A mining oil-water mixing tank and method

Abstract

This invention provides a mining oil-water mixing tank and method. The mixing tank includes a support, a stirrer, a mixing tank, and a drive device. Both the mixing tank and the drive device are mounted on the support. The drive device is connected to the stirrer and drives the stirrer to rotate. The stirrer includes inner and outer rings of stirring blades, which are placed inside the mixing tank. This invention has a simple structure and effectively improves the suspension and circulation of mineral particles and reagents, as well as the pre-mineralization of feed. It features high processing capacity and saves on reagent consumption.

Description

Technical Field

[0001] This invention relates to the field of mining equipment technology, and more particularly to a mining oil-water mixing and stirring tank and method. Background Technology

[0002] Slurry preparation is a necessary step to provide suitable and stable feed for flotation and promote the reaction between reagents and ore pulp. Mixed tanks are the most widely used slurry preparation equipment in concentrators and laboratories. They mainly achieve ore pulp circulation and reagent dispersion through a circulation sleeve and an impeller. The circulation sleeve has circulation holes, and due to the negative pressure at the center of the fan-shaped impeller, the upper ore pulp continuously circulates through these holes. However, since the density of minerals is generally 2 to 5 times that of water, and oil flotation reagents are 0.7 to 0.9 times that of water, and some solid flotation reagents have poor water solubility, existing mixed tanks have limited ability to mix and disperse stratified feed, resulting in insufficient reaction between minerals and reagents, requiring longer slurry preparation times, and increasing reagent consumption.

[0003] Therefore, in order to address the shortcomings of existing mixing tanks, it is necessary to design a new type of mixing tank and its usage method. Based on a simple structure, it can effectively improve the suspension and circulation of mineral particles and reagents, as well as the pre-mineralization of feed, and has the characteristics of strong processing capacity, stable feeding, and saving reagent consumption. Summary of the Invention

[0004] In response to the aforementioned technical problems, a mining oil-water mixing tank and method are provided.

[0005] The technical means employed in this invention are as follows:

[0006] A mining oil-water mixing tank includes: a support, a stirrer, a mixing tank, and a drive device. The mixing tank and the drive device are both mounted on the support. The drive device is connected to the stirrer and is used to drive the stirrer to rotate. The stirrer includes inner and outer rings of stirring blades, which are placed inside the mixing tank.

[0007] Furthermore, the inner and outer rings of stirring blades are inclined multi-layered blades, with both the inner and outer rings having upper and lower layers of blades, and the outer ring blades and the inner ring blades being arranged in opposite directions.

[0008] Furthermore, multiple blades in the upper inner ring are arranged clockwise and upward along the circumference, multiple blades in the lower inner ring are arranged clockwise and downward along the circumference, multiple blades in the upper outer ring are arranged counterclockwise and upward along the circumference, and multiple blades in the lower outer ring are arranged counterclockwise and downward along the circumference.

[0009] The stirrer also includes a stirring rod, one end of which is connected to the stirring blades, and the other end extends to the outside of the stirring tank and is connected to the drive device.

[0010] Furthermore, the inner wall of the mixing tank is provided with multiple inclined guide baffles along the circumferential direction, and an inclined guide groove is formed between adjacent guide baffles; a circumferential grid plate is provided in the middle of the mixing tank, the grid plate is located between the inner ring blades and the outer ring blades, and the guide baffle is located outside the outer ring blades.

[0011] Furthermore, the bottom surface of the mixing tank is a conical slope, and the lower end of the mixing tank is provided with a discharge port and a discharge valve, with the discharge valve installed at the discharge port.

[0012] Furthermore, the top of the mixing tank is equipped with a tank cover, and the tank cover is provided with a chemical dosing port and a ore inlet that communicate with the inside of the mixing tank.

[0013] Furthermore, the driving device includes a motor, a first pulley, a second pulley, and a belt. The motor is fixed on the bracket, and the output end of the motor is connected to the first pulley. The two ends of the belt are respectively connected to the first pulley and the second pulley. The second pulley is connected to the stirring rod, and the stirring blade is driven by the motor to rotate clockwise via the belt.

[0014] This invention also provides a method for using a mining oil-water mixing and slurry mixing tank, comprising the following steps:

[0015] Step 1: Assemble the mixing tank;

[0016] Step 2: Add mineral slurry or mineral powder into the mixing tank, turn on the motor, and start slow mixing;

[0017] Step 3: Add an appropriate amount of flotation reagent and water to the mixing tank, increase the motor speed to the set value, and under the action of the agitator and the guide channel, the slurry in the mixing tank begins to form a stable slurry circulation; the slurry is divided into upper, middle and lower layers. Inside the grid plate of the mixing tank, the upper and lower layers of slurry flow to the middle layer, and outside the grid plate, the middle layer of slurry flows to the upper and lower layers. The slurry inside the grid plate flows to the outside of the grid plate under the action of the blade agitation. Adjust the slurry for 5 to 10 minutes.

