Quartz sand purification method

Abstract

The invention relates to the technical field of quartz sand purification, and discloses a quartz sand purification method which comprises the following steps: S1, obliquely spraying out a first water flow from bottom to top through a water pump, enabling the first water flow to enter an inclined flow channel, forming a liquid stacking region at the top of the inclined flow channel, and forming a liquid bulging region on one side of the liquid level of the liquid stacking region, s2, the first target object falling through the step S1 enters second water flow which is the same as that in the step S1, the flow speed of the second water flow is v2, v2 is larger than v1, and the second target object is located in the first target object obtained in the step 1 through the step S2; the cleaning step is specially improved, so that the cleaning step has a sorting function, multiple surfaces of ore are randomly scoured by high-speed water flow, impurities in ore gaps are easier to remove under the action of water flow, and the impact force of the water flow is continuously improved, so that thin gaps on the surface of the ore are stripped, and gap fillers are removed; the problems that gap filler components are not detailed and cannot be completely removed through traditional cleaning are solved.

Description

Technical Field

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

[0002] The quartz sandstone ore body is white or light white, with fine-grained sand structure and medium-grained sand structure, and is blocky in structure. The rock itself contains sand-grade debris, gap fillings, opaque minerals, etc. The main component of the ore is quartz, but there are also a large number of clay minerals, tourmaline, and feldspar. The quartz is single crystal quartz with a particle size between 0.1mm-0.75mm, and the clay minerals are small scaly, with a diameter generally between 0.001mm-0.03mm.

[0003] At present, the commonly used purification processes are: cleaning, crushing, screening, flotation, magnetic separation, pickling, etc. Among them, the cleaning process can only clean the residual substances on the surface of the ore, and the gap fillers cannot be effectively removed. The above shows that the particle size of the gap fillers is very small and it is difficult to peel off without external force. However, the unpeeled gap fillers are mixed into the material after crushing, and the impurity composition of the gap fillers is complex. When entering the subsequent targeted removal treatment, it is difficult to accurately propose if the composition of the gap fillers is unknown. Summary of the invention

[0004] The object of the present invention is to provide a method for purifying quartz sand, by subjecting the cleaning step to a special improvement, utilizing the dual effects of water flow impact and gravity, so that the particle gravity overcomes the work done by the water flow and is simultaneously affected by the force to rotate, changing the inflation direction, so that the water flow impact force acts on the gap, and even under high flow rate conditions, the quartz sand is split, promoting the crack cleaning effect, and the cleaning step has a sorting function, and the cleaning is more comprehensive and efficient, properly solving the problem of crack fillers in the quartz sand, allowing the quartz sand to be removed during the flushing process, and simplifying the process, solving the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A quartz sand purification method comprising:

[0007] Step S1: a first water flow is sprayed obliquely from bottom to top by a water pump, the first water flow enters the inclined flow channel, and forms a liquid accumulation area at the top of the inclined flow channel, and forms a liquid drum area on one side of the liquid surface of the liquid accumulation area. The flow rate of the first water flow is v1, and the quartz sand ore raw material is put into the liquid accumulation area in a vertical form. The gravity of the target quartz sand ore overcomes the top lifting force of the water flow and descends along the inclined flow channel, and falls in the form of a parabola at the bottom outlet of the inclined flow channel. The floating dust and attached particles are in the liquid accumulation area, and are affected by the liquid drum area. The floating dust and particles are collected in the form of edge overflow;

[0008] Step S2: The first target object dropped through S1 enters the second water flow which is the same as step S1. The flow rate of the second water flow is v2, which is greater than v1. Through step S2, the heavier second target object and the first light target object are extracted from the first target object obtained in step 1, and the flow rate is increased one by one in the form of step S2, and the screening is performed multiple times. Under the high flow rate state, the thin layer of crack structure on the surface of the ore is peeled off, and multiple clean targets are obtained. The light target object contains light broken layer objects. At this time, the light target object is put into step S1 for a second round of cleaning and screening.

