Uniform crushing equipment for crude tungstic acid mixture

Abstract

The utility model relates to the field of crushing devices, in particular to uniform crushing equipment for a crude tungstic acid mixture. Comprising a spin-drying assembly which is obliquely mounted on a rack and is high in left and low in right, a first driving assembly used for driving the spin-drying assembly, a crushing assembly used for crushing materials spin-dried by the spin-drying assembly, and a second driving assembly used for driving the crushing assembly to operate. The spin-drying assembly is firstly utilized, moisture on the surface of a solid material is reduced, and therefore tungsten loss and environmental pollution are reduced; the spin-drying assembly is obliquely arranged in a left-high and right-low manner, so that the spin-drying assembly can continuously feed from the left side and continuously discharge from the right side in the spin-drying process, and the production continuity is improved; and finally, continuous two-time crushing of the crude tungstic acid mixture is achieved through the two stages of crushing assemblies, so that the crushing efficiency and uniformity are improved, the crude tungstic acid mixture can be fully crushed, the contact area between the crude tungstic acid mixture and a coordination agent is increased, and the utilization rate of resources is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of crushing device, concretely relates to a coarse tungsten acid mixture uniform crushing equipment. BACKGROUND

[0002] Tungsten, as an important industrial metal, is widely used in hard alloy, electronics and chemical industry and other fields. However, the traditional tungsten hydrometallurgy technology is criticized for high energy consumption and environmental pollution. With the improvement of environmental awareness and the transformation of the industry to green production, green coordination ammonia-free smelting technology emerges as the times require, marking a major innovation in tungsten smelting process. This technology avoids the use of harmful substances to the environment such as ammonia, not only reduces the burden on the environment, but also improves the utilization efficiency of resources.

[0003] Under such background, we developed an ammonia-free tungsten smelting process. The process first uses acid to wash and dissolve scheelite, then through coordination leaching, after steps such as pressure filtration and washing, finally gets coarse tungsten acid solution. After removing molybdenum by recompounding extraction, pure tungsten acid solution is obtained, which is further precipitated, filtered and centrifuged to obtain powder-like tungsten acid, and finally tungsten trioxide is obtained by drying and calcining. However, there are problems of serious volatilization and difficult treatment of Cl- containing waste liquid when hydrochloric acid is used to treat scheelite, and nitric acid has poor adaptability to raw materials, resulting in the formation of heteropoly acid in the solution by impurities such as P, As and Si in the mineral and tungsten, causing loss of tungsten. Therefore, we use sulfuric acid to decompose scheelite to obtain coarse tungsten acid mixture (a mixture of tungsten acid and calcium sulfate in solid form). Subsequently, tungsten acid is displaced from the coarse tungsten acid mixture by using green coordination process. In order to realize this process, the coarse tungsten acid mixture needs to be fully crushed to ensure sufficient contact between tungsten acid and coordination agent, and the crushing effect is directly related to the dissolution efficiency and impurity removal effect of the mixture.

[0004] Because the surface of the coarse tungsten acid mixture obtained after the decomposition of scheelite by sulfuric acid will be left with solution, if removed, it will increase the equipment demand or reduce the process efficiency; if directly crushed, due to the high moisture of the material, it will affect the stability and reliability of the crushing equipment, causing part of the material to be crushed incompletely, affecting the subsequent coordination process. In order to solve this problem, we plan to develop a new type of uniform crushing equipment specially used for processing the coarse tungsten acid mixture in this process, to improve the process efficiency and crushing uniformity, reduce tungsten loss and environmental pollution, and at the same time reduce energy consumption and maintenance cost. SUMMARY

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a coarse tungsten acid mixture uniform crushing equipment, so as to uniformly and efficiently crush the coarse tungsten acid mixture in the applicant's green coordination ammonia-free tungsten smelting process without increasing the equipment.

