Mixing and stirring device for titanium gypsum production

Abstract

The invention discloses a mixing and stirring device for titanium gypsum production, and relates to the technical field of titanium gypsum preparation, in particular to the mixing and stirring device for titanium gypsum production. Limestone powder is used as a neutralizer, a titanium dioxide iron-containing waste acid neutralization process is regulated and controlled, and a titanium gypsum crystallization process is optimized, so that dihydrate gypsum with a relatively high additional value is obtained to be used as a building material. Limestone powder is added into a titanium dioxide waste acid solution by several times by adopting a fractional crystallization method, so that the practical problems of calcium sulfate wrapping and too low calcium sulfate dihydrate content caused by one-time addition of the limestone powder are solved.

Description

Technical Field

[0001] The invention specifically relates to the technical field of titanium gypsum preparation, in particular to a mixing and stirring device for titanium gypsum production. Background Art

[0002] The sulfuric acid method for producing titanium dioxide has many advantages, such as a complete and mature technical route and simple and convenient experimental operation. This method is widely used by most titanium dioxide production companies at home and abroad.

[0003] However, if the large amount of waste acid generated during the production of titanium dioxide by the sulfuric acid method is directly discharged without proper treatment, it will have irreversible impacts on water bodies and the ecological environment, and will also waste reusable resources.

[0004] The large amount of waste acid generated during the production of titanium dioxide by sulfuric acid is mainly divided into waste acid with a content of 20% and waste acid with a content of 2%. Every 1t of titanium dioxide requires 4t of pure sulfuric acid, of which nearly 7t of waste acid is discharged at a concentration of about 20%. The waste acid discharged at a concentration of about 2% is basically discharged by direct neutralization, and the generated by-product gypsum and a small amount of Fe(OH)3 precipitation are sent to the sludge dump. The by-product gypsum produced in this way cannot be used normally as a building material due to its high iron and water content. At the same time, the stacking of these by-product gypsum solid wastes will greatly waste my country's land resources.

[0005] Su Nianying (Su Nianying, Li Xuanhai, Lu Yuxi, et al. Mechanically activated limestone powder to treat titanium dioxide waste acid to prepare cement gypsum [J]. Nonferrous Metals (Smelting Part), 2018 (11): 80-83.) Although the content of calcium sulfate dihydrate obtained by using mechanically activated limestone powder to treat titanium dioxide waste acid meets the mineral composition requirements of cement gypsum in GB / T21371-2008 "Standard for Industrial By-product Gypsum Used in Cement", part of the generated calcium sulfate will cover the surface of the unreacted limestone powder, making the reaction unable to continue, and the purpose of completely treating titanium dioxide waste acid is not achieved. Therefore, the content of calcium sulfate dihydrate obtained is still somewhat different from the theoretical content; at the same time, mechanically activated limestone powder will also increase energy consumption, resulting in increased production costs. Further research is needed for the large-scale promotion of this method.

[0006] Therefore, in order to achieve sustainable development of titanium dioxide production enterprises using the sulfuric acid method and to make full use of titanium gypsum and reduce floor space, it is urgent to regulate the titanium dioxide waste acid neutralization process and optimize the titanium gypsum crystallization process. Summary of the invention

[0007] The purpose of the present invention is to provide a mixing and stirring device for titanium gypsum production, using limestone powder as a neutralizing agent, regulating the neutralization process of titanium dioxide iron-containing waste acid, and optimizing the titanium gypsum crystallization process, so as to obtain dihydrate gypsum with high added value for use as a building material. The limestone powder is added to the titanium dioxide waste acid solution in batches by a step-by-step crystallization method, solving the practical problem of calcium sulfate encapsulation and too low content of dihydrate calcium sulfate caused by adding limestone powder at one time.

[0008] To achieve the above object, the present invention provides the following technical solutions: A mixing and stirring device for titanium gypsum production, comprising a material adding component and a reaction container; the reaction container comprises a tank body, a tank cover is fixed on the top of the tank body, a reduction motor is installed in the middle of the top of the tank cover, and the reduction motor is connected to a stirring paddle through a coupling; the stirring paddle extends into the tank body; A feed port is provided on the top of the tank cover, and a material dispersing mechanism is provided below the feed port. The material dispersing mechanism includes a material receiving shell, and an arc-shaped notch is provided on one side of the material receiving shell, and a rotating disk is provided in the notch; one end of the rotating disk is fixedly connected to a rotating drum, and the rotating drum is movably connected to the end of the auxiliary pipe through a bearing; The lower end of the rotating drum is also equipped with a driven wheel, which is connected to the driving wheel installed on the stirring paddle through a belt.

