Beneficiation equipment for grading two-stage ore grinding and grading settled sand

Abstract

The utility model relates to the technical field of beneficiation processes, in particular to beneficiation equipment for grading two-stage ore grinding, grading and sand setting, which comprises a pump station, a grading pool, a first cyclone, a first pump pool, an ore separation box and secondary grading equipment. The pump station is communicated with an ore pulp conveying pipeline; the grading tank is communicated with a discharge port of the pump station, and a feed port of the first cyclone is communicated with the grading tank; a feeding hole of the first pump tank is communicated with an overflow hole of the first cyclone; a feeding hole of the ore separation box is communicated with a discharging hole of the first pump pool; and the secondary grading equipment is communicated with a discharge port of the first cyclone. The utility model further provides an ore dressing device for grading the two-stage ore grinding and grading settled sand, and the separation characteristic that the coarse particle grading effect of the spiral chute is better than the fine particle grading effect is fully utilized.

Description

Technical Field

[0001] The utility model relates to the technical field of ore dressing technology, in particular to ore dressing equipment for separating two-stage grinding and graded sand settling. Background Art

[0002] Grinding classification refers to the classification of raw ore according to physical properties such as particle size and density after the raw ore is processed through crushing and grinding processes, so as to obtain ore products of different particle sizes and grades. The raw ore is initially crushed to break down large pieces of raw ore into smaller particles. This can be done by equipment such as jaw crushers and cone crushers. The crushed ore particles need to be further refined. Ball mills, rod mills and other equipment are usually used to grind the ore. The ore particles after grinding are classified according to their size and density, and screening equipment or cyclones are usually used for classification operations. The classified ore enters the mineral processing process, and through methods such as gravity separation and flotation, the grade of useful minerals in the ore is improved to obtain mineral products that meet the requirements. The entire grinding and classification process is of great significance to improving the utilization rate of ore and reducing production costs, so it occupies a key position in mining production.

[0003] However, in the existing grinding and classification process, the overflow particle size of the second-stage ball mill is often coarse, which makes the operation of the flotation equipment more difficult, increases the cost of flotation reagents, and makes the flotation equipment difficult to control, resulting in large fluctuations in indicators, which increases the workload of subsequent separation. Utility Model Content

[0004] The main purpose of the utility model is to provide a ore dressing device for separating two-stage grinding and grading sand, which can effectively solve the problem of coarse overflow particle size of the two-stage ball mill mentioned in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A ore dressing equipment for separating two-stage grinding and classification sand settling, comprising:

[0007] A pump station, wherein the pump station is connected to a slurry conveying pipeline;

[0008] A classification tank, the classification tank is connected to the discharge port of the pump station;

[0009] a first cyclone, wherein a feed port of the first cyclone is connected to the classification tank;

[0010] A first pump pool, wherein a feed port of the first pump pool is in communication with an overflow port of the first cyclone;

[0011] An ore distribution box, wherein the feed port of the ore distribution box is connected to the discharge port of the first pump pool;

[0012] A secondary classification device is connected to the discharge port of the first cyclone.

[0013] The secondary classification equipment comprises:

[0014] a ball mill, wherein the feed inlet of the ball mill is connected to the discharge outlet of the first cyclone;

[0015] a second pump pool, wherein the feed inlet of the second pump pool is connected to the discharge outlet of the ball mill;

[0016] A second cyclone, wherein a feed port of the second cyclone is connected to a discharge port of a second pump pool;

[0017] a spiral chute, wherein a feed port of the spiral chute is connected to a discharge port of the second cyclone;

[0018] A concentrate concentrating tank is connected to the concentrate outlet of the spiral chute.

[0019] Also includes:

[0020] A motor, the motor being longitudinally mounted at the connection between the slurry conveying pipeline and the pump station (1);

[0021] A lower rotating blade, wherein the lower rotating blade is installed at the bottom of the output end of the motor;

[0022] The upper rotating blade is installed above the lower rotating blade.

[0023] The tailings outlet of the spiral chute is connected to the feed inlet of the pump station.

