CN214288782U

CN214288782U - Closed-circuit type drum magnetic separator

Info

Publication number: CN214288782U
Application number: CN202023177367.0U
Authority: CN
Inventors: 李国洲
Original assignee: Northern Engineering and Technology Corp MCC
Current assignee: Northern Engineering and Technology Corp MCC
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-09-28
Anticipated expiration: 2030-12-25

Abstract

The utility model discloses a closed circuit formula cylinder magnet separator, including the ore feeding case of cylinder magnet separator, the separation tank, permanent magnetism separation roller, the tailing case, concentrate case and control box, a serial communication port, be provided with a division board that leads to long at the concentrate case, divide into left side box and right side box two parts with the concentrate case, be equipped with the level gauge in the top of left side box, the concentrate discharge port of separation tank inserts in the right side box, set up the agitator along length direction equidistant equipartition in the box of right side, be equipped with concentrate ore discharge pipe and electrical control valve I in the bottom of box of right side, be equipped with two ore distribution pipes in the outside of concentrate case, two ore distribution pipes are connected with the return main respectively, return main's end and feeding case intercommunication return main be equipped with electrical control valve II, force (forcing) pump and densimeter on the return main. The utility model has the advantages that: unqualified concentrate returns to the drum magnetic separator for recleaning, so that the percent of pass of the concentrate product is ensured, and the concentrate grade is improved.

Description

Closed-circuit type drum magnetic separator

Technical Field

The utility model belongs to the technical field of the concentrator magnetic separation equipment, concretely relates to closed circuit formula cylinder magnet separator.

Background

Since most of the useful minerals of iron ore have certain magnetic property, magnetic separation is the most main beneficiation method for iron ore, wherein strong magnetic minerals such as magnetite and titanomagnetite are separated by a cylindrical magnetic separator with weak magnetic field intensity, and weak magnetic minerals such as hematite, limonite, specularite and the like are separated by a vertical ring strong magnetic separator and a horizontal ring strong magnetic separator with strong magnetic field intensity.

For magnetite mine stopes, two problems exist, namely, the ore properties of all mining points are different and often fluctuate greatly, and the ore preparation measures of the stopes are not in place, so that the properties of raw ores conveyed to an ore dressing plant are often changed greatly, and the ores which are difficult to grind and select are often found; secondly, the ore mined in the later period of the stope has the problem that the grade and the selectivity of the raw ore conveyed to a dressing plant are greatly reduced due to the increase of the mixing rate of the waste rocks; the two situations can cause the ore feeding grade of a concentration drum type magnetic separator at the tail end of the magnetic separation process of the concentrating plant to be reduced, so that the concentrate grade is reduced, the final concentrate grade cannot meet the requirement of sales, the price of the concentrate is reduced, and the economic benefit of the concentrating plant is seriously influenced.

Therefore, it is necessary to improve the drum magnetic separator and develop a device which can adapt to the reduction of the ore feeding grade and can effectively adjust the final iron ore concentrate grade of the drum magnetic separator.

Disclosure of Invention

The utility model aims at providing a can adapt to and give ore grade reduction, can effectively heighten the closed circuit formula cylinder magnet separator of final iron ore concentrate grade.

The utility model discloses a closed circuit formula cylinder magnet separator realizes through following technical scheme:

the utility model discloses a closed circuit formula cylinder magnet separator, including the feed box, separation tank, permanent magnetism separation roller, concentrate case ore discharge tube, tailing case ore discharge tube and the control box of cylinder magnet separator, the concentrate case communicate with the concentrate discharge port of separation tank, the tailing case communicate with the tailing discharge port of separation tank bottom, its characterized in that, concentrate incasement along length direction be provided with a full length division board, divide into left side box and right side box two parts with the concentrate case, the last edge of division board and concentrate case go up along the parallel and level, the lower edge of division board is higher than the bottom of concentrate case; a liquid level meter is arranged above the left box body, a concentrate discharge port of the separation groove is inserted into the right box body, stirrers are uniformly distributed in the right box body along the length direction at equal intervals, a concentrate box ore discharge pipe is arranged at the bottom of the right box body, an electric regulating valve I is arranged on the ore discharging pipe of the concentrate box, two ore outlets are arranged on the right box body along the length direction, two ore distributing pipes are arranged at the outer side of the concentrate box along the length direction and corresponding to the two ore outlets, one end of each ore distributing pipe is respectively connected with the two ore outlets, the other end of each ore distributing pipe is respectively connected with a return main pipe, the tail end of each return main pipe is communicated with the ore feeding box, an electric regulating valve II, a pressure pump and a concentration meter are arranged on the ore return main pipe, the height of the pressure pump is 200-600mm below the high liquid level of the concentrate tank, and the electric control valve I, the electric control valve II, the pressure pump and the concentration meter are electrically connected with the control box.

Preferably, the diameter of the ore separation pipe ranges from 50mm to 100 mm.

The lower edge of the partition plate is 100-200 mm higher than the bottom of the concentrate tank.

Preferably, the ore discharging pipe of the concentrate tank is further provided with a sampler and an automatic level indicator connected with the sample pipe of the sampler, and the automatic level indicator is electrically connected with the control box.

Preferably, the concentrate box is further provided with a replenishing water pipe, the replenishing water pipe is provided with an electric regulating valve III, and the electric regulating valve III is electrically connected with the control box and interlocked with a concentration meter on the return main pipe.

Preferably, the liquid level meter is provided with a high liquid level alarm and a low liquid level alarm, the high liquid level alarm is set to be 100mm away from the upper edge of the concentrate tank, the low liquid level alarm is set to be 100mm away from the upper part of the ore separation pipe, and the alarm signal of the liquid level meter is interlocked with the reversible motor of the electric regulating valve I on the ore discharge pipe of the concentrate tank.

Compared with the prior art, the utility model has the advantages that:

1) the closed-circuit drum magnetic separator returns partial concentrate in the concentrate tank to the feed tank of the drum magnetic separator through the pressure pump of the return main pipe, so that the closed-circuit concentration of the partial concentrate is realized again to improve the grade, the concentrate grade of unqualified concentrate products can be correspondingly improved, the qualified concentrate products are ensured to be obtained, and the smooth sale and the economic benefit of the concentrate products are ensured;

2) the utility model discloses a concentrate case has divided into left and right sides two parts through the division board, and the lower part intercommunication of two parts forms the linker. The right side of the tank body is used for receiving concentrate and discharging concentrate, and the left side of the tank body is only used for measuring liquid level, so that the tank body on the left side avoids disturbance of the ore to the liquid level, a stable liquid level is formed, and the accuracy of liquid level measurement is guaranteed;

3) the low liquid level alarm arranged in the concentrate box of the utility model is 100mm higher than the ore separating pipe, and the stable liquid level control realizes the stability of the pressure of the feed inlet of the ore separating pipe, thereby ensuring the stable supply of return ores; the high liquid level alarm arranged in the concentrate tank of the utility model ensures that concentrate does not overflow from the concentrate tank, and avoids the loss of concentrate;

4) the right box body of the concentrate box of the utility model is provided with the stirrer group to realize the uniformity of the concentration of the ore pulp in the right box body, thereby avoiding the situation that the deposit of the concentrate at the bottom of the box body causes no concentrate in the shunted ore pulp, and ensuring the regulation effect of the returned ore pulp on the grade of the concentrate;

5) the utility model discloses a level gauge, the motor drive signal of concentration meter and all adjusting valve, the detected signal of automatic level appearance all is connected with the control box to automatic operation, this kind of mode can not only real-time detection and control, does not need manual operation moreover, has saved the human cost.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a view a-a of fig. 1.

Detailed Description

The following further describes the embodiments of the present invention with reference to the drawings.