[0006] In order to solve the above technical problems, the utility model discloses a kind of coarse tungsten acid mixture uniform crushing equipment, including:

[0007] Frame;

[0008] Spin-dry assembly, left high right low inclination is installed on frame, including shell, both sides in shell are equipped with rotating bearing, rotating bearing inner sleeve is equipped with spin-dry cylinder, spin-dry cylinder is located between two rotating bearings Part is opened with filter hole, spin-dry cylinder left side is equipped with feed hopper for feeding, spin-dry cylinder right side is equipped with solid discharge port of material after spin-drying is discharged;

[0009] First drive assembly, it is installed on the frame of one side of spin-dry assembly, for driving spin-dry cylinder rotation;

[0010] Crushing assembly, it is located at the right side of spin-dry assembly, and is connected with solid discharge port, for crushing the material after spin-dry assembly spin-drying;

[0011] Second drive assembly, it is located at one side of crushing assembly, for driving crushing assembly to run.

[0012] As some embodiments of the application, the right end of the shell is provided with an end cover, and the feed hopper is fixed to the upper end of the end cover;Liquid discharge port is opened in the right side lower end of the shell, for collecting the liquid spun out.

[0013] As some embodiments of the application, the frame includes an inclined table, which is arranged left high right low, and the inclined table is provided with a spin-dry mounting rack, a crushing mounting rack is arranged on the right side of the inclined table, and a mounting seat is arranged on the right side of the crushing mounting rack;The shell is mounted on the spin-dry mounting rack.

[0014] As some embodiments of the application, the first drive assembly includes a first power component, a first pulley, a first belt and a second pulley, the first power component is installed on the inclined table, the output end of the first power component is provided with the first pulley, the second pulley is sleeved on the left end of the spin-dry cylinder, and the first pulley and the second pulley are connected by the first belt.

[0015] As a preferred embodiment of the application, the first belt is a V-shaped belt, and the first power component is a motor.

[0016] As some embodiments of the application, the crushing assembly includes a first crushing component, a second crushing component, an impact plate and a machine shell, the first crushing component is arranged below the right side of the solid discharge port, the second crushing component is arranged below the right side of the first crushing component, the impact plate is arranged on the outer periphery of the first crushing component and the second crushing component, and the machine shell is arranged on the outer side of the impact plate;The first crushing component and the second crushing component are rotatably installed on the crushing mounting rack.

[0017] As some embodiments of the application, the first and second crushing pieces are hammer crushers, and the specific structure is that a rotating shaft is horizontally arranged in the front-rear direction, a plurality of mounting discs are uniformly and spacedly arranged on the rotating shaft, a plurality of hammer shafts are arranged through the outer periphery of the mounting discs in the front-rear direction, and a crushing hammer is rotatably arranged on the hammer shaft between adjacent mounting discs.

[0018] As a preferred embodiment of some embodiments of the application, the mounting disc is provided with five mounting discs, and the hammer shaft is provided with four hammer shafts.

[0019] As some embodiments of the application, the crushing mounting frame is arranged on both sides of the crushing assembly, and the upper end is provided with four bearing seats, and the four bearing seats are respectively sleeved on the front and rear ends of the first and second crushing piece rotating shafts.

[0020] As some embodiments of the application, the second driving assembly includes a second power piece, a third pulley, a second belt, and a fourth pulley. The second power piece is mounted on the mounting seat, the output end of the second power piece is provided with the third pulley, the fourth pulley is sleeved on the front end of the first crushing piece rotating shaft, and the third pulley and the fourth pulley are drivingly connected through the second belt. The fifth pulley is sleeved on the rear end of the first crushing piece rotating shaft, the sixth pulley is sleeved on the rear end of the second crushing piece rotating shaft, and the fifth pulley and the sixth pulley are drivingly connected through the third belt.

[0021] As a preferred embodiment of some embodiments of the application, the second belt is a V-shaped belt, and the third belt is a flat belt; and the second power piece is a motor.