[0018] Step 4: Open the ore discharge valve, and the slurry will be discharged from the bottom;

[0019] Step 5: The slurry or ore is steadily and continuously added from the inlet on the mixing tank cover. The flotation reagents and water are added into the mixing tank through the peristaltic pump inlet. The addition rate of the flotation reagents and water is adjusted according to the feed rate.

[0020] Step 6: Adjust the discharge valve to balance the slurry level in the mixing tank;

[0021] Step 7: When the flotation test is completed or the mixing tank needs to be shut down, first stop feeding ore and dosing, and after the mixing tank is drained, turn off the motor and clean the mixing tank.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] 1. The mining oil-water mixing and slurry mixing tank and method provided by the present invention have inclined multi-layered mixing blades, divided into inner and outer layers and upper and lower layers. The inner wall of the mixing tank is provided with inclined guide grooves. During mixing, the upper and lower layers form slurry circulation, which promotes the circulation of surface oil and ester flotation reagents and bottom settled minerals to the middle of the slurry, promotes the mixing of slurry and reagents at different heights, and improves the stability of slurry discharge and pre-mineralization effect.

[0024] 2. The mining oil-water mixing tank and method provided by the present invention have a grid plate in the middle of the double-layer blades inside the mixing tank, which promotes the vertical movement of the slurry in the grid plate and the mixing of slurries at different heights. The slurry through the grid plate is easy to form turbulence, which is beneficial to premineralization.

[0025] 3. The mining oil-water mixing tank and method provided by the present invention have a simple structure and effectively improve the suspension and circulation of mineral particles and reagents, as well as the pre-mineralization of feed. They have the characteristics of strong processing capacity and saving reagent consumption, and have great potential for widespread application.

[0026] Based on the above reasons, this invention can be widely applied in fields such as mixing. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of a mining oil-water mixing and slurry mixing tank according to the present invention.

[0029] Figure 2 This is an exploded view of a mining oil-water mixing tank according to the present invention.

[0030] Figure 3 This is a schematic diagram of the slurry flow direction in a mining oil-water mixing and stirring tank according to the present invention.

[0031] In the diagram: 1. Support frame; 2. Agitator; 3. Mixing tank; 4. Motor; 5. Tank lid; 6. Belt; 7. Agitator blades; 8. Baffle plate; 9. Grid plate; 10. Conical inclined surface; 11. Discharge port and discharge valve; 12. Chemical dosing port; 13. Inlet. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0035] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0036] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0037] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0038] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0039] Slurry conditioning is a necessary step in flotation to provide suitable and stable feed and promote the reaction between reagents and the ore pulp. The stirred tank is the most widely used slurry conditioning equipment in concentrators and laboratories. It mainly achieves ore pulp circulation and reagent dispersion through a circulating sleeve and agitator impeller. While its structure is simple, it lacks sufficient ability to promote mineral particle suspension, hydrocarbon and oil flotation reagent dispersion, and feed pre-mineralization. To address the shortcomings of existing technologies, such as... Figure 1-3 As shown, this invention provides a mineral oil-water mixing and slurry preparation tank, belonging to the category of slurry preparation and pretreatment equipment for flotation feed. This invention overcomes the problem of low mixing efficiency of minerals, water, and oil in existing technologies. Using the mixing tank of this invention can effectively improve the suspension and circulation of mineral particles and reagents, as well as the pre-mineralization of the feed, achieving high processing capacity, stable feeding, and reduced reagent consumption.

[0040] A mining oil-water mixing tank includes the following components: a support 1, a mixer 2, a mixing tank 3, a motor 4, a tank cover 5, and a belt 6. The mixing tank 3 is vertically mounted on the support 1, the motor 4 is fixed on the support 1, the output end of the motor 4 is connected to the first pulley, the two ends of the belt 6 are respectively connected to the first pulley and the second pulley, and the second pulley is connected to the upper end of the mixing rod of the mixer 2.

