Quartz sand flotation system and method

Abstract

The invention discloses a quartz sand flotation system and method. The quartz sand flotation system comprises a flotation tank, a cover body, a stirring part and a foaming part, the flotation tank comprises a tank body and a collecting hopper, the tank body is provided with a discharging port located in the upper side of the tank body, the collecting hopper is arranged around the periphery of the tank body, a collecting cavity is defined by the collecting hopper and the peripheral wall of the tank body, and the upper side of the collecting cavity is open to form a collecting port; the cover body is arranged on the upper sides of the flotation tank and the collection hopper, covers the discharge port and the collection port, and is provided with a flow guide port communicated with the discharge port and the collection port; the stirring part is arranged in the tank body and is used for stirring materials in the tank body; the foaming part is arranged in the pool body and used for generating bubbles in the pool body. According to the scheme, the target minerals can be gathered in the collection hopper, collection of the target minerals is achieved, the structure is simple and reliable, a blower is not needed for continuous blowing, and cost is saved. In addition, the cover body can prevent external impurities from entering the collecting hopper and the tank body, and the purity of foam products in the collecting hopper and materials subjected to flotation in the tank body is improved.

Description

Technical Field

[0001] The invention relates to the technical field of quartz sand flotation, and in particular to a quartz sand flotation system and method. Background Art

[0002] The flotation process can remove the associated impurity minerals in high-purity quartz sand. The impurity removal effect of this process can directly affect the quality of high-purity quartz sand and the impurity removal effect of subsequent purification tests. The most widely used flotation method in industry is froth flotation, which uses the difference in mineral surface properties to selectively attach mineral particles to bubbles and then float to the surface of the slurry to separate the target mineral from the gangue.

[0003] Publication No. CN104148192A discloses a high-purity quartz sand flotation machine, wherein the flotation cell is designed as a regular polygon, and is provided with a stirring device, a maximum water level line, a recess and a blower. While the stirrer is working, a gas flow controller injects gas into the flotation cell according to a certain proportion, and foam of the flotation agent in the cell is precipitated and rises with the air flow. The blower is used to blow the foam on the surface of the liquid from the recess into the waste liquid pool. The regular polyhedron flotation cell and the streamline patterns on the inner wall reduce the edges and corners of the quartz sand, improve the fusion degree of the quartz sand and the flotation agent, and thus improve the work efficiency.

[0004] However, the patent requires that the blower continuously blows air to blow the foam on the surface of the liquid from the recess into the waste liquid pool, which increases the cost. Summary of the invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies and propose a quartz sand flotation system method to solve the technical problem in the prior art that a blower needs to be continuously operated to blow air to blow the foam on the surface of the liquid from the recess into the waste liquid pool, thereby increasing the cost.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: In a first aspect, the present invention provides a quartz sand flotation system, comprising: A flotation tank, comprising a tank body and a collecting hopper, wherein the tank body has a discharge port located on the upper side thereof, the collecting hopper is arranged around the outer circumference of the tank body, and together with the peripheral wall of the tank body, a collecting cavity is formed, and the upper side of the collecting cavity is open to form a collecting port; A cover body, which is placed on the upper side of the flotation tank and the collecting hopper, covers the discharge port and the collecting port, and has a guide port connecting the discharge port and the collecting port; A stirring part, disposed in the tank body, for stirring the material in the tank body; and The foaming part is arranged in the pool body and is used for generating bubbles in the pool body.

[0007] In some embodiments, the cover body includes a main body plate and an extension plate, wherein the main body plate is spaced above the pool body, and the extension plate is arranged around the outer periphery of the main body plate and is inclined from one end close to the main body plate to one end away from the main body plate in a direction close to the collecting hopper, and the end away from the main body plate is placed on the collecting hopper; The guide port is formed between the main plate and the pool body.

[0008] In some embodiments, the collection port is flush with the discharge port.

[0009] In some embodiments, the collecting hopper has a discharge port, which is connected to the collecting cavity and is located on a side of the collecting cavity away from the pool body.