[0022] As some embodiments of the application, the impact plate is provided with a feeding port on the left upper portion, and a discharging port on the right lower portion of the impact plate; and the machine shell includes a lower machine shell and a detachable upper machine shell.

[0023] As a preferred embodiment of some embodiments of the application, the solid discharging port is provided with a guide plate at the right end, for guiding the material after spinning to fall into the first crushing piece from the feeding port.

[0024] Compared with the prior art, the application has the following beneficial effects:

[0025] 1. Improve the crushing efficiency and uniformity: first, use the spinning assembly to reduce the moisture on the surface of the solid material, reduce the problem of reducing the stability and reliability of the crushing equipment caused by high humidity, thereby reducing the loss of tungsten and environmental pollution; second, the spinning assembly is inclined from left high to right low, so that the spinning assembly can continuously feed from the left and continuously discharge from the right during the spinning process, without batch feeding; the coarsely tungsten acid mixture after discharging can enter the crushing assembly automatically, improving the continuity of production; finally, through the two-stage crushing assembly, the coarsely tungsten acid mixture is crushed twice continuously, thereby improving the crushing efficiency and uniformity, so that the coarsely tungsten acid mixture can be fully crushed, thereby increasing the contact area with the complexing agent and increasing the utilization rate of resources.

[0026] 2. Reduce energy consumption and maintenance cost: The arrangement of the first drive assembly and the second drive assembly makes the power transmission of the device more efficient, reducing energy consumption, and the detachable upper machine shell design facilitates maintenance, reducing maintenance cost.

[0027] 3. Simplify process flow: The device integrates the spinning and crushing process steps, eliminating the need for additional drying steps, directly crushing, simplifying the process flow, reducing the need for additional equipment, saving space and cost, and improving process adaptability. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0029] Fig. 1 is a three-dimensional structural schematic diagram of the embodiment of the present application;

[0030] Fig. 2 is a three-dimensional structural schematic diagram of another perspective of the embodiment of the present application;

[0031] Fig. 3 is a cross-sectional three-dimensional structural schematic diagram of the spinning assembly of the embodiment of the present application;

[0032] Fig. 4 is an internal three-dimensional structural schematic diagram of the crushing assembly of the embodiment of the present application;

[0033] Fig. 5 is an internal connection structural schematic diagram of the crushing assembly of the embodiment of the present application;

[0034] Fig. 6 is an exploded three-dimensional structural schematic diagram of the embodiment of the present application.

[0035] The marks in the drawings are: 1, rack; 11, inclined table; 12, spin installation frame; 13, crushing installation frame; 131, bearing seat; 14, mounting seat; 2, spin assembly; 21, feed hopper; 22, spin drum; 23, rotating bearing; 24, shell; 241, liquid discharge port; 25, end cover; 26, solid discharge port; 261, guide plate; 3, first driving assembly; 31, first power piece; 32, first pulley; 33, first belt; 34, second pulley; 4, crushing assembly; 41, first crushing piece; 42, second crushing piece; 43, impact plate; 431, feed port; 432, discharge port; 44, machine shell; 441, upper machine shell; 442, lower machine shell; 4a, rotating shaft; 4b, mounting disc; 4c, hammer shaft; 4d, breaking hammer; 4e, fifth pulley; 4f, sixth pulley; 4g, third belt; 5, second driving assembly; 51, second power piece; 52, third pulley; 53, second belt; 54, fourth pulley. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the technical solutions in the specific embodiments of the utility model are described clearly and completely below to further illustrate the utility model. Obviously, the described specific embodiments are only part of the embodiments of the utility model, not all.

[0037] A kind of coarse tungsten acid mixture uniform crushing equipment, as shown in Fig. Figs. 1-6 It includes:

[0038] Rack 1 includes inclined table 11, which is arranged from high left to low right. Inclined table 11 is provided with spin installation frame 12. Inclined table 11 is provided with crushing installation frame 13 on the right side. Crushing installation frame 13 is provided with mounting seat 14 on the right side.

