Submersible spiral classifier

The submersible classifier is a grading equipment that performs mechanical classification by virtue of the principle that solid particles have different sizes and specific gravity, and therefore have different settling speeds in the liquid. Fine ore particles float in the water and overflow, while coarse ore particles sink to the bottom of the tank and are pushed upward by a spiral and discharged. This classification equipment performs mechanical classification. Through the low-speed rotation of the spiral, the slurry is stirred so that the fine particles are suspended above and flow to the overflow weir. The coarse particles sink to the bottom of the tank and are conveyed by the spiral to the discharge port and discharged as return sand. Generally, Huston sunken spiral classifier has 4-5 spiral blades at the overflow weir end, all of which are sunk in the slurry. This type of classifier has a large settling area, a deep classification tank, and the agitation of the spiral has little impact on the surface of the slurry. Therefore, the grading surface is stable and the overflow is large and fine.

Tanzania is located in southern Africa and has a savanna climate with high air humidity. Many machines are often eliminated due to rust. In a gold mine project in Tanzania, the demand for ore separation is not particularly large, but the requirements for ore particle size are relatively strict. Huston selected a sunken spiral classifier for the customer based on the customer’s geographical location and needs. The classification overflow particle size is ≤0.015mm. The classification effect meets the customer’s needs, and the ore dressing recovery rate is increased by 11%.