CN115445758A - Titanium ore screening and sorting system in zircalite - Google Patents

Abstract

The invention relates to the technical field of titanium ore beneficiation, in particular to a screening and sorting system for titanium ore in zirconium-titanium ore, including impurity and dust removal system, mud removal system, wet separation system and dry separation system; preliminary filtration through impurity removal vibrating screen Impurities can be removed, and impurities in raw materials can be removed at the same time, and the precision of ore separation can be improved at one time. The wet magnetic separation process is combined with the dry magnetic separation process. The wet magnetic separation process uses whether the minerals are magnetic to achieve zirconium and titanium. The screening and separation of middle ore, and then the dry magnetic separation process utilizes the strength of different magnetic adsorption capabilities between minerals to realize the separation and screening of minerals in titanium. The screening and purification accuracy of various mineral materials such as ilmenite, rutile and iron concentrate during ore purification and separation; thus producing good economic benefits.

Description

A kind of screening and sorting system for titanium ore in zirconium-titanium ore

technical field

The invention relates to the technical field of titanium ore beneficiation, in particular to a screening and sorting system for titanium ore in zirconium-titanium ore.

Background technique

Titanium is an important strategic resource, which occupies an important position in strategic emerging industries such as aerospace, atomic energy industry, and precision casting industry; zirconium is a rare metal with amazing corrosion resistance, extremely high melting point, ultra-high The security of zirconium resources is of great significance to the development of my country's strategic emerging industries; at present, zircon is the most widely distributed and the largest reserves of zirconium minerals with industrial significance, and the titanium minerals are ilmenite, Rutile, etc.

Seaside mineral sand is a very important deposit in my country's mineral resources. Seashore placer deposits generally contain various minerals such as quartz sand, zircon, rutile, and ilmenite, collectively called zirconium-titanium ore, which is currently of industrial value. Zircon and ilmenite are important sources of zirconium minerals. According to the characteristics of each ore, magnetic separation is usually used for pretreatment and separation of ore sand. If the coarse screening effect is not good, it will cause a waste of mineral resources; As my country's zirconium-titanium resources are decreasing day by day and production costs are high, a small increase in ore precision in the sorting operation of sorting equipment will generate great economic benefits; therefore, it is important to strengthen the research on beneficiation technology for such zirconium-titanium resources. Theoretical significance and practical application value.

Contents of the invention

In order to solve the problems of the conventional zirconium-titanium screening process, the selection index is the highest, the cost is uneconomical and the waste of resources is caused, and the production of various mineral materials such as ilmenite, rutile and iron concentrate is further improved during the purification and separation of zirconium-titanium ore in seaside placer. Screening and purification accuracy; the invention provides a screening and sorting system for titanium ore in zirconium-titanium ore.

The technical problem of the present invention is achieved by the following technical solutions: a screening and sorting system for titanium ore in zirconium-titanium ore, including a slurry tank, a vibrating screen for removing impurities, a first wet magnetic separator, a filter, a feeding system, The first conveyor belt, rotary drying kiln, cooling kiln and dry magnetic separation unit; the outlet of the slurry tank is connected to the inlet of the impurity removal vibrating screen, and the impurity removal vibrating screen includes an ore pulp outlet; The pulp discharge port of the impurity-removing vibrating screen is connected to the feed port of the first wet magnetic separator; the first wet magnetic separator includes a titanium medium ore discharge port and a zirconium medium ore discharge port; the first wet magnetic separator The titanium medium ore discharge port of the separator is connected to the feed port of the filter; the discharge port of the filter is connected to the feeding system, and the discharge port of the feeding system is connected to the feed of the rotary drying kiln through the first conveyor belt. mouth; the discharge port of the rotary drying kiln is connected to the feed port of the cooling kiln; the discharge port of the cooling kiln is connected to the dry magnetic separation unit.

By using the above technical scheme, the separation process of zirconium-titanium includes preliminary filtration and impurity removal by vibrating screen for impurity removal, and at the same time, impurities in raw materials can be removed, and the precision of ore separation can be improved at one time. Wet magnetic separation technology and dry magnetic The wet magnetic separation process utilizes whether the minerals are magnetic to realize the screening and separation of zirconium and titanium ores, and then the dry magnetic separation process utilizes the strength of different magnetic adsorption capabilities between minerals to achieve mineral By optimizing the screening process, the beneficiation index is improved, and the screening and purification accuracy of ilmenite, rutile and iron concentrate and other mineral materials are improved during the purification and separation of zirconium-titanium ore in seaside placer; thus generating good economic benefits .

