Crushing and separating device for blast furnace titanium slag

Abstract

The invention discloses a crushing and separating device for blast furnace titanium slag. The crushing and separating device comprises a crushing groove, a crushing roller set located in the crushing groove, a plurality of water spraying heads arranged above one side of the crushing groove and used for cleaning the crushing roller set, a drainage plate arranged in the middle of the crushing groove located on one side of the water spraying heads, and a slag discharging box arranged below the drainage plate. Aiming at crushing and screening of the blast furnace titanium slag, the blast furnace titanium slag meeting the pickling particle size requirement can be directly screened out, the blast furnace titanium slag subjected to pre-pickling or the blast furnace titanium slag which is not subjected to pre-pickling can be subjected to classified crushing, and the cleaning frequency of the crushing tool bit is properly improved aiming at the blast furnace titanium slag subjected to pre-pickling; and for the blast furnace titanium slag which is not subjected to pre-pickling, the cleaning frequency of the crushing tool bit is properly reduced, the tool bit is kept clean, and the practicability is high.

Description

Technical Field

[0001] The invention relates to the technical field of solid waste treatment, and in particular to a crushing and separation device for blast furnace titanium slag. Background Art

[0002] Blast furnace titanium slag is a high-grade titanium resource, usually coexisting with iron, silicon, aluminum, magnesium and other elements. Due to its complex mineral composition and physical and chemical properties, blast furnace titanium slag is difficult to use directly in traditional smelting processes and is often accumulated as solid waste, resulting in resource waste and environmental pollution.

[0003] The treatment and resource utilization of blast furnace titanium slag is a research hotspot in the field of metallurgy and materials science. At present, for the comprehensive utilization of blast furnace titanium slag, the alkali leaching-pickling-pickling multi-stage cycle process is generally used to prepare titanium-rich materials. Before the above process, the blast furnace titanium slag needs to be pretreated. Generally, a high-energy ball mill is used to grind the titanium slag to a particle size of less than 48mm, and then it is dried in a drying oven at 110℃ for 24h to achieve the leaching conditions.

[0004] It can be seen that the pretreatment step of blast furnace titanium slag is also very important. If the quality of blast furnace titanium slag cannot be controlled, the leaching effect will be affected. However, after investigation, it is found that there is no dedicated equipment for the pretreatment step of blast furnace titanium slag, especially crushing and separation. Traditional crushing equipment is generally used, but traditional crushing equipment does not strengthen its corrosion resistance too much. The subsequent acid and alkali washing of blast furnace titanium slag will bring some corrosive effects. At the same time, blast furnace titanium slag generally needs to be dried and acid-washed immediately when crushed. Therefore, pretreatment equipment dedicated to blast furnace titanium slag is needed. Summary of the invention

[0005] In view of the above-mentioned problems, the present invention provides a crushing and separation device for blast furnace titanium slag.

[0006] The technical solution of the present invention is:

[0007] A crushing and separation device for blast furnace titanium slag, comprising a crushing tank, a crushing roller group located inside the crushing tank, a plurality of water spray heads for cleaning the crushing roller group are arranged above one side of the crushing tank, a drainage plate is arranged in the middle of the crushing tank located on one side of the water spray head, and a slag discharge box is arranged below the drainage plate;

[0008] The crushing roller group includes a rotating shaft that penetrates the side wall of the crushing groove, one end of the rotating shaft located outside the crushing groove is connected to a rotating motor, and the other end of the rotating shaft is rotatably connected to the side wall of the crushing groove, and a plurality of double-shaft crushing rollers are evenly arranged along the circumference of the rotating shaft. The double-shaft crushing roller includes two symmetrical and mutually meshing cylindrical crushing cutter heads, one end of the crushing cutter head is provided with a motor group, and the motor group includes two driving motors, and the two driving motors respectively drive the two crushing cutter heads to rotate in opposite directions;

