A sedimentation-type mineral processing reagent synthesis reactor

Abstract

This utility model relates to the technical field of non-ferrous metal flotation reagent synthesis reaction equipment. It provides a sedimentation-type mineral processing reagent synthesis reactor, including a tank body. A motor is installed at the top of the tank body, and the motor is connected to a stirring shaft via a gear set. The tank body is divided into an upper chamber and a lower chamber by a filter baffle. The side wall of the tank body has a feed port and a discharge port communicating with the upper chamber, and the bottom of the tank body has a slag discharge port communicating with the lower chamber. Heating wires are arranged circumferentially on the inner wall of the upper chamber. The tank body has a heating box for heating the heating wires. The heating wires are sequentially covered with a ceramic layer and an anti-vortex layer. The tank body is divided into a reaction zone in the upper chamber and a sedimentation zone in the lower chamber. The crystals naturally settle into the lower chamber, while the clear liquid remains in the upper chamber. The heating wires arranged circumferentially on the inner wall of the upper chamber, covered with a ceramic layer and an anti-vortex layer, evenly transfer the heat generated by the heating wires to the inner wall of the tank body, changing the material flow direction, reducing the dead zone of stirring, and making the temperature and concentration distribution more uniform.

Description

Technical Field

[0001] This utility model relates to the technical field of non-ferrous metal flotation reagent synthesis reaction equipment, and more specifically, to a precipitation-type mineral processing reagent synthesis reactor. Background Technology

[0002] In the synthesis of non-ferrous metal flotation reagents, the stirred reactor is a key piece of equipment, and traditional processes often employ ambient temperature stirring synthesis. However, this method is significantly constrained by ambient temperature and raw material characteristics: in low-temperature environments (especially in northern winters), some reagent components are prone to crystallization or precipitation, preventing the materials from fully integrating. These crystals may deposit at the bottom of the reactor, adhere to the inner wall, or mix with the liquid, not only causing loss of effective components but also severely hindering material transfer and reaction uniformity, ultimately affecting product quality and production efficiency.

[0003] Currently, the industry commonly uses steam heating and insulation to inhibit chemical crystallization. However, controlling steam pressure is difficult, poses safety hazards, and requires additional pressure-reducing valves, increasing costs. Furthermore, heating the outside of the tank can lead to uneven internal heating, exacerbating localized crystallization. More seriously, crystals continuously adhere to the inner wall of the tank and clog the discharge port, forcing production to be interrupted for cleaning. This not only reduces product stability but also significantly increases labor intensity and production costs, causing numerous inconveniences in actual operation. Utility Model Content

[0004] The purpose of this invention is to provide a sedimentation-type mineral processing reagent synthesis reactor, which solves the problems of uneven material mixing and precipitate blockage of the discharge port caused by crystallization in existing reactors at low temperatures.

[0005] This utility model is achieved through the following technical solution: a sedimentation-type mineral processing reagent synthesis reactor, including a tank body, a motor installed at the top of the tank body, the motor being connected to a stirring shaft via a gear set, the tank body being divided into an upper chamber and a lower chamber by a filter baffle, the side wall of the tank body being provided with a feed port and a discharge port communicating with the upper chamber, the bottom of the tank body being provided with a slag discharge port communicating with the lower chamber, heating wires being arranged circumferentially on the inner wall of the upper chamber, the tank body being provided with a heating box for heating the heating wires, the heating wires being covered with a ceramic layer and an anti-eddy current layer in sequence.

[0006] Furthermore, the anti-vortex layer is cylindrical, and the outer wall of the anti-vortex layer is tightly fitted to the inner wall of the tank, while the edge of the inner wall of the anti-vortex layer is wavy.

[0007] Furthermore, the discharge port is arranged flush with the filter baffle, and a filter screen is connected to one end of the discharge port inside the tank.

