Method for recovering and treating artificial rutile mother liquor

Abstract

The present invention relates to the technical field of artificial rutile, and discloses a method for recovering and treating artificial rutile mother liquor, comprising the following steps: filtering the mother liquor, wherein the mother liquor is filtered using a filtering device capable of regularly cleaning impurities; the filtering device comprises a treatment box, a plate-shaped filter screen is provided in the treatment box, a collection hole is provided in the middle of the filter screen, a protective component is provided above the collection hole, a collection frame is provided at the bottom of the collection hole, the collection frame can be withdrawn from the treatment box, a liquid inlet component is installed at the top of the treatment box, and cleaning components for cleaning the filter screen are provided at both ends of the treatment box. The present invention can effectively clean impurities generated by filtering the mother liquor through the filter screen through the filtering device, and can fix the impurities in the collection frame, thereby improving the mother liquor filtering effect and filtration efficiency, automating the work, and saving manpower and material resources.

Description

Technical Field

[0001] The invention relates to the technical field of artificial rutile production, in particular to a method for recovering and treating artificial rutile mother liquor. Background Art

[0002] General steps for rutile mother liquor recovery:

[0003] Liquid-solid separation: Separate the waste liquid containing rutile from the solid particles. This can be achieved by sedimentation, filtration or centrifugation.

[0004] Dissolving rutile: The rutile in the wastewater is dissolved, usually using a strong acid or other solvent. This converts the rutile into soluble compounds.

[0005] Crystal separation: By controlling temperature, concentration and other conditions, the rutile dissolved in the solution is recrystallized into solid crystals.

[0006] Crystals can be obtained by filtration or other solid-liquid separation methods. Recovering the solution: The solution after crystal separation is collected. This solution may still contain some impurities that have not been completely reacted and other valuable metal elements.

[0007] Impurity removal: The recovered solution is purified to remove impurities and other metal elements through chemical reactions, ion exchange or other methods.

[0008] Crystallization and drying: The treated solution is crystallized and dried to obtain pure rutile product.

[0009] Whether it is the Chinese patent application with publication number CN 1314598C, which discloses a method for recovering and treating artificial rutile mother liquor, or the Chinese patent application with publication number CN103159263B, which discloses a method for treating artificial rutile mother liquor, or other related patents, they all require the use of filtering equipment to filter impurities in the liquid. However, existing filtering equipment is not convenient for cleaning impurities after filtration, which brings inconvenience to use, reduces filtration efficiency, and consumes a lot of manpower and material resources. Summary of the Invention

[0010] In order to solve the technical problems raised in the background technology, the present invention provides a method for recovering and treating artificial rutile mother liquor.

[0011] The present invention is implemented by the following technical solution: a method for recovering and treating artificial rutile mother liquor, comprising the following steps: filtering the mother liquor, wherein the mother liquor is filtered using a filtering device that can regularly clean impurities;

[0012] The filtration equipment includes a processing box, a plate-shaped filter screen is arranged in the processing box, a collection hole is opened in the middle of the filter screen, a protective component is arranged above the collection hole, a collection frame is arranged at the bottom of the collection hole, the collection frame can be pulled out of the processing box, a liquid inlet component is installed on the top of the processing box, and cleaning components for cleaning the filter screen are arranged at both ends of the processing box.

[0013] As a further improvement to the above solution, the liquid inlet assembly includes a water inlet pipe, a liquid separator pipe, and several injection pipes. The water inlet pipe is installed at the top of the treatment tank and is used to receive the mother liquor. One end of the liquid separator pipe is connected to the liquid inlet pipe. The bottom of the liquid separator pipe is provided with several water outlets, each of which is connected to an injection pipe. This solution facilitates the decentralized transportation of the mother liquor and improves the mother liquor filtration efficiency.