[0009] The drain plate is slidably connected to the first slide groove provided on the left side wall of the crushing trough, a discharge trough is provided at the bottom of the crushing trough, a first filter screen is provided between the crushing trough and the discharge trough, an elastic second filter screen is provided on the top of the slag discharge box, and a slag storage box is provided on the right side of the slag discharge box below the second filter screen, and the left end of the slag storage box is hinged to the middle of the inner wall of the slag discharge box through a movable baffle. A telescopic outer rod is provided at the bottom of the slag storage box, and a telescopic inner rod is slidably connected to the left end of the telescopic outer rod, and the left end of the telescopic inner rod is connected to the bottom of the inner wall of the slag discharge box, a slag discharge trough is provided on the right side of the bottom of the discharge trough, and a block is provided on the left side of the slag discharge trough, and the slag discharge box is slidably connected to the second slide groove provided on the side wall of the discharge trough;

[0010] The drain plate is connected to the slag discharge box through a connecting rod, and an electric push rod for driving the connecting rod to slide is provided on one side of the bottom of the connecting rod.

[0011] Furthermore, there are three double-axis crushing rollers, and there are 3 to 5 water spray heads arranged at equal intervals.

[0012] Description: By reasonably controlling the number of double-axis crushing rollers, the three processes of crushing, cleaning and drying can be carried out alternately and reasonably. By reasonably controlling the number of water spray heads, the water consumption can be minimized while ensuring maximum cleaning.

[0013] Furthermore, the two ends of the rotating shaft located inside the crushing groove are respectively provided with a first fixed rod and a second fixed rod perpendicular to the rotating shaft and corresponding to each other in position, the first fixed rod and the second fixed rod are both composed of a plurality of supporting rods distributed at equal angles, and the double-axis crushing roller is provided between each pair of supporting rods corresponding to each other in position on the first fixed rod and the second fixed rod;

[0014] A balancing block is provided at the other end of the crushing cutter head, the first fixing rod fixes and connects the motor groups, and the second fixing rod fixes and connects the balancing blocks.

[0015] Note: The balance block can maintain the stability of the crushing cutter head during crushing.

[0016] Furthermore, a drainage groove is provided in the middle of the drainage board, a limit block is provided at the end of the drainage board, and a limit groove is provided on the side wall of the crushing groove for docking with the limit block. When the limit block is engaged with the limit groove, the end of the drainage board is flush with the inner wall of the crushing groove, and at this time, the end of the slag discharge box is flush with the inner wall of the discharge groove.

[0017] Description: The drainage groove can be used to quickly drain the waste water after cleaning. The limit block and the limit groove are connected to limit the drainage plate, and the slag box can also be indirectly limited to achieve multifunctionality.

[0018] Furthermore, the pore size of the first filter is 100-120 μm, and the pore size of the second filter is 40-45 μm.

[0019] Description: By reasonably limiting the apertures of the two filters, the crushing and screening efficiency is improved, which facilitates subsequent ball milling and is also an important setting for realizing the function of the device of the present invention.

[0020] Furthermore, the movable baffle includes a first baffle located on the left and a second baffle located on the right, the first baffle and the second baffle are movably connected via a spring shaft, the length of the first baffle is 1 / 2 to 4 / 5 of the length of the second baffle, and a small door for taking out the slag storage box is provided on the front of the discharge trough.

[0021] Note: The elastic second filter net can make the blast furnace titanium slag undergo a self-filtering process during the descent process. This process will continue when the movable baffle is lifted upward. In other words, the blast furnace titanium slag undergoes two self-filtering processes in succession, which makes screening more efficient. At the same time, by reasonably limiting the length relationship between the two baffles in the movable baffle, the realization of this process is further promoted. At the same time, the height difference also facilitates the larger blast furnace titanium slag above the second filter net to fall into the slag discharge trough under the action of gravity.