[0008] Furthermore, at least two stirring shafts are vertically arranged, and the stirring shafts are rotatably connected between the top wall of the tank and the filter baffle. The gear set includes a driving gear connected to the motor output shaft and a driven gear connected to the stirring shaft.

[0009] Furthermore, the transmission ratio between the driving gear and the driven gear is 1:3.

[0010] Furthermore, the stirring shaft has several stirring blades evenly distributed along the axial direction.

[0011] Furthermore, the anti-vortex layer is made of an acid and alkali resistant alloy.

[0012] Furthermore, the bottom of the tank is connected to a support via a support rod.

[0013] This utility model has at least the following advantages and beneficial effects:

[0014] (1) The tank is physically divided into the upper reaction zone and the lower sedimentation zone by the filter partition. The crystals naturally settle into the lower chamber, while the clear liquid remains in the upper chamber. This avoids the blockage of the discharge caused by the mixing of crystals in the traditional reactor, reduces the impurity content in the clear liquid, and improves the purity of the product.

[0015] (2) By arranging heating wires around the inner wall of the upper cavity and covering them with a ceramic layer and an anti-vortex layer, the heat generated by the heating wires is evenly transferred to the inner wall of the tank, avoiding local overheating or uneven heating. The anti-vortex layer forces the material flow direction to change, reducing the dead zone of stirring, making the temperature and concentration distribution more uniform, and avoiding local overheating that could lead to drug decomposition or crystallization. Attached Figure Description

[0016] Figure 1 The front view of a sedimentation-type mineral processing reagent synthesis reactor provided by this utility model.

[0017] Figure 2 A cross-sectional view of a sedimentation-type mineral processing reagent synthesis reactor provided by this utility model.

[0018] Figure 3 A top sectional view of a sedimentation-type mineral processing reagent synthesis reactor provided by this utility model.

[0019] Figure 4 A top sectional view of the upper cavity of a sedimentation-type mineral processing reagent synthesis reactor provided by this utility model.

[0020] Figure 5 A top-down cross-section of a curved, wavy anti-vortex layer in a sedimentation-type mineral processing reagent synthesis reactor provided by this utility model.

[0021] Figure 6 A top-down sectional view of a stepped, wavy anti-vortex layer in a sedimentation-type mineral processing reagent synthesis reactor provided by this utility model.

[0022] Figure 7 A top-down cross-section of a sawtooth-shaped wavy anti-vortex layer in a sedimentation-type mineral processing reagent synthesis reactor provided by this utility model.

[0023] Figure 8 A top sectional view of the anti-vortex layer in the form of a wavy line in a sedimentation-type mineral processing reagent synthesis reactor provided by this utility model.

[0024] Attached reference numerals: 1-Tank body, 10-Filter baffle, 11-Upper chamber, 12-Lower chamber, 13-Feeding port, 14-Discharge port, 15-Slag discharge port, 16-Filter screen, 17-Support rod, 18-Support, 2-Motor, 3-Agitator shaft, 31-Agitator blade, 4-Heating wire, 5-Heating box, 6-Ceramic layer, 7-Anti-vortex layer, 8-Gear set, 81-Driving gear, 82-Driven gear. Detailed Implementation

[0025] The specific implementation method is described below with reference to the accompanying drawings.