[0010] In some embodiments, the quartz sand flotation system further includes a microbubble generator and an air compressor, wherein the air outlet of the microbubble generator is located at the bottom of the pool body, the air compressor is located outside the pool body, and its air outlet is connected to the air inlet of the microbubble generator; Wherein, the gas outlet end of the micro-bubble generator constitutes the foaming part.

[0011] In some embodiments, the quartz sand flotation system further includes a stirring pipeline, one end of which is connected to the air outlet of the air compressor, and the other end of which is located at the bottom of the pool body and constitutes the stirring part.

[0012] In some embodiments, a first one-way valve is provided at one end of the stirring pipeline located in the cell body, and / or a second one-way valve is provided at the air outlet end of the microbubble generator.

[0013] In some embodiments, the quartz sand flotation system further includes a fresh air filter, and the fresh air filter is disposed at the air inlet of the air compressor.

[0014] In a second aspect, the present invention further provides a quartz sand flotation method, which is used in the quartz sand flotation system as described in any one of the above, and the quartz sand flotation method comprises the steps of: Obtaining a set value, an actual value, and a set fluctuation value of an indicator factor of a solution in the cell body; Calculating the absolute value of the difference between the set value and the actual value to obtain an actual fluctuation value, and comparing the set value with the actual value, and comparing the actual fluctuation value with the set fluctuation value; When the actual fluctuation value is smaller than the set fluctuation value, the feeding is stopped; and when the actual fluctuation value is larger than the set fluctuation value and the actual value is larger than the set value, the feeding is stopped.

[0015] In some embodiments, the step of obtaining the set value, actual value and set fluctuation value of the indicator factor of the solution in the pool body includes: Acquire the actual value every preset time period; and / or, The indicative factors include temperature, pH and concentration.

[0016] Compared with the prior art, in the quartz sand flotation system provided by the present invention, the material in the pool body is stirred by the stirring part to ensure the uniformity of the material, and at the same time, bubbles are generated by the foaming part to drive the target mineral to float up. After the target mineral floats to the top of the pool body following the bubbles, it is shielded by the cover body and will not overflow directly, and enters the collection cavity of the collection hopper through the diversion port and the collection port, so that the target mineral can be precipitated and gathered in the collection hopper, and the collection of the target mineral is realized. The structure is simple and reliable, and there is no need for a hair dryer to blow continuously, which saves costs. In addition, the cover body can isolate external debris from entering the collection hopper and the pool body, and improve the purity of the foam product in the collection hopper and the material after flotation in the pool body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of a quartz sand flotation system provided by an embodiment of the present invention; Figure 2 yes Figure 1 A perspective view of a medium quartz sand flotation system; Figure 3 yes Figure 1 Cross-section of a medium quartz sand flotation system; Figure 4 yes Figure 1 Schematic diagram of the working of the medium quartz sand flotation system; Figure 5 yes Figure 4 Schematic diagram of the micro bubble generator and air compressor.

[0018] Description of reference numerals: 1. Pool body; 1a. Discharge port; 11. pH adjustment pipe; 12. Water pipe; 13. Feed pipe; 14. Drain pipe; 15. Inspection pipe; 16. Ore discharge pipe; 2. Aggregate hopper; 2a. Aggregate cavity; 2b. Aggregate port; 2c. Discharge port; 3. Cover; 3a. Diversion port; 31. Main plate; 32. Extension plate; 4. Stirring section; 5. Foaming section; 6. Microbubble generator; 7. Air compressor; 8. Fresh air filter. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] In order to solve the technical problem in the prior art that a blower needs to be operated continuously to blow air so as to blow the foam on the surface of the liquid from the recess into the waste liquid pool, thereby increasing the cost, the present invention provides a quartz sand flotation system, which can deposit the target mineral in the collecting hopper and realize the collection of the target mineral. The system has a simple and reliable structure and does not require a blower to blow continuously, thereby saving costs.