As a preference, the zirconium middling ore outlet of the first wet magnetic separator is connected with a second wet magnetic separator; the second wet magnetic separator includes a zirconium middling ore outlet and a titanium middling ore outlet; The titanium medium ore outlet of the second wet magnetic separator is connected with a filter.

By using the above technical scheme, the zirconium medium ore discharge port of the first wet magnetic separator will be mixed with some titanium medium ore minerals, and the zirconium medium ore mixed with titanium medium ore will be screened again by the second wet magnetic separator Separation, so as to further sieve and purify the titanium medium ore mineral material, and reduce the mixed and waste titanium medium ore mineral material.

As a preference, the dry magnetic separation unit includes a first dry magnetic separator and a second dry magnetic separator; the feed port of the first dry magnetic separator is connected to the discharge port of the cooling kiln; the The first dry magnetic separator includes an iron ore concentrate outlet, a titanium concentrate outlet and a mixing outlet; the mixing outlet of the first dry magnetic separator is connected to the second dry magnetic separator machine.

By using the above technical solutions, according to the difference in the magnetic adsorption capacity of mineral materials, the first dry-type magnetic separator is used to screen titanium medium ore, and to screen out iron concentrate, titanium concentrate and mixed mineral materials; at the same time, the second dry-type magnetic separator The magnetic separator is used to re-screen the mixed mineral materials, so as to specifically screen various mixed mineral materials and improve the beneficiation accuracy.

As a preference, a desilter system is also provided between the impurity removal vibrating screen and the first wet magnetic separator; the desilter system includes a desilter cyclone and a settling treatment system; The feed port is connected to the feed port of the desilter cyclone; the desilter cyclone includes a pulp discharge port and a mud discharge port; the pulp discharge port of the desilter cyclone is connected to the first wet magnetic separator feed port; the mud discharge port of the desilter cyclone is connected to the sedimentation treatment system.

Through the use of the above technical solutions, the desilter cyclone screens the slurry adsorbed on the surface of the pulp to initially improve the accuracy of ore dressing. The preliminary desilted pulp can greatly reduce the drying and screening process in the subsequent dry separation process. The amount of dust in the workshop, while improving the purity of the product after screening.

Preferably, the sedimentation treatment system includes a thickener and a plate filter press, the mud outlet of the desilter cyclone is connected to the feed port of the thickener, and the thickener includes a clear water port and an underflow port; the The underflow port of the thickener is connected with a plate filter press.

By using the above technical solutions, the thickener separates the mud and water separated from the mineral materials, the mud is recycled through the plate filter press, and the clean water is collected for reuse.

Preferably, a second conveyor belt is also included, and the discharge port of the feeding system is connected to the feed port of the cooling kiln through the second conveyor belt.

Through the above technical scheme, the second conveyor belt passes the wet mineral material from the feeding system over the rotary drying kiln and enters the feeding port of the cooling kiln, and the wet material conveyed by the first conveyor belt passes through the rotary drying kiln to form high-temperature dry mineral material; Finally, it is mixed with the wet mineral material at the feed inlet of the cooling kiln, so that the wet mineral material can be dried by using the residual temperature of the dry mineral material, which greatly reduces the consumption of the rotary drying kiln that uses natural gas as the drying energy. It saves a lot of energy consumption expenses, improves the processing technology, increases the processing capacity of the equipment, and reduces the cost input.

Preferably, a crushing vibrating screen is also arranged between the cooling kiln and the first dry magnetic separator.

By using the above technical scheme, before the dry separation and screening process, the ore produced in the cooling kiln is screened and finely sanded, and the solidified block is crushed to ensure the magnetic separation effect of the subsequent dry magnetic separation unit and improve the mineral processing. purity.

Preferably, a circulating water system is also included, and the circulating water system is respectively connected to the slurry tank and the first wet magnetic separator through pipelines.