[0026] Example

[0027] like Figures 1 to 4As shown in this embodiment, a sedimentation-type mineral processing reagent synthesis reactor is disclosed, including a tank body 1. A motor 2 is installed at the top of the tank body 1, and the motor 2 is connected to a stirring shaft 3 via a gear set 8. The interior of the tank body 1 is divided into an upper chamber 11 and a lower chamber 12 by a filter baffle 10. The side wall of the tank body 1 is provided with a feed port 13 and a discharge port 14 communicating with the upper chamber 11. The bottom of the tank body 1 is provided with a slag discharge port 15 communicating with the lower chamber 12. Heating wires 4 are arranged circumferentially on the inner wall of the upper chamber 11. The tank body 1 is provided with a heating box 5 for heating the heating wires 4. The heating wires 4 are covered with a ceramic layer 6 and an anti-eddy current layer 7 in sequence. Specifically, the filter baffle 10 is made of the same material as the tank body 1 and welded to the tank body 1 as a whole. The filter baffle 10 has several filter holes with a pore size larger than the size of conventional crystal particles to ensure that the crystals can fall smoothly into the lower chamber. The filter baffle 10 has both filtering and rigid support functions. The filter baffle 10 physically divides the tank 1 into a reaction zone in the upper chamber 11 and a sedimentation zone in the lower chamber 12. Crystals naturally settle into the lower chamber 12, while the clear liquid remains in the upper chamber 11. This avoids the discharge blockage caused by mixed crystals in traditional reactors, reduces impurities in the clear liquid, and improves product purity. The heating wire 4 is vertically bent and coiled to be arranged circumferentially along the inner wall of the tank 1, covering the reaction zone in the upper chamber 11 to heat and insulate the material. The heating wire 4 is covered with a ceramic layer 6 and an anti-eddy current layer 7. The ceramic layer 6 evenly transfers the heat generated by the heating wire 4 to the inner wall of the tank 1, preventing localized overheating or uneven heating. In conjunction with the heating box 5, the temperature environment inside the tank 1 is controlled within the range of 40℃-60℃ (the temperature of the upper chamber 11 is monitored in real time via thermocouples, and feedback is sent to the heating box 5 to adjust the power), meeting the temperature requirements for the reaction and preventing low-temperature crystallization. Simultaneously, the ceramic layer 6 has high-temperature resistance and insulation properties, ensuring the heating wire operates safely in high-temperature environments and preventing short circuits or equipment damage. In traditional stirred tank reactors, the high-speed rotation of the agitator causes the material to move in a circular motion. Due to inertia and centrifugal force, the material accumulates towards the inner wall of the tank 1, forming annular vortices (i.e., "swirl"). This results in slow liquid flow in the central area of ​​the tank 1 and fast flow in the peripheral areas, creating localized "dead zones." Simultaneously, the vortices consume stirring energy, reducing stirring efficiency. By using the anti-vortex layer 7 to forcibly change the material flow direction, radial flow (circular motion) is transformed into axial flow (vertical flow) and turbulence, enhancing the mixing of liquids in different areas, reducing dead zones, and making the temperature and concentration distribution more uniform, thus preventing localized overheating that could lead to reagent decomposition or crystallization.

[0028] Furthermore, in specific implementation, such as Figures 5 to 8As shown, the anti-vortex layer 7 provided in this embodiment of the invention is cylindrical, and its outer wall is tightly fitted to the inner wall of the tank 1. The inner wall edge of the anti-vortex layer 7 is wavy. Specifically, the anti-vortex layer 7 is cylindrical and tightly fitted to the inner wall of the tank 1, forming a rigid support to prevent the anti-vortex layer 7 from shaking during stirring, while eliminating dead volume on the wall surface to ensure no fluid stagnation. The basic constituent unit shape of the wavy edge can be arc, triangle, trapezoid, or rectangle, corresponding to curved waves, sawtooth waves, stepped waves, and square waves, respectively. The wavy inner wall forces the circumferentially flowing liquid to undergo a sudden change in direction, converting radial kinetic energy into axial turbulent kinetic energy. According to the principles of fluid mechanics, the turbulence intensity can improve the mixing efficiency.

[0029] Furthermore, in a specific implementation, the discharge port 14 provided in this embodiment of the present invention is arranged flush with the filter baffle 10, and a filter screen 16 is connected to one end of the discharge port 14 inside the tank 1. Specifically, the discharge port 14 is flush with the filter baffle 10, and a threaded metal filter screen 16 is built in, allowing liquid to pass smoothly and trapping crystalline particles inside the tank 1.