[0022] The present invention also discloses a crushing and separation method for blast furnace titanium slag, based on the above-mentioned crushing and separation device for blast furnace titanium slag, comprising the following steps:

[0023] S1. Crushing preparation: Turn on the rotating motor to drive the rotating shaft to rotate, so as to rotate one of the double-shaft crushing rollers in the crushing roller group to be located directly below the inside of the crushing tank;

[0024] S2, crushing: adding the blast furnace titanium slag to be crushed into the crushing tank, turning on the motor group of the double-shaft crushing roller located just below the crushing tank, driving the two crushing cutter heads thereon to mesh and rotate, so as to realize the continuous crushing of the blast furnace titanium slag inside the crushing tank, and the crushed blast furnace titanium slag powder is screened once by the first filter screen and then falls into the discharge trough, and the blast furnace titanium slag powder falling into the discharge trough is screened twice by the second filter screen and falls into the slag storage box;

[0025] S3, cleaning and slag discharge: After the crushing is carried out for 15 to 40 minutes, the motor group is turned off, and the rotating motor is turned on to drive the rotating shaft to rotate, and the double-axis crushing roller that has completed the crushing work is rotated to the position below the water spray head. At this time, the electric push rod is turned on to drive the connecting rod to move, so that the drainage plate slides from the first chute to the bottom of the double-axis crushing roller after work, and the slag discharge box slides from the second chute to the inside of the discharge chute until the telescopic outer rod is docked with the block, and then the telescopic inner rod continues to slide into the telescopic outer rod. At the same time, the movable baffle is forced to bulge upward and lift up the second filter screen. The unscreened blast furnace titanium slag powder on the second filter screen falls into the slag discharge chute, and the water spray head is turned on to clean the surface of the double-axis crushing roller after the crushing work for 2 to 10 minutes. The cleaning water is received and discharged through the drainage plate;

[0026] S4, switching: after the cleaning is completed, the electric push rod is turned on to reset the drain plate and the slag box, and the rotating motor is turned on to drive the rotating shaft to rotate, so that the previously cleaned double-shaft crushing roller is rotated to the top side of the crushing tank for drying, and at the same time, the other double-shaft crushing roller in the crushing roller group is rotated to be located directly below the inside of the crushing tank;

[0027] S5. Circulation: Cycle the operations of S2-S4 to continuously crush and separate the blast furnace titanium slag.

[0028] Furthermore, in step S3, when the water spray head is turned on to clean the surface of the double-shaft crushing roller after operation, the motor group is turned on at the same time.

[0029] Note: The cleaning effect can be improved by turning on the motor group to rotate the double-shaft crushing roller.

[0030] The beneficial effects of the present invention are:

[0031] (1) The crushing and separation device for blast furnace titanium slag of the present invention performs two screenings on the blast furnace titanium slag, and can directly screen out the blast furnace titanium slag that meets the pickling particle size requirements. The blast furnace titanium slag that does not meet the pickling particle size requirements needs to be recycled and processed. Therefore, by setting up a special slag discharge box, it can be synchronized with the cleaning process, and a series of automated structure operations inside the slag discharge box can be completed during the cleaning process, thereby realizing the discharge of larger blast furnace titanium slag powder. The device is easy to use and can be promoted and used in the blast furnace titanium slag recycling industry.

[0032] (2) The crushing and separation device for blast furnace titanium slag of the present invention is aimed at the crushing and screening of blast furnace titanium slag. It can classify and crush blast furnace titanium slag that has been pre-pickled or blast furnace titanium slag that has not been pre-pickled. For blast furnace titanium slag that has been pre-pickled, the cleaning frequency of the crushing cutter head is appropriately increased to avoid corrosion of the crushing cutter head. For blast furnace titanium slag that has not been pre-pickled, the cleaning frequency of the crushing cutter head is appropriately reduced to keep the cutter head clean. It is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of a crushing and separation device for blast furnace titanium slag of the present invention;

[0034] Figure 2 It is a top plan view of a crushing and separation device for blast furnace titanium slag of the present invention;

[0035] Figure 3 It is a schematic diagram of the structure of a crushing roller group inside a crushing and separation device for blast furnace titanium slag of the present invention;

[0036] Figure 4 This is a front view of a crushing roller group inside a crushing and separation device for blast furnace titanium slag according to the present invention;

[0037] Figure 5 This is a front view of the overall structure of a crushing and separation device for blast furnace titanium slag of the present invention when crushing;

[0038] Figure 6 This is a front view of the overall structure of a crushing and separation device for blast furnace titanium slag during cleaning of the present invention;

[0039] Figure 7 It is a schematic diagram of the connection structure of the limiting block and the limiting groove of the drainage plate in the crushing and separation device for blast furnace titanium slag of the present invention;

[0040] Figure 8 It is a schematic diagram of the internal structure of a slag discharge box of a crushing and separation device for blast furnace titanium slag during crushing of the present invention;

[0041] Fig. 9 The present invention is a schematic diagram of the internal structure of a slag box of a crushing and separation device for blast furnace titanium slag during cleaning.