[0041] The lower stirring section of the stirrer 2 has two rings of stirring blades 7, one inner and one outer. Each ring is divided into upper and lower layers. The stirring blades 7 are connected to the lower end of the stirring rod and placed inside the stirring tank 3. The inner and outer rings of stirring blades 7 are inclined multi-layered blades, with multiple inclined blades in each layer. The upper layer of blades in the inner ring rotates clockwise upwards, and the lower layer rotates clockwise downwards. The outer ring blades are arranged in the opposite direction to the inner ring blades, i.e., the upper layer of blades in the outer ring rotates counterclockwise upwards, and the lower layer rotates counterclockwise downwards. The stirring blades 7 are driven by the motor 4 to rotate clockwise via the belt 6.

[0042] The inner wall of the mixing tank 3 is provided with multiple inclined guide baffles 8 along the circumferential direction, and inclined guide grooves are formed between adjacent guide baffles 8. A circumferential grid plate 9 is provided in the middle of the mixing tank 3, located between the inner and outer ring blades, with the guide baffles 8 located outside the outer ring blades. The bottom of the mixing tank 3 is a conical inclined surface 10. A discharge port and a discharge valve 11 are provided at the lower end of the mixing tank 3, with the discharge valve installed at the discharge port.

[0043] The top of the mixing tank 3 is provided with a tank cover 5, and the tank cover 5 is provided with a chemical dosing port 12 and a ore inlet 13 that are connected to the inside of the mixing tank 3.

[0044] This invention also provides a method for using a mining oil-water mixing tank to enhance the mixing process, comprising the following steps:

[0045] Step 1: Assemble the above-mentioned slurry mixing tank;

[0046] Step 2: Add slurry or powder to mixing tank 3, turn on motor 4, and start slow mixing;

[0047] Step 3: Add an appropriate amount of flotation reagent and water to the mixing tank 3, and increase the speed of motor 4 to the set value. Under the action of agitator 2 and guide channel, the slurry in the mixing tank 3 begins to form a stable slurry circulation. The slurry is divided into upper, middle and lower layers. Inside the grid plate 9 of the mixing tank 3, the upper and lower layers of slurry flow towards the middle layer, and outside the grid plate 9, the middle layer of slurry flows towards the upper and lower layers. The slurry inside the grid plate 9 flows outward under the action of blade agitation. Adjust the slurry for 5-10 minutes.

[0048] Step 4: Open the ore discharge valve, and the slurry will be discharged from the bottom;

[0049] Step 5: The slurry or ore is steadily and continuously added from the feed port (ore inlet 13) of the mixing tank cover 5. The flotation reagent and water are added into the mixing tank 3 through the peristaltic pump dosing port 12. The addition rate of flotation reagent and water is adjusted according to the feed rate.

[0050] Step 6: Adjust the discharge valve to balance the slurry level in mixing tank 3;

[0051] Step 7: When the flotation test is completed or the mixing tank needs to be shut down, first stop feeding ore and dosing. After the mixing tank 3 is drained, turn off the motor 4 and clean the mixing tank 3.

[0052] Example 1

[0053] First, assemble the above-mentioned slurry mixing tank; then, add vanadium-titanium magnetite strong magnetic concentrate to the mixing tank, turn on the motor, and start slow stirring; add appropriate amounts of sulfuric acid, xanthate, and No. 2 oil to the mixing tank, increase the motor speed to 500 rpm, and under the action of the agitator and guide channel, the slurry in the mixing tank begins to form a stable slurry circulation, and start slurry conditioning for 10 minutes; open the discharge valve, and the slurry is discharged from the bottom and fed into the flotation column; use a pendulum feeder to feed vanadium-titanium magnetite strong magnetic concentrate from the feed port on the mixing tank cover, and feed sulfuric acid, xanthate, No. 2 oil, and water from the reagent inlet on the mixing tank cover, adjusting the reagent and water addition rate according to the feed rate; adjust the discharge valve to balance the slurry level in the mixing tank; at the end of the flotation test, first stop feeding and reagents, wait for the mixing tank to be drained, turn off the motor, and clean the mixing tank.

[0054] Working principle: Inside the mixing tank, the slurry flows under the action of the agitator, flowing from the inside to the outside. A negative pressure zone is formed inside the agitator blades, and a positive pressure zone is formed outside. The slurry in the positive pressure zone outside the agitator bypasses the upper and lower ends of the blades and enters the negative pressure zone inside the agitator. When the slurry circulation stabilizes, the slurry is divided into upper, middle, and lower layers. Inside the grid plate of the mixing tank, the upper and lower layers of slurry flow towards the middle layer. Heavier minerals and lighter hydrocarbon oils mix in the middle. As the slurry passes through the grid plate, it easily forms turbulence, which is beneficial to mineral mineralization.

