During the flotation process, selected tailings or sweeping foam products are commonly referred to as medium mines. In general, the grade and floatability of the medium ore are different from those of the original ore and concentrate. For the treatment of the middle mine, it is necessary to understand the situation of the continuous organism in the middle mine, the floatability of the medium mine, and the quality requirements of the concentrate. The more common treatment methods are: 2. The return of the mine to the grinding operation. When there are more connected organisms in the mine, it is better to return to the grinding machine for re-grinding. As shown in Figure 3. If the mine contains some ore particles and some of the monomer dissociated ore, it can be returned to the classification operation. In order to increase the scrubbing of the surface of the mine, it can also be returned to the mill. 4. Other treatment methods If the medium-mine mining flotation method has a good effect alone, it may be considered to be treated by chemical beneficiation . Coffee Accessories,Cookie Cutter Mould,Biscuit Cutter Mould,Silicone Biscuit Moulds Wuxi Swif International Trade Co., Ltd. , https://www.swifglobal.com
1. Return the middle mine to the appropriate location in front of the flotation. If the useful minerals in the medium mine are essentially dissociated, return them to the appropriate location in front of the flotation. When returning, you can use: 1) Return in sequence, as shown in Figure 1. That is, the middle mine obtained from the later operation returns to the previous operation in turn. I.e., when the useful minerals poor floatability, gold reselection in order to reduce return loss when the metal to ensure that recovery times in the mine reselection should be reduced in order to return ore processing should be appropriate. 2) The merge returns, as shown in Figure 2. All the mines will be merged back to all operations in the front of the flotation. When the mine is in good floatability, it is better to return the mine. Due to the selection of the medium mine, the quality of the concentrate can be guaranteed. 
3. The separate treatment of medium ore is complex for the medium ore, such as dip-dye complex, the difference between floatability and ore-bearing properties, and also contains more slime. If the mine returns to the original flotation cycle, it will definitely deteriorate the whole float. Selection process. In this case, the medium ore should be treated separately. As shown in Figure 4.
Sometimes, the medium ore can be directly sold as a low-grade concentrate without reprocessing. In some cases, in order to ensure the acquisition of high-quality concentrates and prevent the return of the mines and affect the quality of the concentrates, it is also possible to use the method of discarding some of the mines to ensure the quality of the concentrates. Basically, it does not affect the recovery rate.
When the mine contains excess water or flotation agent, it will affect the previous operation after returning, and dehydration and drug removal should be carried out first.