 键 词： | 纱罩 钍回收 除钍技术 汽灯 |
STUDY ON REMOVAL TECHNOLOGY FOR THORIUM IN THE WASTE GAS LAMP MANTLE |
| |
| Abstract: | The paper describes thorium removal technology and its application in the handling of the waste gas lamp mantle that produced during the production of gas lamp process.After laboratory test ,pilot test ,trial run and engineering scale use,the thorium removal technology is mainly as follows:soak the waste gas lamp mantle into the ceramic vat with the nitric acid solution twice and wash it with the tap water twice.The volume of the ceramic vat is 500 L and the concentration of the nitric acid solution is 2 mol/L.After handling,the thorium removal rate can reach 99.97% and the residual thorium will be less than 160 Bq/kg.The waste gas lamp mantle can be buried under the ground or be handled in the other ways just as the harmless waste.The nitric solution,in which gas lamp mantle has been soaked,should be extracted with TBP,then backextracted with diluted hydrochloric acid.After supplementing the thorium nitrate into the backextracted liquid,the liquid can be reused in the gas lamp mantle production.The waste water from the handling process can be handled together with waste water from production process. ( |
| |
| Keywords: | Gas lamp Mantle Thorium Thorium Removal) |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
