Novel gravity and magnetic separation spiral chute

Abstract

The utility model provides a novel gravity and magnetic separation spiral chute, and belongs to the technical field of mineral processing equipment. The device comprises a supporting seat, a magnet rod, a spiral groove, an ore receiving groove and an ore feeding groove, the magnet rod is vertically arranged on the supporting seat, the spiral groove is formed in the supporting seat, the magnet rod is arranged at the center of the spiral groove, the ore receiving groove is formed in the lower end of the spiral groove, and the ore feeding groove is formed in the upper end of the spiral groove. And the ore flows out of the ore receiving groove under the action of the magnet rod. The magnet rod is arranged in the center of the spiral groove, so that the inward stress of the magnetic minerals in the spiral groove can be increased, the original magnetic minerals running into the outer edge return to the positive track again and enter the inner edge, and therefore the situation that fine-fraction concentrate enters tailings is reduced, and the concentrate yield is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of ore dressing equipment, in particular to a novel gravity magnetic separation spiral chute. Background Art

[0002] In the iron ore beneficiation industry, many of the process flows adopted are magnetic separation - chute gravity separation - reverse flotation. The chute gravity separation equipment is a highly efficient spiral chute gravity separation equipment. The spiral chute has a wider and flatter trough surface, and the area where the slurry flows in a laminar flow is larger, which is suitable for processing medium and fine-grained ores. Although the grade of the ore concentrate separated by it meets the requirements, in actual production, fine-grained concentrate often enters the tailings, thereby increasing the grade of the tailings and reducing the concentrate yield. The large flow of tailings puts great pressure on reverse flotation. For this reason, the utility model provides a new type of gravity magnetic separation spiral chute. Summary of the invention

[0003] In order to make up for the above shortcomings, the utility model provides a new type of gravity magnetic separation spiral chute, which aims to improve the existing spiral chute with a wider and flatter trough surface, a larger area of ​​laminar flow of slurry, and is suitable for processing medium and fine-grained ores. Although the grade of the ore concentrate separated by it meets the requirements, the yield is low and the tailings grade is high.

[0004] The utility model is achieved in this way:

[0005] The utility model provides a novel gravity magnetic separation spiral chute, comprising:

[0006] A support seat;

[0007] A magnet bar, the magnet bar is vertically arranged on the support seat;

[0008] A spiral groove, wherein the spiral groove is arranged on the support seat, and the magnet bar is arranged at the center of the spiral groove;

[0009] an ore receiving chute, the ore receiving chute being arranged at the lower end of the spiral chute;

[0010] A feeding chute, which is arranged at the upper end of the spiral chute;

[0011] Among them, after the materials in the feeding trough enter the spiral trough, they flow out from the receiving trough after being acted upon by the magnet bar.

[0012] Preferably, it also includes:

[0013] A uniform ore distributor is provided on the feed chute.

[0014] Preferably, an operating gap is left between the magnet bar and the spiral groove.

[0015] Preferably, a tripod is arranged below the support seat.

[0016] Preferably, it also includes:

[0017] A cutting groove is arranged near the lower end of the spiral groove.

[0018] Preferably, a slot support is provided between the ore receiving slot and the support seat.

[0019] Preferably, the magnet bar is detachably arranged on the support seat.

[0020] The beneficial effect of the utility model is that in a novel gravity magnetic separation spiral chute provided by the utility model, a magnet bar is arranged at the center position of the spiral chute, which can increase the inward force of the magnetic minerals in the spiral chute, so that the magnetic minerals that originally ran into the outer edge return to the right track and enter the inner edge, thereby reducing the fine-grained concentrate from entering the tailings and improving the concentrate yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the structure of a novel gravity magnetic separation spiral chute provided for an implementation mode of the utility model.

[0023] In the figure: uniform ore divider 1, ore feeding trough 2, spiral trough 3, intercepting trough 4, magnetic rod 5, ore receiving trough 6, and support base 7. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific drawings.