As shown in figures 1 and 2, the utility model discloses a closed-circuit cylinder magnetic separator, including the ore feeding box 1, the separation groove 2, the permanent magnetism separation drum 3, the concentrate box 4, the concentrate box ore discharge pipe, the tailing box 5, the tailing box ore discharge pipe and the control box of cylinder magnetic separator, the concentrate box 4 communicate with the concentrate discharge port of separation groove 2, the tailing box 5 communicate with the tailing discharge port of separation groove bottom, characterized in that, there is a through-length division board 11 along the length direction in the concentrate box 4, divide the concentrate box into left side box and right side box two parts, the upper edge of the division board 11 is level with the upper edge of the concentrate box, the lower edge of the division board 11 is higher than the bottom of the concentrate box 100mm-200mm, there is a level gauge 12 above the left side box, the concentrate discharge port of the separation groove 2 insert in the right side box, there are two stirrers 15 along the length direction equidistant equipartition in the right side box, the ore discharging pipe 13 of the ore concentrate box is arranged at the bottom of the box body on the right side, the ore discharging pipe 13 of the ore concentrate box is provided with an electric regulating valve I14, the box body on the right side is provided with two ore outlets along the length direction, the outer side of the ore concentrate box along the length direction and the positions corresponding to the two ore outlets are provided with two ore distributing pipes 6, the diameter range of the two ore distributing pipes 6 is 50-100 mm, one ends of the two ore distributing pipes 6 are respectively connected with the two ore outlets, the other ends of the two ore distributing pipes are respectively connected with a return main pipe 7, the tail end of the return main pipe 7 is communicated with the ore feeding box 1, the return main pipe 7 is provided with an electric regulating valve II 8, a pressure pump 9 and a concentration meter 10, the height of the pressure pump is 200-600mm below the high liquid level of the ore concentrate box, and the electric regulating valve I14, the electric regulating valve II 8, the pressure pump 9 and the concentration meter 10 are all electrically connected with the control box.

The utility model discloses divide into left side box and right side box two parts with the concentrate case through division board 11, the lower part UNICOM of two parts forms the linker. The right side of which is used for receiving concentrate and discharging concentrate and the left side is used only for measuring the liquid level. According to the structure, the left box body avoids disturbance of the ore to the liquid level, a stable liquid level is formed, and the accuracy of liquid level measurement is guaranteed.

The utility model discloses concentrate case ore discharge pipe 13 on still be equipped with sampler 16 and the automatic level appearance 18 of being connected with sampler 16's sample cell 17, automatic level appearance 18 and control box electric property link to each other. The utility model discloses a concentrate grade adopts automatic level appearance 18 to detect, provides concentrate grade information on line in real time to can change the ore return volume according to the current of the governing valve of concentrate grade information change condition interlocking drive adjustment ore return house steward and force (forcing) pump, and then reach the purpose of adjustment concentrate grade; the adjustment mode is timely and rapid, and the acquisition of qualified grade concentrate is ensured. The sampler is arranged in front of the automatic level meter, so that the feeding representativeness of the automatic level meter is ensured, and the accuracy of grade measurement is ensured.

The utility model discloses be equipped with the low-grade warning on automatic level appearance 18, when the detection grade of automatic level appearance is less than the low-grade given value, the reversible motor of electric control valve II increases the valve aperture on the automatic interlocking return main to the electric current that increases the force (forcing) pump increases the flow, thereby increases the concentrate volume that returns, thereby the concentrate that this part returned has increased the chance that once choice reaches the purpose that improves concentrate product grade. This process is continued until the alarm is released.

The utility model discloses the concentrate case on still be equipped with and add water pipe 19 on be equipped with electrical control valve III 20, electrical control valve III 20 link to each other with the control box electrical property. The utility model discloses an add the interlock of concentration meter 10 on III 20 of electrical control valve of water pipe and the return mine house steward, realized the concentrate and given the accurate control of ore concentration between 25% ~35% best magnetic separation concentration, ensured the effect of magnetic separation.