[0024] The overflow port of the second cyclone is communicated with the feed port of the first pump pool.

[0025] Compared with the prior art, the beneficial effects of the utility model are:

[0026] Provided is a ore dressing equipment for separating and classifying sand from two-stage grinding, that is, fully based on the separation characteristic of the spiral chute that the separation effect of coarse particles is better than that of fine particles, the two-stage grinding and classifying sand are directly fed into the spiral chute for separation, so as to separate and extract qualified iron concentrate in advance, reduce the subsequent flotation operation volume, optimize the flotation operation conditions, and greatly reduce the ore dressing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the specific embodiments of the present invention and do not constitute a limitation to the present invention.

[0028] Figure 1It is a schematic diagram of the overall appearance of the mineral processing equipment of the utility model.

[0029] Figure 2 The utility model is a flow chart of the use of mineral processing equipment.

[0030] Figure 3 It is a schematic diagram of the anti-blocking mechanism of the utility model.

[0031] Numbers in the figure: 1, pump station; 2, classification tank; 3, first cyclone; 4, first pump tank; 5, ore separation box; 6, secondary classification equipment; 601, ball mill; 602, second pump tank; 603, second cyclone; 604, spiral flow trough; 605, mirror ore concentration tank. 7, motor; 8, lower rotating blade; 9, upper rotating blade. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be fixed connection, detachable connection, or integrated connection; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] like Figure 1-2 As shown, a first embodiment of the utility model is a ore dressing equipment for selecting two-stage grinding, classification and sand settling, comprising: a pump station 1, a classification tank 2, a first cyclone 3, a first pump tank 4, a separation box 5, and a secondary classification device 6; the pump station 1 is provided with two feed ports, one connected to the slurry conveying pipeline, and the other connected to the spiral chute 604. The classification tank is connected to the discharge port of the pump station 1, the feed port of the first cyclone 3 is connected to the classification tank, the feed port of the first pump tank 4 is connected to the overflow port of the first cyclone 3, the feed port of the separation box 5 is connected to the discharge port of the first pump tank 4, and the secondary classification device 6 is connected to the discharge port of the first cyclone 3. The connection between the pump station 1 and the slurry conveying pipeline can directly transport the ore discharged from the second-stage ball mill of the specular iron ore to the newly added cyclone for classification through the pump.

[0035] In this embodiment, the secondary classification equipment 6 includes: the feed port of the ball mill 601 is connected to the discharge port of the first cyclone 3; the feed port of the second pump pool 602 is connected to the discharge port of the ball mill 601; the feed port of the second cyclone 603 is connected to the discharge port of the second pump pool 602; the feed port of the spiral chute 604 is connected to the discharge port of the second cyclone 603, and the concentrate concentration tank 605 is connected to the concentrate outlet of the spiral chute 604. The overflow of the cyclone is subjected to two-stage selection through the original process, and the cyclone sedimentation flows by gravity to the separation box 5 and enters the second-stage spiral chute 604 for selection. The concentrate of the second-stage spiral chute 604 is used as iron ore concentrate, and the middlings and tailings flow by gravity to the secondary pump station 1 through the pipeline. The newly added cyclone model is FX400, with a diameter of 400mm. The cyclone sedimentation is fed into the second-stage spiral chute 604 distributor and flows into the 1000mm spiral chute 604 by gravity. The second-stage spiral chute 604 can extract the concentrate with a grade of about 65% in advance. Through the implementation of this patent project, a new mineral processing technology that uses the spiral chute 604 to select the second-stage grinding and classification sedimentation can extract qualified iron concentrate in advance to the maximum extent, reduce the subsequent selection workload, stabilize production indicators, and reduce mineral processing costs.

[0036] Preferably, Figure 3 As shown, in order to prevent the slurry from being blocked during feeding, a motor 7 is longitudinally installed at the connection between the slurry conveying pipeline and the pump station 1, a lower rotating blade 8 is installed at the bottom of the output end of the motor 7, and an upper rotating blade 9 is installed above the lower rotating blade 8. The motor 7 is a motor. When the motor 7 is started, the upper rotating blade 9 and the lower rotating blade 8 are driven to rotate. The longitudinal rotation of the blades will not only generate a small amount of suction to assist in conveying, but also, because the lower rotating blade is larger and the upper rotating blade 9 is smaller, there is a drop and distance between the two sets of blades, and a small amount of cyclone is generated during rotation, which will break up the large particles of slurry and prevent blockage.

