载金炭微观研究

炭浸厂活性炭经多次循环使用，活性明显降低，为查明原因，采用光学显微镜和扫描电镜等手段研究了载金炭微观结构。微观研究表明，方解石在炭表面、表层及近表层孔隙中大量存在，且含量呈由表及里减少的趋势。铜吸附以炭片空的孔隙及非孔隙部位为主。活性炭碘值最大影响因素是含钙量，其次是含铜量。根据活性炭吸附和解析原理，结合载金炭微观研究，提出改善活性炭性能的措施。

Study on Microcosmic of Gold Loaded Active Carbon

Having been repeated used in carbon-in-leach plant,the actived carbon＇s activity decreased significantly,to find out the cause,author study on gold loaded actived carbon microstructure by optical microscope,SEM and other means.The microscopic study shows that lots of calcite exists in the carbon surface,the surface and near surface pores,and the content of calcite has a decreasing trend from the outside to the inside,and the copper adsorption mainly happened in carbon empty pores and non pore.The biggest factor that affecting the activated carbon＇s iodine value is the calcium content,followed by copper content.According to the activated carbon adsorption and desorption principle,and the study on gold loaded actived carbon,the authors proposed the methods to improve the properties of active carbon.