[0039] Spin assembly 2 is installed on rack 1 from high left to low right. It includes shell 24 arranged on spin installation frame 12. Rotating bearing 23 is arranged in the left and right sides of shell 24. Spin drum 22 is arranged in rotating bearing 23. The part of spin drum 22 between the two rotating bearings 23 is provided with filter holes. Feed hopper 21 is arranged on the left side of spin drum 22 for feeding. Solid discharge port 26 is arranged on the right side of spin drum 22 for discharging materials after spinning. Guide plate 261 is arranged on the right end of solid discharge port 26 for guiding materials after spinning to fall into first crushing piece 41 from feed port 431. End cover 25 is arranged on the right end of shell 24. Feed hopper 21 is fixed on the upper end of end cover 25. Liquid discharge port 241 is arranged on the right side of shell 24 for collecting liquid after spinning.

[0040] The first driving assembly 3 is installed on the rack 1 on one side of the spin-drying assembly 2 and is used to drive the spin-drying drum 22 to rotate; the first driving assembly 3 comprises a first power member 31, a first pulley 32, a first belt 33 and a second pulley 34, the first power member 31 is installed on the inclined table 11, the output end of the first power member 31 is provided with the first pulley 32, the second pulley 34 is sleeved on the left end of the spin-drying drum 22, and the first pulley 32 and the second pulley 34 are transmissionally connected through the first belt 33.

[0041] The crushing assembly 4 is arranged on the right side of the spin-drying assembly 2 and is in butt joint with the solid discharge port 26 and is used to crush the material after being spun-dried by the spin-drying assembly 2; the crushing assembly 4 comprises a first crushing member 41, a second crushing member 42, an impact plate 43 and a machine shell 44, the first crushing member 41 is arranged below the right side of the solid discharge port 26, the second crushing member 42 is arranged below the right side of the first crushing member 41, the impact plate 43 is arranged on the outer periphery of the first crushing member 41 and the second crushing member 42, and the machine shell 44 is arranged on the outer side of the impact plate 43; the first crushing member 41 and the second crushing member 42 are rotationally installed on the crushing mounting frame 13; the impact plate 43 is provided with an inlet 431 on the upper left side, and the impact plate 43 is provided with an outlet 432 on the lower right side; of course, a screen can also be arranged at the outlet 432 when necessary.

[0042] The second driving assembly 5 is arranged on one side of the crushing assembly 4 and is used to drive the crushing assembly 4 to operate; the second driving assembly 5 comprises a second power member 51, a third pulley 52, a second belt 53 and a fourth pulley 54, the second power member 51 is installed on the mounting seat 14, the output end of the second power member 51 is provided with the third pulley 52, the fourth pulley 54 is sleeved on the front end of the rotating shaft 4a of the first crushing member 41, and the third pulley 52 and the fourth pulley 54 are transmissionally connected through the second belt 53; the fifth pulley 4e is sleeved on the rear end of the rotating shaft 4a of the first crushing member 41, the sixth pulley 4f is sleeved on the rear end of the rotating shaft 4a of the second crushing member 42, and the fifth pulley 4e and the sixth pulley 4f are transmissionally connected through the third belt 4g.

[0043] In the embodiment, the first crushing member 41 and the second crushing member 42 are both hammer crushers, and the structure is that the rotating shaft 4a is horizontally arranged in the front-rear direction, five mounting discs 4b are uniformly and interval arranged on the rotating shaft 4a, four hammer shafts 4c are uniformly and interval arranged through the mounting discs 4b in the front-rear direction, and a crushing hammer 4d is rotationally arranged on the hammer shaft 4c between adjacent mounting discs 4b.

