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A gravity beneficiation machine that utilizes the continuous centrifugal force generated by the slurry in the spiral rotary motion to achieve the separation of light and heavy minerals. 2、 The mortar with the same working principle is slowly fed onto the surface of the spiral groove through the feeding chute installed at the end of the rotating groove head, and selected for operation. The tail of the rotating groove is equipped with a valve block type product cutting groove, which divides the sorting equipment into three categories according to grade along the radial direction. By adjusting the position of the valve block to change the acquisition width of each product, the equipment gathering hopper enables the selected multi head ore flow to converge and export separately. The cross-section of the spiral chute and the slope of the curve change greatly, which is applied to the selection of fine ore materials. Spiral chute bottom elliptical curve III. Advantages and characteristics: 1. Stable, easy to control, with a relatively large concentration range. 2. The production and processing capacity of mineral materials is strong, with high enrichment and high recovery rate. 3. It takes up little space, consumes little water, has a simple structure, and does not require power. 4. Installation is simple, easy to operate, with minimal investment and fast efficiency recovery. The elliptical curve at the bottom of the spiral chute is composed of six parts: a feeding homogenizer, a feeding trough, a spiral trough, an equipment selection trough, a product gathering hopper, and a trough bracket (including a cross or triangular frame). The spiral groove formed by connecting rotating discs is a key component. The spiral plate is made of fiberglass (fiberglass reinforced coal gangue) and connected together through screws. The sorting surface of the rotating groove has a pre designed durable wear-resistant layer. It has the advantages of lightweight, sturdy, durable, and durable consumer goods that are not easily damaged. A multi tube feeding homogenizer is installed above the rotating groove to sort minerals equally, making it easy to control. The concentrator does not need to be restricted from being placed on the cross (or tripod) of the support table. The evenly distributed slurry passes through the feeding chute installed at the head end of the spiral groove and slowly feeds onto the rotating groove surface for sorting. The tail of the spiral groove is equipped with a valve type new product acquisition groove, which allows the sorting equipment to be divided into three types (or four types) of new products along the radial direction according to grade. To adjust the orientation of the valve block and change the width of each new product, it is necessary to cut it off. The new equipment gathering bucket is a concentric annular tube that differentially collects and leads selected multi-directional mineral flows. The transverse surface of the fiberglass chute and the slope of the curve change greatly to adapt to the selection of fine-grained materials. Elliptic curve at the bottom of spiral chute V. The utilization range of glass fiber reinforced plastic chute is suitable for separating fine grained iron ore, ilmenite ore, chromite ore, pyrite ore, tin, tantalum niobium ore, placer gold ore, coal mine, monazite ore, Rutile ore, zircon and rare earth ore, and has enough Density contrast to obtain other metal and non-metallic ores. Spiral Chute Bottom Elliptic Curve