[0009] As a further technical solution of the present invention, an annular cover is fixedly provided on the top surface of the fixed disk, a disc that can reciprocate up and down is fixedly provided on the outer peripheral wall of the feed hopper, a plurality of return springs are fixedly provided between the bottom surface of the disc and the fixed disk, and the plurality of return springs are evenly distributed along the circumferential direction of the disc, two vibrators are fixedly provided on the bottom of the fixed disk, and the vibrators are distributed on both sides of the feed port of the screw conveyor; A dredging assembly is respectively provided on both sides of the feed hopper; the dredging assembly comprises a connecting block fixedly provided at the bottom of the disc, a first inclined block is fixedly provided on the connecting block, a reciprocating movable block is fixedly provided on the top surface of the fixed disc, a mounting plate is fixedly provided on the top surface of the movable block, a second inclined block and a third inclined block are respectively provided on the upper and lower sides of the mounting plate, a straight hole is provided in the movable block, a reciprocating rod that can move back and forth is provided in the straight hole, a through groove is provided on the top surface of the fixed disc, the lower end of the reciprocating rod is located in the through groove, and the lower end surface of the reciprocating rod is attached to the vibrator, a movable plate is fixedly provided on the upper end of the reciprocating rod, a plurality of pins are fixedly provided on the movable plate, and a working spring is fixedly provided between the movable block and the movable plate; An annular rubber tube is fixedly provided at the lower opening of the feed hopper, and first horizontal cuts are respectively provided on both sides of the annular rubber tube, and second vertical cuts are respectively provided on both sides of the annular rubber tube, and the upper end of the second cut is connected to the first cut.

[0010] As a further technical solution of the present invention, the addition of limestone powder in step 4 is performed by using a material adding component; the material adding component includes a support leg fixed inside the chassis, and a fixed plate is fixedly installed on the top of the support leg; a feed hopper is connected to the top of the fixed plate through a flange; a screw conveyor is fixedly installed in the middle position of the bottom of the fixed plate; the discharge end of the screw conveyor is connected to a butt pipe; the butt pipe is installed above the discharge port opened on the tank top cover through a flange.

[0011] As a further technical solution of the present invention, doors are movably connected on both sides of the chassis; ventilation slots are provided on the doors; a storage compartment with multiple layers is also provided at one end of the chassis; a workbench is provided on the top of the chassis; and a circular through slot is provided on the chassis for facilitating the addition of materials.

[0012] As a further technical solution of the present invention, a power distribution cabinet is fixed inside the chassis, and an industrial computer is arranged below the power distribution cabinet; the industrial computer is used for controlling the material adding assembly and the reaction container.

[0013] As a further technical solution of the present invention, an experimental rack is arranged above the chassis, the experimental rack has multiple layers, and a clamping groove is opened on the top layer for placing test tubes, beakers and test bottles.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. When the present invention is used, firstly, 1L of waste acid solution with a mass fraction of H2SO4 of 2.8% is taken into a reaction container, and the weighed limestone powder is poured into a feed hopper, and is transmitted by a screw conveyor, and then enters the reaction container through a butt joint; in the process of adding the limestone powder, the reduction motor drives the stirring paddle to rotate, and at the same time, the driving wheel installed on the stirring paddle drives the driven wheel to rotate through a belt, and the rotating drum drives the rotating disk to rotate under the drive of the driven wheel, and the rotating rotating disk can scrape the fallen limestone powder from the receiving shell, and evenly distribute it into the reaction container in a throwing manner, so as to avoid the limestone powder from falling in a concentrated manner and agglomerating or uneven stirring.

[0015] 2. In the present invention, when the rotating disk rotates, a small amount of limestone powder will fall on the rotating disk. In order to ensure that the added limestone powder can react with H2SO4, an L tube is set up. The compressed gas enters the L tube through the auxiliary tube. The L tube purges the limestone powder that falls on the rotating disk, so that the limestone powder falls into the reaction container and reacts with H2SO4.

[0016] 3. Through the provision of the unblocking device, when the limestone powder absorbs moisture in the air and causes partial agglomerations to block the lower end outlet of the feed hopper, the unblocking device will break up the agglomerates, thereby achieving the effect of automatic unblocking when the agglomerates block the lower end opening of the feed hopper, thereby eliminating the need for manual unblocking and avoiding the risk of waste caused by overflow of limestone powder when the agglomerates block the feed hopper and are not discovered manually, making the equipment more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the gypsum preparation device in the present invention.

[0018] Figure 2 The present invention Figure 1 The structural diagram on the right side of .

[0019] Figure 3 The present invention Figure 1 Schematic diagram of the internal structure.

[0020] Figure 4 The present invention Figure 3 Schematic diagram of part of the structure.

[0021] Figure 5 The present invention Figure 4 The structural diagram on the right side of .