[0014] As a further improvement of the above scheme, the protective assembly includes a protective cover arranged above the collecting hole, and the protective cover is provided with feed holes on the shell on the opposite sides of the collecting hole, and an opening and closing mechanism is also provided on the opposite sides of the protective cover. The opening and closing mechanism controls the feed hole to connect with the collecting hole and the space above the filter.

[0015] Through the above solution, the protective cover can be used to prevent the mother liquid from entering the collection hole, and to prevent the mother liquid from passing through the filter plate without being filtered.

[0016] As a further improvement of the above scheme, the opening and closing mechanism includes a protective plate and a pull rod. The bottom of the protective plate can fit on the top surface of the filter, the top of the protective plate is connected to the pull rod, and the other end of the pull rod is connected to the top shell of the protective cover through a sliding connection unit.

[0017] Through the above solution, the protective plate can be opened conveniently, so that the filtered impurities can pass through the collection hole.

[0018] As a further improvement of the above scheme, the cleaning assembly includes a cleaning push plate and a power unit for driving the cleaning push plate. The cleaning push plate slides against the top surface of the filter to clean the filter. The power unit is used to drive the cleaning push plate to slide back and forth above the filter.

[0019] Through the above solution, the impurities on the filter screen can be pushed to the collection hole by using the cleaning push plate.

[0020] As a further improvement of the above scheme, the power unit includes a driving gear, a driving motor and a tooth plate installed on the top surface of the cleaning push plate, wherein the driving motor is installed on the processing box, the output shaft of the driving motor is connected to the driving gear, and the driving gear is engaged with the tooth plate.

[0021] Through the above solution, the driving motor is powered on to drive the active gear to drive the tooth plate to drive the cleaning push plate to reciprocate, thereby cleaning the top surface of the filter screen.

[0022] As a further improvement of the above scheme, the sliding connection unit includes an installation cavity opened on the top of the protective cover and a slide groove provided on the inner wall of the installation cavity. A slider that can slide with the slide groove is installed on the pull rod, and the slide groove is inclined, and the end of the slide groove close to the middle of the protective cover is highest.

[0023] Through the above solution, the pull rod can be driven to move in the sliding groove while the protective plate moves, thereby changing the longitudinal position of the protective plate.

[0024] As a further improvement of the above scheme, a movable seat is installed on the cleaning push plate, and a push rod parallel to the cleaning push plate is fixed on the movable seat. The push rod can interfere with the protective plate to push the protective plate to move, so that the protective plate is lifted along the slide groove, so that the cleaning push plate pushes the impurities through the feed hole to the collection hole.

[0025] Through the above solution, the push rod can push the protective plate to move when the cleaning push plate moves.

[0026] As a further improvement of the above scheme, a spring is fixed on the cleaning push plate, the other end of the spring is connected to the movable seat, and the movable seat and the cleaning push plate are slidingly connected, a second perforation is opened on the protective plate, and a first perforation is opened on the side of the protective cover, and when the protective plate and the side of the protective cover are fitted together, perforation one coincides with perforation two, and at the same time, the push rod can pass through perforation one and perforation two.

[0027] The above solution can provide good cushioning when the push rod and the protective plate come into contact, thus avoiding damage to the structure.

[0028] As a further improvement of the above scheme, the bottom water outlet of the injection pipe is rectangular, and a blocking column is rotatably connected to the water outlet. Several through holes are opened on the blocking column, and both ends of the blocking column movably pass through the injection pipe and are connected to a driving gear. A transmission disk that can engage with the driving gear is rotatably installed in the processing box, and a toggle column is eccentrically fixed on the disk surface of the transmission disk. The inner wall of the processing box is also slidably installed with an L-shaped transmission frame through a slide rail. The vertical part of the transmission frame is opened with a strip hole, and the toggle column is movably inserted into the strip hole. The horizontal part of the transmission frame is installed with a rack, which can engage with the driving gear, and the slide rail includes a horizontal section and an inclined section, and the bottom end of the inclined section is lower than the horizontal section.