[0042] Among them, 1-crushing trough, 11-first chute, 12-first filter, 13-limiting groove, 2-crushing roller group, 21-double-axis crushing roller, 211-crushing cutter head, 22-motor group, 221-driving motor, 23-balancing block, 241-fixed rod A, 242-fixed rod B, 243-support rod, 25-rotating shaft, 26-rotating motor, 3-sprinkler head, 4-drain board, 41-drain trough, 42-limiting block, 5-slag box, 51-second filter, 52-slag storage box, 53-telescopic outer rod, 54 telescopic inner rod, 6-discharge trough, 61-second chute, 62-slag trough, 63-small door, 64-block, 7-connecting rod, 71-electric push rod, 8-movable baffle, 81-first baffle, 82-second baffle, 83-spring shaft. DETAILED DESCRIPTION

[0043] Example 1

[0044] like Figure 1 As shown, a crushing and separation device for blast furnace titanium slag comprises a crushing tank 1, a crushing roller group 2 located inside the crushing tank 1, three water spray heads 3 arranged at equal intervals above one side of the crushing tank 1 for cleaning the crushing roller group 2, a drainage board 4 is provided in the middle of the crushing tank 1 located on one side of the water spray head 3, and a slag discharge box 5 is provided below the drainage board 4;

[0045] like Figure 2 to Figure 4 As shown, the crushing roller group 2 includes a rotating shaft 25 that penetrates the side wall of the crushing tank 1, and one end of the rotating shaft 25 located outside the crushing tank 1 is connected to a rotating motor 26, and the other end of the rotating shaft 25 is rotatably connected to the side wall of the crushing tank 1, and three double-shaft crushing rollers 21 are evenly arranged along the circumference of the rotating shaft 25. The double-shaft crushing roller 21 includes two symmetrical and mutually meshing cylindrical crushing cutter heads 211, and one end of the crushing cutter head 211 is provided with a motor group 22, and the motor group 22 includes two driving motors 221 inside, and the two driving motors 221 respectively drive the two crushing cutter heads 211 to rotate in opposite directions;

[0046] The first fixed rod 241 and the second fixed rod 242 which are perpendicular to the rotating shaft 25 and have corresponding positions are respectively arranged at both ends of the rotating shaft 25 located inside the crushing tank 1. The first fixed rod 241 and the second fixed rod 242 are both composed of three supporting rods 243 distributed at equal angles. A double-axis crushing roller 21 is arranged between each pair of supporting rods 243 on the first fixed rod 241 and the second fixed rod 242.

[0047] A balance block 23 is disposed at the other end of the crushing cutter head 211, a first fixing rod 241 fixes and connects each motor group 22, and a second fixing rod 242 fixes and connects each balance block 23;