[0022] Figure 6 The present invention Figure 5 Schematic diagram of part of the structure.

[0023] Figure 7 The present invention Figure 6 Schematic diagram of the rear structure.

[0024] Figure 8 It is a structural schematic diagram of the suction filtration mechanism in the present invention.

[0025] Fig. 9 The present invention Figure 8 The structural diagram on the right side of .

[0026] Fig.10 The present invention Fig. 9 Schematic diagram of the bottom structure.

[0027] Fig.11 The present invention Fig.10 Schematic diagram from another perspective.

[0028] Fig.12 The present invention Fig.10 An enlarged schematic diagram of point A.

[0029] Fig.13 The present invention Fig.11 An enlarged schematic diagram of point B.

[0030] Fig.14 This is a morphology diagram of Example 1 of the present invention.

[0031] Fig.15 This is a morphology diagram of Example 2 of the present invention.

[0032] Fig.16 This is a morphology diagram of Example 3 of the present invention.

[0033] Fig.17 This is a morphology diagram of Example 4 of the present invention.

[0034] Fig.18 This is the X-ray diffraction pattern of the product of Example 1 of the present invention.

[0035] Fig.19 This is the X-ray diffraction pattern of the product of Example 2 of the present invention.

[0036] Fig. 20 This is the X-ray diffraction pattern of the product of Example 3 of the present invention.

[0037] Fig.21 This is the X-ray diffraction pattern of the product of Example 4 of the present invention.

[0038] Fig. 22 It is a schematic diagram of the internal structure of the dredging device of the present invention.

[0039] Fig.23 yes Fig. 22 The X in the figure is enlarged.

[0040] Fig.24 yes Fig.23 Schematic diagram of the cross-section at YY in FIG.

[0041] Fig.25 Schematic diagram of the first incision and the second incision.

[0042] Fig.26 It is a schematic diagram of the Z direction after the pin enters the rubber tube through the first incision and the second incision.

[0043] In the figure: 1-chassis, 2-storage grid, 3-chamber door, 4-experimental rack, 5-air collecting hood, 6-drying box, 7-filter mechanism, 8-power distribution cabinet, 9-industrial computer, 10-material adding component, 11-reaction container, 12-clamping frame, 13-exhaust pipe, 14-filter; 71-support frame, 72-filter cover, 73-sealing cover, 74-filter plate, 75-liquid extraction pipe, 76-solenoid valve, 77-first butterfly valve, 78-compressed air pipe, 79-second butterfly valve, 710-auxiliary pipe, 711-third butterfly valve; 101-support legs, 102-fixed plate, 103-feed hopper, 104-screw conveyor, 105-butt joint; 111-tank cover, 112-reduction motor, 113-stirring paddle, 114-tank body, 115-driving wheel, 116-belt, 117-driven wheel, 118-rotating drum, 119-rotating disk, 1110-material receiving shell, 1111-L tube; 800-annular cover, 801-disc, 802-reset spring, 803-vibrator, 806-connecting block, 807-first inclined block, 808-moving block, 809-through slot, 810-straight hole, 811-reciprocating rod, 813-moving plate, 814-pin; 820-mounting plate, 821-second inclined block, 822-third inclined block; 830 - working spring, 840 - annular rubber tube, 841 - first incision, 842 - second incision. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Please refer to the attached Figure 14-21 In the embodiment of the present invention, the mixing and stirring device for titanium gypsum production includes a material adding component 10 and a reaction container 11; the material adding component 10 and the reaction container 11 can complete the following steps: Step 1, heating the reaction vessel for material reaction, and controlling the reaction temperature to 30-60°C; Step 2, turn on the stirring device and control the mechanical stirring rate to 100-500r / min; Step 3, placing the measured titanium dioxide waste acid solution in a reaction container, and stirring the symmetrically taken titanium dioxide waste acid solution for 3.5-7 minutes; Step 4, using limestone powder to neutralize the waste acid and regulating the waste acid neutralization process; the amount of limestone powder added is weighed according to the ratio of limestone powder: H2SO4=1.00-1.15, ensuring that the process neutralizes the H2SO4 in the waste acid to the greatest extent without causing Fe to precipitate out of the solution; Step 5, adding the limestone powder weighed in step 4 to the spent acid solution weighed in step 3 in multiple times; wherein the number of times of adding in multiple times ranges from 30 to 60 times; Step 6, the time interval for adding limestone powder each time in step 5 is 0.5-8min; Step 7, after all the limestone powder weighed in step 4 is added to the solution in step 3, continue stirring for 10 minutes; Step 8, after the reaction in step 7 is completed, stop stirring and continue to place it at 50°C for 30 minutes; Step 9, after step 8 is left to stand, use a suction filtration mechanism to filter it; Step 10, placing the solid product obtained by filtration in step 9 in a 50°C oven for drying, and retaining the liquid product obtained by filtration in step 9 for subsequent use.