[0029] The bottom of the treatment box is used for precipitating the mother liquor after filtration, and a connecting hole is longitudinally opened on the bottom shell of the treatment box, and an observation sampling tube connected to the connecting hole is provided on the outside of the treatment box, and a drainage pump is installed on the outside of the treatment box, and the liquid outlet of the drainage pump is connected to the drainage pipe, and the liquid inlet of the drainage pump is connected to the liquid collection pipe. A socket is longitudinally opened on the liquid collection pipe, and a liquid extraction pipe is installed at the socket. The liquid extraction pipe includes a main body and a movable part that are relatively slidably connected. The movable part cannot pass through the socket upward, and the top of the main body can pass through the socket. A mounting frame is provided on the inner wall of the treatment box, and a miniature waterproof motor is fixed on the mounting frame. The output end of the waterproof motor is connected to a lifting gear, and a lifting rack meshing with the lifting gear is longitudinally provided on the inner wall of the main body to adjust the height of the liquid extraction port at the bottom of the liquid extraction pipe.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The recovery method proposed in the present invention first filters the mother liquor to facilitate subsequent further processing of the mother liquor. The filtering equipment proposed in the present invention includes a processing box, a plate-shaped filter screen is provided in the processing box, a collection hole is opened in the middle part, a protective component is provided above the collection hole, a collection frame is provided at the bottom of the collection hole, the collection frame can be pulled out of the processing box, a liquid inlet component is installed on the top of the processing box, and cleaning components for cleaning the filter screen are provided at both ends of the processing box.

[0032] The present invention can effectively clean impurities generated by filtering mother liquor through the filter screen through the filtering equipment, and can collect them fixedly in the collection frame, thereby improving the mother liquor filtering effect and filtering efficiency, automating the work, and saving manpower and material resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the overall structure of the filtering device provided in Example 1 of the present invention;

[0034] Figure 2 A top view of the local structure of the filtering device provided in Example 1 of the present invention;

[0035] Figure 3 For the present invention Figure 1 A magnified view of point A;

[0036] Figure 4 For the present invention Figure 1 Enlarged view of point B;

[0037] Figure 5 is a schematic cross-sectional view of the bottom of the injection pipe of the present invention;

[0038] Figure 6 For the present invention Figure 1 Enlarged view of point C;

[0039] Figure 7 For the present invention Figure 6 Enlarged view of point D;

[0040] Figure 8 It is a schematic diagram of the three-dimensional structure of the liquid extraction tube of the present invention.

[0041] Description of main symbols:

[0042] In the figure: processing box 1, liquid distribution pipe 2, water inlet pipe 3, injection pipe 4, transmission frame 5, strip hole 6, toggle column 7, transmission plate 8, driving gear 9, push rod 10, movable seat 11, spring 12, cleaning push plate 13, collection frame 14, blocking column 15, driving gear 16, through hole 17, horizontal section 18, sliding block 19, inclined section 20, tooth plate 21, collection hole 22, filter 23, perforation 1 25, pull rod 26, chute 27, protective cover 28, protective plate 29, perforation 2 30, drain pipe 31, drain pump 32, liquid extraction pipe 33, connecting hole 34, observation sampling tube 35, movable part 36, connecting port 37, liquid collection pipe 38, main body 39, lifting gear 40, mounting frame 41. DETAILED DESCRIPTION

[0043] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0044] Example 1:

[0045] The method for recovering and treating artificial rutile mother liquor specifically comprises the following steps:

[0046] The artificial rutile mother liquor is filtered to remove solid impurities, and then heated and concentrated to increase the iron ion concentration thereof. The heating and concentration temperature is 80-95°C, and the iron ion concentration in the concentrated liquid is 220-240 g / l. The obtained concentrated liquid is sprayed into a roasting furnace for roasting. The furnace temperature in the roasting furnace is 680-700°C. The concentrated liquid is atomized into waste acid microspheres in a high-temperature oxidizing atmosphere. The waste acid microspheres then undergo a thermal decomposition reaction to form hydrogen chloride gas and solid oxides mainly composed of iron oxide. The solid oxides fall into a silo at the bottom of the roasting furnace and are then crushed to obtain ultrafine iron oxide. The hydrogen chloride gas rises and is absorbed by water in an absorption tower to obtain regenerated hydrochloric acid.

