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The useful component of ore was gold with other minerals, such as pyrite, galena, sphalerite, chalcopyrite, natural gold, little arsenopyrite, copper blue and gangue minerals of quartz, calcite, etc. The gold minerals in ore existed in three types: embedded gold, intergranular gold and fissure gold, accounting for 43.17%, 41.55% and 15.28% respectively, and their distribution was very uneven.
Ore Preparation Stage: The maximum feeding size of raw ore was ≤350mm. In crushing operation adopted two stage and one closed circuit method, with final crushing size of ≤15mm. For grinding operation adopted one stage closed circuit for grinding and classification, which final grinding fineness was -200 mesh accounting for 68%.
Separation Stage: The separation operation adopted the combined separation process of gravity separation and flotation. After grinding and before classification, jig machine was used for first separation, obtaining coarse concentrate, which entered shaking table for two stage beneficiation operation in order to obtain gravity processing concentrate. The ore pulp with qualified fineness was classified into flotation operation and the gold concentrate was floated through one coarse separation, two scavenging and two cleaning operations.
Dewatering Stage: Concentrate dewatering adopted two stage of concentration and filter press, which final product moisture was≤15%. Tailings dewatering adopted one stage filter press operation, with ≤20%final product moisture.
An air-inflation mechanical agitation flotation cell without slurry suction (This type of cell is designed referring to Finland Autoquenpu OK flotation cell).
A jigging machine realizes the separation of light and heavy mineral by the different sedimentation speed in vertical alternating water flow
Concentrating table (shaking table) is a gravity separation equipment of separation different weight mineral by asymmetric reciprocating motion
A dewatering equipment that uses the slurry pump pressure to make liquid filter cloth come out, including chamber press filter and plate press filter
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