Anti-oxidation sample preparation device for sulfide concentrate

Abstract

The invention discloses a sulfide concentrate anti-oxidation sample preparation device, and belongs to the technical field of ore sample preparation, the sulfide concentrate anti-oxidation sample preparation device comprises: a support cylinder, the axis of which is horizontally arranged and is fixedly connected to a base; the rotating cylinder is arranged in the supporting cylinder, a cooling cabin is formed between the outer wall of the rotating cylinder and the inner wall of the supporting cylinder, the two ends of the rotating cylinder are provided with a feeding pipe and a discharging pipe respectively, the feeding pipe and the discharging pipe are connected with the rotating cylinder through bearings, and the rotating cylinder is made of a non-magnetic alloy material; the rotating motor rotates to drive the rotating cylinder to rotate, in the process, the cooling rods have the cooling effect on the environment in the rotating cylinder, the temperature control magnetic balls generate magnetic force and are adsorbed to the cooling rods after being impacted, rubbed and heated, liquid nitrogen forms nitrogen after absorbing heat and being gasified, and the nitrogen is released into the rotating cylinder from the cooling rods; oxidation of the sulfide concentrate is inhibited from environment control and multi-dimensional cooling, component distortion is avoided, and the sample preparation safety coefficient is increased.

Description

Technical Field

[0001] The invention belongs to the technical field of ore sample preparation, and in particular relates to an anti-oxidation sample preparation device for sulfide concentrate. Background Art

[0002] Sulfide concentrate refers to a high-grade enriched product extracted from sulfide-containing ores through mineral processing. It is mainly composed of metal sulfide minerals and is an important raw material for extracting metals in the metallurgical, chemical and other industries.

[0003] Ball mills and other crushing devices are used in the sample preparation process of sulfide concentrate. The sulfide concentrate is subjected to extrusion and crushing, which increases the temperature of the sulfide concentrate and causes oxidation of the sulfide concentrate. Sulfide is easily oxidized into sulfate, resulting in deviations in the determination of sulfur and metal element content. In addition, the oxidation of high-sulfur concentrate may release toxic gases. Summary of the Invention

[0004] The purpose of the present invention is to solve the above-mentioned problems and to propose a sulfide concentrate anti-oxidation sample preparation device.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: a sulfide concentrate anti-oxidation sample preparation device, which comprises:

[0006] The support cylinder has its axis arranged horizontally and is fixedly connected to the base;

[0007] A rotating cylinder is disposed in the supporting cylinder, wherein a cooling chamber is formed between the outer wall of the rotating cylinder and the inner wall of the supporting cylinder. A feed pipe and a discharge pipe are respectively provided at both ends of the rotating cylinder, and both the feed pipe and the discharge pipe are connected to the rotating cylinder through bearings. The rotating cylinder is made of a non-magnetic alloy material;

[0008] a rotating motor fixedly connected to the base, and the rotating motor is connected to and drives the rotating drum;

[0009] A cooling rod is provided in the rotating cylinder, the interior of the cooling rod is filled with liquid nitrogen, and the cooling rod is made of a magnetic metal material;

[0010] Two plugs, which are respectively clamped at the end of the feed pipe and the end of the discharge pipe, and the two plugs clamp the two ends of the cooling rod, and a vent valve is provided on any of the plugs;

[0011] A plurality of temperature-controlled magnetic balls are arranged in the rotating cylinder, and some of the temperature-controlled magnetic balls magnetically adsorb the cooling rod.

[0012] As a further description of the above technical solution:

[0013] The feed pipe and the rotating motor are both provided with pulleys, and the two pulleys are connected by a synchronous belt.

[0014] As a further description of the above technical solution:

[0015] The support tube is provided with a drain port, which is connected to the cooling chamber.

[0016] As a further description of the above technical solution:

[0017] A plurality of annular grooves are formed on the outer wall of the rotating cylinder.

[0018] As a further description of the above technical solution:

[0019] A plurality of spherical grooves are formed on the surface of the cooling rod.