[0047] The mother liquor is filtered using a filter that can regularly clean impurities, see Figure 1-7In this solution, the filtering equipment includes a treatment box 1, a plate-shaped filter screen 23 is provided in the treatment box 1, a collection hole 22 is opened in the middle of the filter screen 23, a protective component is provided above the collection hole 22, and a collection frame 14 is provided at the bottom of the collection hole 22. The collection frame 14 can be pulled out of the treatment box 1, a liquid inlet component is installed on the top of the treatment box 1, and cleaning components for cleaning the filter screen 23 are provided at both ends of the treatment box 1.

[0048] Reference Figure 1 It can be seen that the liquid inlet component includes a water inlet pipe 3, a liquid separation pipe 2 and several injection pipes 4, wherein the water inlet pipe 3 is installed on the top of the treatment box 1 and is used to receive the mother liquor, one end of the liquid separation pipe 2 is connected to the liquid inlet pipe 3, and several water outlets (not marked) are provided at the bottom of the liquid separation pipe 2, and each water outlet is connected to an injection pipe 4.

[0049] The protective assembly includes a protective cover 28 which is arranged above the collecting hole 22. The protective cover 28 is located on the shell on opposite sides of the collecting hole 22 and has feed holes (not marked). An opening and closing mechanism is also provided on opposite sides of the protective cover 28 to control the feed holes to connect to the collecting hole 22 and the space above the filter screen 23.

[0050] The opening and closing mechanism includes a protective plate 29 and a pull rod 26. The bottom of the protective plate 29 can fit the top surface of the filter 23. The top of the protective plate 29 is connected to the pull rod 26. The other end of the pull rod 26 is connected to the top shell of the protective cover 28 through a sliding connection unit.

[0051] The cleaning assembly includes a cleaning push plate 13 and a power unit that drives the cleaning push plate 13. The cleaning push plate 13 slides against the top surface of the filter 23 to clean the filter 23. The power unit is used to drive the cleaning push plate 13 to slide back and forth above the filter 23. During use, the front end height of the cleaning push plate 13 should be large enough to ensure that the height of the pushed impurities does not exceed the top surface of the cleaning push plate 13, so that the cleaning can be more thorough.

[0052] The power unit includes a driving gear 9, a driving motor and a toothed plate 21 installed on the top surface of the cleaning push plate 13, wherein the driving motor is installed on the processing box 1, the output shaft of the driving motor is connected to the driving gear 9, and the driving gear 9 is meshed with the toothed plate 21.

[0053] The sliding connection unit includes a mounting cavity (not shown) opened on the top of the protective cover 28, a slide groove 27 provided on the inner wall of the mounting cavity, a slider which can slide with the slide groove 27 is installed on the pull rod 26, and the slide groove 27 is inclined, and the end of the slide groove 27 close to the middle of the protective cover 28 is the highest. Figure 4 , which enables the protective plate 29 to move horizontally and rise and fall while following the pull rod 26 along the slide groove 27.

[0054] A movable seat 11 is installed on the cleaning push plate 13, and a push rod 10 parallel to the cleaning push plate 13 is fixed on the movable seat 11. The push rod 10 can interfere with the protective plate 29 to push the protective plate 29 to move, so that the protective plate 29 is lifted along the slide groove 27, so that the cleaning push plate 13 pushes the impurities through the feed hole to the collection hole 22.

[0055] A spring 12 is also fixed on the cleaning push plate 13, the other end of the spring 12 is connected to the movable seat 11, and the movable seat 11 and the cleaning push plate 13 are slidingly connected, a second through-hole 30 is provided on the protective plate 29, and a first through-hole 25 is provided on the side of the protective cover 28. When the side of the protective plate 29 and the protective cover 28 are fitted together, the first through-hole 25 coincides with the second through-hole 30, and the push rod 10 can pass through the first through-hole 25 and the second through-hole 30.