[0046] Example 1: Take 1L of waste acid solution with a mass fraction of H2SO4 of 1.3% in a reaction container, control the temperature to 50°C, turn on the stirring device, control the mechanical stirring speed to 300r / min, weigh 14g of limestone powder, and add it to the waste acid solution in 50 times, with a single addition amount of limestone powder of 0.28g and a time interval of 3min. After all the limestone powder is added to the waste acid, continue stirring for 10min. After the reaction is complete, stop stirring and continue to place it at a temperature of 50°C for 30min. After the standing period is over, use a suction filtration mechanism for suction filtration. The solid product obtained by suction filtration is the crystallized titanium gypsum, which is placed in a 50°C oven for drying.

[0047] Example 2: Take 1L of waste acid solution with a mass fraction of H2SO4 of 1.3% in a reaction container, control the temperature to 50°C, turn on the stirring device, control the mechanical stirring speed to 300r / min, weigh 14g of limestone powder, add it to the waste acid solution at one time, stir for 10 minutes, stop stirring after the reaction is complete, continue to place it at a temperature of 50°C, let it stand for 30 minutes, and use a suction filtration mechanism to filter it after the end of standing. The solid product finally obtained by filtration is the completed crystallized titanium gypsum, which is placed in a 50°C oven for drying.

[0048] Example 3: Take 1L of waste acid solution with a H2SO4 mass fraction of 2.8% in a reaction container, control the temperature to 40°C, turn on the stirring device, control the mechanical stirring speed to 350r / min, weigh 30g of limestone powder, and add it to the waste acid solution in 60 times. The single addition amount of limestone powder is 0.50g, and the time interval between the addition of limestone powder is 4 min. After all the limestone powder is added to the waste acid, continue stirring for 10min. After the reaction is complete, stop stirring and continue to place it at a temperature of 40°C for 30min. After the standing period is over, use a suction filtration mechanism to filter it, and the solid product obtained by filtration is placed in a 50°C oven for drying.

[0049] Example 4: Take 1L of waste acid solution with a H2SO4 mass fraction of 2.8% in a reaction container, control the temperature to 40°C, turn on the stirring device, control the mechanical stirring speed to 100r / min, weigh 30g of limestone powder, and add it to the waste acid solution in 60 times. The single addition amount of limestone powder is 0.50 g, and the time interval between the addition of limestone powder is 4 min. After all the limestone powder is added to the waste acid, continue stirring for 10 min. After the reaction is complete, stop stirring and continue to place it at a temperature of 40°C for 30 min. After the standing period is over, use a suction filtration mechanism to filter it, and the solid product obtained by filtration is placed in a 50°C oven for drying.

[0050] Table 1 Calcium sulfate dihydrate content of the product in the example (%) Serial number Example 1 Example 2 Example 3 Example 4 Calcium sulfate dihydrate content / % 99.40% 72.65% 97.71% 85.19% Please refer to the attached Figure 1-6 and attached Fig.13 As a further illustration of the above embodiment, the above steps 1-8 are processed by using the mixing and stirring device; the addition of limestone powder in the step 4 is performed by using a material adding component 10; the material adding component 10 includes a support leg 101 fixed inside the chassis 1, and a fixed plate 102 is fixedly installed on the top of the support leg 101; a feed hopper 103 is arranged above the fixed plate 102; a screw conveyor 104 is fixedly installed at the middle position of the bottom of the fixed plate 102; the discharge end of the screw conveyor 104 is connected to a butt pipe 105; the butt pipe 105 is installed above the discharge port opened on the tank top cover 111 through a flange.

[0051] By adopting the above technical solution, when in use, first take 1L of waste acid solution with a H2SO4 mass fraction of 2.8% into the reaction container 11, pour the weighed limestone powder into the feed hopper 103, transport it through the screw conveyor 104, and then enter the reaction container 11 through the docking pipe 105.

[0052] Please refer to the attached Figure 10-13In this embodiment, the reaction container includes a tank body 114, a tank cover 111 is fixed on the top of the tank body 114, a reduction motor 112 is installed in the middle of the top of the tank cover 111, and the reduction motor 112 is connected to the stirring paddle 113 through a coupling; the stirring paddle 113 extends into the tank body 114; A feed port is provided at the top of the tank cover 111, and a material dispersing mechanism is provided below the feed port. The material dispersing mechanism includes a material receiving shell 1110, and an arc-shaped notch is provided on one side of the material receiving shell 1110, and a rotating disk 119 is provided in the notch; one end of the rotating disk 119 is fixedly connected to a rotating drum 118, and the rotating drum 118 is movably connected to the end of the auxiliary pipe 710 through a bearing; Please refer to the attached Figure 12-13 The lower end of the rotating drum 118 is also equipped with a driven wheel 117, which is connected to the driving wheel 115 installed on the stirring paddle 113 through a belt 116.