[0044] In order to ensure the stability of the crushing structure, the crushing mounting frame 13 is arranged on both sides of the crushing assembly 4, and the upper end is provided with four bearing seats 131, and the four bearing seats 131 are respectively sleeved on the front-rear two ends of the rotating shaft 4a of the first crushing member 41 and the rotating shaft 4a of the second crushing member 42.

[0045] In the embodiment, the first and second belts are V-shaped belts, and the third belt is a flat belt.

[0046] The shell 44 comprises a lower shell 442 and a detachable upper shell 441, facilitating disassembly for maintenance.

[0047] When the coarse tungsten acid mixture (a mixed solid of tungstic acid and calcium sulfate) filtered out is to be crushed during decomposition of scheelite with sulfuric acid, the first power element 31 and the second power element 51 are started first, the first power element 31 drives the spin-drying drum 22 to rotate through the first pulley 32, the first belt 33 and the second pulley 34, the second power element 51 drives the second crushing element 42 to rotate through the third pulley 52, the second belt 53 and the fourth pulley 54, and the second crushing element 42 drives the first crushing element 41 to rotate through the fifth pulley 4e, the sixth pulley 4f and the third belt 4g. After the coarse tungsten acid mixture with liquid on the surface is added into the feeding hopper 21, the coarse tungsten acid mixture falls onto the inner wall of the spin-drying drum 22 first, and then moves circumferentially under the driving of the spin-drying drum 22 to realize spin-drying, since the spin-drying drum 22 is arranged with the left side higher than the right side, the coarse tungsten acid mixture moves slowly to the right and downward under the action of gravity while circumferentially moving with the spin-drying drum 22, and finally falls from the solid discharging port 26, the coarse tungsten acid mixture falling from the discharging port 26 has been spin-dried circumferentially in the spin-drying drum 22 and thus will not affect the crushing process. Then the coarse tungsten acid mixture is guided to the movement track of the crushing hammer 4d of the first crushing element 41 by the guide plate 261, and the coarse tungsten acid mixture is crushed by the inertial hitting of the crushing hammer 4d and the rebounding action of the impact plate 43, under the hitting of the crushing hammer 4d of the first crushing element 41, the coarse tungsten acid mixture tends to move to the direction of the second crushing element 42 as a whole, and enters the movement track of the crushing hammer 4d of the second crushing element 42 to be crushed for the second time; after the two-stage crushing, the particle size of the coarse tungsten acid mixture has reached the requirement of subsequent green coordination, and finally falls from the discharging port 432. The liquid spun out by the spin-drying drum 22 flows out from the liquid discharging port 241 under the collection of the outer shell 24, and can be reused or discharged after treatment.

[0048] The above describes the main technical features and basic principles and related advantages of the present application, for those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary specific embodiments, and can be realized in other specific forms without departing from the concept or basic characteristics of the present application. Therefore, from any point of view, the above specific embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

[0049] In addition, it should be understood that, although the present specification is described in terms of various embodiments, not every embodiment need necessarily include every independent technical solution, and the present specification is described in this manner only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A uniform crushing device for crude tungstic acid mixture, characterized in that, include: Rack (1); The spin-drying assembly (2) is installed on the frame (1) with the left side higher than the right side. It includes a housing (24). Rotary bearings (23) are provided on both the left and right sides of the housing (24). A spin-drying roller (22) is fitted inside the rotating bearings (23). The part of the spin-drying roller (22) between the two rotating bearings (23) has filter holes. A feed hopper (21) for feeding is provided on the left side of the spin-drying roller (22), and a solid discharge port (26) for discharging the material after spin-drying is provided on the right side. The first drive assembly (3) is mounted on the frame (1) on one side of the spin-drying assembly (2) and is used to drive the spin-drying drum (22) to rotate. The crushing component (4) is located on the right side of the spun-drying component (2) and is connected to the solid feed port (26) for crushing the material after spun-drying by the spun-drying component (2); The second drive component (5) is located on one side of the crushing component (4) and is used to drive the crushing component (4) to run.