[0048] like Figures 5 to 9As shown, the plane perpendicular to the double-axis crushing roller 21 is taken as the observation plane, the plane where the bottom of the crushing trough 1 is located is the horizontal plane, the water spray head 3 is on the left side relative to the double-axis crushing roller 21, the drainage plate 4 is slidably connected with the first slide groove 11 provided on the left side wall of the crushing trough 1, a discharge trough 6 is provided at the bottom of the crushing trough 1, a first filter screen 12 is provided between the crushing trough 1 and the discharge trough 6, an elastic second filter screen 51 is provided on the top of the slag box 5, and a slag storage box 52 is provided on the right side of the slag box 5 located below the second filter screen 51, the left end of the slag storage box 52 is hinged to the middle of the inner wall of the slag box 5 through a movable baffle 8, and a telescopic outer rod 53 is provided at the bottom of the slag storage box 52, and the left end of the telescopic outer rod 53 is provided with a A telescopic inner rod 54 is slidably connected, the left end of the telescopic inner rod 54 is connected to the bottom of the inner wall of the slag box 5, a slag groove 62 is provided on the right side of the bottom of the discharge trough 6, a block 64 is provided on the left side of the slag groove 62, and the slag box 5 is slidably connected with the second slide groove 61 provided on the side wall of the discharge trough 6; the aperture of the first filter screen 12 is 110μm, the aperture of the second filter screen 51 is 42μm, the movable baffle 8 includes a first baffle 81 located on the left and a second baffle 82 located on the right, the first baffle 81 and the second baffle 82 are movably connected through a spring shaft 83, the length of the first baffle 81 is 2 / 3 of the length of the second baffle 82, and a small door 63 for taking out the slag storage box 52 is provided on the front of the discharge trough 6;

[0049] like Figure 5 and Figure 7 As shown, the drain plate 4 is connected to the slag discharge box 5 by a connecting rod 7, and an electric push rod 71 is provided on one side of the bottom of the connecting rod 7 for driving the connecting rod 7 to slide. A drainage groove 41 is provided in the middle of the drain plate 4, and the drainage groove 41 is inclined from one side of the crushing groove 1 to the opposite side. A limit block 42 is provided at the end of the drain plate 4, and a limit groove 13 is provided on the side wall of the crushing groove 1 to connect with the limit block 42. When the limit block 42 is engaged with the limit groove 13, the end of the drain plate 4 is flush with the inner wall of the crushing groove 1, and at this time, the end of the slag discharge box 5 is flush with the inner wall of the discharge groove 6.

[0050] The driving motor 221, the rotating motor 26, the electric push rod 71, and the water spray head 3 are all commercially available products;

[0051] Example 2

[0052] The difference between this embodiment and embodiment 1 is that:

[0053] There are four water spray heads 3 , the aperture of the first filter 12 is 100 μm, the aperture of the second filter 51 is 40 μm, and the length of the first baffle 81 is 1 / 2 of the length of the second baffle 82 .

[0054] Example 3

[0055] The difference between this embodiment and embodiment 1 is that:

[0056] There are five water spray heads 3 , the aperture of the first filter 12 is 120 μm, the aperture of the second filter 51 is 45 μm, and the length of the first baffle 81 is 4 / 5 of the length of the second baffle 82 .

[0057] Example 4

[0058] This embodiment provides a method for crushing and separating blast furnace titanium slag, based on a crushing and separating device for blast furnace titanium slag in Embodiment 1, comprising the following steps:

[0059] S1. Crushing preparation: Turn on the rotating motor 26 to drive the rotating shaft 25 to rotate, so as to rotate one of the double-shaft crushing rollers 21 in the crushing roller group 2 to be located directly below the inside of the crushing tank 1;

[0060] S2, crushing: add the blast furnace titanium slag to be crushed into the crushing tank 1, turn on the motor group 22 of the double-shaft crushing roller 21 located just below the crushing tank 1, drive the two crushing cutter heads 211 thereon to mesh and rotate, and realize continuous crushing of the blast furnace titanium slag inside the crushing tank 1. The crushed blast furnace titanium slag powder is screened once by the first filter screen 12 and then falls into the discharge trough 6. The blast furnace titanium slag powder falling into the discharge trough 6 is screened twice by the second filter screen 51 and falls into the slag storage box 52.

[0061] S3, cleaning and slag discharge: after the crushing is carried out for 20 minutes, the motor group 22 is turned off, and the rotating motor 26 is turned on to drive the rotating shaft 25 to rotate, and the double-shaft crushing roller 21 after the crushing work is completed is rotated to be located below the water spray head 3. At this time, the electric push rod 71 is turned on to drive the connecting rod 7 to move, so that the drainage plate 4 slides from the first chute 11 to the bottom of the double-shaft crushing roller 21 after the work, and the slag box 5 slides from the second chute 61 to the inside of the discharge chute 6 until the telescopic outer rod 53 is docked with the block 64, and then the telescopic inner rod 54 continues to slide into the telescopic outer rod 53. At the same time, the movable baffle 8 bulges upward after being stressed, and lifts up the second filter screen 51. The unscreened blast furnace titanium slag powder on the second filter screen 51 falls into the slag discharge chute 62, and the water spray head 3 is turned on to clean the surface of the double-shaft crushing roller 21 after the crushing work for 8 minutes. The cleaning water is received and discharged by the drainage plate 4. When the water spray head 3 is turned on to clean the surface of the double-shaft crushing roller 21 after the work, the motor group 22 is turned on at the same time;