[0021] See also Figures 1 to 4 , Figures 1 to 4 Schematic diagram of the structure of a quartz sand flotation system in an embodiment of the present invention, the quartz sand flotation system includes a flotation tank, a cover 3, a stirring part 4 and a foaming part 5; the flotation tank includes a tank body 1 and a collecting hopper 2, the tank body 1 has a discharge port 1a located on the upper side thereof, the collecting hopper 2 is arranged around the outer periphery of the tank body 1, and together with the peripheral wall of the tank body 1, a collecting cavity 2a is enclosed, and the upper side of the collecting cavity 2a is open to form a collecting port 2b; the cover 3 is placed on the upper side of the flotation tank and the collecting hopper 2, and covers the discharge port 1a and the collecting port 2b, and has a guide port 3a connecting the discharge port 1a and the collecting port 2b; the stirring part 4 is arranged in the tank body 1, and is used to stir the material in the tank body 1; the foaming part 5 is arranged in the tank body 1, and is used to generate bubbles in the tank body 1.

[0022] In the quartz sand flotation system provided by the present invention, the material in the pool body 1 is stirred by the stirring part 4 to ensure the uniformity of the material, and at the same time, bubbles are generated by the foaming part 5 to drive the target mineral to float up. After the target mineral floats to the top of the pool body 1 following the bubbles, it is blocked by the cover body 3 and will not overflow directly, and enters the collection cavity 2a of the collection hopper 2 through the guide port 3a and the collection port 2b, so that the target mineral is gathered in the collection hopper 2, and the collection of the target mineral is achieved. The structure is simple and reliable, and there is no need for a hair dryer to blow continuously, which saves costs. In addition, the cover body 3 can isolate external debris from entering the collection hopper 2 and the pool body 1, and improve the purity of the foam product in the collection hopper 2 and the material after flotation in the pool body 1.

[0023] It should be noted that the arrangement of the cover body 3 is not limited, as long as it can cover the aggregate opening 2b and the discharge opening 1a, and form a connecting passage between the aggregate opening 2b and the discharge opening 1a. In one embodiment, the cover body 3 is arranged in a three-section form, one part of which is arranged on the aggregate opening 2b, one part is arranged on the discharge opening 1a, and the other part forms a passage connecting the discharge opening 1a and the aggregate opening 2b. In another embodiment, the cover body 3 is provided with a cover plate with a connecting passage, which is directly arranged on the aggregate opening 2b and the discharge opening 1a.

[0024] In one embodiment, the cover body 3 includes a main plate 31 and an extension plate 32. The main plate 31 is spaced above the pool body 1, and the extension plate 32 is arranged around the outer periphery of the main plate 31, and is inclined from one end close to the main plate 31 to the end away from the main plate 31 along the direction close to the collecting hopper 2, and the end away from the main plate 31 is placed on the collecting hopper 2; the guide port 3a is formed between the main plate 31 and the pool body 1.

[0025] In this embodiment, the extension plate 32 is tilted from top to bottom in the direction close to the collecting hopper 2 to guide the bubbles on the top of the pool body 1 along the extension plate 32 into the collecting hopper 2, thereby accelerating the discharge speed, having a simple structure and low cost.

[0026] In one embodiment, the collecting opening 2b is flush with the discharging opening 1a.

[0027] In this embodiment, the collection port 2b is flush with the discharge port 1a, so that the target mineral can follow the bubbles to float to the top of the pool body 1 and then enter the collection hopper 2 through the diversion port 3a, thereby improving the discharge efficiency. It should be noted that in this solution, the flotation tank also includes a pH adjustment pipe 11, a water pipe 12, a feed pipe 13 and a surfactant feed pipe, one end of each of the above pipes is connected to the pool body 1, and the height of the other end is not lower than the height of the discharge port 1a. Among them, the pH adjustment pipe 11 is used for acid and alkali delivery, and the pH adjustment pipe 11, the water pipe 12 and the surfactant feed pipe are integrated in the feed pipe 13. In addition, the flotation tank also includes a drain pipe 14 and an inspection pipe 15, the drain pipe 14 is connected to the middle of the pool body 1, and the inspection pipe 15 is connected to the bottom of the pool body 1.