[0020] As a further description of the above technical solution:

[0021] The temperature-controlled magnetic ball includes two hemispherical metal shells, an insulation layer, a temperature sensor, a control chip, a battery and an electromagnet. The two hemispherical metal shells are symmetrically arranged to form a sphere, and the two hemispherical metal shells are connected by multiple fixing bolts. The hemispherical metal shells are made of non-magnetic alloy material, the insulation layer is filled in the hemispherical metal shells, the temperature sensor is inserted in the insulation layer and fits the hemispherical metal shells, the control chip and the battery are both arranged in the insulation layer, the electromagnet is inserted in the insulation layer, and the temperature sensor, the battery and the electromagnet are all electrically connected to the control chip.

[0022] As a further description of the above technical solution:

[0023] A filter screen is provided in the rotating cylinder.

[0024] As a further description of the above technical solution:

[0025] The inner wall of the rotating cylinder is provided with a wear-resistant layer.

[0026] As a further description of the above technical solution:

[0027] The cooling rod is provided with a pressure relief valve.

[0028] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0029] 1. In the present invention, the rotation of the rotating drum is driven by the rotation of the rotating motor, so that the temperature-controlled magnetic ball and the sulfide concentrate roll and collide to achieve ball milling sample preparation. During the process, the cooling rod has a cooling effect on the environment in the rotating drum, and the coolant filled in the cooling chamber has a cooling effect on the rotating drum. After the temperature-controlled magnetic ball hits and heats up, it generates magnetic force and adsorbs on the cooling rod. After being cooled by the cooling rod, the magnetic force of the temperature-controlled magnetic ball disappears and it falls into the sulfide concentrate, which not only avoids the local temperature increase of the sulfide concentrate but also can effectively cool it. After absorbing heat and vaporizing, liquid nitrogen forms nitrogen gas which is released from the cooling rod into the rotating drum, realizing environmental control and multi-dimensional cooling to suppress the oxidation of the sulfide concentrate, avoid composition distortion, and improve the safety factor of sample preparation.

[0030] 2. In the present invention, coolant is injected into the cooling chamber through the drain port, or the coolant in the cooling chamber is discharged through the drain port. Alternatively, two drain ports may be provided to be connected to a water-cooled circulation system, so that the coolant in the cooling chamber can flow and be replaced in real time, thereby better removing the heat of the support cylinder, achieving real-time and sufficient cooling of the support cylinder, and avoiding oxidation reaction of the sulfide concentrate in the rotating cylinder.

[0031] 3. In the present invention, the control chip and the battery are protected by the thermal insulation layer, and the temperature sensor obtains the temperature data of the hemispherical metal shell and sends it to the control chip. The control chip controls the power on and off of the electromagnet according to the temperature data. When the temperature of the hemispherical metal shell is high, the electromagnet generates magnetism after being energized, and the electromagnet magnetically absorbs the cooling rod, that is, the temperature-controlled magnetic ball will be adsorbed and adhered to the cooling rod during the rolling process of the rotating cylinder. The contact between the hemispherical metal shell and the cooling rod realizes heat transfer, thereby realizing rapid cooling of the hemispherical metal shell. After the hemispherical metal shell is cooled, the magnetism disappears after the electromagnet is powered off, and the temperature-controlled magnetic ball falls back into the sulfide concentrate, realizing that the temperature-controlled magnetic ball fully cools the sulfide concentrate while grinding the sulfide concentrate, thereby avoiding oxidation reaction of the sulfide concentrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematic diagram of the overall structure of a sulfide concentrate anti-oxidation sample preparation device Figure 1 .

[0033] Figure 2 Schematic diagram of the overall structure of a sulfide concentrate anti-oxidation sample preparation device Figure 2 .

[0034] Figure 3 A cross-sectional view of a sulfide concentrate anti-oxidation sample preparation device Figure 1 .

[0035] Figure 4 for Figure 3 A partial enlarged view of part A.

[0036] Figure 5A cross-sectional view of a sulfide concentrate anti-oxidation sample preparation device Figure 2 .

[0037] Figure 6 This is an exploded view of a sulfide concentrate anti-oxidation sample preparation device.

