A laboratory magnetic separation device

Abstract

The present invention discloses a laboratory magnetic separation device, at least one magnetic separation tube, wherein the magnetic separation tube has a head end, a middle end, a tail end and includes a first tube part and a second tube part, the first tube part extends from the head end to the middle end, the second tube part extends from the middle end to the tail end, wherein the head end and the tail end are both lower than the middle end, at least one electromagnet, and at least one flushing device, the sample is allowed to be pushed from the head end of the magnetic separation tube through the middle end toward the tail end and is flushed during the movement from the head end to the middle end, and the present invention adopts an upward flushing water flow to increase the time of adsorbing magnetic iron.

Description

Technical Field

[0001] The present invention relates to the field of magnetic separation technology, and more specifically, to a magnetic separation device for laboratory use. Background Art

[0002] Iron is widely distributed in our daily life, accounting for 4.75% of the earth's crust, ranking fourth after oxygen, silicon and aluminum. However, there are few iron ores with industrial value. The economic value of an average iron ore deposit and the calculation of its reserves do not depend on the absolute content of iron, but on the state of iron in the ore and its content. Therefore, laboratory phase analysis of iron ore is an indispensable task. Currently, manual magnetic separation and WFC-2 phase analysis magnetic separator are used for operation.

[0003] The manual magnetic separation method uses a long permanent magnet wrapped in a jacket (copper sleeve, glass sleeve, plastic paper sleeve, etc.) to move back and forth in a beaker; put the long permanent magnet into the second beaker, take it out, rinse the magnetic material on the jacket into the second beaker, and repeat the above steps; the operation is all manual, with high repeatability and low efficiency, and it is easy to make mistakes in the number of magnetic separations during frequent operations, resulting in large errors in accuracy and difficulty in comparison; the WFC-2 phase analysis magnetic separator has the problem of poor accuracy due to the short magnetic separation path, and the magnetic separation flushing direction is downward, the flushing speed is fast, and the magnetic iron is easily washed out, resulting in a low recovery rate. In addition, it cannot operate on some ores with a high degree of oxidation, and it still needs to use manual magnetic separation, and there is also the problem of high cost. Summary of the invention

[0004] The object of the present invention is to provide a laboratory magnetic separation device, which can lengthen the magnetic separation path, flush from bottom to top, and improve the magnetic separation recovery rate.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A laboratory magnetic separation device is used to screen magnetic iron in a sample, comprising: at least one magnetic separation tube, wherein the magnetic separation tube has a head end, a middle end, a tail end and includes a first tube part and a second tube part, the first tube part extends from the head end to the middle end, the second tube part extends from the middle end to the tail end, wherein the head end and the tail end are both lower than the middle end, at least one electromagnet, wherein the electromagnet is arranged on the outer surface of the magnetic separation tube, and is used to absorb or release the magnetic iron in the sample, and at least one flushing device, the sample is allowed to be pushed from the head end of the magnetic separation tube through the middle end toward the tail end and is flushed during the movement from the head end to the middle end.

[0007] Furthermore, the first tube portion is spiral-shaped.

[0008] Furthermore, it also includes a control system, and the control system is used to control the electromagnet and the flushing device to work.

[0009] Further, the electromagnet may be movable up and down along the outer surface of the first tube portion.

[0010] The electromagnet is disposed on the outer surface of the middle end.

[0011] Furthermore, the magnetic separation tube is connected to a recovery device.

[0012] Furthermore, the inner diameter of the pipe at the middle end is larger than the inner diameter of the magnetic separation pipe at other positions.

[0013] Furthermore, there are a plurality of electromagnets, and the control system controls the electromagnets to be powered on and off in sequence according to the flushing direction.

[0014] Furthermore, the magnetic separation tube is a plastic magnetic separation tube.

[0015] The laboratory magnetic separation device of the present invention has the following beneficial effects: the magnetic separation path is lengthened, so that the movement distance of the sample in the magnetic separation tube is lengthened, and the number of times the magnetic iron and non-magnetic samples in the sample are separated can be increased by utilizing the number of middle ends of the magnetic separation tube. The spiral tube section is provided so that the sample is stirred by the water flow, which is beneficial to the separation of the magnetic iron and non-magnetic samples in the sample, and can perform magnetic separation on ores with a high degree of oxidation as in the manual magnetic separation method. The problems of cumbersome manual operation and mistakes are avoided during the magnetic separation process. The present invention adopts an upward flushing water flow, which increases the time for the electromagnet iron to adsorb the magnetic iron during the magnetic separation process compared with downward flushing, thereby improving the recovery rate of the magnetic separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of a laboratory magnetic separation device according to a variant embodiment of a preferred embodiment of the present invention.

[0017] Figure 2 It is a schematic diagram of a laboratory magnetic separation device according to a modified embodiment of another preferred embodiment of the present invention.

[0018] Figure 3 It is a schematic diagram of a laboratory magnetic separation device according to a modified embodiment of another preferred embodiment of the present invention.