[0062] S4, switching: after the cleaning is completed, the electric push rod 71 is turned on to reset the drain plate 4 and the slag box 5, and the rotating motor 26 is turned on to drive the rotating shaft 25 to rotate, so that the previously cleaned double-shaft crushing roller 21 is rotated to the top side of the crushing tank 1 for drying, and at the same time, the other double-shaft crushing roller 21 in the crushing roller group 2 is rotated to be located directly below the inside of the crushing tank 1;

[0063] S5. Circulation: Cycle the operations of S2-S4 to continuously crush and separate the blast furnace titanium slag.

[0064] Example 5

[0065] The difference between this embodiment and embodiment 4 is that:

[0066] After the crushing in S3 is performed for 40 minutes, the motor group 22 is turned off for subsequent operations;

[0067] The water spray head 3 is turned on to clean the surface of the double-shaft crushing roller 21 after operation for 2 minutes.

[0068] Example 6

[0069] The difference between this embodiment and embodiment 4 is that:

[0070] After the crushing in S3 is carried out for 15 minutes, the motor group 22 is turned off for subsequent operations;

[0071] The water spray head 3 is turned on to clean the surface of the double-shaft crushing roller 21 after operation for 10 minutes.

[0072] Note: The crushing time is related to the source of the blast furnace titanium slag. If the blast furnace titanium slag has been pre-pickled, the time of each crushing should be reduced, the cleaning frequency should be increased, and the cleaning time should be extended, such as Example 6; if the blast furnace titanium slag has not been pre-pickled, the time of each crushing should be increased, the cleaning frequency should be reduced, and the cleaning time can be appropriately reduced. At the same time, the blast furnace titanium slag will hardly corrode the crushing cutter head 211 at this time, and it only needs to be cleaned and cleaned regularly to maintain its crushing efficiency, such as Example 5; it can also be appropriately adjusted according to the actual crushing situation, such as Example 4.

[0073] The working principle of some structures in the device of the present invention is supplemented below in combination with the method of the present invention.

[0074] First, the fixed position of the water spray head 3 is fixedly arranged on a wall or a column close to the device of the present invention. The water spray heads 3 at both ends correspond to the two ends of the crushing cutter head 211 that need to be cleaned, respectively, to ensure that the entire crushing cutter head 211 can be cleaned in place, and the distance between the water spray head 3 and the crushing cutter head 211 is kept moderate, to avoid water flow entering the crushing tank 1 when the distance is too close, or water pressure is insufficient when the distance is too far, resulting in water waste;

[0075] When the second filter screen 51 receives the blast furnace titanium slag, due to its elasticity, it can make the blast furnace titanium slag gradually flow from both sides to the middle during the descent process. This process is equivalent to an autonomous filtering process, filtering the smaller sized blast furnace titanium slag into the slag storage box 52 for collection; and in the process where the movable baffle plate 8 bulges upward after being stressed and lifts up the second filter screen 51, due to the different lengths of the first baffle plate 81 and the second baffle plate 82, the force point for lifting up the second filter screen 51 is closer to the left, resulting in an inclination, so that the larger sized blast furnace titanium slag powder on the second filter screen 51 falls into the slag discharge trough 62 under the action of gravity, and in this process, the smaller sized blast furnace titanium slag is filtered into the slag storage box 52, that is to say, the blast furnace titanium slag is autonomously filtered twice in succession, and screening is more efficient;

[0076] At the same time, when the slag box 5 is reset, the electric push rod 71 is turned on to drive the connecting rod 7 to move, so that the drain plate 4 and the slag box 5 are reset synchronously. When the limit block 42 contacts the limit groove 13, the slag box 5 also returns to the initial position. This is because the spring shaft 83 generates a rebound force, and the first baffle plate 81 and the second baffle plate 82 are opened to reset first, and then the telescopic inner rod 54 is pulled out from the telescopic outer rod 53 to achieve reset.