[0038] Legend:

[0039] 1. Support cylinder; 2. Base; 3. Rotating cylinder; 4. Cooling chamber; 5. Feed pipe; 6. Discharge pipe; 7. Bearing; 8. Rotating motor; 9. Cooling rod; 10. Plug; 11. Vent valve; 12. Temperature-controlled magnetic ball; 121. Hemispherical metal shell; 122. Insulation layer; 123. Temperature sensor; 124. Control chip; 125. Battery; 126. Electromagnet; 13. Pulley; 14. Synchronous belt; 15. Drain outlet; 16. Annular groove; 17. Spherical groove; 18. Fixing bolt; 19. Filter; 20. Wear-resistant layer; 21. Pressure relief valve. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0041] See also Figure 1-6 The present invention provides a technical solution: a sulfide concentrate anti-oxidation sample preparation device, comprising:

[0042] The support cylinder 1 is arranged horizontally with its axis and is fixedly connected to the base 2;

[0043] The rotating cylinder 3 is arranged in the supporting cylinder 1. A cooling chamber 4 is formed between the outer wall of the rotating cylinder 3 and the inner wall of the supporting cylinder 1. A feed pipe 5 and a discharge pipe 6 are respectively provided at both ends of the rotating cylinder 3. The feed pipe 5 and the discharge pipe 6 are both connected to the rotating cylinder 3 through bearings 7. The rotating cylinder 3 is made of a non-magnetic alloy material.

[0044] a rotating motor 8 , which is fixedly connected to the base 2 , and the rotating motor 8 is connected to and drives the rotating drum 3 ;

[0045] A cooling rod 9 is provided in the rotating cylinder 3. The interior of the cooling rod 9 is filled with liquid nitrogen and is made of a magnetic metal material.

[0046] Two plugs 10, which are respectively connected to the end of the feed pipe 5 and the end of the discharge pipe 6, and the two plugs 10 clamp the two ends of the cooling rod 9, and a vent valve 11 is provided on each of the plugs 10;

[0047] A plurality of temperature-controlled magnetic balls 12 are disposed in the rotating cylinder 3 , and some of the temperature-controlled magnetic balls 12 magnetically attract the cooling rod 9 ;

[0048] The feed pipe 5 and the rotary motor 8 are both provided with pulleys 13, and the two pulleys 13 are connected by a synchronous belt 14. The rotation of the rotary motor 8 drives the pulley 13 to rotate, and the synchronous belt 14 drives the other pulley 13 to rotate, thereby driving the rotating drum 3 to rotate;

[0049] The support cylinder 1 is provided with a drain port 15, which is connected to the cooling chamber 4. Coolant can be injected into the cooling chamber 4 through the drain port 15, or the coolant in the cooling chamber 4 can be discharged through the drain port 15. Two drain ports 15 can also be provided to connect to the water cooling circulation system to achieve real-time flow and replacement of the coolant in the cooling chamber 4, better remove the heat of the support cylinder 1, and achieve real-time and sufficient cooling of the support cylinder 1, thereby avoiding oxidation reaction of the sulfide concentrate in the rotating cylinder 3.

[0050] The outer wall of the rotating drum 3 is provided with a plurality of annular grooves 16, which increase the contact surface between the rotating drum 3 and the cooling chamber 4, thereby facilitating the heat of the rotating drum 3 to diffuse into the cooling chamber 4, thereby improving the cooling efficiency of the rotating drum 3 and preventing the sulfide concentrate in the rotating drum 3 from undergoing oxidation reaction;

[0051] The surface of the cooling rod 9 is provided with a plurality of spherical grooves 17, which increase the contact surface between the surface of the temperature-controlled magnetic ball 12 and the cooling rod 9, thereby facilitating heat transfer between the two and achieving rapid cooling of the temperature-controlled magnetic ball 12;