[0028] In one embodiment, the collecting hopper 2 has a discharge port 2c, which is connected to the collecting cavity 2a and is located on a side of the collecting cavity 2a away from the tank body 1.

[0029] In this embodiment, a discharge port 2c is provided on the hopper 2, so that the target mineral in the hopper 2 can be extracted through the discharge port 2c, thereby improving convenience. It should be noted that in this solution, the hopper 2, the cover 3 and the tank body 1 are all coated with an anti-corrosion layer, and the whole body of the equipment is arranged with anti-corrosion and wear-resistant materials to avoid the introduction of impurities and improve the service life of the equipment.

[0030] In one embodiment, see Figure 4 and Figure 5 The quartz sand flotation system also includes a microbubble generator 6 and an air compressor 7. The air outlet of the microbubble generator 6 is located at the bottom of the pool body 1. The air compressor 7 is located outside the pool body 1, and its air outlet is connected to the air inlet of the microbubble generator 6; wherein the air outlet of the microbubble generator 6 constitutes a foaming part 5.

[0031] In this embodiment, high-pressure gas is delivered to the pool body 1 via the air compressor 7 through the micro-bubble generator 6 to continuously generate bubbles. Specifically, the micro-bubble generator 6 can stably inject high-pressure gas into the liquid at a small flow rate. During the injection process, the gas molecules collide and diffuse with the liquid molecules to form initial bubble nuclei. As the gas is continuously injected, these bubble nuclei will gradually grow to form tiny bubbles.

[0032] In this solution, the micro-nano bubble generator can also be equipped with an efficient mixing device, which can fully mix the gas and liquid to ensure that the bubbles are evenly distributed in the liquid, and the bubble stability and activity are enhanced while also increasing the probability of contact between the bubbles and the minerals in the slurry, thereby improving the flotation efficiency. It should be noted that the specific structure and principle of the micro-bubble generator 6 and the efficient mixing device are prior art and will not be described in detail here. In addition, the flotation cell also includes an outlet pipe 16, one end of which is connected to the bottom of the cell body 1, and passes through the micro-bubble generator 6 and the air compressor 7, and is provided with an electric / pneumatic valve.

[0033] In one embodiment, the quartz sand flotation system further includes a stirring pipeline, one end of which is connected to the air outlet of the air compressor 7 , and the other end of which is located at the bottom of the pool body 1 and constitutes a stirring part 4 .

[0034] In this embodiment, high-pressure gas is simultaneously delivered to the stirring pipeline by the air compressor 7 to stir the solution in the tank body 1. The air flow is used to drive the slurry stirring, and the speed intensity is determined by the amount of gas charged. There is no need for impeller stirring, which can avoid the wear of the impeller on the mineral particles, and the brittle minerals are not easy to produce mud, thus solving the adverse effects of the gas-charged stirring equipment on the purification of high-purity quartz sand. In addition, the air compressor 7 can be placed at the bottom of the outer side of the tank body 1, and the rust components of the main body of the air compressor 7 will not fall into the tank body 1, and the product quality will not be affected by the rust of the equipment.

[0035] In one embodiment, a first one-way valve is provided at one end of the stirring pipeline located in the tank body 1, and / or a second one-way valve is provided at the air outlet end of the micro-bubble generator 6.

[0036] In this embodiment, a one-way valve is provided in the part where the stirring pipeline and the microbubble generator 6 are located in the pool body 1, so that high-pressure gas can enter the pool body 1, while the fluid in the pool body 1 cannot flow back into the stirring pipeline and the microbubble generator 6. The air can be inflated upward by the negative pressure of the air compressor 7, and the problem of calcium accumulation in the inflator will not occur.

