Refined iron powder washing and sorting system

Abstract

The utility model discloses fine iron powder washing and selecting system, including dry section, water selection section, dry discharge section, and the discharge end of dry section is connected with the feed end of water selection section, and the tailings end of water selection section is connected with the feed end of dry discharge section, water selection section includes primary ball mill, and is connected with primary water selection magnetic separator, water selection cyclone, cyclone group, high -frequency sieve, secondary water selection magnetic separator, tertiary water selection magnetic separator, grade elevator, water selection filter in proper order, iron concentrate powder warehouse, dry discharge section includes dry discharge cyclone, and is connected with concentration tank, dewatering screen, dry discharge filter, tailings pond in proper order, and the liquid outlet of dry discharge filter, the liquid outlet of dewatering screen is connected with the import of clear water pool respectively. Advantage: water selection section is selected in proper order after breaking again, and the efficiency of one -time magnetic selection is promoted, and the iron powder resource of tailings pulp can be selected by magnetism, is not wasted, realizes dry discharge through filtration, dehydration, and water resource reuse is in water selection section, avoids waste.

Description

Technical fields:

[0001] This utility model relates to the field of iron ore washing and beneficiation, specifically to a refined iron powder washing and beneficiation system. Background technology:

[0002] When iron ore is washed and beneficiated, the iron concentrate (lumps) after dry separation is usually further ground, then magnetically separated once, and separated into particles of different sizes by a hydrocyclone. The coarse material is screened, ground, and then magnetically separated a second time. The fine material is screened after the second magnetic separation. The material on the screen is ground, and the material under the screen is magnetically separated a third time. Finally, the water is filtered to form the finished product.

[0003] Each magnetic separation process produces tailings slurry to varying degrees, which is discharged into the tailings dam via wet discharge.

[0004] In the above process, each magnetic separation requires grinding before separation, which is a long and inefficient process. The amount of magnetic separation is small each time, and the product output is slow. Secondly, there are still usable iron powder resources in the tailings slurry, and direct discharge is wasteful. Finally, wet discharge will take away most of the water, which is a waste of water resources, and the washing and beneficiation process also requires water resources. Utility Model Content:

[0005] The purpose of this invention is to provide a system for washing and selecting refined iron powder.

[0006] This utility model is implemented by the following technical solution:

[0007] The iron powder washing and beneficiation system includes a dry separation section, a wet separation section, and a dry discharge section. The discharge end of the dry separation section is connected to the feed end of the wet separation section, and the tailings end of the wet separation section is connected to the feed end of the dry discharge section.

[0008] The water separation section includes a primary ball mill, a primary water separation magnetic separator, a water separation hydrocyclone, a hydrocyclone assembly, a high-frequency screen, a secondary water separation magnetic separator, a tertiary water separation magnetic separator, a grade booster, a water separation filter, an iron concentrate silo, a secondary ball mill, a quaternary water separation magnetic separator, and a quinary water separation magnetic separator. The inlet of the primary ball mill is the feed end of the water separation section, the outlet of the primary ball mill is connected to the inlet of the primary water separation magnetic separator, and the outlet of the primary water separation magnetic separator is connected to the inlet of the water separation hydrocyclone. The fine material outlet of the hydrocyclone is connected to the inlet of the hydrocyclone assembly, the fine material outlet of the hydrocyclone assembly is connected to the inlet of the high-frequency screen, the undersize outlet of the high-frequency screen is connected to the inlet of the secondary water-based magnetic separator, the outlet of the secondary water-based magnetic separator is connected to the inlet of the tertiary water-based magnetic separator, the outlet of the tertiary water-based magnetic separator is connected to the inlet of the grade booster, the outlet of the grade booster is connected to the inlet of the water-based filter, and the outlet of the water-based filter is connected to the inlet of the iron concentrate silo.

[0009] The coarse material outlet of the hydrocyclone, the coarse material outlet of the hydrocyclone group, and the oversize outlet of the high-frequency screen are respectively connected to the inlet of the secondary ball mill. The outlet of the secondary ball mill is connected to the inlet of the fourth-stage hydromagnetic separator, and the outlet of the fourth-stage hydromagnetic separator is connected to the inlet of the iron concentrate silo.

[0010] The discharge ports of the primary, secondary, tertiary, and quaternary water-separated magnetic separators are respectively connected to the inlet of the quaternary water-separated magnetic separator. The outlet of the quaternary water-separated magnetic separator is connected to the inlet of the iron concentrate silo. The discharge port of the quaternary water-separated magnetic separator is the tailings end of the water separation section.