[0056] During the specific work, the cleaning push plate 13 gradually approaches the protective plate, so that the push rod 10 first contacts the protective plate, pushing the protective plate to move, and the protective plate gradually rises due to the action of the slide groove. At this time, the cleaning push plate 13 continues to move in the direction close to the collecting hole, and the protective plate will no longer block the discharge hole, so that the impurities cleaned by the cleaning push plate enter the collecting hole, and when the protective plate 29 contacts the side of the protective cover 28, the push rod can just pass through the perforation 2 30, and a return spring is also installed in the slide groove 17, so that when the cleaning push plate moves in the direction, the return spring can push the pull rod to drive the protective plate 29 back to its initial position.

[0057] The bottom water outlet of the injection pipe 4 is rectangular, and a blocking column 15 is rotatably connected to the water outlet. A number of through holes 17 are provided on the blocking column 15, and both ends of the blocking column 15 movably pass through the injection pipe 4 and are connected to a driving gear 16. A transmission disk 8 that can engage with the driving gear 9 is rotatably installed in the processing box 1, and a toggle column 7 is eccentrically fixed on the disk surface of the transmission disk 8. The inner wall of the processing box 1 is also slidably installed with an L-shaped transmission frame 5 through a slide rail. The vertical part of the transmission frame 5 is provided with a strip hole 6, and the toggle column 7 is movably inserted into the strip hole 6. The horizontal part of the transmission frame 5 is installed with a rack, which can engage with the driving gear 16, and the slide rail includes a horizontal section 18 and an inclined section 20, and the bottom end of the inclined section 20 is lower than the horizontal section 18.

[0058] Through the above design, when the cleaning push plate moves toward the protective cover, the transmission frame 5 drives the blocking column 15 to rotate, so that the through hole 17 is no longer connected to the injection pipe 4 and the external space. At this time, the sewage no longer flows downward, so that when the opening and closing mechanism is opened, no sewage will be left. Moreover, when the blocking column 15 moves so that the sewage no longer flows downward, due to the setting of the inclined section 20, the continued movement of the transmission frame 5 will not drive the blocking column 15 to continue to rotate. In this way, when the transmission frame 5 moves back, it can naturally drive the blocking column to reset, so that the sewage continues to flow downward.

[0059] Example 2:

[0060] Reference Figure 1 and Figure 7 In this solution, in order to enable this solution to also precipitate and filter sewage, the bottom of the treatment box 1 is used to precipitate the filtered mother liquor, and a connecting hole 34 is longitudinally opened in the bottom shell of the treatment box, and an observation sampling tube 35 connected to the connecting hole 34 is provided on the outside of the treatment box 1. A drainage pump 32 is installed on the outside of the treatment box 1, and the liquid outlet end of the drainage pump 32 is connected to the drainage pipe 31, and the liquid inlet end of the drainage pump 32 is connected to the liquid collection pipe 38. A plug hole is longitudinally opened on the liquid collection pipe 38, and a liquid extraction pipe 33 is installed at the plug hole. The liquid extraction pipe 33 includes a main body 39 and a movable part 36 that are relatively slidably connected. The movable part 36 cannot pass through the plug hole upward, and the top of the main body 39 can pass through the plug hole. A mounting bracket 41 is provided on the inner wall of the treatment box 1, and a micro waterproof motor is fixed on the mounting bracket 41. The output end of the waterproof motor is connected to a lifting gear, and a lifting rack meshing with the lifting gear 40 is longitudinally provided on the inner wall of the main body 39, thereby adjusting the height of the liquid extraction port at the bottom of the liquid extraction pipe 33.