[0052] The temperature-controlled magnetic ball 12 includes two hemispherical metal shells 121, a thermal insulation layer 122, a temperature sensor 123, a control chip 124, a battery 125 and an electromagnet 126. The two hemispherical metal shells 121 are symmetrically arranged to form a sphere, and the two hemispherical metal shells 121 are connected by multiple fixing bolts 18. The hemispherical metal shells 121 are made of non-magnetic alloy material. The thermal insulation layer 122 is filled in the hemispherical metal shells 121. The temperature sensor 123 is inserted in the thermal insulation layer 122 and fits the hemispherical metal shells 121. The control chip 124 and the battery 125 are both arranged in the thermal insulation layer 122. The electromagnet 126 is inserted in the thermal insulation layer 122. The temperature sensor 123, the battery 125 and the electromagnet 126 are all electrically connected to the control chip 124. The thermal insulation layer 122 The protection control chip 124 and the battery 125 are provided. The temperature sensor 123 obtains the temperature data of the hemispherical metal shell 121 and sends it to the control chip 124. The control chip 124 controls the power on and off of the electromagnet 126 according to the temperature data. When the temperature of the hemispherical metal shell 121 is high, the electromagnet 126 generates magnetism after being energized. The electromagnet 126 magnetically attracts the cooling rod 9, that is, the temperature-controlled magnetic ball 12 will be attracted and attached to the cooling rod 9 during the rolling process of the rotating cylinder 3. The contact between the hemispherical metal shell 121 and the cooling rod 9 realizes heat transfer, thereby realizing rapid cooling of the hemispherical metal shell 121. After the hemispherical metal shell 121 is cooled, the magnetism of the electromagnet 126 disappears after being powered off, and the temperature-controlled magnetic ball 12 falls back into the sulfide concentrate, realizing that the temperature-controlled magnetic ball 12 fully cools the sulfide concentrate while grinding the sulfide concentrate, thereby preventing the sulfide concentrate from undergoing oxidation reaction.

[0053] The rotating drum 3 is provided with a filter screen 19 for preliminary screening of the ground material;

[0054] The inner wall of the rotating drum 3 is provided with a wear-resistant layer 20 to increase the wear resistance of the rotating drum 3 and extend the service life of the rotating drum 3;

[0055] The cooling rod 9 is provided with a pressure relief valve 21. The nitrogen formed by gasification of the liquid nitrogen in the cooling rod 9 after absorbing heat enters the rotating cylinder 3 through the pressure relief valve 21. The nitrogen is an inert gas and prevents the sulfide concentrate from undergoing oxidation reaction.

[0056] Working principle: First, put the sulfide concentrate to be sampled and multiple temperature-controlled magnetic balls 12 into the rotating cylinder 3. The rotating cylinder 3 and the hemispherical metal shell 121 are both made of non-magnetic alloy materials, so the temperature-controlled magnetic balls 12 will not be magnetically attracted to the rotating cylinder 3. Plug the plug 10 at the discharge pipe 6 and connect the two drain ports 15 to the water-cooled circulation system to achieve real-time flow replacement of the coolant in the cooling chamber 4. Wear protective gloves and put the cooling rod 9 injected with liquid nitrogen into the rotating cylinder 3. Insert one end of the cooling rod 9 into the installed plug 10 and plug the other plug 10. At the feed pipe 5, clamp the other end of the cooling rod 9, extract part of the gas in the rotating cylinder 3 through the vent valve 11, and then inject nitrogen to reduce the oxygen content inside the rotating cylinder 3. Secondly, the rotating motor 8 rotates to drive the pulley 13 to rotate, and under the action of the synchronous belt 14, drives another pulley 13 to rotate, thereby driving the rotating cylinder 3 to rotate. Under the support of the bearing 7, the rotating cylinder 3 rotates smoothly, and the temperature-controlled magnetic ball 12 and the sulfide concentrate roll and collide to realize ball milling. The temperature of the temperature-controlled magnetic ball 12 and the sulfide concentrate also increases, and the heat is transferred to the rotating cylinder 3, cooling The liquid takes away the heat of the rotating cylinder 3 to achieve cooling, and the cooling rod 9 has a cooling effect on the environment in the rotating cylinder 3. During the process, the temperature sensor 123 obtains the temperature data of the hemispherical metal shell 121 and sends it to the control chip 124. The control chip 124 controls the power on and off of the electromagnet 126 according to the temperature data. When the temperature of the hemispherical metal shell 121 is high, the electromagnet 126 generates magnetism after being energized. The electromagnet 126 magnetically absorbs the cooling rod 9, that is, the temperature-controlled magnetic ball 12 will be absorbed and attached to the cooling rod 9 during the rolling process of the rotating cylinder 3. The hemispherical metal shell 121 and the cooling rod 9 are connected. 9 realizes heat transfer, thereby realizing rapid cooling of the hemispherical metal shell 121. After the hemispherical metal shell 121 is cooled, the magnetism of the electromagnet 126 disappears after the power is turned off, and the temperature-controlled magnetic ball 12 falls back into the sulfide concentrate, so that the temperature-controlled magnetic ball 12 can fully cool the sulfide concentrate while grinding the sulfide concentrate. The nitrogen formed by the gasification of the liquid nitrogen in the cooling rod 9 after absorbing heat enters the rotating cylinder 3 through the pressure relief valve 21. Finally, the plug 10 at the discharge pipe 6 is opened, the whole device is tilted, and the fine sulfide concentrate is poured out from the discharge pipe 6 through the filter screen 19 to complete the sample preparation.