[0053] By adopting the above technical solution, during the process of adding limestone powder, the reduction motor 112 drives the stirring paddle 113 to rotate, and at the same time, the driving wheel 115 installed on the stirring paddle 113 drives the driven wheel 117 to rotate through the belt 116. Driven by the driven wheel 117, the rotating drum 118 drives the rotating disk 119 to rotate. The rotating rotating disk 119 can scrape the fallen limestone powder from the receiving shell 1110 and evenly distribute it to the inside of the reaction container 11 in a throwing manner, so as to avoid the limestone powder from falling in a concentrated manner and causing agglomeration or uneven stirring.

[0054] Further, an annular cover 800 is fixedly provided on the top surface of the fixed disk 102, a disc 801 that can reciprocate up and down is fixedly provided on the outer peripheral wall of the feed hopper 103, four return springs 802 are fixedly provided between the bottom surface of the disc 801 and the fixed disk 102, and the four return springs 802 are evenly distributed along the circumferential direction of the disc 801, and two vibrators 803 are fixedly provided on the bottom of the fixed disk 102, and the vibrators 803 are distributed on both sides of the feed port of the screw conveyor 104; A dredging assembly is respectively provided on both sides of the feed hopper 103; the dredging assembly includes a connecting block 806 fixedly provided at the bottom of the disc 801, a first inclined block 807 is fixedly provided on the connecting block 806, a reciprocating movable block 808 is provided on the top surface of the fixed disc 102, a mounting plate 820 is fixedly provided on the top surface of the movable block 808, a second inclined block 821 and a third inclined block 822 are respectively provided on the upper and lower sides of the mounting plate 820, and a straight A hole 810 is provided in the straight hole 810, a reciprocating rod 811 is provided in the top surface of the fixed plate 102, the lower end of the reciprocating rod 811 is located in the through slot 809, and the lower end surface of the reciprocating rod 811 is close to the vibrator 803, a moving plate 813 is fixedly provided at the upper end of the reciprocating rod 811, a plurality of pins 814 are fixedly provided on the moving plate 813, and a working spring 830 is fixedly provided between the moving block 808 and the moving plate 813; An annular rubber tube 840 is fixedly provided at the lower opening of the feed hopper 103, and horizontal first cutouts 841 are respectively provided on both sides of the annular rubber tube 840, and vertical second cutouts 842 are respectively provided on both sides of the annular rubber tube 840, and the upper end of the second cutout 842 is connected to the first cutout 841.

[0055] Through the above arrangement, when the limestone powder absorbs moisture in the air and causes partial agglomeration to block the lower end outlet of the feed hopper 103, as the limestone added into the feed hopper 103 increases, the weight of the limestone in the feed hopper 103 increases. When the limestone powder in the feed hopper 103 exceeds one-half of the volume of the feed hopper 103, the weight of the limestone in the feed hopper 103 exceeds the bearing weight of the multiple return springs 802, thereby causing the return springs 802 to deform, thereby causing the feed hopper 103 to move downward with the disc 801. At this time, the connecting block 806 and the first inclined block 807 also move downward, and the second inclined block 808 moves downward. When the first inclined block 807 moves downward and contacts the third inclined block 822, it will push the third inclined block 822, the moving block 808, the reciprocating rod 811, the moving plate 813, and the pin 814 to move toward the direction close to the annular rubber tube 840, so that the moving plate 813 will push the part of the annular rubber tube 840 that blocks the moving plate 813 toward both sides along the second incision 842 and the first incision 841, so that the pin 814 can enter the annular rubber tube 840. Since the feed hopper 103 is also moving downward, the pin 814 can reach the lower end opening of the feed hopper 103, allowing the pin 814 to contact the lower end opening of the feed hopper 103. The reciprocating rod 811 is vibrated up and down in the straight hole 810 under the vibration of the vibrator 803, so that the reciprocating rod 811 can shake up and down at the lump with the insertion pin 814, so as to break the lump, so that it can play the effect of automatic dredging when the lump blocks the lower end opening of the feed hopper 103, so that there is no need for manual dredging, and the risk of waste caused by overflow of limestone powder when the lump blocks the feed hopper and is not found manually is avoided, making the equipment more convenient to use; after dredging, the limestone powder falls from the feed hopper 103 to reduce the weight of the limestone in the feed hopper 103, and the reciprocating rod 811 is vibrated up and down at the lump with the insertion pin 814, so as to break the lump. The positioning spring 802 will bring the disc 801 and the feed hopper 103 back to their original positions, and the connecting block 806 and the first inclined block 807 will also return to their original positions. When the first inclined block 807 moves upward until it contacts the second inclined block 821, it will push the second inclined block 821 to return the mounting plate 820, the moving block 808, the moving plate 813 and the insertion pin 814 to their original positions, i.e., the insertion pin 814 will be moved out of the annular rubber tube 840. At this time, the part of the annular rubber tube 840 pushed away by the moving plate 813 will return to its original state, turning the annular rubber tube 840 into a complete cylindrical sleeve, thereby continuing to prevent the limestone powder from overflowing.