[0009] Step S3: After the required target object has been crushed and ground, it is sent into the magnetic separation plate, where multiple flow channels are formed through the magnetic ribs. The staggered magnetic ribs continuously divide the flow of the flow channel, so that the magnetic material adheres to the surface of the ribs to remove metal impurities;

[0010] Step S4: The treated material is subjected to multiple flotation processes to obtain the final target quartz sand.

[0011] Preferably, step S31: the magnetic separation plate has two grinding slurry injection ports and two separation slurry outlets, and the main inlet is arranged opposite to the separation slurry outlet.

[0012] Preferably, step S311: in the first stage, the grinding slurry enters through the top of the magnetic separation plate, is diverted to the bottom through the magnetic ribs, and is discharged through the lower separation slurry outlet, and undergoes multiple flotation treatments.

[0013] Preferably, step S312: in the second stage, the grinding slurry enters from the bottom of the magnetic separation plate, is diverted to the top through the magnetic ribs, and is discharged through the upper separation slurry outlet. At this time, the amount of adhered particles on the upper magnetic ribs and the lower magnetic ribs of the magnetic separation plate is the same.

[0014] Preferably, S32: close the pulp inlet pipeline, deliver the cleaning liquid from any direction, and remove the magnetism of the magnetic ribs, so that the metal particles enter the metal collection module under the action of the water flow.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The cleaning step is specially improved to have a sorting function. During the descent of the ore, due to the irregular volume of the ore itself, it is easy to cause force deviation. Therefore, some of the ore will change its angle during the descent. At this time, the high-speed water flow randomly washes the multiple surfaces of the ore. Under the action of the water flow, the impurities in the ore gaps are also easier to remove. The small particles of impurities or the cracked areas around the ore are broken to form small pieces of material under the influence of the water flow and enter the upper part for sorting. The qualified ore falls through the lower end of the inclined flow channel, and the water flow rate is continuously increased, thereby increasing the impact force on the ore. The target size ore is obtained by multiple screening through the flow rate. Since large ores have more cracks, most of the cracks remain on the surface of the ore. Due to the large surface area of ​​large ores, multiple thin layers and gaps will be formed on the surface of the ore. Therefore, the impact force of the water flow is continuously increased to peel off the thin layer gaps on the surface of the ore, thereby removing the gap filler. Solve the problem that the composition of the gap filler is unknown, traditional cleaning cannot completely remove it, and subsequent targeted treatment cannot completely remove it. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A schematic diagram of a quartz sand purification method;

[0019] Figure 2 This is a diagram of the thin layer and crack structure of the fracture surface of quartz ore. DETAILED DESCRIPTION

[0020] See also Figure 1-2 , this embodiment includes: step S1: a first water flow is sprayed obliquely from bottom to top by a water pump, the first water flow enters the inclined flow channel, and forms a liquid accumulation area at the top of the inclined flow channel, and forms a liquid drum area on one side of the liquid surface of the liquid accumulation area. The flow rate of the first water flow is v1, and the quartz sand ore raw material is put into the liquid accumulation area in a vertical form. The gravity of the target quartz sand ore overcomes the top lifting force of the water flow and descends along the inclined flow channel, and falls in the form of a parabola at the bottom outlet of the inclined flow channel. The floating dust and attached particles are in the liquid accumulation area, and are affected by the liquid drum area. The floating dust and particles are collected in the form of edge overflow.

[0021] In this embodiment, the cleaning step is specially improved so that the cleaning step has a sorting function, and the cleaning is more comprehensive and efficient, which properly solves the problem of crack filling in the quartz sand, allows the quartz sand to be removed during the flushing process, and simplifies the process.