[0037] In one embodiment, the quartz sand flotation system further includes a fresh air filter 8 , which is disposed at the air inlet of the air compressor 7 .

[0038] In this embodiment, a fresh air filter 8 is provided at the air inlet of the air compressor 7. When adjusting the slurry, the controller needs to control the opening of the fresh air filter 8 to ensure that the air entering the pool body 1 is clean air and to avoid the introduction of impurities during the inflation process. The opening time of the fresh air filter 8 is the system opening time, and the closing time is the system closing time. It should be understood that the specific structure and principle of the fresh air filter 8 are prior art and will not be elaborated here.

[0039] It should be noted that, in order to facilitate feeding, the quartz sand flotation system in this scheme also includes a pH adjustment device, an automatic feeding device and a system control device, wherein: The pH adjusting device comprises a pH detector and an adjuster, the pH adjuster comprises an acid adding device and an alkali adding device, and the pH detector and the adjuster are connected with the system control device.

[0040] The automatic feeding device includes an automatic feeding unit, an automatic discharging unit, an automatic dosing unit and an automatic water supply unit, which are electrically connected through a system control device to work together to achieve automatic feeding and water supply. The specific structure and principle of the above components are prior art and will not be elaborated here.

[0041] In addition, the present invention also provides a quartz sand flotation method, which is used in the quartz sand flotation system as described above. The first embodiment of the quartz sand flotation method comprises the steps of: Obtaining the set value, actual value and set fluctuation value of the indicator factor of the solution in the cell body 1; Calculate the absolute value of the difference between the set value and the actual value to obtain the actual fluctuation value, and compare the set value with the actual value, and compare the actual fluctuation value with the set fluctuation value; When the actual fluctuation value is less than the set fluctuation value, the feeding is stopped; and when the actual fluctuation value is greater than the set fluctuation value, the feeding is stopped when the actual value is greater than the set value.

[0042] In this embodiment, the set value and the actual value of the indicator factor, the actual fluctuation value and the set fluctuation value are compared at the same time to track the indicator factor of the solution in the cell body 1 in real time. Specifically, when the actual fluctuation value is less than the set fluctuation value, the feeding is stopped, and when the actual fluctuation value is greater than the set fluctuation value, and the actual value is greater than the set value, the feeding is stopped to improve the accuracy. At the same time, when the actual fluctuation value is greater than the set fluctuation value, and the actual value is less than the set value, the feeding is started.

[0043] In addition, the present solution also provides a second embodiment of the quartz sand flotation method. In the second embodiment, the step of obtaining the set value, actual value and set fluctuation value of the indicator factor of the solution in the tank body 1 includes: Obtaining actual values ​​at predetermined time intervals; and / or, Indicative factors include temperature, pH and concentration.

[0044] In this embodiment, the indicator parameters include temperature, pH and concentration. That is, the parameter setting includes the setting of temperature, pH and concentration parameters, and the controller sets the set slurry concentration value C0 and the set concentration fluctuation value C1 of the solution; the set temperature value T0 and the set temperature fluctuation value T1; the set pH value P0 and the set pH fluctuation value P1.

[0045] The actual temperature value T2, the actual pH value P2, and the actual concentration value C2 in the device are collected by the temperature collector, and the collected data are transmitted to the controller.

[0046] The controller compares and judges the collected actual temperature value T2 with the set temperature value T0, the actual pH value P2 with the set pH value P0, and the actual concentration value C2 with the set concentration value C0, and controls the heater adjustment device to determine whether to increase / lower the temperature, increase / lower the pH, and feed the material based on the judgment result.