[0056] When the vibrator is working normally, it can transmit vibration to the disc 801 and the feed hopper 103 through the fixed disk 102 and the annular cover 800, so that the limestone powder in the feed hopper 103 can be fully shaken out; when the feed hopper is blocked, it can also assist the insertion needle to clear the blockage.

[0057] The elastic coefficient of the return spring 802 used here is greater than the elastic coefficient of the working spring 830, so the working spring 830 can be deformed and stretched under the vibration of the vibrator to make the pin shake up and down, while the return spring 802 can remain unchanged under the action of the vibrator.

[0058] Through Fig.26 As shown, when the needle enters the rubber tube through the first incision and the second incision to clear the lower opening of the feed hopper, the first incision 841 will be close to the top surface of the movable block 808, so as to minimize the risk of limestone powder leaking out through the needle 814 when clearing the feed hopper.

[0059] Furthermore, an L-tube 1111 is provided above the rotating disk 119, and the L-tube 1111 is welded and fixed to the auxiliary tube 710; A scraper is welded on the edge of one side of the lower end of the rotating disk 119, and the scraper is used to scrape the material at the bottom of the arc-shaped notch.

[0060] By adopting the above technical solution, when the rotating disk 119 rotates, a small amount of limestone powder will fall on the rotating disk 119. In order to ensure that the added limestone powder can react with H2SO4, we set up an L tube 1111. The compressed gas enters the L tube 1111 through the auxiliary pipe 710. The L tube 1111 purges the limestone powder that falls on the rotating disk 119, so that the limestone powder falls into the reaction container 11 and reacts with H2SO4.

[0061] Please refer to the attached Figure 1-2 In this embodiment, the chassis 1 is movably connected with doors 3 on both sides; the doors 3 are provided with ventilation slots; one end of the chassis 1 is also provided with a multi-layer storage compartment 2; the top of the chassis 1 is provided with a workbench; the chassis 1 is provided with a circular through slot for convenient material addition.

[0062] Please refer to the attached Figure 3-5 In this embodiment, a power distribution cabinet 8 is fixed inside the chassis 1, and an industrial computer 9 is provided below the power distribution cabinet 8; the industrial computer 9 is used to control the material adding component 10 and the reaction container 11.

[0063] By adopting the above technical solution, the industrial control computer 9 can control the simple coordination of various components, thereby realizing the preparation of gypsum; the control method of the industrial control computer is the existing technology, so it will not be repeated again.

[0064] Please refer to the attached Figure 1-2 In this embodiment, an experimental rack 4 is provided above the chassis 1. The experimental rack 4 has multiple layers, and a snap-in groove for placing test tubes, beakers, and test bottles is provided on the top layer.

[0065] By adopting the above technical solution, it is convenient for staff to take and use the experimental instruments.

[0066] Please see attached Figure 7-9 In this embodiment, a suction filter mechanism 7 is further provided inside the chassis 1, and a circular groove for exposing the suction filter mechanism 7 is provided on the workbench on the top of the chassis 1.

[0067] In this embodiment, the filtration mechanism 7 comprises a support frame 71, a filter cover 72 in a cone shape is fixed on the upper end of the support frame 71, a filter disc 74 is embedded inside the filter cover 72; a sealing cover 73 is fastened to the top of the filter cover 72 by a quick buckle; A liquid extraction pipe 75 and a compressed air pipe 78 are connected to one side of the filter cover 72; the liquid extraction pipe 75 and the compressed air pipe 78 that penetrate into the interior of the filter cover 72 are both located above the filter disc 74; the other end of the liquid extraction pipe 75 is connected to the bottom of the tank body 114, and a solenoid valve 76 and a first butterfly valve 77 are connected in series to the liquid extraction pipe 75; the other end of the compressed air pipe 78 is connected to a compressed air source, and a second butterfly valve 79 is connected in series to the compressed air pipe 78; the compressed air pipe 78 is also connected to a sub-pipe 710; and a third butterfly valve 711 is connected in series to the sub-pipe 710.