[0055] Through laboratory flotation slurry conditioning tests, the oil-water mixing tank for mining of this invention has the advantages of stable flotation feeding, strong processing capacity, strong pre-mineralization capacity, and good application effect.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mining oil-water mixing and slurry mixing tank, characterized in that, include: The frame (1), stirrer (2), mixing tank (3) and driving device are mounted on the frame (1). The driving device is connected to the stirrer (2) and is used to drive the stirrer (2) to rotate. The stirrer (2) includes two rings of stirring blades (7) inside and outside. The stirring blades (7) are placed inside the mixing tank (3). The inner and outer rings of stirring blades (7) are inclined multi-layer blades, and both the inner and outer rings have upper and lower layers of blades. The outer ring blades and the inner ring blades are set in opposite directions. Multiple blades in the upper inner ring are arranged clockwise and upward along the circumference, while multiple blades in the lower inner ring are arranged clockwise and downward along the circumference. Multiple blades in the upper outer ring are arranged counterclockwise and upward along the circumference, while multiple blades in the lower outer ring are arranged counterclockwise and downward along the circumference. The inner wall of the mixing tank (3) is provided with multiple inclined guide baffles (8) along the circumferential direction, and an inclined guide groove is formed between adjacent guide baffles (8); a circumferential grid plate (9) is provided in the middle of the mixing tank (3), the grid plate (9) is located between the inner ring blades and the outer ring blades, and the guide baffle (8) is located outside the outer ring blades; During stirring, the upper and lower layers form slurry circulation, which promotes the circulation of surface oil and ester flotation reagents and bottom sedimented minerals to the middle of the slurry, promotes the mixing of slurry and reagents at different heights, and improves the stability of slurry discharge and premineralization effect. Inside the mixing tank (3), there is a grid plate (9) between the double-layer blades, which promotes the vertical movement of the slurry in the grid plate (9). The slurry at different heights is mixed, and the slurry easily forms turbulence through the grid plate (9), which is beneficial to premineralization.

2. The mining oil-water mixing and slurry mixing tank according to claim 1, characterized in that, The stirrer (2) also includes a stirring rod, one end of which is connected to the stirring blade (7), and the other end extends to the outside of the stirring tank (3) and is connected to the driving device.

3. The mining oil-water mixing and slurry mixing tank according to claim 1, characterized in that, The bottom surface of the mixing tank (3) is a conical inclined surface (10). The lower end of the mixing tank (3) is provided with a discharge port and a discharge valve (11). The discharge valve is installed at the discharge port.

4. The mining oil-water mixing and slurry mixing tank according to claim 1, characterized in that, The top of the mixing tank (3) is equipped with a lid (5), and the lid (5) is provided with a chemical dosing port (12) and a ore inlet (13) that are connected to the inside of the mixing tank (3).

5. The mining oil-water mixing and slurry mixing tank according to claim 1, characterized in that, The driving device includes a motor (4), a first pulley, a second pulley, and a belt (6). The motor (4) is fixed on the bracket (1). The output end of the motor (4) is connected to the first pulley. The two ends of the belt (6) are connected to the first pulley and the second pulley, respectively. The second pulley is connected to the stirring rod. The stirring blade (7) is driven by the motor (4) to rotate clockwise through the belt (6).

6. A method of using the mining oil-water mixing and slurry mixing tank as described in any one of claims 1-5, characterized in that, Includes the following steps: Step 1: Assemble the mixing tank; Step 2: Add slurry or powder to the mixing tank (3), turn on the motor (4), and start slow mixing; Step 3: Add an appropriate amount of flotation reagent and water to the mixing tank (3), increase the speed of the motor (4) to the set value, and under the action of the agitator (2) and the guide channel, the slurry in the mixing tank (3) begins to form a stable slurry circulation; the slurry is divided into upper, middle and lower layers. In the grid plate (9) of the mixing tank (3), the upper and lower layers of slurry flow to the middle layer, and the middle layer of slurry outside the grid plate (9) flows to the upper and lower layers. The slurry inside the grid plate (9) flows to the outside of the grid plate (9) under the action of the blade agitation. Adjust the slurry for 5~10 minutes; Step 4: Open the ore discharge valve, and the slurry will be discharged from the bottom; Step 5: The slurry or ore is steadily and continuously added from the inlet (13) on the mixing tank cover (5). The flotation reagent and water are added into the mixing tank (3) through the peristaltic pump inlet (12). The addition speed of the flotation reagent and water is adjusted according to the feed rate. Step 6: Adjust the discharge valve to balance the slurry level in the mixing tank (3); Step 7: When the flotation test is completed or the mixing tank needs to be shut down, first stop feeding ore and dosing, and after the mixing tank (3) is drained, turn off the motor (4) and clean the mixing tank (3).

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