[0057] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A sulfide concentrate anti-oxidation sample preparation device, characterized by: include: A support cylinder (1) having its axis arranged horizontally and fixedly connected to the base (2); A rotating cylinder (3) is arranged in the supporting cylinder (1), a cooling chamber (4) is formed between the outer wall of the rotating cylinder (3) and the inner wall of the supporting cylinder (1), a feed pipe (5) and a discharge pipe (6) are respectively provided at both ends of the rotating cylinder (3), the feed pipe (5) and the discharge pipe (6) are both connected to the rotating cylinder (3) through bearings (7), and the rotating cylinder (3) is made of a non-magnetic alloy material; a rotating motor (8) fixedly connected to the base (2), and the rotating motor (8) is connected to and drives the rotating drum (3); A cooling rod (9) is arranged in the rotating cylinder (3), the interior of the cooling rod (9) is filled with liquid nitrogen, and the cooling rod (9) is made of a magnetic metal material; Two plugs (10) are respectively connected to the end of the feed pipe (5) and the end of the discharge pipe (6), and the two plugs (10) clamp the two ends of the cooling rod (9), and a vent valve (11) is provided on any of the plugs (10); A plurality of temperature-controlled magnetic balls (12) are arranged in the rotating cylinder (3), and some of the temperature-controlled magnetic balls (12) magnetically adsorb the cooling rod (9).

2. The sulfide concentrate anti-oxidation sample preparation device according to claim 1, characterized in that: The feed pipe (5) and the rotating motor (8) are both provided with pulleys (13), and the two pulleys (13) are connected by a synchronous belt (14).

3. The sulfide concentrate anti-oxidation sample preparation device according to claim 1, characterized in that: The support tube (1) is provided with a drain port (15), and the drain port (15) is connected to the cooling chamber (4).

4. The sulfide concentrate anti-oxidation sample preparation device according to claim 1, characterized in that: A plurality of annular grooves (16) are provided on the outer wall of the rotating cylinder (3).

5. The sulfide concentrate anti-oxidation sample preparation device according to claim 1, characterized in that: A plurality of spherical grooves (17) are provided on the surface of the cooling rod (9).

6. The sulfide concentrate anti-oxidation sample preparation device according to claim 5, characterized in that: The temperature-controlled magnetic ball (12) comprises two hemispherical metal shells (121), a heat-insulating layer (122), a temperature sensor (123), a control chip (124), a battery (125) and an electromagnet (126). The two hemispherical metal shells (121) are symmetrically arranged to form a sphere, and the two hemispherical metal shells (121) are connected by a plurality of fixing bolts (18). The hemispherical metal shells (121) are made of a non-magnetic alloy material. The heat-insulating layer (122) is filled in the The temperature sensor (123) is inserted into the thermal insulation layer (122) and fits the hemispherical metal shell (121) in the hemispherical metal shell (121). The control chip (124) and the battery (125) are both arranged in the thermal insulation layer (122). The electromagnet (126) is inserted into the thermal insulation layer (122). The temperature sensor (123), the battery (125) and the electromagnet (126) are all electrically connected to the control chip (124).

7. The sulfide concentrate anti-oxidation sample preparation device according to claim 1, characterized in that: A filter screen (19) is provided in the rotating cylinder (3).

8. The sulfide concentrate anti-oxidation sample preparation device according to claim 1, characterized in that: The inner wall of the rotating cylinder (3) is provided with a wear-resistant layer (20).

9. The sulfide concentrate anti-oxidation sample preparation device according to claim 1, characterized in that: The cooling rod (9) is provided with a pressure relief valve (21).

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