CN209612678U - A kind of pipeline static mixing mineralization device - Google Patents

Abstract

The utility model discloses a kind of pipeline static mixing mineralization devices, including tube body and it is set to intracorporal at least two mixed cell of the pipe, it is docked with spray gun described tube body one end, the other end is outlet end, the mixed cell includes parallel two rows or more and criss-cross batten, and the batten of each mixed cell is along the axial successively tilting and parallel interval setting of tube body, screw thread constrictor is additionally provided between adjacent two mixed cell in the tube body, the screw thread constrictor includes towards the sequentially connected contraction section of tube body export direction, flat segments and diffuser, the inner wall of the flat segments is equipped with axially extending screw thread.The utility model makes fluid that shearing occur, shunt, interflow, the movement such as rotation and deflecting using the mixed cells and screw thread constrictor of rule arrangements a large amount of in tube body, to realize being sufficiently mixed for fine-particle minerals and floating agent.

Description

A pipeline static mixing mineralization device

technical field

The utility model belongs to the technical field of flotation of mining equipment, in particular to a pipeline static mixing mineralization device.

Background technique

In mineral sorting, the flotation recovery of fine-grained minerals has always been a difficult problem in the field of mineral processing. With the poor and fine hybridization of mineral resources, the proportion of fine-grained ore continues to increase. In addition, the grinding process produces a large amount of secondary fine mud while grinding the ore, which leads to fine particle size in the flotation process. Ore occupies a certain proportion. However, due to the small size of the fine-grained minerals, the probability of collision with the flotation reagents during the slurry mixing process is small, so that the flotation reagents cannot interact with the mineral particles well, resulting in the fine-grained minerals containing valuable metals. Adhering to air bubbles results in a large amount of loss in the tailings, resulting in a large loss of resources.

Enlarging the apparent particle size of particles is one of the main ways to achieve effective separation of fine-grained minerals. To increase the apparent particle size of the particles and realize the conventional flotation of fine-grained minerals, the main way is to make the fine-grained minerals selectively hydrophobized under the premise that the pulp is fully dispersed to form agglomerates, and then separate them by appropriate methods. The related processes are collectively referred to as "hydrophobic flocculation separation method", such as shear flocculation flotation and so on. The basic idea of shear flocculation theory is to add surfactants (collectors) to the fine particle suspension system, and then generate sufficient shear force through high-speed stirring, so that the microfine mineral hydration film adsorbed by surfactants is broken and Aggregate into clusters to increase their apparent diameter, and then use froth flotation to float the flocs out. In order to form a large enough shearing force, the traditional agitator needs a very high rotation speed when the stirring blade is running. However, the high rotation speed requires high energy consumption, and the wear on the equipment is also very serious. The static mixer is a pipeline mixer formed by fixing the static mixing elements in the pipeline in a certain arrangement. It has no moving parts inside and mainly uses fluid flow and internal units to achieve the mixing of various fluids. Compared with other equipment, the static mixer has the advantages of high efficiency, low energy consumption and small volume.

However, the design of the internal unit components of the mixer plays a crucial role in the effect of the mixer. Patent 201220559884.0 discloses a tubular static mixer. The mixing unit includes more than two parallel rows of criss-cross strips, 4- Twelve mixing units are arranged in the liquid mixing section of the pipe body, and the slats of each mixing unit are arranged obliquely and at intervals in parallel along the cross section of the pipe body. The static mixer of the above-mentioned patent is still not perfect, and the mixing, division and displacement of the fluid in the tube body are not sufficient, resulting in poor mixing effect, and cannot realize the full effect of the flotation agent and fine particle minerals.

Utility model content

This application aims to solve at least one of the technical problems existing in the prior art. For this reason, one of the purposes of this utility model is to provide a pipeline static mixing and mineralization device, which can utilize a large number of regularly arranged mixing units and thread shrinkers in the pipeline to realize the separation of fine grained minerals and floating minerals. The full mixing of selected agents has the advantages of uniform mixing, low energy consumption, and strong working stability.

In order to solve the above technical problems, the application adopts the following technical solutions:

A pipeline static mixing and mineralization device, comprising a pipe body and at least two mixing units arranged in the pipe body, one end of the pipe body is connected to a spray gun, and the other end is an outlet end, and the mixing units include two parallel rows The above and crisscross slats, and the slats of each mixing unit are arranged obliquely and parallelly spaced along the axial direction of the pipe body, and the pipe body is located between two adjacent mixing units. A threaded retractor is also provided. It is in the shape of a hollow tube body, and includes a constriction section, a straight section and a divergence section sequentially connected towards the outlet of the tube body, and the inner wall of the straight section is provided with axially extending threads.

Further, the threads of two adjacent thread retractors have opposite directions of rotation.

Further, the axis of the spray gun coincides with the axis of the pipe body.