[0011] The dry discharge section includes a dry discharge hydrocyclone, a thickener, a dewatering screen, a dry discharge filter, a clarification tank, and a tailings dam. The inlet of the dry discharge hydrocyclone is the feed end of the dry discharge section. The fine material outlet of the dry discharge hydrocyclone is connected to the inlet of the thickener. The outlet of the thickener is connected to the inlet of the dry discharge filter. The outlet of the dry discharge filter is connected to the inlet of the tailings dam. The coarse material outlet of the dry discharge hydrocyclone is connected to the inlet of the dewatering screen. The outlet of the dewatering screen is connected to the inlet of the tailings dam.

[0012] The outlet of the dry drain filter and the outlet of the dewatering screen are respectively connected to the inlet of the clarification tank.

[0013] Preferably, the dry separation section includes a feeder, a jaw crusher, a primary cone crusher, a secondary cone crusher, a primary dry magnetic separator, a primary vibrating screen, a high-pressure roller mill, a secondary vibrating screen, a secondary dry magnetic separator, and a dry concentrate silo. The feeder outlet is connected to the inlet of the jaw crusher, the jaw crusher outlet is connected to the inlet of the primary cone crusher, the primary cone crusher outlet is connected to the inlet of the secondary cone crusher, the secondary cone crusher outlet is connected to the inlet of the primary dry magnetic separator, the primary dry magnetic separator outlet is connected to the inlet of the primary vibrating screen, and the undersize outlet of the primary vibrating screen is connected to the inlet of the dry concentrate silo.

[0014] The screen outlet of the primary vibrating screen is connected to the inlet of the high-pressure roller mill, the outlet of the high-pressure roller mill is connected to the inlet of the secondary vibrating screen, and the screen outlet of the secondary vibrating screen is connected to the inlet of the secondary cone crusher.

[0015] The undersize outlet of the secondary vibrating screen is connected to the inlet of the secondary dry magnetic separator, and the outlet of the secondary dry magnetic separator is connected to the inlet of the dry concentrate silo. The dry concentrate silo is the discharge end of the dry separation section.

[0016] The advantages of this invention are as follows: In the water separation section, coarse crushing, medium crushing, and fine crushing are performed sequentially, followed by layer-by-layer magnetic separation, which improves the efficiency of one-time magnetic separation, reduces the magnetic separation time, increases the amount separated by each magnetic separation, and increases the speed of product discharge in one go. Secondly, the usable iron powder resources in the tailings slurry are magnetically separated without waste. Finally, after filtration and dewatering, dry discharge is achieved, and water resources are reused in the water separation section to avoid waste. Attached image description:

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] In the picture:

[0020] Dry separation section 1, feeder 1.1, jaw crusher 1.2, primary cone crusher 1.3, secondary cone crusher 1.4, primary dry magnetic separator 1.5, primary vibrating screen 1.6, high-pressure roller mill 1.7, secondary vibrating screen 1.8, secondary dry magnetic separator 1.9, dry concentrate silo 1.10;

[0021] 2. Water separation section; 2.1. Primary ball mill; 2.2. Primary water separation magnetic separator; 2.3. Water separation hydrocyclone; 2.4. Hydrocyclone assembly; 2.5. High-frequency screen; 2.6. Secondary water separation magnetic separator; 2.7. Tertiary water separation magnetic separator; 2.8. Grade booster; 2.9. Water separation filter; 2.10. Iron concentrate silo; 2.11. Secondary ball mill; 2.12. Quaternary water separation magnetic separator; 2.13. Fifth water separation magnetic separator;

[0022] 3. Dry discharge section, 3.1. Dry discharge hydrocyclone, 3.2. Concentrator, 3.3. Dewatering screen, 3.4. Dry discharge filter, 3.5. Clarification pool, 3.6. Tailings dam. Detailed implementation method:

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figure 1As shown, the iron powder washing and beneficiation system includes a dry separation section 1, a wet separation section 2, and a dry discharge section 3. The discharge end of the dry separation section 1 is connected to the feed end of the wet separation section 2, and the tailings end of the wet separation section 2 is connected to the feed end of the dry discharge section 3.

