| The grades of gold and silver in a quartz vein type gold ore from Hebei are 5.4 g/t and 6.4 g/t, respectively. According to the properties of the ore, flotation tests were carried out. Under the optimal chemical system conditions, the recovery rates of concentrated gold and silver were 78.9% and 35.6% respectively, and the grades of gold and silver were 44.0 and 23.5 g/t, respectively. In order to improve the ore beneficiation index, the combined experiments of heavy separation and flotation technology was carried out. Compared with the single flotation process, the recovery rates of gold and silver from the mixed concentrate were increased by 6.8% and 2.2%, respectively. |
