Many placer gold mines contain cemented sludge, some of which have a particle size greater than 100 mm. If this sludge is not disintegrated, it will be removed with the waste rock during the screening process, causing gold loss. In addition, vibrating screens and trommel screens are often used as screening equipment, both of which have a long service life and large processing capacity.
Practice has proved that the re-selection method is an effective and economical treatment method for placer gold mines. Due to the different particle size composition of gold in placer gold mines, different placer gold ore beneficiation equipment has different effective particle size limits for the processed materials, so a reasonable placer gold separation process should adopt the combined operation of several different gravity separation equipment.
The conical slide valve of the jig machine reduces the failure rate by 80% and consumes less energy. It can realize the sorting needs of different materials and increase the processing capacity by more than 35%. In addition, the jig machine adopts advanced frequency conversion speed regulation technology, which is convenient for operation and management; it occupies a small area and has a large processing capacity per unit area. We have improved the traditional 6s shaking table, using a cam lever head, changing the position of the sliding head on the rocker arm to adjust the stroke, and the stroke rate is adjusted by the smooth motor pulley. Its advantages are that it is easy to adjust the stroke, the bed surface of the shaker runs smoothly, the structure is compact, and the energy consumption is lower.
The technological process is simple, the cost of sand gold ore dressing equipment is low, and the operation is easy. In addition, the process has the characteristics of environmental protection and can directly discharge tailings, which greatly reduces the civil construction investment of the entire concentrator project.