[0019] In the figure: 1, magnetic separation tube; 11, head end; 12, middle end; 13, tail end; 14, first tube part; 15, second tube part; 16, connecting end; 2, electromagnet; 3, flushing device; 4, control device; 5, recovery device. DETAILED DESCRIPTION

[0020] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0021] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "upper", "lower", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0022] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0023] like Figure 1 A laboratory magnetic separation device according to a preferred embodiment of the present invention is shown, comprising: a magnetic separation tube 1, an electromagnet 2 and a flushing device 3, wherein the magnetic separation tube 1 has a head end 11, a middle end 12, a tail end 13 and includes a first tube portion 14 and a second tube portion 15, the first tube portion 14 extends from the head end 11 to the middle end 12, and the second tube portion 15 extends from the middle end 12 to the tail end 13, wherein the head end 11 and the tail end 13 are both lower than the middle end 12. The electromagnet 2 is arranged on the outer surface of the magnetic separation tube 1, and is used to absorb or release the magnetic iron in the sample. The sample is allowed to be pushed from the head end 11 of the magnetic separation tube 1 through the middle end 12 toward the tail end 13 and is flushed during the movement from the head end 11 to the middle end 12.

[0024] It also includes a control system, which is used to control the electromagnet 2 and the flushing device 3 to work.

[0025] Optionally, the control system controls the on and off time of the electromagnet 2 to perform magnetic separation step by step. The magnetic separation tube 1 has a plurality of head ends 11, a plurality of middle ends 12, a plurality of tail ends 13, and includes a plurality of first tube parts 14 and a plurality of second tube parts 15. The magnetic separation tube 1 is provided with n middle ends 12, and an electromagnet 2 is arranged on the outer surface of each middle end 12, and is numbered 1, 2, 3, ... n according to the order of flushing water flow, and the electromagnet 2 is numbered 1, 2, 3, ... n in the corresponding order, and the head end 11 and the tail end 13 are numbered 1, 2, 3, ... n in the corresponding order. The tail end 13 numbered n-1 is connected to the head end 11 numbered n through the connecting end 16, and the electromagnet 2 is closed in sequence according to a certain time interval.

[0026] The iron ore sample is ground and passed through a 0.074 mm sieve, 0.1 g of the iron ore sample is weighed, and is flushed into the magnetic separation tube 1 using the flushing device 3 .

[0027] The iron ore sample is washed from the head end 11 of the magnetic separation tube 1 to the middle end 12 through the first tube part 14. When the sample flows with the water flow, the water flow flows upward in the pipeline to the first middle end 12. Since the electromagnet 2 is attached to the outer surface of the middle end 12 and the electromagnet 2 is energized and has magnetism, the magnetic iron in the sample is adsorbed on the inner surface of the first middle end 12 of the magnetic separation tube 1 by the magnetic force of the electromagnet 2, while the non-magnetic sample is deposited against the upward water flow due to gravity. When the electromagnetic force of the electromagnet 2 is cut off and disappears, the magnetic iron in the sample loses the magnetic adsorption effect and is washed to the tail end 13 with the water flow. In the process of flowing downward, the non-magnetic sample wrapped therein is further separated, and the non-magnetic sample is deposited at the connecting end 16, while the magnetic iron in the sample is adsorbed to the second middle end 12.

[0028] Alternatively, if Figure 2 As shown, the first tube portion 14 is configured to be spirally shaped. When water flows through the first tube portion 14 , due to the spiral structure of the pipe, the water flow is agitated under the action of water pressure and changes from rapid to slow. The sample is stirred and flushed in the water flow, and the water flows upward in the pipe to the first middle end 12 .

[0029] As the magnetic separation tube 1 bends up and down from the head end 11 to the middle end 12 and then to the tail end 13, the non-magnetic sample is gradually separated and deposited at the connection end 16 under the flushing of the rinsing water flow, so that the magnetic iron in the sample is separated from the non-magnetic sample. In the process of the sample flowing downward driven by the water flow, part of the magnetic iron does not have time to be attracted to the tube wall near the magnetic pole and is washed away. The present invention adopts an upward water flow and a widened pipeline, which has sufficient time to adsorb the magnetic iron without affecting the overall magnetic separation efficiency.

[0030] The magnetic separation tube 1 is connected to a recovery device 5, for example, a strong magnet is provided to absorb the magnetic iron in the sample. Preferably, the strong magnet is movable to facilitate the removal of the magnetic iron from the magnetic separation tube 1 for recovery and collection.

[0031] In other embodiments, the magnetic separator 1 may have a certain inclination angle with the horizontal plane, and is not limited to being perpendicular to the horizontal plane.