Level gauge on be equipped with high liquid level alarm and low liquid level alarm, high liquid level is reported to the police and is set for along 100mm on the distance concentrate case, low liquid level is reported to the police and is located distance branch ore deposit pipe top 100mm, the alarm signal that the level gauge was reported to the police and the reversible motor interlock of electrical control valve I14 on the concentrate case ore discharge pipe.

The automatic level meter is provided with a low-grade alarm, when the detected grade of the automatic level meter is lower than a low-grade given value, a reversible motor of an electric control valve II 8 on the automatic interlocking return main pipe increases the opening of a valve and increases the current of a pressure pump to increase the flow, so that the amount of returned concentrate is increased, and the returned concentrate increases the opportunity of one-time concentration, so that the purpose of improving the grade of a concentrate product is achieved. This process is continued until the alarm is released.

The utility model discloses a level gauge, concentration meter and all electric regulating valve's motor drive signal, the detected signal of automatic level appearance all is connected with the control box to automatic operation. The mode can not only realize real-time detection and control, but also does not need manual operation, thereby saving the labor cost.

In the description of the present invention, it should be understood that the terms "upper portion", "lower portion", "left side", "right side" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Claims

1. A closed-circuit drum magnetic separator comprises an ore feeding box, a separation groove, a permanent magnet separation roller, a concentrate box ore discharge pipe, a tailing box ore discharge pipe and a control box of the drum magnetic separator, wherein the concentrate box is communicated with a concentrate discharge port of the separation groove, the tailing box is communicated with the tailing discharge port at the bottom of the separation groove, the closed-circuit drum magnetic separator is characterized in that a through long separation plate is arranged in the concentrate box along the length direction, the concentrate box is divided into a left box body and a right box body, the upper edge of the separation plate is flush with the upper edge of the concentrate box, the lower edge of the separation plate is higher than the bottom of the concentrate box, a liquid level meter is arranged above the left box body, the concentrate discharge port of the separation groove is inserted into the right box body, stirrers are uniformly distributed in the right box body along the length direction at equal intervals, the concentrate box ore discharge pipe is arranged at the bottom of the right box body, the ore discharging pipe of the concentrate tank is provided with an electric regulating valve I, the right tank body is provided with two ore outlets along the length direction, the outer side of the concentrate tank along the length direction and the corresponding positions of the two ore outlets are provided with two ore separating pipes, one end of each ore separating pipe is connected with the two ore outlets, the other end of each ore separating pipe is connected with an ore returning main pipe, the tail end of each ore returning main pipe is communicated with an ore feeding tank, the ore returning main pipe is provided with an electric regulating valve II, a pressure pump and a concentration meter, the pressure pump is arranged at a position 200-600mm below the high liquid level of the concentrate tank, and the electric regulating valve I, the electric regulating valve II, the pressure pump and the concentration meter are electrically connected with a control box.

2. The closed-circuit drum magnetic separator according to claim 1, wherein the diameter of said ore-separating tube is in the range of 50mm to 100 mm.

3. The closed-circuit drum magnetic separator as claimed in claim 1, wherein the lower edge of the partition plate is 100mm-200mm higher than the bottom of the concentrate tank.

4. The closed-circuit drum magnetic separator as claimed in claim 1, wherein the ore discharging pipe of the concentrate tank is further provided with a sampler and an automatic level meter connected with the sample pipe of the sampler, and the automatic level meter is electrically connected with the control box.

5. The closed-circuit drum magnetic separator as claimed in claim 1, wherein a replenishing water pipe is further provided on the concentrate tank, an electric control valve III is provided on the replenishing water pipe, and the electric control valve III is further electrically connected with the control box and interlocked with a concentration meter on the return main pipe.

6. The closed-circuit drum magnetic separator according to claim 1, wherein the level meter is provided with a high level alarm and a low level alarm, the high level alarm is set to be 100mm away from the upper edge of the concentrate tank, the low level alarm is set to be 100mm away from the upper part of the ore separation pipe, and the alarm signal reported by the level meter is interlocked with the reversible motor of the electric control valve I on the ore discharge pipe of the concentrate tank.