Further, the length ratio of the contracted section, the straight section and the diffused section is 1:2:1.

Further, the longitudinal sections of the constricting section and the diffusing section are conical, with a cone angle of 90-100°.

Further, the ratio of the major diameter to the minor diameter of the straight section thread is 2:1.

Further, the horizontal angle between the slats of the mixing unit and the axis of the pipe body is 40-45°.

Compared with the prior art, the utility model has the following beneficial effects:

1. Using a large number of regularly arranged mixing units and threaded constrictors in the pipe body, the fluid can be sheared, split, merged, rotated and changed direction, so as to realize the full mixing of fine-grained minerals and flotation reagents.

2. Applicable to liquid-liquid, liquid-solid, liquid-gas mixing.

3. During the differentiation process, the droplets can be dispersed to 2-5um, and the unevenness coefficient sX≤5%.

4. It has the advantages of uniform mixing, no moving parts, low maintenance cost, low energy consumption, and strong working stability.

5. Can be used in series.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a structural schematic diagram of the utility model thread retractor;

Figure 3 is a schematic view of the utility model.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Referring to Fig. 1 and Fig. 2, a pipeline static mixing and mineralization device includes a pipe body 1, a spray gun 2, a mixing unit 3, a thread constrictor 4, and a flange 5. One end of the pipe body 1 is connected to the flange 5, and the pipe body 1 The other end of the spray gun 2 is connected to the other end of the spray gun 2, and the other end of the spray gun 2 is also connected to a flange. The specific structure of the mixing unit 3 is the same as that in the patent 201220559884.0, including more than two parallel rows of slats 31 criss-crossing, several mixing The units 3 are arranged in the pipe body 1 , and the slats 31 of each mixing unit 3 are arranged obliquely and parallel to each other along the axial direction of the pipe body. As for the specific number of mixing units, those skilled in the art can make adjustments according to actual mixing needs. The pipe body 1 is also provided with a threaded constrictor 4 between two adjacent mixing units. The threaded constrictor 4 is in the shape of a hollow pipe body and includes a constriction section 41, a straight section 42 and a The inner walls of the diffuser section 43 and the straight section 42 are provided with axially extending threads.

The working principle of the utility model is as follows: After the ore pulp is mixed with the flotation agent, it enters the spray gun 2 of the pipeline static mixing mineralization device through the pressure pump, and the ore pulp enters the pipe body 1 through the spray gun 2 at high speed, and the ore pulp passes through alternately arranged mixing units 3 and The thread constrictor 4 undergoes movements such as shearing, splitting, merging, rotating and changing directions, and is finally discharged from one end of the pipe body 1 . The liquid-liquid dispersion process in the pipeline static mixing mineralization device includes two behaviors: dispersive mixing and distributive mixing. Dispersive mixing is the process of droplet breakup and droplet aggregation and finally achieves dynamic equilibrium. The process of achieving an even distribution. Both processes develop continuously along the length of the pipe static mixing mineralization unit. In the constriction section 41 of the screw constrictor 4, due to the reduction of the cross-section of the pipe body, the pressure is gradually transformed into kinetic energy, and the flow velocity is accelerated. When the pulp passes through the straight section 42, the pulp will rotate along the thread, so that the pulp is fully mixed, and the rotating pulp The flow out of the threaded section enters the diffuser section 43. Due to the sudden increase in the cross-section of the diffuser section 43, the kinetic energy of the slurry is gradually converted into pressure energy, and then enters the next mixing unit. The spaced arrangement of the mixing unit 3 and the threaded constrictor 4 enables both the pulp and the flotation agent to be well dispersed, thereby achieving sufficient and uniform mixing of the ore pulp and the flotation agent.

Referring to Fig. 1 and Fig. 2, in order to further improve the mixing efficiency, the helical direction of two adjacent thread constrictors 4 is opposite, the axis of the spray gun 2 coincides with the axis of the pipe body 1, and the constriction section 41, the straight section 42 and the diffusion section The length ratio of 43 is 1:2:1, the longitudinal section of the constriction section 41 and the diffusion section 43 is conical, and the taper angle is 90-100°, and the ratio of the major diameter to the minor diameter of the straight section 42 is 2:1.

Referring to Figure 3, a method of using a pipeline static mixing mineralization device, the ore pulp 6 and the flotation agent 7 are mixed in the mixing tank 8, and then enter the pipeline static mixing mineralization device through the booster pump 9, and then the ore pulp is fully processed It is discharged from one end of the static mixing and mineralizing device of the pipeline, mixed again through the static mixing and mineralizing device of the pipeline in series, and finally the mixed pulp is discharged.

The utility model will be further described below in conjunction with specific application examples.