[0037] It should be noted that the second utility model is a ore dressing equipment for selecting two-stage grinding, classification and sand settling. The specific use process is: the iron ore slurry is transported to the pump station 1 along the pipeline, and then transported to the classification tank by the pump station 1. The slurry is transported from the classification tank to the first cyclone 3 for classification. After classification, slurry and sand are obtained. The slurry overflows from the overflow port of the first cyclone 3. The overflowed slurry is transported to the separation box 5 through the first pump tank 4. The sand is discharged from the discharge port of the first cyclone 3 and transported to the ball mill 601 for crushing. The slurry obtained after crushing is transported to the second cyclone by the second pump tank 602. The cyclone 603 performs secondary classification, and the secondary classification obtains mortar and sediment. The mortar particles are larger than the sediment, so the mortar overflows from the overflow port of the second cyclone 603, and the overflowed mortar is transported to the separation box 5 through the first pump pool 4, and the sediment is discharged from the discharge port of the second cyclone 603. The discharged sediment will be transported to the spiral chute 604 for sorting. After the sorting is completed, the concentrate and middlings and tailings will be obtained. The concentrate will be discharged through the concentrate outlet of the spiral chute 604 and transported to the concentrate thickening tank 605. The middlings and tailings obtained after sorting will be transported back to the pump station 1, and the grading process is completed.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mineral processing equipment for separating two-stage grinding and classification sand settling, characterized in that: include: A pump station (1), wherein the pump station (1) is provided with two feed inlets, one connected to a slurry conveying pipeline, and the other connected to a spiral chute (604); A classification tank (2), wherein the classification tank (2) is connected to the discharge port of the pump station (1); A first cyclone (3), wherein a feed port of the first cyclone (3) is connected to the classification tank (2); A first pump pool (4), wherein a feed inlet of the first pump pool (4) is connected to an overflow outlet of the first cyclone (3); An ore distribution box (5), wherein the feed port of the ore distribution box (5) is connected to the discharge port of the first pump pool (4); A secondary classification device (6), the secondary classification device (6) being connected to a discharge port of the first cyclone (3); A motor (7), wherein the motor (7) is longitudinally installed at the connection between the slurry conveying pipeline and the pump station (1); A lower rotating blade (8), wherein the lower rotating blade (8) is installed at the bottom of the output end of the motor (7); An upper rotating blade (9), wherein the upper rotating blade (9) is installed above the lower rotating blade (8).

2. The ore dressing equipment for separating two-stage grinding and classification sand settling according to claim 1 is characterized in that: The secondary classification device (6) comprises: A ball mill (601), wherein a feed port of the ball mill (601) is connected to a discharge port of the first cyclone (3); A second pump pool (602), wherein the feed port of the second pump pool (602) is connected to the discharge port of the ball mill (601); A second cyclone (603), wherein the feed inlet of the second cyclone (603) is connected to the discharge outlet of the second pump pool (602); A spiral chute (604), wherein a feed port of the spiral chute (604) is connected to a discharge port of the second cyclone (603); A concentrate concentrating tank (605), wherein the concentrate concentrating tank (605) is connected to the concentrate outlet of the spiral chute (604).

3. The ore dressing equipment for separating two-stage grinding and classification sand settling according to claim 2 is characterized in that: The tailings outlet of the spiral chute (604) is connected to the feed inlet of the pump station (1).

4. The ore dressing equipment for separating two-stage grinding and classification sand settling according to claim 2 is characterized in that: The overflow port of the second cyclone (603) is connected to the feed port of the first pump pool (4).

5. The ore dressing equipment for separating two-stage grinding and classification sand settling according to claim 2 is characterized in that: The slurry conveying pipeline is located above the feed inlet of the pump station (1).

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