[0030] Furthermore, in specific implementation, at least two stirring shafts 3 are vertically arranged in the above-mentioned embodiment of the present invention. The stirring shafts 3 are rotatably connected between the top wall of the tank 1 and the filter baffle 10. The gear set 8 includes a driving gear 81 connected to the output shaft of the motor 2 and a driven gear 82 connected to the stirring shafts 3. Specifically, the stirring shafts 3 are arranged symmetrically at the center, and the shaft spacing is 1 / 3 to 1 / 2 of the diameter of the tank 1 to ensure that there are no dead corners in the stirring area.

[0031] Furthermore, in a specific implementation, the transmission ratio of the driving gear 81 to the driven gear 82 provided in this embodiment of the present invention is 1:3. Specifically, for example, the motor 2 rotates at 150 r / min, and the driven gear 82 rotates at 450 r / min (one revolution of the driving gear 81 = three revolutions of the driven gear 82). The torque of the driven shaft is three times that of the driving shaft, which can overcome the resistance of high-viscosity fluids.

[0032] Furthermore, in a specific implementation, the stirring shaft 3 provided in this embodiment of the present invention has a plurality of stirring blades 31 evenly distributed along the axial direction. The stirring blades 31 are arranged in layers to eliminate dead zones in the stirring process.

[0033] Furthermore, in specific implementations, the anti-vortex layer 7 provided in this embodiment of the present invention is made of an acid and alkali resistant alloy. Specifically, the anti-vortex layer 7 can be made of 316L stainless steel or Hastelloy C-276, which is corrosion resistant.

[0034] Furthermore, in a specific implementation, the bottom of the tank 1 provided in this embodiment of the present invention is connected to a support 18 via a support rod 17. Specifically, the support rod 17 is made of seamless steel pipe, and three support rods 17 can be evenly distributed at 120° at the bottom of the tank 1, with the support 18 fastened to a stable plane.

Claims

1. A precipitated ore-dressing reagent synthesis reaction kettle, comprising a tank body (1), a motor (2) is arranged at the top end of the tank body (1), and a stirring shaft (3) is drivenly connected with the motor (2) through a gear set (8), characterized in that, The tank (1) is divided into an upper chamber (11) and a lower chamber (12) by a filter baffle (10). The side wall of the tank (1) is provided with a feeding port (13) and a discharge port (14) communicating with the upper chamber (11). The bottom of the tank (1) is provided with a slag discharge port (15) communicating with the lower chamber (12). The inner wall of the upper chamber (11) is circumferentially arranged with heating wires (4). The tank (1) is provided with a heating box (5) for heating the heating wires (4). The heating wires (4) are covered with a ceramic layer (6) and an anti-vortex layer (7) in sequence.

2. The synthesis reactor according to claim 1, characterized in that, The anti-vortex layer (7) is cylindrical, and the outer wall of the anti-vortex layer (7) is tightly attached to the inner wall of the tank (1). The edge of the inner wall of the anti-vortex layer (7) is wavy.

3. The synthesis reactor according to claim 1, characterized in that, The discharge port (14) is arranged flush with the filter baffle (10), and a filter screen (16) is connected to one end of the discharge port (14) inside the tank (1).

4. The synthesis reactor according to claim 1, characterized in that, At least two stirring shafts (3) are vertically arranged. The stirring shafts (3) are rotatably connected between the top wall of the tank (1) and the filter baffle (10). The gear set (8) includes a driving gear (81) connected to the output shaft of the motor (2) and a driven gear (82) connected to the stirring shaft (3).

5. The synthesis reactor according to claim 4, characterized in that, The transmission ratio between the driving gear (81) and the driven gear (82) is 1:

3.

6. The synthesis reactor according to claim 1, characterized in that, The stirring shaft (3) has several stirring blades (31) evenly distributed along the axial direction.

7. The synthesis reactor according to claim 1, characterized in that, The anti-vortex layer (7) is made of an acid and alkali resistant alloy.

8. The synthesis reactor according to claim 1, characterized in that, The bottom of the tank (1) is connected to a support (18) via a support rod (17).

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