Through the use of the above technical solutions, the circulating water system provides continuous water circulation for the entire screening and sorting system, effectively recycles water in the wet magnetic separation process stage, and reduces consumption.

Preferably, the first wet magnetic separator adopts a wet permanent magnet drum magnetic separator.

As a preference, the dry-type magnetic separation unit adopts a dry-type permanent magnetic drum magnetic separator, and the magnetic separation drum of the dry-type permanent magnetic drum magnetic separator is a carbon fiber drum.

By using the above technical solutions, the use of permanent magnet magnetic separator instead of electromagnetic magnetic separator can reduce the power consumption, and at the same time, the dry type permanent magnet magnetic separator of carbon fiber drum can be used to replace the traditional metal copper drum; The heating problem caused by the friction with the magnetic mineral material during the screening process ensures the screening effect.

In summary, the present invention has the following beneficial effects:

1. The zirconium-titanium ore screening and sorting system of the present invention, the separation process of zirconium-titanium includes preliminary filtration and impurity removal of impurity-removing vibrating sieves, and can remove impurities in raw materials at the same time, improving the ore separation accuracy at one time, The combination of wet magnetic separation process and dry magnetic separation process is adopted. The wet magnetic separation process uses whether the minerals are magnetic to realize the screening and separation of zirconium and titanium medium ores. After that, the dry magnetic separation process utilizes the differences between minerals. The strength of magnetic adsorption capacity is used to realize the separation and screening of minerals. By optimizing the screening process, the beneficiation index is improved, and the screening of various mineral materials such as ilmenite, rutile and iron concentrate is improved during the purification and separation of zirconium-titanium in seaside placer. Sub-purification precision; resulting in good economic benefits.

2. The screening and separation system of the present invention screens and separates the zirconium medium ore mineral material mixed with titanium medium ore by setting the second wet magnetic separator, thereby further screening and purifying the titanium medium ore mineral material, reducing the waste of mixing At the same time, according to the difference in the magnetic adsorption capacity of the ore, during the dry screening stage of the titanium medium ore, the first dry magnetic separator is used to screen the titanium medium ore, and to screen out the iron concentrate and titanium Concentrate and mixed mineral materials; at the same time, the second dry magnetic separator is used to screen the mixed mineral materials again, so as to carry out specific screening of various mixed mineral materials, and further improve the beneficiation precision layer by layer.

3. The screening and sorting system of the present invention is equipped with a desilting system, and the desilting cyclone screens the mud adsorbed on the surface of the pulp to initially improve the accuracy of ore dressing, and the preliminary desilted pulp is used in the subsequent dry separation process. , can greatly reduce the amount of dust in the workshop during the drying and screening process, and at the same time improve the purity of the product after screening.

4. The second conveyor belt added in the present invention sweeps the wet ore from the feeding system over the rotary drying kiln and enters the feed port of the cooling kiln, and the wet material conveyed by the first conveyor belt passes through the rotary drying kiln to form high-temperature dry ore Finally, it is mixed with the wet mineral material at the feed inlet of the cooling kiln, so that the wet mineral material can be dried by the residual temperature of the dry mineral material, which greatly reduces the cost of the rotary drying kiln that uses natural gas as the drying energy. The dosage saves a lot of energy consumption expenses, improves the processing technology, increases the processing capacity of the equipment, reduces the cost input, and produces huge economic benefits.

Description of drawings

Fig. 1 is the screening and sorting system figure of embodiment 1;

Fig. 2 is the mineral material screening sorting system figure of the present invention;

Figure 3 is a diagram of the screening and sorting system with the addition of a circulating water system.

Explanation of reference signs:

1. Pulp tank; 2. Impurity removal vibrating screen; 3. The first wet magnetic separator; 4. Filter; 5. Feeding system; 6. The first conveyor belt; 7. Rotary drying kiln; 8. Cooling kiln; 9. Dry magnetic separator; 91. First dry magnetic separator; 92. Second dry magnetic separator; 10. Second wet magnetic separator; 11. Desilter system; 111. Desilter cyclone ; 112, sedimentation treatment system; 1121, thickener; 1122, plate filter press; 12, the second conveyor belt; 13, crushing vibrating screen; 14, circulating water system.

detailed description

In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways than described here. Therefore, the present invention is not limited to the specific embodiments disclosed below. limit.

