Since the spiral chute rotates in a specific direction at a certain speed, during the sorting process, the heavy mineral of the bottom layer is subjected to the frictional force opposite to the direction of the slurry flow, and the inertial force of the tangential movement of the heavy mineral is increased, and the force in the normal direction is increased. Smaller, causing heavy minerals to move along a special strip or trough to the concentrate zone (inner edge).
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First, because the spiral chute rotates in a specific direction at a certain speed, during the sorting process, the heavy mineral of the bottom layer is subjected to the frictional force opposite to the direction of the slurry flow, and the inertial force of the tangential movement of the heavy mineral is increased, and the normal The force in the direction is small, causing conditions for heavy minerals to move along the special strip or trough to the concentrate belt (inner edge). In the sorting process, the light mineral is located on the upper surface of the spiral chute surface, and the friction is small. Due to the rotation of the spiral chute, the moving speed is large. At the same time, under the strong action of high-speed water flow, the light minerals are quickly pushed to the outside and enter the tailings belt.
Second, there are special strips or grooves on the groove surface, and at an angle to the diameter of the spiral, the spiral chute rotates at a certain speed, thus forcing heavy minerals, especially the heavy minerals of the outer circle to the spiral distillation tank. Inner edge movement. The recovery rate has been greatly improved. Light minerals continue to move into the tailings zone as they move toward the outer edge of the spiral.
Third, due to the rotation of the spiral chute, in addition to increasing the inertial force of heavy minerals, increasing the centrifugal force of the light minerals, the heavy minerals of the bottom layer are moved to the concentrate belt along the special strips or grooves along the groove surface. This reduces the loss of useful minerals and significantly increases concentrate grade and recovery. In the composite force field, the minerals with different specific gravity or different grain size are significantly different, strengthen the sorting process, improve the sorting efficiency and reduce the lower limit of mineral particle recovery. The recovery rate of -0.032mm is more than 20%, and the recovery fraction can be reduced. By the time of 0.019mm, it broke the conclusion that the spiral chute can only recover the grain size of 0.037mm or more, and combines the coarse grain and the fine mud. The efficiency in the rough sweeping process is particularly outstanding.
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Xi'an Jmlai Bio-Tech Co., Ltd. , https://www.jmlaisarms.com