2. The uniform crushing equipment for crude tungstate mixture according to claim 1, characterized in that, The outer shell (24) has an end cap (25) on the right end, and the feed hopper (21) is fixed to the upper end of the end cap (25); the lower right end of the outer shell (24) has a liquid discharge port (241) for collecting the ejected liquid.

3. The uniform crushing equipment for crude tungstate mixture according to claim 1, characterized in that, The frame (1) includes an inclined platform (11), which is set with the left side higher than the right side. A spin-drying mounting frame (12) is provided on the inclined platform (11), and a crushing mounting frame (13) is provided on the right side of the inclined platform (11). A mounting seat (14) is provided on the right side of the crushing mounting frame (13). The outer shell (24) is set on the spin-drying mounting frame (12).

4. The uniform crushing equipment for crude tungstate mixture according to claim 3, characterized in that, The first drive assembly (3) includes a first power component (31), a first pulley (32), a first belt (33), and a second pulley (34). The first power component (31) is mounted on the inclined platform (11). The output end of the first power component (31) is equipped with the first pulley (32). The second pulley (34) is fitted onto the left end of the spin-drying drum (22). The first pulley (32) and the second pulley (34) are connected by the first belt (33).

5. The uniform crushing equipment for crude tungstate mixture according to claim 3, characterized in that, The crushing assembly (4) includes a first crusher (41), a second crusher (42), an impact plate (43), and a housing (44). The first crusher (41) is located on the lower right side of the solid feed port (26), and the second crusher (42) is located on the lower right side of the first crusher (41). The impact plate (43) is located on the outer periphery of the first crusher (41) and the second crusher (42), and the housing (44) is located on the outer side of the impact plate (43). The first crusher (41) and the second crusher (42) are both rotatably mounted on the crushing mounting frame (13).

6. The uniform crushing equipment for crude tungstate mixture according to claim 5, characterized in that, The first crushing component (41) and the second crushing component (42) are structured as follows: a rotating shaft (4a) is horizontally arranged in the front-to-back direction, a number of mounting discs (4b) are evenly spaced on the rotating shaft (4a), a number of hammer shafts (4c) are arranged through the outer periphery of the mounting discs (4b), and a breaker hammer (4d) can be rotatably arranged on the hammer shafts (4c) between adjacent mounting discs (4b).

7. The uniform crushing equipment for crude tungstate mixture according to claim 6, characterized in that, The crushing mounting bracket (13) is located on both sides of the crushing assembly (4), and four bearing seats (131) are provided at the upper end. The four bearing seats (131) are respectively fitted on the front and rear ends of the first crushing component (41) shaft (4a) and the second crushing component (42) shaft (4a).

8. The uniform crushing equipment for crude tungstate mixture according to claim 7, characterized in that, The second drive assembly (5) includes a second power component (51), a third pulley (52), a second belt (53), and a fourth pulley (54). The second power component (51) is mounted on the mounting base (14). The output end of the second power component (51) is equipped with the third pulley (52). The fourth pulley (54) is fitted onto the front end of the shaft (4a) of the first crusher (41). The third pulley (52) and the fourth pulley (54) are connected by a second belt (53). The rear end of the shaft (4a) of the first crusher (41) is fitted with a fifth pulley (4e). The rear end of the shaft (4a) of the second crusher (42) is fitted with a sixth pulley (4f). The fifth pulley (4e) and the sixth pulley (4f) are connected by a third belt (4g).

9. The uniform crushing equipment for crude tungstate mixture according to claim 5, characterized in that, The impact plate (43) has a feed inlet (431) on the upper left side and a discharge outlet (432) on the lower right side; the housing (44) includes a lower housing (442) and a detachable upper housing (441).

10. The uniform crushing equipment for crude tungstate mixture according to claim 9, characterized in that, A guide plate (261) is provided at the right end of the solid discharge port (26) to guide the dried material from the feed port (431) into the first crusher (41).

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