Embodiment 1: The present invention discloses a screening and sorting system for titanium ore in zirconium-titanium ore, as shown in FIG. , feeding system 5, first conveyor belt 6, rotary drying kiln 7, cooling kiln 8 and dry magnetic separation unit 9;

First of all, the stage of feeding zirconium-titanium sand slurry and removing impurities: in slurry tank 1, the zirconium-titanium ore raw material and water are slurryed according to a certain ratio, usually the ratio of zirconium-titanium ore sand raw material is 5%, and the ratio of water is 95% % is mixed in the slurry tank 1, the outlet of the slurry tank 1 is connected to the inlet of the impurity removal vibrating screen 2 through a pipeline, the zirconium-titanium ore sand slurry is powered by a pump, and the impurity removal vibrating screen 2 pairs zirconium titanium Impurities such as crushed stones and branches and leaves in the ore pulp are screened; the impurity removal vibrating screen 2 includes an ore pulp discharge port; The zirconium-titanium slurry after impurity removal and screening is transported to the first wet magnetic separator 3 for wet separation process.

Wet separation and dehydration process of zirconium-titanium ore: the first wet magnetic separator 3 adopts a wet permanent magnetic drum magnetic separator, the permanent magnetic magnetic separator does not consume power, saves energy, reduces cost input, and has a stable beneficiation effect; the first wet magnetic separator Separator 3 includes titanium medium ore discharge port and zirconium medium ore discharge port; after zirconium titanium ore slurry enters the first wet magnetic separator 3, zirconium medium ore and titanium medium ore will be screened out for the first time, titanium medium ore The ore is a magnetic mineral material, and the zirconium medium ore is a non-magnetic mineral material; the titanium medium ore screened out by the first wet magnetic separator 3 is screened out from the titanium medium ore discharge port, and then transported to the feed of the filter 4 The filter 4 dehydrates the titanium medium ore slurry screened out by the first wet magnetic separator 3 to form titanium medium ore with a water content of about 5%, so that it is transported by the conveyor belt from the discharge port of the filter 4 to the upper The material system 5 waits for the dry selection process.

Dry separation process of titanium middlings: the feeding system 5 includes the storage workshop and feeding platform of titanium middlings, and the feeding system 5 is not limited to the storage workshop and loading platform, but only used for storage and transportation of dehydrated titanium middlings use, and the dehydrated mineral material can also be directly transported to the next step; the titanium medium ore of the feeding system 5 comes from the titanium medium ore mineral material dehydrated by the filter 4, and the titanium medium ore is discharged from the feeding system 5 The feed port is connected to the feed port of the rotary drying kiln 7 through the first conveyor belt 6; the rotary drying kiln 7 is used to dry and dry the dehydrated titanium medium ore to form dry titanium medium ore mineral material; the rotary drying kiln 7 The energy source for drying the mineral material is usually natural gas or other energy supply for drying; the titanium medium ore mineral material coming out of the outlet of the rotary drying kiln 7 has a relatively high temperature, about 90 °C; it cannot be directly used for drying. Select, the discharge port of rotary drying kiln 7 is connected with the feed port of cooling kiln 8; Cooling kiln 8 will carry out cooling treatment to the titanium medium ore after drying by rotary drying kiln 7, and then the discharge port of cooling kiln 8 is connected dry magnetic The separation unit 9 transports the dried and cooled titanium middling ore to the dry magnetic separation unit 9 for subdivision and screening of the mineral materials.

Embodiment 2: Compared with Embodiment 1, the further improvement of this embodiment lies in;

As shown in Figure 2, in the wet separation and dehydration process of zirconium-titanium ore, the zirconium medium ore discharge port of the first wet magnetic separator 3 is also connected with the second wet magnetic separator 10 through the pipeline; The zirconium medium ore screened by the magnetic separator 3 is also mixed with some titanium medium ore after the first screening, and is screened by the second wet magnetic separator 10 to improve the screening purity of the zirconium medium ore and titanium medium ore The second wet magnetic separator 10 has the same structure as the first wet magnetic separator 3, and the second wet magnetic separator 10 has a zirconium medium ore discharge port and a titanium medium ore discharge port, and passes through the second wet magnetic separator 10 sieves The separated titanium medium ore minerals are transported to the filter 4 for dehydration at the titanium medium ore discharge port, and then transported to the feeding system 5; and the zirconium medium ore minerals after the secondary screening enter the zirconium medium ore screening process to go. After the second wet magnetic separator 10 , more wet magnetic separators can be connected in series, which is not limited to a group of second wet magnetic separators 10 . Through the use of the above technical solutions, the zirconium-titanium slurry is purified and separated from the zirconium and titanium middlings several times, and the screening accuracy is improved.