[0047] Specifically, the controller receives the actual concentration value C2 transmitted by the concentration meter every t1 seconds, and compares the actual concentration value C2 with the set concentration value C0 through the controller to obtain the actual concentration fluctuation value ΔC=C2-C0; the controller controls whether the vibrating feeder feeds by comparing the absolute value of the actual concentration fluctuation value ΔC with the set concentration fluctuation value C1; when the absolute value of the actual concentration fluctuation value ΔC is less than the set concentration fluctuation value C1, the controller controls the vibrating feeder to stop working; and when the absolute value of the actual concentration fluctuation value ΔC is greater than the set concentration fluctuation value C1, and the actual concentration value C2 is less than the set concentration value C0, the controller controls the vibrating feeder to start working; when the absolute value of the actual concentration fluctuation value ΔC is greater than the set concentration fluctuation value C1, and the actual concentration value C2 is greater than the set concentration value C0, the controller controls the vibrating feeder to stop working.

[0048] The controller receives the actual temperature value T2 transmitted by the temperature collector every t2 seconds, and compares the actual temperature value T2 with the set temperature value T0 through the controller to obtain the actual temperature fluctuation value ΔT=T2-T0; the absolute value of the actual temperature fluctuation value ΔT is compared with the set temperature value T1 to control whether the heater adjustment device starts working. When the absolute value of the actual temperature fluctuation value ΔT is less than the set temperature fluctuation value T1, the controller controls the heater to stop working; when the absolute value of the actual temperature fluctuation value ΔT is greater than the set temperature fluctuation value T1, and the actual temperature value T2 is less than the set temperature value T0, the controller controls the heater to start working; when the absolute value of the actual temperature fluctuation value ΔT is greater than the set temperature fluctuation value T1, and the actual temperature value T2 is greater than the set temperature value T0, the controller controls the heater to stop working.

[0049] The controller receives the actual pH value P2 transmitted by the pH collector every t3 seconds, and compares the actual pH value P2 with the set pH value P0 through the controller to obtain the actual pH fluctuation value ΔP=P2-P0; the controller controls whether the heater and the pH adjustment device start working through the result of comparing the absolute value of the actual pH fluctuation value with the set pH fluctuation value P1; when the absolute value of the actual pH fluctuation value ΔP is less than the set pH fluctuation value P1, the controller controls the pH adjustment device to stop working; when the absolute value of the actual pH fluctuation value ΔP is greater than the set pH fluctuation value P1, and the actual pH value P2 is less than the set pH value P0, the controller controls the pH adjustment device to start working; when the absolute value of the actual pH fluctuation value ΔP is greater than the set pH fluctuation value P1, and the actual pH value P2 is greater than the set pH value P0, the controller controls the pH adjustment device to stop working.

[0050] In order to better understand the present invention, the following Figures 1 to 4 The technical solution of the present invention is described in detail: Based on the above embodiment, the quartz sand flotation system provided by this solution includes four processes: feeding, slurry control, flotation and discharging. The specific working process is as follows: The feeding process includes the following steps: Step 1, opening the feeding valve, and opening the feeding valve by controlling the controller; Step 2, adding materials, the controller controls the feeding gourd to add a certain amount of raw materials to be selected into the tank body; Step 3, closing the feeding valve. After the feeding is completed, the controller controls the feeding valve to close the feeding valve; The slurry conditioning process includes the following steps: Step 4, parameter setting: including the setting of temperature, pH, and concentration parameters, through the controller setting the solution's set slurry concentration value C0 and set concentration fluctuation value C1; set temperature value T0 and set temperature fluctuation value T1; set pH value P0 and set pH fluctuation value P1; Step 5, data collection: collect the actual temperature value T2, the actual pH value P2, and the actual concentration value C2 in the system through the temperature collector, and transmit the collected data to the controller; Step 6, data processing: The controller compares and judges the collected actual temperature value T2 with the set temperature value T0, the actual pH value P2 with the set pH value P0, and the actual concentration value C2 with the set concentration value C0, and controls the heater adjustment device to determine whether to increase / decrease the temperature, whether to increase / decrease the pH, and whether to feed according to the determination result. For the specific comparison process, refer to the second embodiment of the quartz sand flotation method described above.