[0022] In this embodiment: Please refer to Figure 1 In step S1, a high-speed clean water flow from bottom to top is first set, and the high-speed clean water flow is transported by a water pump, and an inclined flow channel is set at the outlet of the water pump. The inclined flow channel is a structure with open ends, and there is a distance between the inlet of the clean flow channel and the water pump nozzle. The high-speed water flow overcomes gravity and rushes into the inclined flow channel. A vertical funnel is set on the top of the inclined flow channel. The impact height of the water flow is lower than the edge of the funnel. At this time, the liquid will accumulate in the funnel to produce effusion, and the corresponding position of the funnel surface liquid level and the inclined flow channel will produce a drum liquid area under the influence of the kinetic energy of the water. In the first step, the backwash water flow velocity is low, and the quartz sand ore is put into the funnel in an orderly manner. The small particles, micro-particle impurities and small mass materials such as floating dust attached to the surface of the quartz sand ore are light in weight and their own gravity cannot resist the rising kinetic energy provided by the water flow, so they float to the top with the action of the water flow and under the action of the drum liquid area. At the same time, the water continues to rise, and the edge of the funnel overflows to one side, so that the useless impurities are extracted in the first step. The complete target ore has a large mass. At this time, it overcomes gravity and slowly descends along the inclined flow channel to overcome the gravity of the water flow. During the descent of the ore, due to the irregular volume of the ore itself, it is easy to cause force deviation. Therefore, some of the ore will change its angle during the descent. At this time, the high-speed water flow randomly washes the multiple sides of the ore. Under the action of the water flow, the impurities in the ore gaps are also easier to remove. The small particles of impurities after removal or the cracked areas around the ore are broken to form small pieces of material under the influence of the water flow and enter the upper part for sorting. Qualified ore falls through the lower end of the inclined flow channel. Under the action of gravity, since there is a gap between the inclined flow channel and the water pump, when the ore is separated from the lower end of the inclined flow channel, it descends parabolically under the action of gravity, which will not affect the water pump body, and subsequent operations are carried out at the same time. After this process, the ore cleaning is more efficient and the separation effect of the crack filler is better.

[0023] In this embodiment: Step S2: The first target object falling through S1 enters the second water flow same as step S1, the flow rate of the second water flow is v2, v2 is greater than v1, and the heavier second target object and the first light target object are extracted from the first target object obtained in step 1 through step S2, and the flow rate is increased one by one in the form of step S2, and screened multiple times, and under the high flow rate state, the thin layer of crack structure on the surface of the ore is peeled off, and multiple clean targets are obtained, and the light target contains light broken layer objects. At this time, the light target object is put into step S1 for a second round of cleaning and screening.

[0024] In this embodiment: for further sorting, the water flow rate is continuously increased to increase the impact force on the ore, and the target size ore is obtained through multiple screening by flow rate. Since large ore has more cracks, most of the cracks remain on the surface of the ore. Since large ore has a large surface area, multiple thin layers and gaps will be formed on the surface of the ore. Therefore, the water flow impact force is continuously increased to peel off the thin layer gaps on the surface of the ore, thereby removing the gap fillers. At this time, a large number of falling clean targets are obtained, and the split impurities contained in the obtained light targets can be put into step S1 for secondary impurity removal and cleaning to improve the purity and sorting.

[0025] In this embodiment: Step S3: After the required target object has been crushed and ground, it is sent into the magnetic separation plate, and multiple flow channels are formed through the magnetic ribs. The staggered magnetic ribs continuously divide the water flow in the flow channel, so that the magnetic material adheres to the surface of the ribs to remove metal impurities.

[0026] In this embodiment: after the processed quartz ore is crushed and ground, it enters the magnetic separation plate, which has a plurality of magnetic ribs, which are staggered up and down, and a flow channel is formed between two ribs, and the subsequent ribs are located in the middle of the previous flow channel. At this time, the liquid is continuously diverted under the action of the ribs, reducing the width of the flow channel, and the metal material is adhered under the magnetic force of the magnetic ribs.

[0027] In this embodiment: Step S4: The treated material is subjected to multiple flotation to obtain the final target quartz sand.

