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研究了锰铁氧化矿吸附银氰络合物的行为 ,劫金试验采用不同初始浓度的Ag(CN) 2 - ,试验结果表明 ,这种矿石强烈地吸附银氰络合物 ,导致 8%～ 1 5 %的银氰络合物被吸附 ,并加速银氰的再沉积 ,影响银的回收 ,增加生产成本。并且这种吸附不同于银 (或者金 )氰络合物在活性炭或者其它矿物与脉石上的吸附。在较短的吸附时间和较低初始浓度的Ag(CN) 2 - (如 38.9mg/L和 89mg/L)条件下 ,存在三个可能的吸附步骤 ,即快速吸附和快速脱附以及二者之间的动态平衡。但是 ,在初始浓度较高 (如 1 65mg/L)条件下 ,其吸附步骤为快速吸附 ,比低浓度条件下稍慢 ,其吸附量和吸附速率随着吸附时间的延长将以更快的速度呈线性比例减少。
The behavior of silver and cyanide complex adsorbed on ferromanganese oxide was studied. Agrobacterium tumefaciens using Ag (CN) 2 - with different initial concentrations showed that the ore strongly adsorbed Ag (CN) 15% silver cyanide complex is adsorbed, and accelerate the redeposition of silver cyanide, affecting the recovery of silver, increasing production costs. And this adsorption differs from the adsorption of silver (or gold) cyanide complexes on activated carbon or other minerals and gangue. At shorter adsorption times and lower initial Ag (CN) 2 - (eg, 38.9 mg / L and 89 mg / L) conditions, there are three possible adsorption steps: rapid adsorption and rapid desorption and both The dynamic balance between. However, under the condition of high initial concentration (eg, 1 65mg / L), the adsorption step is rapid adsorption, which is slightly slower than the low concentration. The adsorption amount and adsorption rate will increase with the increase of adsorption time Linear proportion decreased.