In the dry separation process of titanium medium ore, the dry magnetic separation unit 9 includes a first dry magnetic separator 91 and a second dry magnetic separator 92; the dry magnetic separation unit 9 adopts a dry permanent magnet cylinder type Magnetic separator, the magnetic separation drum of the dry permanent magnetic drum magnetic separator is a carbon fiber drum, which is different from the traditional magnetic separation drum made of copper material, which not only ensures the hardness requirements of the material of the drum itself, but more importantly What is remarkable is that the carbon fiber drum will not generate heat during the screening process of titanium medium ore, resulting in a reduction in the effect of magnetic separation. The feed port of the first dry magnetic separator 91 is connected to the discharge port of the cooling kiln 8; the first dry magnetic separator Machine 91 comprises iron ore concentrate discharge port, titanium concentrate discharge port and mixing material discharge port; Cooling kiln 8 discharge port place output after the titanium middle ore ore temperature of cooling has reached dry separation temperature requirement, according to The magnetic properties of various mineral materials in the titanium medium ore mineral materials are different; the first dry magnetic separator 91 separates the titanium medium ore mineral materials into iron concentrate, titanium concentrate and mixed mineral materials; the separated iron concentrate and titanium concentrates are transported and stored through the conveyor belt; the remaining mixed mineral materials are connected to the second dry magnetic separator 92 through the mixing outlet of the first dry magnetic separator 91, and are processed again by the second dry magnetic separator 92. Screening work to separate titanium concentrate, garnet medium ore, zirconium medium ore and other mineral materials. At the same time, the titanium medium ore minerals from the outlet of the cooling kiln 8 can also directly enter the second dry magnetic separator The entrance of 92 is directly used for mineral material screening.

Optimize the wet magnetic separation process of zirconium ore and titanium medium ore in zirconium-titanium ore through the second wet magnetic separator 10 set, improve the purity of titanium medium ore and zirconium medium ore after screening respectively, through the first set The dry magnetic separator 91 and the second dry magnetic separator 92 optimize the screening and sorting process of titanium medium ore, and improve the screening of various mineral materials such as zirconium medium ore, titanium concentrate and iron concentrate after screening. purity, resulting in huge economic benefits.

Embodiment 3: Compared with the technical solution of Embodiment 1 or Embodiment 2, the further improvement of this embodiment lies in:

As shown in Figure 2, a desilter system 11 is also added between the impurity removal vibrating screen 2 and the first wet magnetic separator 3; the desilter system 11 includes a desilter cyclone 111 and a sedimentation treatment system 112; the impurity removal vibration The sieve 2 transports the zirconium-titanium slurry that has been sieved and removed from the pulp outlet into the feed port of the desilter cyclone 111; The mud is separated and screened out, and the zirconium-titanium slurry is screened to reduce the amount of dust; the desilter cyclone 111 includes a pulp outlet and a mud outlet; the pulp outlet of the desilter cyclone 111 is connected to the first wet The feed inlet of the magnetic separator 3; the zirconium-titanium ore slurry after the mud is screened out from the slurry outlet in the desilter cyclone 111 enters the wet screening process; and the desilter cyclone 111 The dust slurry flowing out of the mud outlet is transported to the sedimentation treatment system 112; the sedimentation treatment system 112 includes a thickener 1121 and a plate filter press 1122, and the mud outlet of the desilter cyclone 111 is connected to the feed of the thickener 1121 The function of the thickener 1121 is to settle the dust and mud. The thickener 1121 includes a clear water port and an underflow port; after the dust and mud have settled, the clear liquid in the upper layer after settlement will flow out from the clear water port of the thickener 1121, and the mud will settle down to the thickened The underflow port of filter press 1121 is transported to plate filter press 1122 for processing.