[0068] By adopting the above technical solution, steps 9-10, after standing in step 8, the mixture of limestone powder and H2SO4 is extracted by a suction filtration mechanism. We connect a suction filtration pump in series to the suction pipe 75. The mixture of limestone powder and H2SO4 is extracted from the bottom of the tank body 114 through the suction pipe 75, and transported to the filter cover 72, and filtered through the filter disc 74.

[0069] After the mixture of limestone powder and H2SO4 is pumped into the filter cover 72, the valve on the liquid extraction pipe 75 is closed, and then the second butterfly valve 79 is opened, and the compressed gas enters the filter cover 72 through the compressed air pipe 78 to pressurize the mixture of limestone powder and H2SO4, thereby achieving solid-liquid separation; The separated liquid enters the reaction container 11 through the reflux pipe at the bottom of the filter cover 72 for reuse.

[0070] Please see attached Figure 1-5 Furthermore, a drying box 6 is provided above the chassis 1 , and an air collecting hood 5 is provided above the drying box 6 ; the air collecting hood 5 is connected to the filter 14 through an exhaust pipe 13 .

[0071] By adopting the above technical solution, after solid-liquid separation, the sealing cover 73 is opened, the solid part remaining on the filter disc 74 is collected, and then placed in the drying box 6 for drying. The odor generated during the drying process is collected by the air collecting hood 5, and then enters the filter 14 through the exhaust pipe 13 for filtration, thereby avoiding exhaust gas pollution of the air.

[0072] The working principle is: In the present invention, when in use, first take 1L of waste acid solution with a mass fraction of 2.8% of H2SO4 into the reaction vessel 11, pour the weighed limestone powder into the feed hopper 103, transmit it through the screw conveyor 104, and then enter the reaction vessel 11 through the docking pipe 105; in the process of adding limestone powder, the reduction motor 112 drives the stirring paddle 113 to rotate, and at the same time, the driving wheel 115 installed on the stirring paddle 113 drives the driven wheel 117 to rotate through the belt 116, and the rotating drum 118 drives the rotating disk 119 to rotate under the drive of the driven wheel 117, and the rotating rotating disk 119 can scrape the fallen limestone powder from the receiving shell 1110, and evenly distribute it to the inside of the reaction vessel 11 in a throwing manner, so as to avoid the limestone powder from falling in a concentrated manner and agglomerating or uneven stirring.

[0073] When the rotating disk 119 rotates, a small amount of limestone powder will fall on the rotating disk 119. In order to ensure that the added limestone powder can react with H2SO4, we set up an L tube 1111. The compressed gas enters the L tube 1111 through the auxiliary pipe 710. The L tube 1111 purges the limestone powder that falls on the rotating disk 119, so that the limestone powder falls into the reaction container 11 and reacts with H2SO4.

[0074] Steps 9-10, after standing in step 8, the mixture of limestone powder and H2SO4 is extracted using a suction filtration mechanism. A suction filtration pump is connected in series to the suction pipe 75. The mixture of limestone powder and H2SO4 is extracted from the bottom of the tank 114 through the suction pipe 75, and transported to the filter cover 72, and filtered through the filter disc 74.

[0075] After the mixture of limestone powder and H2SO4 is pumped into the filter cover 72, the valve on the liquid extraction pipe 75 is closed, and then the second butterfly valve 79 is opened, and the compressed gas enters the filter cover 72 through the compressed air pipe 78 to pressurize the mixture of limestone powder and H2SO4, thereby achieving solid-liquid separation; The separated liquid enters the reaction container 11 through the reflux pipe at the bottom of the filter cover 72 for reuse.

[0076] After solid-liquid separation, the sealing cover 73 is opened, the solid part remaining on the filter disc 74 is collected, and then placed in the drying box 6 for drying. The odor generated during the drying process is collected by the air collecting hood 5, and then enters the filter 14 through the exhaust pipe 13 for filtration, thereby preventing exhaust gas from polluting the air.

[0077] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A mixing and stirring device for titanium gypsum production, characterized in that: The invention comprises a material adding assembly (10) and a reaction container (11); the reaction container comprises a tank body (114); a tank cover (111) is fixed on the top of the tank body (114); a reduction motor (112) is mounted in the middle of the top of the tank cover (111); the reduction motor (112) is connected to a stirring paddle (113) through a coupling; the stirring paddle (113) extends into the interior of the tank body (114); A feed port is provided at the top of the tank top cover (111), and a material dispersing mechanism is provided below the feed port. The material dispersing mechanism comprises a material receiving shell (1110), and an arc-shaped notch is provided on one side of the material receiving shell (1110), and a rotating disk (119) is provided in the notch; one end of the rotating disk (119) is fixedly connected to a rotating drum (118), and the rotating drum (118) is movably connected to the end of the auxiliary pipe (710) via a bearing; An L-tube (1111) is provided above the rotating disk (119), and the L-tube (1111) is fixed to the auxiliary tube (710) by welding; A scraper is welded on the edge of one side of the lower end of the rotating disk (119), and the scraper is used to scrape the material at the bottom of the arc-shaped notch; When the rotating disk (119) rotates, a small amount of limestone powder will fall onto the rotating disk (119). In order to ensure that the added limestone powder can react with H2SO4, compressed gas enters the L tube (1111) through the auxiliary pipe (710). The L tube (1111) purges the limestone powder that has fallen onto the rotating disk (119), so that the limestone powder falls into the reaction container (11) and reacts with H2SO4.