[0077] The slag storage box 52 includes two layers that are slidably mounted up and down. When the small-sized blast furnace titanium slag needs to be taken out, the small door 63 is opened and the upper layer is slid out. The small door 63 can be a commercially available electronic door or a hand-pull door.

Claims

1. A crushing and separation device for blast furnace titanium slag, characterized in that: The invention comprises a crushing trough (1), a crushing roller group (2) located inside the crushing trough (1), a plurality of water spray heads (3) for cleaning the crushing roller group (2) are arranged above one side of the crushing trough (1), a drainage board (4) is arranged in the middle of the crushing trough (1) on one side of the water spray head (3), and a slag discharge box (5) is arranged below the drainage board (4); The crushing roller group (2) comprises a rotating shaft (25) penetrating the side wall of the crushing groove (1); one end of the rotating shaft (25) located outside the crushing groove (1) is connected to a rotating motor (26); the other end of the rotating shaft (25) is rotatably connected to the side wall of the crushing groove (1); a plurality of double-shaft crushing rollers (21) are evenly arranged along the circumference of the rotating shaft (25); the double-shaft crushing rollers (21) comprise two symmetrical and mutually meshing cylindrical crushing blades (211); one end of the crushing blade (211) is provided with a motor group (22); the motor group (22) comprises two driving motors (221) inside; the two driving motors (221) respectively drive the two crushing blades (211) to rotate in opposite directions; The drainage plate (4) is slidably connected to a first slide groove (11) provided on the left side wall of the crushing trough (1); a discharge trough (6) is provided at the bottom of the crushing trough (1); a first filter screen (12) is provided between the crushing trough (1) and the discharge trough (6); a second elastic filter screen (51) is provided at the top of the slag discharge box (5); a slag storage box (52) is provided on the right side of the slag discharge box (5) located below the second filter screen (51); the left end of the slag storage box (52) is connected to the left side wall of the crushing trough (1) through a movable baffle (8). The middle part of the inner wall of the slag discharge box (5) is hinged, a telescopic outer rod (53) is provided at the bottom of the slag storage box (52), a telescopic inner rod (54) slidably connected to the telescopic outer rod (53) is provided at the left end, the left end of the telescopic inner rod (54) is connected to the bottom of the inner wall of the slag discharge box (5), a slag discharge groove (62) is provided on the right side of the bottom of the discharge trough (6), a clamping block (64) is provided on the left side of the slag discharge groove (62), and the slag discharge box (5) is slidably connected to a second sliding groove (61) provided on the side wall of the discharge trough (6); The drainage plate (4) is connected to the slag discharge box (5) via a connecting rod (7), and an electric push rod (71) for driving the connecting rod (7) to slide is provided on one side of the bottom of the connecting rod (7).

2. The crushing and separation device for blast furnace titanium slag according to claim 1, characterized in that: There are three double-shaft crushing rollers (21), and there are 3 to 5 water spray heads (3) arranged at equal intervals.

3. The crushing and separation device for blast furnace titanium slag according to claim 1, characterized in that: A first fixed rod (241) and a second fixed rod (242) perpendicular to the rotating shaft (25) and corresponding to each other are respectively arranged at two ends of the rotating shaft (25) located inside the crushing groove (1); the first fixed rod (241) and the second fixed rod (242) are both composed of a plurality of supporting rods (243) distributed at equal angles; and the double-axis crushing roller (21) is arranged between each pair of supporting rods (243) corresponding to each other on the first fixed rod (241) and the second fixed rod (242); A balancing block (23) is provided at the other end of the crushing cutter head (211); the first fixing rod (241) fixedly connects each of the motor groups (22); and the second fixing rod (242) fixedly connects each of the balancing blocks (23).