[0025] The dry separation section 1 includes a feeder 1.1, a jaw crusher 1.2, a primary cone crusher 1.3, a secondary cone crusher 1.4, a primary dry magnetic separator 1.5, a primary vibrating screen 1.6, a high-pressure roller mill 1.7, a secondary vibrating screen 1.8, a secondary dry magnetic separator 1.9, and a dry concentrate silo 1.10. The outlet of the feeder 1.1 is connected to the inlet of the jaw crusher 1.2, the outlet of the jaw crusher 1.2 is connected to the inlet of the primary cone crusher 1.3, the outlet of the primary cone crusher 1.3 is connected to the inlet of the secondary cone crusher 1.4, the outlet of the secondary cone crusher 1.4 is connected to the inlet of the primary dry magnetic separator 1.5, the outlet of the primary dry magnetic separator 1.5 is connected to the inlet of the primary vibrating screen 1.6, and the undersize outlet of the primary vibrating screen 1.6 is connected to the inlet of the dry concentrate silo 1.10.

[0026] The raw ore is transported from the ore stockpile to the feeder 1.1 by a loader. The feeder 1.1 (using a vibrating feeder) feeds the ore to the jaw crusher 1.2 for coarse crushing. The crushed product is conveyed by a belt conveyor to the primary cone crusher 1.3 (using a cone crusher) for medium crushing. The medium crushed product is conveyed by a belt conveyor to the secondary cone crusher 1.4 (using a cone crusher) for fine crushing. The fine crushed product is conveyed by a belt conveyor to the primary dry magnetic separator 1.5 (using a dry magnetic separator). The concentrate is transported to the primary vibrating screen 1.6 for screening. The undersize material is temporarily stored in the dry concentrate silo 1.10.

[0027] The outlet of the primary vibrating screen 1.6 is connected to the inlet of the high-pressure roller mill 1.7, the outlet of the high-pressure roller mill 1.7 is connected to the inlet of the secondary vibrating screen 1.8, and the outlet of the secondary vibrating screen 1.8 is connected to the inlet of the secondary cone crusher 1.4.

[0028] The material on the screen of the primary vibrating screen 1.6 is transported to the high-pressure roller mill 1.7. The product after being ground by the high-pressure roller mill 1.7 is sent to the secondary vibrating screen 1.8. The material on the screen is returned to the secondary cone crusher 1.4 for further crushing.

[0029] The undersize outlet of the secondary vibrating screen 1.8 is connected to the inlet of the secondary dry magnetic separator 1.9, and the outlet of the secondary dry magnetic separator 1.9 is connected to the inlet of the dry concentrate silo 1.10. The dry concentrate silo 1.10 is the discharge end of the dry separation section 1. The undersize material of the secondary vibrating screen 1.8 is conveyed to the secondary dry magnetic separator 1.9 (using a dry magnetic separator) by a belt. The concentrate is temporarily stored in the dry concentrate silo 1.10, and the stones screened out from the waste material are temporarily stored in the waste rock dump and sold off periodically.

[0030] The water separation section 2 includes a primary ball mill 2.1, a primary water separation magnetic separator 2.2, a water separation hydrocyclone 2.3, a hydrocyclone assembly 2.4, a high-frequency screen 2.5, a secondary water separation magnetic separator 2.6, a tertiary water separation magnetic separator 2.7, a grade booster 2.8, a water separation filter 2.9, an iron concentrate silo 2.10, a secondary ball mill 2.11, a quaternary water separation magnetic separator 2.12, and a quinary water separation magnetic separator 2.13. The inlet of the primary ball mill 2.1 is the feed end of the water separation section 2, and the outlet of the primary ball mill 2.1 is connected to the inlet of the primary water separation magnetic separator 2.2. The outlet of the primary water separation magnetic separator 2.2 is connected to the water separation... The inlet of hydrocyclone 2.3 is connected to the fine material outlet of hydrocyclone 2.3 and the inlet of hydrocyclone group 2.4. The fine material outlet of hydrocyclone group 2.4 is connected to the inlet of high frequency screen 2.5. The undersize outlet of high frequency screen 2.5 is connected to the inlet of secondary water separation magnetic separator 2.6. The outlet of secondary water separation magnetic separator 2.6 is connected to the inlet of tertiary water separation magnetic separator 2.7. The outlet of tertiary water separation magnetic separator 2.7 is connected to the inlet of grade elevator 2.8. The outlet of grade elevator 2.8 is connected to the inlet of water separation filter 2.9. The outlet of water separation filter 2.9 is connected to the inlet of iron concentrate silo 2.10.