Wherein between the cooling kiln 8 and the first dry magnetic separator 91, a crushing vibrating screen 13 is also arranged. solidified block, to ensure the magnetic separation effect of the follow-up dry magnetic separation unit 9, and improve the mineral processing purity.

By adding the mud removal system 11 in the screening and sorting system, the zirconium-titanium ore is subjected to mud and dust removal treatment before the sorting process, which effectively improves the purity of the mineral materials that need to be screened out in the follow-up, and reduces The dust content in the mineral material is reduced, and the mineral material with improved purity has more economic value. At the same time, after the desilter system 11 greatly reduces the dust content in the mineral material, it can greatly reduce the cost of the workshop in the subsequent dry separation process. Therefore, the environment in the production workshop is improved and the harm to the staff in the workshop is reduced.

Embodiment 4: Compared with Embodiment 1, Embodiment 2 and Embodiment 3, the further improvement of the technical solution of this embodiment to the screening and sorting system lies in:

As shown in Figure 2, a second conveyor belt 12 is also added at the discharge port of the feeding system 5, and the discharge port of the feeding system 5 is also connected with the second conveyor belt 12, and the second conveyor belt 12 will be supplied by the material feeding system 5. The medium ore wet material is directly sent to the feed port of the cooling kiln 8; the principle is: the titanium medium ore material supplied by the feeding system 5 is dehydrated by the filter 4, and the titanium medium ore is dehydrated by the filter 4. The mineral material also contains a certain amount of moisture, usually about 5%, and the discharge port of the feeding system 5 transmits the mineral material to the first conveyor belt 6 and the second conveyor belt 12 respectively; the titanium medium ore mineral material on the first conveyor belt 6 After being dried by the rotary drying kiln 7, the dried titanium medium ore mineral material is obtained. The temperature is about 90°C, which does not meet the temperature requirements of dry screening, and the wet titanium medium ore mineral material on the second conveyor belt 12 Before entering the cooling kiln 8, it is mixed with the dried titanium medium ore mineral material, and the wet titanium medium ore mineral material is dried by utilizing the residual temperature of the dried titanium medium ore mineral material. Due to the drying needs of the rotary drying kiln 7 The heat needs to be obtained by burning natural gas. The design of the second conveyor belt 12 can save a part of the drying cost of the titanium medium ore wet mineral material. The drying of one ton of mineral material requires about eight cubic meters of natural gas, which greatly reduces the use of natural gas. Quantity, reduce cost input, and increase production capacity at the same time.

Embodiment 5: Compared with the screening and sorting process of Embodiment 1, Embodiment 2 and Embodiment 3 in this embodiment, as shown in Figures 1-3, a circulating water system 14 is also included in the wet magnetic separation process stage , the circulating water system 14 realizes the water supply and circulation in the whole wet magnetic separation process stage, the circulating water system 14 is respectively connected with the slurry tank 1 and the first wet magnetic separator 3 by pipelines, and the circulating water system 14 is connected with the slurry through the pipeline In the pool 11, the zirconium-titanium ore and water are mixed in a certain proportion to form a zirconium-titanium mortar for wet magnetic separation process, and the circulating water system 14 is respectively connected to the impurity removal vibrating screen 2, the first wet magnetic separation and 3 and The second wet magnetic separator 10; in order to provide supplementary magnetic separation process water, at the same time, on equipment such as the thickener 1121, the filter 4 and the magnetic separator, all are connected with the return water pipeline to the circulating water system, thereby forming the whole wet magnetic separator Selected stages of the water cycle.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention to other forms. Any skilled person who is familiar with this profession may use the technical content disclosed above to change or modify the equivalent of the equivalent change. The embodiments are applied to other fields, but any simple modification or equivalent change made to the above embodiments according to the technical essence of the present invention still belongs to the protection scope of the technical solutions of the present invention, as long as they do not depart from the content of the technical solutions of the present invention.