Application example 1

The test materials are taken from the semi-weathered sandstone tungsten ore of Hengyang Yuanjing Tungsten Industry Co., Ltd., and the tungsten ore has a finer particle size. After the ore is desulfurized, the pulp with a concentration of about 30% is used as the ore feed material for the experiment, and its WO ₃ grade is 0.31%. Add pH regulator sodium carbonate to the pulp to adjust the pH of the pulp to 8.0, then add inhibitor water glass, and then add fatty acid collector GYR. Fully mixing and slurrying of flotation reagents. The fully adjusted ore pulp enters the flotation machine for flotation, and the final tungsten rough concentrate is obtained through one rough, three fine and three sweeps. The amount of collector added relative to the original ore is 100g/t, the amount of inhibitor added relative to the original ore is 600g/t, the amount of pH regulator sodium carbonate added relative to the original ore is 500g/t, and the flotation temperature is 25°C. The crude concentrate WO ₃ grade was 5.82%, and the recovery rate was 55.56% (as shown in Table 1).

Table 1 Test results of pipeline static mixed mineralization device of Yuanjing Tungsten Mine

Application example 2

The test material is taken from Ninghuahang Luokeng Tungsten Mine Co., Ltd. The raw ore is graded by a cyclone to obtain a slurry of fine-grained tungsten ore with a particle size of -10um as the raw material for the experiment. The concentration is about 10%, and its WO ₃ grade is 0.14%. Add pH regulator sodium carbonate to the pulp to adjust the pH of the pulp to 9.0, then add activator lead nitrate, and then add collectors GYR and GYB. Fully mixed with flotation reagents for pulping. The fully adjusted ore pulp enters the flotation machine for flotation, and the final rough concentrate of tungsten is obtained through one rough, two fine and two sweeps. The amount of activator added to the original ore is 200g/t, the amount of collector added to the original ore is GYR 50g/t, GYB200g/t, the amount of pH regulator sodium carbonate added to the original ore is 600g/t, and the flotation temperature is 25 ℃. The crude concentrate WO ₃ grade obtained in the test was 3.16%, and the recovery rate was 52.39% (as shown in Table 2).

Table 2 Test results of pipeline static mixed mineralization device in Luokeng Tungsten Mine

Application example 3

The test material was taken from a cassiterite mine of Chenzhou Shizhuyuan Co., Ltd., and the particle size of the original ore tin intercalation cloth was extremely fine. After the raw ore is desulfurized, the pulp with a concentration of about 25% is used as the raw material for the experiment, and its SnO ₂ grade is 0.31%. Add pH adjuster sodium carbonate to the pulp to adjust the pH of the pulp to 9.0, then add activator lead nitrate, collector GYB, and foaming agent pine alcohol oil. The device fully mixes ore pulp and flotation reagents. The fully adjusted ore pulp enters the flotation machine for flotation, and after one rough, two fine and three sweeps, the final tin rough concentrate is obtained. The amount of activator lead nitrate relative to the raw ore is 250g/t, the amount of collector GYB relative to the raw ore is 300g/t, the foaming agent pine alcohol oil is 40g/t relative to the raw ore, and the pH regulator sodium carbonate is relatively The amount of raw ore added is 550g/t, and the flotation temperature is 25°C. The rough concentrate SnO ₂ grade obtained in the test is 3.58%, and the recovery rate is 60.92% (as shown in Table 3).

Table 3 Test results of pipeline static mixing mineralization device in Shizhuyuan Cassiterite Mine

The above-mentioned embodiments are only examples for clearly illustrating the present utility model, rather than limiting the implementation manner. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the embodiments here. And the obvious changes or changes derived therefrom are still within the protection scope of the present utility model.

Claims (6)

1. A pipeline static mixing mineralization device, comprising a pipe body and at least two mixing units arranged in the pipe body, one end of the pipe body is docked with a spray gun, and the other end is an outlet end, and the mixing unit includes parallel There are more than two rows of crisscross slats, and the slats of each mixing unit are arranged obliquely and parallel to each other along the axial direction of the pipe body. Constrictor, the threaded constrictor is in the shape of a hollow tubular body, including a constricted section, a straight section and a diffuser section connected in sequence towards the outlet of the tubular body, and the inner wall of the straight section is provided with axially extending threads . 2. The device according to claim 1, characterized in that the threads of two adjacent thread retractors have opposite directions of rotation. 3. The device according to claim 1, characterized in that: the axis of the spray gun coincides with the axis of the tube body. 4. The device according to claim 1, characterized in that the length ratio of the contracted section, the straight section and the diffused section is 1:2:1. 5. The device according to claim 1, characterized in that: the longitudinal section of the constricting section and the diffusing section is conical, and the cone angle thereof is 90-100°. 6 . The device according to claim 1 , wherein the ratio of the major diameter to the minor diameter of the straight section thread is 2:1.