2. The mixing and stirring device for titanium gypsum production according to claim 1, characterized in that: A driven wheel (117) is also mounted on the lower end of the rotating drum (118), and the driven wheel (117) is connected to a driving wheel (115) mounted on the stirring paddle (113) through a belt (116).

3. The mixing and stirring device for titanium gypsum production according to claim 2, characterized in that: The material adding assembly (10) comprises a support leg (101) fixed inside the chassis (1), a fixed plate (102) fixedly mounted on the top of the support leg (101); a feed hopper (103) is arranged above the fixed plate (102); a screw conveyor (104) is fixedly mounted at the middle position of the bottom of the fixed plate (102); a butt pipe (105) is connected to the discharge end of the screw conveyor (104); and the butt pipe (105) is mounted above a discharge port opened on a tank top cover (111) via a flange.

4. The mixing and stirring device for titanium gypsum production according to claim 3, characterized in that: An annular cover shell (800) is fixedly provided on the top surface of the fixed disk (102); a circular disk (801) that can reciprocate up and down is fixedly provided on the outer peripheral wall of the feed hopper (103); a plurality of return springs (802) are fixedly provided between the bottom surface of the circular disk (801) and the fixed disk (102); and the plurality of return springs (802) are evenly distributed along the circumferential direction of the circular disk (801); and two vibrators (803) are fixedly provided on the bottom of the fixed disk (102); and the vibrators (803) are distributed on both sides of the feed port of the screw conveyor (104).

5. The mixing and stirring device for titanium gypsum production according to claim 4, characterized in that: A dredging assembly is respectively provided on both sides of the feed hopper (103); the dredging assembly comprises a connecting block (806) fixedly provided at the bottom of the disc (801), a first inclined block (807) being fixedly provided on the connecting block (806), a reciprocating movable block (808) being provided on the top surface of the fixed disc (102), a mounting plate (820) being fixedly provided on the top surface of the movable block (808), a second inclined block (821) and a third inclined block (822) being respectively provided on the upper side and the lower side of the mounting plate (820), and a straight hole (821) being provided in the movable block (808). 10), a reciprocating rod (811) is arranged in the straight hole (810), a through groove (809) is arranged on the top surface of the fixed plate (102), the lower end of the reciprocating rod (811) is located in the through groove (809), and the lower end surface of the reciprocating rod (811) is in contact with the vibrator (803), a moving plate (813) is fixedly arranged at the upper end of the reciprocating rod (811), a plurality of pins (814) are fixedly arranged on the moving plate (813), and a working spring (830) is fixedly arranged between the moving block (808) and the moving plate (813).

6. The mixing and stirring device for titanium gypsum production according to claim 5, characterized in that: An annular rubber tube (840) is fixedly provided at the lower opening of the feed hopper (103), and first cutouts (841) in a horizontal state are respectively provided on both sides of the annular rubber tube (840), and second cutouts (842) in a vertical state are respectively provided on both sides of the annular rubber tube (840), and the upper end of the second cutout (842) is connected to the first cutout (841).

7. The mixing and stirring device for titanium gypsum production according to claim 3, characterized in that: Doors (3) are movably connected to both sides of the chassis (1); ventilation slots are provided on the doors (3); a storage compartment (2) with multiple layers is also provided at one end of the chassis (1); a workbench is provided on the top of the chassis (1); and a circular through slot is provided on the chassis (1) for facilitating the addition of materials.

8. The mixing and stirring device for titanium gypsum production according to claim 3, characterized in that: A power distribution cabinet (8) is fixed inside the chassis (1), and an industrial control computer (9) is provided below the power distribution cabinet (8); the industrial control computer (9) is used to control the material adding component (10) and the reaction container (11).

9. The mixing and stirring device for titanium gypsum production according to claim 3, characterized in that: An experimental rack (4) is provided above the chassis (1), the experimental rack (4) having multiple layers, and a clamping groove for facilitating the placement of test tubes, beakers, and test bottles is provided on the top layer.

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