Spiral Chutes - JXSC

The working principle of the spiral chute is to use the inclined plane water flow method to sort according to the specific gravity difference of minerals. The slurry mixture is fed into the chute with a small inclination angle (generally 3 to 4 degrees, generally no more than 6 degrees), and the ore particles are layered according to the density under the combined action of the impact of water flow, gravity, centrifugal force, and friction. Since the speed distribution of the water flow in the tank is large in the upper layer and smaller in the lower layer, the denser ore particles are concentrated in the lower layer, and they move slowly along the bottom of the tank due to the momentum of the water flow and the greater friction at the bottom of the tank; The particles are concentrated in the upper layer, carried by the water flow, and flow out of the tank at a relatively fast speed. Then, two kinds of products with different densities, concentrate and tailings can be obtained by intercepting the flow separately by layer.

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1. Gravity separation is one of the commonly used methods for gold ore beneficiation. It uses different specific gravity of materials and different sedimentation speed in the medium to carry out layered separation. Generally, in placer gold ore, gold is mostly in the form of monomer natural gold. When it exists, the density difference between it and the gangue is relatively large, and it is effective and economical to use for gravity separation of gold.

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2. The spiral chute is suitable for processing fine-grained materials with low mud content. The material particle size ranges from 0.6 to 0.03 mm. It has a simple structure, large processing capacity, and low overall cost.

3. In the gold ore dressing, the selection of gravity separation needs to be determined according to the nature of the gold ore. It is suggested to select the beneficiation test in the process selection, analyze the nature of the gold ore, and finally determine whether the gravity separation process is suitable for selection according to the test, or determine which gravity separation process is more suitable through the test.