[0051] The flotation process includes the following steps: Step 7, adding medicine, the controller controls the automatic dosing device, the dosing amount needs to be set, and the medicine is added to the tank body according to the set parameters, accompanied by the rotation of the airflow in the tank; the inflation process specifically includes: Step 7.1, turn on the fresh air filter 8. When adjusting the slurry, the controller needs to control the fresh air filter 8 to open to ensure that the air entering the pool body 1 is clean air and to avoid the introduction of impurities during the inflation process. The opening time is the equipment opening time, and the closing time is the equipment closing time; Step 7.2, open the first one-way valve, and control the first one-way valve at the bottom of the pool body 1 to open through the controller, and the opening and closing time of the first one-way valve is consistent with the fresh air filter 8; Step 8, the microbubble generator 6 is inflated. After sufficient diffusion for a period of time, the controller controls the microbubble generator 6 to start inflating, and stable microbubbles are generated in the pool body 1, which carry impurities and float to the surface of the slurry, and then are transported to the foam product collection tank; Step 9, collect the foam product, the microbubbles carrying impurities will flow into the collecting hopper 2 by themselves, and the controller controls the electric pump to extract the material in the collecting hopper 2 from the discharge port 2c, and no visible impurities are found in the extracted material; Step 10, turning off the microbubble generator 6, and when the operation is finished, the controller turns off the microbubble generator 6 for inflation; The nesting process includes the following steps: Step 11, setting the operation end time t4 through the controller; obtaining the actual operation time t5 through the controller detection, and controlling the electric / pneumatic valve on the ore outlet pipe 16 to remain closed or open through comparison; when the actual operation time t5 is less than the set operation time t4, the controller controls the electric / pneumatic valve on the ore outlet pipe 16 to close, and the ore is not discharged; when the actual time t5 is equal to the set time t4, the controller controls the electric / pneumatic valve on the ore outlet pipe 16 to open, and the ore is discharged; Step 12, obtaining the actual opening duration t6 and the set opening duration t7 of the electric / pneumatic valve on the ore outlet pipe 16 through the controller, comparing the two, and then controlling the electric / pneumatic valve on the ore outlet pipe 16 to remain open or closed; when the actual opening duration t6 of the electric / pneumatic valve on the ore outlet pipe 16 is less than the set opening duration t7, the controller controls the electric / pneumatic valve on the ore outlet pipe 16 to remain in the open state and continue to discharge ore; when the actual opening duration t6 of the electric / pneumatic valve on the ore outlet pipe 16 is equal to the set opening duration t7, the controller controls the electric / pneumatic valve on the ore outlet pipe 16 to close, ending the ore discharge.

[0052] It should be understood that the above-mentioned setting times are set according to actual needs and will not be elaborated here.

[0053] It should be noted that in Example 1, the flotation operation using the quartz sand flotation system in this scheme is carried out in the following steps: Step 1, feeding: adding quartz sand samples with a particle size of 60-160 mesh and after three-stage magnetic separation at an intensity of 1.7T into the pool; Step 2, slurry adjustment: slurry temperature 40°C, slurry pH = 2-3, slurry concentration 30%; set stirring time 10min, speed 1800r / min; Step 3, open the fresh air filter and the first one-way valve to allow the slurry to rotate in the tank along with the airflow; Step 4: Turn on the microbubble generator to inflate the air to 1m 3 / min; Step 5, collect the foam product, and after three stages of selection, the final product in the pool is the final quartz flotation product; Step 6: Collect the product and conduct ICP (inductively coupled plasma) testing.

[0054] In Example 2, a conventional mechanical stirring flotation machine is used for flotation operation, and the steps are as follows: Step 1, feeding: adding the same mineral as in Case 1 into the flotation tank; Step 2, slurry adjustment: slurry temperature 40°C, slurry pH = 2-3, slurry concentration 35%; set stirring time 10min, speed 1800r / min; Step 3, add surfactant A and set the stirring time to 10min; Step 4, open the inflation valve and inflate to 1m 3 / min; Step 5, collect the foam product, and after three stages of selection, the product in the final flotation tank is the final quartz flotation product; Step 6: Collect the product and conduct ICP test.