[0031] Dry concentrate is conveyed from dry concentrate silo 1.10 to primary ball mill 2.1 for grinding via belt, then to primary wet magnetic separator 2.2 (using a water-washed magnetic separator, also called a wet magnetic separator) for magnetic separation. The magnetically separated material enters hydrocyclone 2.3 (using a single hydrocyclone). Small-diameter material enters hydrocyclone group 2.4. Small-diameter material from hydrocyclone group 2.4 enters high-frequency screen 2.5 for processing. Fine-diameter material is then sequentially magnetically separated by secondary and tertiary wet magnetic separators 2.6 and 2.7. The secondary and tertiary wet magnetic separators 2.6 and 2.7 (using a finer magnetic separator) process the material. After processing by grade elevator 2.8, the material is filtered by wet filter 2.9 to become the product, which is temporarily stored in iron concentrate silo 2.10 for sale. The dewatered water is returned to primary ball mill 2.1 for recycling and is not discharged.

[0032] The coarse material outlet of hydrocyclone 2.3, the coarse material outlet of hydrocyclone group 2.4, and the over-screen outlet of high-frequency screen 2.5 are respectively connected to the inlet of secondary ball mill 2.11. The outlet of secondary ball mill 2.11 is connected to the inlet of quaternary water-selective magnetic separator 2.12. The outlet of quaternary water-selective magnetic separator 2.12 is connected to the inlet of iron concentrate silo 2.10.

[0033] Larger particles from the hydrocyclone 2.3, hydrocyclone group 2.4, and high-frequency screen 2.5 are further ground in the secondary ball mill 2.11. After being subjected to four stages of water separation and magnetic separation by the magnetic separator 2.12, the larger particles undergo two stages of grinding and magnetic separation. The materials processed by the two ball mills are temporarily stored in the iron concentrate silo 2.10 after magnetic separation.

[0034] The discharge ports of the primary water separation magnetic separator 2.2, the secondary water separation magnetic separator 2.6, the tertiary water separation magnetic separator 2.7, and the quaternary water separation magnetic separator 2.12 are respectively connected to the inlet of the quinary water separation magnetic separator 2.13. The outlet of the quinary water separation magnetic separator 2.13 is connected to the inlet of the iron concentrate silo 2.10. The discharge port of the quinary water separation magnetic separator 2.13 is the tailings end of the water separation section 2.

[0035] The tailings slurry discharged from the primary water-separated magnetic separator 2.2, the secondary water-separated magnetic separator 2.6, the tertiary water-separated magnetic separator 2.7, and the quaternary water-separated magnetic separator 2.12 is pumped into the quinary water-separated magnetic separator 2.13 for magnetic separation. The magnetically separated iron concentrate enters the iron concentrate silo 2.10, and the magnetically separated tailings slurry is transported to the dry discharge section 3 through pipelines.

[0036] The dry discharge section 3 includes a dry discharge hydrocyclone 3.1, a thickener 3.2, a dewatering screen 3.3, a dry discharge filter 3.4, a clarification tank 3.5, and a tailings dam 3.6. The inlet of the dry discharge hydrocyclone 3.1 is the feed end of the dry discharge section 3. The fine material outlet of the dry discharge hydrocyclone 3.1 is connected to the inlet of the thickener 3.2. The outlet of the thickener 3.2 is connected to the inlet of the dry discharge filter 3.4. The outlet of the dry discharge filter 3.4 is connected to the inlet of the tailings dam 3.6. The coarse material outlet of the dry discharge hydrocyclone 3.1 is connected to the inlet of the dewatering screen 3.3. The outlet of the dewatering screen 3.3 is connected to the inlet of the tailings dam 3.6.

[0037] Tailings slurry enters dry discharge hydrocyclone 3.1, fine sand slurry enters thickener 3.2 for thickening, and then enters dry discharge filter 3.4 (using filter) for further drainage. Tailings sand enters tailings dam 3.6; coarse sand slurry enters dewatering screen 3.3 for dewatering, and tailings sand also enters tailings dam 3.6.

[0038] The outlet of the dry discharge filter 3.4 and the outlet of the dewatering screen 3.3 are connected to the inlet of the clarification tank 3.5 respectively. The water filtered by the dry discharge filter 3.4 and the water dewatered by the dewatering screen 3.3 enter the clarification tank 3.5 and can be used as the water selection section 2 to reuse water resources.