[0028] In this embodiment: Step S31: The magnetic separation plate has two grinding slurry injection ports and two separation slurry outlets, and the main inlet and the separation slurry outlet are arranged opposite to each other, Step S311: In the first stage, the grinding slurry enters through the top of the magnetic separation plate, is diverted to the bottom through the magnetic ribs, and is discharged through the lower separation slurry outlet, and multiple flotation treatments are performed, Step S312: In the second stage, the grinding slurry enters through the bottom of the magnetic separation plate, is diverted to the top through the magnetic ribs, and is discharged through the upper separation slurry outlet. At this time, the amount of adhered particles on the upper magnetic ribs and the lower magnetic ribs of the magnetic separation plate are the same.

[0029] In this embodiment: Since a large amount of metal particles adhere to the magnetic ribs near the inlet end, the magnetic ribs need to be recoiled after a period of use to collect magnetic metal substances, such as iron. Therefore, the magnetic separation is divided into two stages, and a switching method of top-in and bottom-out and bottom-in and top-out is adopted to put the magnetic ribs in a fully loaded adsorption state for subsequent recoil.

[0030] In this embodiment: S32: close the pulp inlet pipe, deliver cleaning liquid from any direction, and remove the magnetism of the magnetic ribs. Under the action of water flow, metal particles enter the metal collection module.

[0031] What has been described above are only preferred specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, can make equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for purifying quartz sand, characterized in that: include: Step S1: a first water flow is sprayed obliquely from bottom to top by a water pump, the first water flow enters the inclined flow channel, and forms a liquid accumulation area at the top of the inclined flow channel, and forms a liquid drum area on one side of the liquid surface of the liquid accumulation area. The flow rate of the first water flow is v1, and the quartz sand ore raw material is put into the liquid accumulation area in a vertical form. The gravity of the target quartz sand ore overcomes the top lifting force of the water flow and descends along the inclined flow channel, and falls in the form of a parabola at the bottom outlet of the inclined flow channel. The floating dust and attached particles are in the liquid accumulation area, and are affected by the liquid drum area. The floating dust and particles are collected in the form of edge overflow; Step S2: The first target object dropped through S1 enters the second water flow which is the same as step S1. The flow rate of the second water flow is v2, which is greater than v1. Through step S2, the heavier second target object and the first light target object are extracted from the first target object obtained in step 1, and the flow rate is increased one by one in the form of step S2, and the screening is performed multiple times. Under the high flow rate state, the thin layer of crack structure on the surface of the ore is peeled off, and multiple clean targets are obtained. The light target object contains light broken layer objects. At this time, the light target object is put into step S1 for a second round of cleaning and screening. Step S3: After the required target object has been crushed and ground, it is sent into the magnetic separation plate, where multiple flow channels are formed through the magnetic ribs. The staggered magnetic ribs continuously divide the water flow in the flow channel, so that the magnetic material adheres to the surface of the ribs to remove metal impurities; Step S4: The treated material is subjected to multiple flotation or pickling treatments to obtain the final target quartz sand.

2. A quartz sand purification method according to claim 1, characterized in that: Step S31: The magnetic separation plate has two grinding slurry injection ports and two separation slurry outlets, and the main inlet is arranged opposite to the separation slurry outlet.

3. A quartz sand purification method according to claim 2, characterized in that: Step S311: In the first stage, the grinding slurry enters through the top of the magnetic separation plate, is diverted to the bottom through the magnetic ribs, and is discharged through the bottom separation slurry outlet for multiple flotation treatments or pickling treatments.

4. A quartz sand purification method according to claim 2, characterized in that: Step S312: In the second stage, the grinding slurry enters from the bottom of the magnetic separation plate, is diverted to the top through the magnetic ribs, and is discharged through the upper separation slurry outlet. At this time, the amount of adhered particles on the upper magnetic ribs and the lower magnetic ribs of the magnetic separation plate is the same.

5. A quartz sand purification method according to claim 1, characterized in that: S32: Close the pulp inlet pipeline, deliver the cleaning liquid from any direction, and remove the magnetism of the magnetic ribs. Under the action of the water flow, the metal particles enter the metal collection module.

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