[0061] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A method for recovering and treating artificial rutile mother liquor, characterized in that: The invention relates to a method for filtering mother liquor and adopting a filtering device for regularly cleaning impurities, wherein the filtering device comprises a processing box, a plate-shaped filter screen is provided in the processing box, a collection hole is provided in the middle of the filter screen, a protective component is provided above the collection hole, a collection frame is provided at the bottom of the collection hole, and the collection frame can be pulled out of the processing box, a liquid inlet component is installed on the top of the processing box, and cleaning components for cleaning the filter screen are provided at two locations of the processing box; The protective assembly includes a protective cover arranged above the collection hole, wherein the protective cover is provided with feed holes on the shells on opposite sides of the collection hole, and an opening and closing mechanism is provided on the opposite sides of the protective cover to control the feed holes to communicate with the collection hole and the space above the filter screen; The opening and closing mechanism includes a protective plate and a pull rod, the bottom of the protective plate can be attached to the top surface of the filter screen, the top of the protective plate is connected to the pull rod, and the other end of the pull rod is connected to the top shell of the protective cover through a sliding connection unit; The cleaning assembly includes a cleaning push plate and a power unit for driving the cleaning push plate to move. The cleaning push plate slides against the top surface of the filter screen to clean the filter screen. The power unit is used to drive the cleaning push plate to slide back and forth above the filter screen. A movable seat is installed on the cleaning push plate, and a push rod parallel to the cleaning push plate is fixed on the movable seat. The push rod can contact the protective plate to push the protective plate to move, so that the protective plate is lifted along the chute, so that the cleaning push plate pushes the impurities through the feed hole to the collection hole; A spring is also fixed on the cleaning push plate, the other end of the spring is connected to the movable seat, and the movable seat and the cleaning push plate are slidably connected, the protective plate is provided with a second perforation, and the side of the protective cover is provided with a first perforation, and when the protective plate and the side of the protective cover are fitted together, the first perforation coincides with the second perforation, and the push rod can pass through the first perforation and the second perforation.

2. The method for recovering and treating artificial rutile mother liquor according to claim 1, wherein: The liquid inlet assembly includes a water inlet pipe, a liquid separation pipe and several injection pipes, wherein the water inlet pipe is installed at the top of the treatment box and is used to receive the mother liquid, one end of the liquid separation pipe is connected to the liquid inlet pipe, and several water outlets are provided at the bottom of the liquid separation pipe, and each water outlet is connected to an injection pipe.

3. The method for recovering and treating artificial rutile mother liquor according to claim 2, wherein: The power unit includes a driving gear, a driving motor and a toothed plate installed on the top surface of the cleaning push plate, wherein the driving motor is installed on the processing box, the output shaft of the driving motor is connected to the driving gear, and the driving gear is meshed with the toothed plate.

4. The method for recovering and treating artificial rutile mother liquor according to claim 1, wherein: The sliding connection unit includes an installation cavity opened on the top of the protective cover and a slide groove provided on the inner wall of the installation cavity. A slider that can slide with the slide groove is installed on the pull rod, and the slide groove is set at an angle, and the end of the slide groove close to the middle of the protective cover is the highest.

5. The method for recovering and treating artificial rutile mother liquor according to claim 3, wherein: The bottom water outlet of the injection pipe is rectangular, and a blocking column is rotatably connected to the water outlet. A number of through holes are provided on the blocking column, and both ends of the blocking column movably pass through the injection pipe and are connected to a driving gear. A transmission disk that can engage with the driving gear is rotatably installed in the processing box, and a toggle column is eccentrically fixed on the disk surface of the transmission disk. An L-shaped transmission frame is also slidably installed on the inner wall of the processing box through a slide rail. A strip hole is provided on the vertical part of the transmission frame, and the toggle column is movably inserted into the strip hole. A rack is installed on the horizontal part of the transmission frame, and the rack can engage with the driving gear. The slide rail includes a horizontal section and an inclined section, and the bottom end of the inclined section is lower than the horizontal section.

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