The new and old systems re-elected the rough selection section with a total of 32 6-S shakers, including 24 old systems (500t/d). According to the data of the old system in August 1986, the main selection conditions for rough selection are: mineral concentration 40.91%, -40 mesh accounting for 79.1%, -200 mesh accounting for 41.49, unit processing capacity 0.92 ton / Table (stroke, stroke, flushing water data is lacking).
The selection result of the rough selection shaker is ( gold concentrate + medium mine):
The recovery rate of tungsten operation was 56.25%, the recovery rate of antimony operation was 18.18%, and the recovery rate of gold operation was 33.90%.
Granular recovery results: tungsten: 80 mesh to 200 mesh, 80% for +40 mesh, and 37.24% for -200 mesh.
锑: 100.52% for 100 mesh to 200 mesh, and 10.7% for -200 mesh.
Gold: 63.67% for 140 mesh to 200 mesh, 38.80% for -200 mesh
2, rough selection of the shaker in the mine (mixed concentrate) and then shake
The mixed concentrates of all the rough-selected shakers were combined into a vibrating screen, and the sand was sieved into a two-stage ball mill classifier, and the sieved sand was recovered by a 6-S shaker. The shaker has a processing capacity of 0.75 tons/set. The results of the selection were as follows: coarse selection of shaker mixed concentrate containing Au 23.13g/t, and then obtained gold concentrate yield of 0.01%, containing Au 1154.67g / t, enrichment ratio of 49.92 times, the occupation of ore metal 4.31%, if the recovery rate of the gold concentrate concentrate mixing operation is 60%, then the recovery rate of mercury in the middle mine is (4.31% × 60% = 2.59%)
3, trough floating bed to choose tungsten
The tailings after the ore is floating float gold and antimony sulfide ore, generally only two 6-S shakers are activated. When the processing capacity of a single shaker is 0.29t/set, the concentration is about 8%. The selected particle size is about -40 mesh and about 80%. The result of the selection is:
1. Selected into the ore grade WO3 4.61%, concentrate WO3 67.23%, tungsten recovery rate is 26.49%, the recovery rate of raw ore is 16.95% (tungsten in gold concentrate is not included).
2. Granular recovery: 50% between 120 and 200 mesh, 42.79% for -200 mesh metal, and 49.03% for 200 mesh metal in tailings. -200 mesh or less (not water analysis).
4, rough selection shaker gold concentrate selected recovery monomer gold
In order to increase the total recovery of gold for early harvest, the gold concentrate produced by the rough selection shaker is concentrated into the gold extraction room. The method for recovering the monomer gold is as follows: firstly, the oscillating belt chute is used for rough selection, and the tail sand is swept by a shaker, and the obtained gold sand is artificially washed and enriched, and then the monovalent natural gold is recovered by a mixed recording method.
The results of the measurement: the processing of gold concentrate is 0.335 tons, the gold return is 734.818/t, the -80 mesh accounts for 91.93%, and the -200 mesh point is 37.26%. The recovery rate of the whole process was 59.71%. From the analysis of the sieve analysis data: the vibrating belt chute mainly recovers gold in the 160-200 mesh class, while the gold recovery in the 80-140 mesh is poor, and the shaker makes up for the deficiency, mainly recovering 80 mesh-140. The gold in the eye. It can be seen that the selection process of the vibrating belt + shaker combined with the recovery of the monomer gold is suitable. After the vibration of the oscillating belt chute equipment itself, the maintenance power can not keep up, and other reasons are not used.
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