[0025] It should be noted that, in the present invention, when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only and do not represent the only implementation method.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0027] Example

[0028] like Figure 1 As shown, the utility model provides a novel heavy magnetic separation spiral chute, comprising: a support seat 7, a magnet bar 5, a spiral groove 3, an ore receiving chute 6, and an ore feeding chute 2, wherein the magnet bar 5 is vertically arranged on the support seat 7, the spiral groove 3 is arranged on the support seat 7, the magnet bar 5 is arranged at the center of the spiral groove 3, the ore receiving chute 6 is arranged at the lower end of the spiral groove 3, and the ore feeding chute 2 is arranged at the upper end of the spiral groove 3, wherein after the material in the ore feeding chute 2 enters the spiral groove 3, it flows out from the ore receiving chute 6 after being acted upon by the magnet bar 5.

[0029] Ordinary gravity separation chutes use gravity flow. According to the differences in specific gravity, particle size and shape between useful minerals and gangue minerals, a dynamic centrifugal flow film of slurry is generated on the inclined surface of the spiral. In the comprehensive force field of gravity and centrifugal force, the gravity, hydrodynamic pressure and friction of different particles are used to achieve the separation of useful minerals and gangue. In addition to the downward spiral motion, the water in the spiral groove 3 also circulates horizontally. The upper water flow has a fast flow rate, which generates a large inertial centrifugal force and is thrown to the outer edge of the spiral groove 3. The lower water flow adjacent to the bottom of the spiral groove 3 has a slow rotation speed and a small centrifugal force. Under the action of gravity, it flows from the outer edge to the inner edge, generating secondary reflux. The heavy mineral particles in the slurry settle quickly, gradually move to the inner edge along the converging spiral line, and are finally produced in the form of concentrate. Light minerals settle slowly and are on the surface of the ore flow with a fast flow rate and a large centrifugal force. Under the action of the lateral circulation, they gradually move toward the outer edge along the expanding spiral line and are finally produced in the form of tailings, causing fine-grained concentrate to enter the tailings, thereby increasing the grade of the tailings and reducing the concentrate yield. The addition of the magnet bar 5 can increase the inward force on the magnetic minerals in the spiral groove 3, so that the magnetic minerals that originally ran into the outer edge return to the right track and enter the inner edge, thereby improving the concentrate yield and reducing the tailings grade.

[0030] In this embodiment, the magnet rod 5 is preferably detachably arranged on the support seat 7, and magnet rods 5 with different magnetic properties can be replaced for different types of ore pulp. At the same time, an operating gap is left between the magnet rod 5 and the spiral groove 3 to facilitate subsequent replacement. The operating gap left between the magnet rod 5 and the spiral groove 3 can prevent the magnetic material in the ore pulp from being adsorbed on the magnet rod 5, thereby reducing the concentrate yield.

[0031] In this embodiment, it also includes: a uniform ore separator 1, which is arranged on the feed trough 2 and can evenly distribute the slurry entering the uniform ore separator 1 to the feed trough 2, avoiding unevenness caused during the feeding process, thereby affecting the slurry entering the spiral trough 3, resulting in a reduction in the concentrate yield.

[0032] In this embodiment, a tripod is provided below the support seat 7 to increase the height of the ore receiving trough 6 from the bottom surface, and a trough support is provided between the ore receiving trough 6 and the support seat 7. The provision of the support can enhance the support function of the support seat 7 for docking the ore trough 6. At the same time, an intercepting trough 4 is provided near the lower end of the spiral trough 3 to facilitate the operator to intercept and test the slurry in the spiral trough 3 at any time.

[0033] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A gravity magnetic separation spiral chute, characterized in that: include: A support seat; A magnet bar, the magnet bar is vertically arranged on the support seat; A spiral groove, wherein the spiral groove is arranged on the support seat, and the magnet bar is arranged at the center of the spiral groove; an ore receiving chute, the ore receiving chute being arranged at the lower end of the spiral chute; A feeding chute, which is arranged at the upper end of the spiral chute; The material in the feeding trough enters the spiral trough and flows out from the receiving trough after being acted upon by the magnet bar. Also includes: a uniform ore distributor, the uniform ore distributor being arranged on the ore feed chute; An operating gap is left between the magnet bar and the spiral groove; A tripod is arranged below the support seat; Also includes: An intercepting groove, the intercepting groove is arranged near the lower end of the spiral groove; A slot support is arranged between the ore receiving slot and the support seat; The magnet bar is detachably arranged on the support seat.

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