[0032] Preferably, the inner diameter of the pipe at the middle end 12 of the magnetic separation tube 1 is larger than the inner diameters of the pipes at the head end 11 and the tail end 13. The larger inner diameter of the pipe at the middle end 12 is beneficial to increase the area of ​​adsorption of magnetic substances and improve the adsorption recovery rate of magnetic substances. At the same time, the water flow is slowed down to increase the adsorption time. Preferably, the inner diameter of the pipe at the middle end 12 is 3 cm, and the inner diameter of the pipe at the head end 11 and the tail end 13 is 2 cm.

[0033] Preferably, the electromagnet 2 moves up and down along the outer surface of the first tube portion 14, and the iron ore sample is flushed into the magnetic separation tube 1. When the sample flows with the water flow, the magnetic iron in the sample in the first tube portion 14 is adsorbed on the inner surface of the magnetic separation tube 1 by the magnetic force of the electromagnet 2, and moves and flips with the reciprocating motion of the electromagnet 2. At the middle end 12, the magnetic force is controlled to disappear, and the sample enters the next section of the magnetic separation tube 1 under the uninterrupted elution water flow. The non-magnetic sample is deposited at the head end 11, thereby realizing the separation of the magnetic iron in the sample from the non-magnetic sample.

[0034] The control system can control the non-magnetic sample to be flushed out of the magnetic separation tube 1 by adjusting the water flow rate of the flushing device 3 after the magnetic separation is completed.

[0035] Preferably, the magnetic separator tube 1 is a plastic magnetic separator tube 1, preferably a soft plastic magnetic separator tube 1, which is supported by a bracket so that it can be bent up and down. The soft plastic magnetic separator tube 1 is not easy to corrode or break, and is more convenient to use.

[0036] Preferably, the connection end 16 is provided with a discharge valve to facilitate the discharge of non-magnetic samples therefrom, and the control system is used to control the opening and closing of the valve to achieve automated magnetic separation.

[0037] Preferably, the magnetic separation tube 1 is arranged to be rotatable, and the control system can adjust the inclination angle of the magnetic separation tube 1 with respect to the horizontal plane to be parallel to the horizontal plane, or the height of the inlet can be adjusted to be higher than the outlet, so as to facilitate flushing out the non-magnetic sample.

[0038] like Figure 3A laboratory magnetic separation device is shown, comprising: a magnetic separation tube 1, which is bent up and down in the vertical direction to form a plurality of head ends 11, middle ends 12 and tail ends 13. The magnetic separation tube 1 is turned 90 degrees in the horizontal projection direction while being bent. Through multiple turns, the main body of the magnetic separation tube 1 is gathered; an electromagnet 2, which is arranged on the outer surface of the middle end 12 of the magnetic separation tube 1; a flushing device 3, which is used to flush the inner surface of the magnetic separation tube 1; and a control device 4, which is used to control the electromagnet 2 and the flushing device 3 to work.

[0039] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A laboratory magnetic separation device for screening magnetic iron in a sample, characterized in that: include: At least one magnetic separator tube, wherein the magnetic separator tube has a head end, a middle end, and a tail end and includes a first tube portion and a second tube portion, wherein the first tube portion extends from the head end to the middle end, and the second tube portion extends from the middle end to the tail end, wherein the head end and the tail end are both lower than the middle end, at least one electromagnet, wherein the electromagnet is disposed on the outer surface of the magnetic separation tube and is used to absorb or release magnetic iron in the sample, and at least one flushing device, the sample is allowed to be pushed from the head end of the magnetic separation tube through the middle end toward the tail end and is flushed during the movement from the head end to the middle end; The electromagnet is arranged on the outer surface of the intermediate end or the electromagnet can move up and down along the outer surface of the first pipe part; The inner diameter of the pipe at the middle end is larger than the inner diameter of the magnetic separation pipe at other positions; The magnetic separator 1 has several head ends 11, several middle ends 12, several tail ends 13, and several first pipe parts 14 and several second pipe parts 15. The magnetic separator 1 is provided with n middle ends 12, and the outer surface of each middle end 12 is provided with an electromagnet 2, and the electromagnets 2 are numbered 1, 2, 3, ... n according to the order of flushing water flow, and the electromagnets 2 are numbered 1, 2, 3, ... n in the corresponding order, and the head end 11 and the tail end 13 are numbered 1, 2, 3, ... n in the corresponding order. The tail end 13 numbered n-1 is connected to the head end 11 numbered n through a connecting end 16, and the electromagnets 2 are closed in sequence according to a certain time interval.

2. The laboratory magnetic separation device according to claim 1, characterized in that: The first tube portion is helical.

3. The laboratory magnetic separation device according to claim 1, characterized in that: It also includes a control system, which is used to control the electromagnet and the flushing device to work.

4. The laboratory magnetic separation device according to claim 1, characterized in that: The magnetic separation tube is connected to a recovery device.

5. The laboratory magnetic separation device according to claim 3, characterized in that: There are a plurality of electromagnets, and the control system controls the electromagnets to be switched on and off sequentially according to the flushing direction.

6. The laboratory magnetic separation device according to claim 1, characterized in that: The magnetic separator tube is a plastic magnetic separator tube.

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