[0055] Table 1 shows the ICP test results of the flotation products of this solution and the traditional mechanical agitation flotation machine. From the data in the table, it can be seen that the SiO2 content of the flotation quartz sand product obtained by using the flotation equipment that can be replaced by the same principle of the present invention is 99.9984%. The SiO2 content of the flotation quartz sand product obtained by using the traditional mechanical agitation flotation equipment is 99.9720%. By comparison, it can be confirmed that the flotation equipment and method provided by the present invention can improve the flotation efficiency of quartz sand and improve the quality of the flotation products of quartz sand.

[0056] Table 1 ICP test results of implementation cases (μg / g)

[0057] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A quartz sand flotation system, characterized in that: include: A flotation tank, comprising a tank body and a collecting hopper, wherein the tank body has a discharge port located on the upper side thereof, the collecting hopper is arranged around the outer circumference of the tank body, and together with the peripheral wall of the tank body, a collecting cavity is formed, and the upper side of the collecting cavity is open to form a collecting port; A cover body, covering the discharge port and the material collection port, and having a guide port connecting the discharge port and the material collection port; A stirring part, disposed in the tank body, for stirring the material in the tank body; and The foaming part is arranged in the pool body and is used for generating bubbles in the pool body.

2. The quartz sand flotation system according to claim 1, characterized in that: The cover body includes a main body plate and an extension plate, wherein the main body plate is spaced apart above the pool body, and the extension plate is arranged around the outer periphery of the main body plate and is inclined from one end close to the main body plate to one end away from the main body plate in a direction close to the collecting hopper, and the end away from the main body plate is placed on the collecting hopper; The guide port is formed between the main plate and the pool body.

3. The quartz sand flotation system according to claim 1, characterized in that: The material collection port is flush with the material discharge port.

4. The quartz sand flotation system according to claim 1, characterized in that: The material collecting hopper has a discharge port, which is connected to the material collecting cavity and is located at a side of the material collecting cavity away from the tank body.

5. The quartz sand flotation system according to claim 1, characterized in that: The quartz sand flotation system also includes a microbubble generator and an air compressor, wherein the air outlet of the microbubble generator is located at the bottom of the pool body, and the air compressor is located outside the pool body, and its air outlet is connected to the air inlet of the microbubble generator; Wherein, the gas outlet end of the micro-bubble generator constitutes the foaming part.

6. The quartz sand flotation system according to claim 5, characterized in that: The quartz sand flotation system further comprises a stirring pipeline, one end of which is connected to the air outlet of the air compressor, and the other end of which is located at the bottom of the pool body and constitutes the stirring part.

7. The quartz sand flotation system according to claim 6, characterized in that: The stirring pipeline is provided with a first one-way valve at one end located in the pool body, and / or the air outlet end of the micro-bubble generator is provided with a second one-way valve.

8. The quartz sand flotation system according to claim 5, characterized in that: The quartz sand flotation system further comprises a fresh air filter, and the fresh air filter is arranged at the air inlet of the air compressor.

9. A quartz sand flotation method, used in the quartz sand flotation system according to any one of claims 1 to 8, characterized in that: The quartz sand flotation method comprises the steps of: Obtaining a set value, an actual value, and a set fluctuation value of an indicator factor of a solution in the cell body; Calculating the absolute value of the difference between the set value and the actual value to obtain an actual fluctuation value, and comparing the set value with the actual value, and comparing the actual fluctuation value with the set fluctuation value; When the actual fluctuation value is smaller than the set fluctuation value, the feeding is stopped; and when the actual fluctuation value is larger than the set fluctuation value and the actual value is larger than the set value, the feeding is stopped.

10. The quartz sand flotation method according to claim 9, characterized in that: The step of obtaining the set value, actual value and set fluctuation value of the indicator factor of the solution in the pool body includes: Acquire the actual value every preset time period; and / or, The indicative factors include temperature, pH and concentration.

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