Claims (10)

1. The utility model provides a titanium ore screening and sorting system in zirconite which characterized in that: comprises a slurry melting tank (1), an impurity removal vibrating screen (2), a first wet magnetic separator (3), a filter (4), a feeding system (5), a first conveyor belt (6), a rotary drying kiln (7), a cooling kiln (8) and a dry magnetic separator set (9); a discharge hole of the pulp melting tank (1) is connected with a feed hole of the impurity removal vibrating screen (2), and the impurity removal vibrating screen (2) comprises an ore pulp discharge hole; the ore pulp discharge port of the impurity removal vibrating screen (2) is connected with the feed port of the first wet magnetic separator (3); the first wet magnetic separator (3) comprises a titanium middling discharge port and a zirconium middling discharge port; the titanium middling discharge port of the first wet magnetic separator (3) is connected with the feed port of the filter (4); a discharge hole of the filter (4) is connected with a feeding system (5), and a discharge hole of the feeding system (5) is connected with a feed hole of a rotary drying kiln (7) through a first conveyor belt (6); a discharge hole of the rotary drying kiln (7) is connected with a feed hole of the cooling kiln (8); and a discharge port of the cooling kiln (8) is connected with a dry magnetic separator set (9).

2. The system for screening and sorting the middlings and titaniferous ores of the zirconite according to claim 1, wherein: a zirconium middling discharge port of the first wet magnetic separator (3) is connected with a second wet magnetic separator (10); the second wet magnetic separator (10) comprises a zirconium middling discharge port and a titanium middling discharge port; and a titanium middling discharge port of the second wet magnetic separator (10) is connected with the filter (4).

3. The system for screening and sorting the titanium ore in the zirconite according to claim 1, characterized in that: the dry magnetic separator set (9) comprises a first dry magnetic separator (91) and a second dry magnetic separator (92); the feed inlet of the first dry magnetic separator (91) is connected with the discharge outlet of the cooling kiln (8); the first dry magnetic separator (91) comprises an iron concentrate discharge port, a titanium concentrate discharge port and a mixed material discharge port; and a material mixing and discharging port of the first dry magnetic separator (91) is connected with a second dry magnetic separator (92).

4. The system for screening and sorting the titanium ores in the zirconite according to claim 1 or 2, characterized in that: a mud removing system (11) is also arranged between the impurity removing vibrating screen (2) and the first wet magnetic separator (3); the desilting system (11) comprises a desilting cyclone (111) and a sedimentation treatment system (112); the ore pulp discharge port of the impurity removal vibrating screen (2) is connected with the feed port of the silt removal cyclone (111); the desliming cyclone (111) comprises an ore pulp discharge port and a slurry discharge port; the ore pulp discharge port of the desliming cyclone (111) is connected with the feed port of the first wet magnetic separator (3); and a slurry discharge port of the mud removal cyclone (111) is connected with a sedimentation treatment system (112).

5. The system for screening and sorting the titanium ore in the zirconite according to claim 4, characterized in that: the sedimentation treatment system (112) comprises a thickener (1121) and a plate-shaped filter press (1122), a slurry discharge port of the mud removal cyclone (111) is connected with a feed port of the thickener (1121), and the thickener (1121) comprises a clear water port and a bottom flow port; the underflow port of the thickener (1121) is connected with a plate-shaped filter press (1122).

6. The system for screening and sorting the middlings and titaniferous ores of the zirconite according to claim 1, wherein: the material feeding device is characterized by further comprising a second conveyor belt (12), wherein a discharge hole of the feeding system (5) is connected with a feed inlet of the cooling kiln (8) through the second conveyor belt (12).

7. The system for screening and sorting the titanium ore in the zirconite according to claim 3, characterized in that: and a crushing vibrating screen (13) is also arranged between the cooling kiln (8) and the first dry magnetic separator (91).

8. The system for screening and sorting the middlings and titaniferous ores of the zirconite according to claim 1, wherein: still include circulating water system (14), circulating water system (14) pipe connection slurrying pond (1) and first wet-type magnet separator (3) respectively.

9. The system for screening and sorting the middlings and titaniferous ores of the zirconite according to claim 1, wherein: the first wet magnetic separator (3) adopts a wet permanent magnetic roller magnetic separator.

10. The system for screening and sorting the middlings and titaniferous ores of the zirconite according to claim 1 or 3, wherein: the dry type magnetic separator set (9) adopts a dry type permanent magnet drum magnetic separator, and a magnetic separation drum of the dry type permanent magnet drum magnetic separator is a carbon fiber drum.

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