[0039] Advantages: In the water separation section 2, coarse crushing, medium crushing, and fine crushing are performed sequentially, followed by layer-by-layer magnetic separation. This improves the efficiency of one-time magnetic separation, reduces the magnetic separation time, increases the amount separated by each magnetic separation, and increases the speed of product discharge in one go. Secondly, the usable iron powder resources in the tailings slurry are magnetically separated without waste. Finally, after filtration and dewatering, the water is discharged dry, and the water resources are reused in the water separation section 2 to avoid waste.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A refined iron powder washing and beneficiation system, characterized in that, It includes a dry separation section, a wet separation section, and a dry discharge section. The discharge end of the dry separation section is connected to the feed end of the wet separation section, and the tailings end of the wet separation section is connected to the feed end of the dry discharge section. The water separation section includes a primary ball mill, a primary water separation magnetic separator, a water separation hydrocyclone, a hydrocyclone assembly, a high-frequency screen, a secondary water separation magnetic separator, a tertiary water separation magnetic separator, a grade booster, a water separation filter, an iron concentrate silo, a secondary ball mill, a quaternary water separation magnetic separator, and a quinary water separation magnetic separator. The inlet of the primary ball mill is the feed end of the water separation section, the outlet of the primary ball mill is connected to the inlet of the primary water separation magnetic separator, and the outlet of the primary water separation magnetic separator is connected to the inlet of the water separation hydrocyclone. The fine material outlet of the hydrocyclone is connected to the inlet of the hydrocyclone assembly, the fine material outlet of the hydrocyclone assembly is connected to the inlet of the high-frequency screen, the undersize outlet of the high-frequency screen is connected to the inlet of the secondary water-based magnetic separator, the outlet of the secondary water-based magnetic separator is connected to the inlet of the tertiary water-based magnetic separator, the outlet of the tertiary water-based magnetic separator is connected to the inlet of the grade booster, the outlet of the grade booster is connected to the inlet of the water-based filter, and the outlet of the water-based filter is connected to the inlet of the iron concentrate silo. The coarse material outlet of the hydrocyclone, the coarse material outlet of the hydrocyclone group, and the oversize outlet of the high-frequency screen are respectively connected to the inlet of the secondary ball mill. The outlet of the secondary ball mill is connected to the inlet of the fourth-stage hydromagnetic separator, and the outlet of the fourth-stage hydromagnetic separator is connected to the inlet of the iron concentrate silo. The discharge ports of the primary, secondary, tertiary, and quaternary water-separated magnetic separators are respectively connected to the inlet of the quaternary water-separated magnetic separator. The outlet of the quaternary water-separated magnetic separator is connected to the inlet of the iron concentrate silo. The discharge port of the quaternary water-separated magnetic separator is the tailings end of the water separation section. The dry discharge section includes a dry discharge hydrocyclone, a thickener, a dewatering screen, a dry discharge filter, a clarification tank, and a tailings dam. The inlet of the dry discharge hydrocyclone is the feed end of the dry discharge section. The fine material outlet of the dry discharge hydrocyclone is connected to the inlet of the thickener. The outlet of the thickener is connected to the inlet of the dry discharge filter. The outlet of the dry discharge filter is connected to the inlet of the tailings dam. The coarse material outlet of the dry discharge hydrocyclone is connected to the inlet of the dewatering screen. The outlet of the dewatering screen is connected to the inlet of the tailings dam. The outlet of the dry drain filter and the outlet of the dewatering screen are respectively connected to the inlet of the clarification tank.

2. The iron powder washing and beneficiation system according to claim 1, characterized in that: The dry separation section includes a feeder, a jaw crusher, a primary cone crusher, a secondary cone crusher, a primary dry magnetic separator, a primary vibrating screen, a high-pressure roller mill, a secondary vibrating screen, a secondary dry magnetic separator, and a dry concentrate silo. The feeder outlet is connected to the inlet of the jaw crusher, the jaw crusher outlet is connected to the inlet of the primary cone crusher, the primary cone crusher outlet is connected to the inlet of the secondary cone crusher, the secondary cone crusher outlet is connected to the inlet of the primary dry magnetic separator, the primary dry magnetic separator outlet is connected to the inlet of the primary vibrating screen, and the undersize outlet of the primary vibrating screen is connected to the inlet of the dry concentrate silo. The screen outlet of the primary vibrating screen is connected to the inlet of the high-pressure roller mill, the outlet of the high-pressure roller mill is connected to the inlet of the secondary vibrating screen, and the screen outlet of the secondary vibrating screen is connected to the inlet of the secondary cone crusher. The undersize outlet of the secondary vibrating screen is connected to the inlet of the secondary dry magnetic separator, and the outlet of the secondary dry magnetic separator is connected to the inlet of the dry concentrate silo. The dry concentrate silo is the discharge end of the dry separation section.

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