4. The crushing and separation device for blast furnace titanium slag according to claim 1, characterized in that: A drainage groove (41) is provided in the middle of the drainage plate (4), a limiting block (42) is provided at the end of the drainage plate (4), and a limiting groove (13) is provided on the side wall of the crushing groove (1) to connect with the limiting block (42). When the limiting block (42) is engaged with the limiting groove (13), the end of the drainage plate (4) is flush with the inner wall of the crushing groove (1), and at this time, the end of the slag discharge box (5) is flush with the inner wall of the discharge groove (6).

5. The crushing and separation device for blast furnace titanium slag according to claim 1, characterized in that: The pore size of the first filter screen (12) is 100-120 μm, and the pore size of the second filter screen (51) is 40-45 μm.

6. The crushing and separation device for blast furnace titanium slag according to claim 1, characterized in that: The movable baffle (8) comprises a first baffle (81) located on the left side and a second baffle (82) located on the right side. The first baffle (81) and the second baffle (82) are movably connected via a spring shaft (83). The length of the first baffle (81) is 1 / 2 to 4 / 5 of the length of the second baffle (82). A small door (63) for taking out the slag storage box (52) is provided on the front side of the discharge trough (6).

7. A crushing and separation method for blast furnace titanium slag, based on a crushing and separation device for blast furnace titanium slag according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. Crushing preparation: Turn on the rotating motor (26) to drive the rotating shaft (25) to rotate, thereby rotating one of the double-shaft crushing rollers (21) in the crushing roller group (2) to be located directly below the inside of the crushing tank (1); S2, crushing: adding the blast furnace titanium slag to be crushed into the crushing tank (1), turning on the motor group (22) of the double-shaft crushing roller (21) located directly below the crushing tank (1), driving the two crushing cutter heads (211) thereon to mesh and rotate, thereby achieving continuous crushing of the blast furnace titanium slag inside the crushing tank (1), the crushed blast furnace titanium slag powder is screened once by the first filter screen (12) and then falls into the discharge tank (6), the blast furnace titanium slag powder that falls into the discharge tank (6) is screened twice by the second filter screen (51) and falls into the slag storage box (52); S3, cleaning and slag discharge: After the crushing is carried out for 15 to 40 minutes, the motor group (22) is turned off, and the rotating motor (26) is turned on to drive the rotating shaft (25) to rotate, so that the double-shaft crushing roller (21) after the crushing work is completed is rotated to be located below the water spray head (3). At this time, the electric push rod (71) is turned on to drive the connecting rod (7) to move, so that the drainage plate (4) slides from the first chute (11) to the bottom of the double-shaft crushing roller (21) after the work, and at the same time, the slag discharge box (5) slides from the second chute (61) to the discharge chute ( 6) inside, until the telescopic outer rod (53) is docked with the block (64), then the telescopic inner rod (54) continues to slide into the telescopic outer rod (53), and at the same time, the movable baffle (8) is forced to bulge upward and lift up the second filter screen (51), and the unscreened blast furnace titanium slag powder on the second filter screen (51) falls into the slag discharge trough (62), and the water spray head (3) is turned on to clean the surface of the double-axis crushing roller (21) after the crushing work is completed for 2 to 10 minutes, and the cleaning water is received and discharged through the drainage plate (4); S4, switching: after the cleaning is completed, the electric push rod (71) is turned on to reset the drain plate (4) and the slag box (5), and the rotating motor (26) is turned on to drive the rotating shaft (25) to rotate, so that the previously cleaned double-shaft crushing roller (21) is rotated to the top side of the crushing tank (1) for drying, and at the same time, the other double-shaft crushing roller (21) in the crushing roller group (2) is rotated to be located directly below the inside of the crushing tank (1); S5. Circulation: Cycle the operations of S2-S4 to continuously crush and separate the blast furnace titanium slag.

8. A method for crushing and separating blast furnace titanium slag according to claim 7, characterized in that: In the step S3, when the water spray head (3) is turned on to clean the surface of the double-shaft crushing roller (21) after operation, the motor group (22) is turned on at the same time.

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