Manganese slag solution granulating device and method

Abstract

The invention discloses a manganese slag solution granulating device and method.The granulating device comprises a granulating bin and a granulator, the granulator comprises a rotating cylinder, a center shaft, a supporting cylinder and a driving part, the supporting cylinder is vertically fixed in the granulating bin, the center shaft is rotatably arranged in the supporting cylinder, the top end of the center shaft extends out of the supporting cylinder and is fixedly connected with the bottom end of the rotating cylinder, and the driving part is fixedly connected with the rotating cylinder; the bottom end of the center shaft extends out of the granulation bin and is connected with the output end of the driving part, a plurality of injection pipes are arranged around the side wall of the bottom of the rotary drum, the injection pipes are all communicated with the interior of the rotary drum, and intermittent injection control parts are all arranged on the injection pipes. A to-be-granulated manganese slag solution is guided into the rotating drum, the manganese slag solution enters the injection pipe under the action of centrifugal force, the intermittent injection control part is quickly switched on and off to mechanically crush the manganese slag solution in the injection pipe and intermittently inject the manganese slag solution into the granulation bin for granulation, the particle size of granulated slag particles can be effectively controlled, the slag particles are uniform, and the granulation efficiency is improved. And the granulating effect of the slag is effectively enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of energy conservation and environmental protection, and in particular to a manganese slag solution granulation device and method. Background Art

[0002] Ferromanganese is one of the indispensable additives in steel manufacturing. It is mainly composed of two elements, manganese and iron. When using traditional production processes to produce different grades of ferromanganese products, after the final slag is shaken out by shaking the bag, the final slag is usually treated by water quenching or dry slag pit cooling. The existing water quenching process has serious environmental pollution and energy waste problems, causing about 10 million tons of standard coal heat waste and 400,000 tons of H2S, SO2 and other harmful gas emissions each year. The dry slag pit cooling method will also produce a large amount of water vapor during cooling, and release a large amount of H2S and SO2 gases, which corrode buildings, damage equipment and deteriorate the working environment. These methods no longer meet the current requirements of energy conservation, emission reduction and clean production. The dry centrifugal granulation method is widely favored as the most promising slag waste heat recovery method because of its advantages such as being able to recover slag waste heat, ensuring material quality, simple and compact equipment, and low system energy consumption.

[0003] During the dry centrifugal granulation process, liquid slag drips onto the surface of the high-speed rotating granulator, and is thrown out under the action of centrifugal force and friction, forming small droplets under the action of surface tension. These tiny droplets undergo forced convection heat exchange with the heat transfer medium in the space and radiation heat exchange with the surrounding environment, so that the temperature of the small droplets is reduced and transformed into small solid particles. However, when granulating manganese slag solutions with high viscosity, its centrifugal granulation effect is seriously constrained by its high viscosity and surface tension. The droplets formed after granulation are large and uneven in size. The large-sized slag particles cool slowly in the granulation bin space and have sufficient time to crystallize, thereby reducing its glass conversion rate and affecting the granulation effect. Summary of the invention

[0004] The main purpose of the present invention is to overcome the defects of the above-mentioned background technology and provide a manganese slag solution granulation device and method.

[0005] To achieve the above-mentioned purpose, the manganese slag solution granulation device proposed in the present invention includes a granulation bin and a granulator arranged inside the granulation bin, a hot air outlet is opened at the top of the granulation bin, a slag guide pipe is arranged on the top of the granulation bin and penetrates to the top of the granulator, a slag particle outlet pipe and a cold air inlet pipe are respectively arranged at the bottom of the granulation bin, the granulator includes a rotating drum, a central axis, a supporting drum and a driving member, the supporting drum is vertically fixed on the center line of the granulation bin, the central axis is rotatably arranged in the supporting drum, the top end of the central axis extends to the outside of the supporting drum and is fixedly connected to the bottom end of the rotating drum, the bottom end of the central axis extends to the outside of the granulation bin and is connected to the output end of the driving member, a plurality of injection pipes are arranged around the bottom side wall of the rotating drum, the plurality of injection pipes are connected to the inside of the rotating drum, and intermittent injection control members are arranged on the plurality of injection pipes. The intermittent injection control component includes a fixed seat, a blocking piece and an annular guide rail, the fixed seat is fixed on the outer side wall of the rotating drum, the injection pipe horizontally passes through the fixed seat, the fixed seat is provided with a receiving groove, the injection pipe is provided with a gate on the tube body located in the receiving groove, the blocking piece is slidably arranged in a slideway formed by the two side walls of the receiving groove and the gate, the blocking piece is provided with a blocking area and a passing area, an upper guide rod and a lower guide rod are respectively provided at both ends of the blocking piece, through holes for the upper guide rod and the lower guide rod to pass through are respectively provided at both ends of the fixed seat, a spring is sleeved on the upper guide rod, the annular guide rail is fixed to the top end of the supporting cylinder, a plurality of arc transition protrusions are arranged at intervals on the track surface of the annular guide rail, and a roller is rotatably provided at the bottom end of the lower guide rod, and the roller corresponds to the track surface of the annular guide rail. During granulation, the manganese slag solution to be granulated enters the top of the granulator along the slag guide pipe and falls into the rotating drum. Under the action of centrifugal force, the manganese slag solution enters the injection pipe, and the intermittent injection control component rotates synchronously. When the roller at the bottom end of the lower guide rod rolls onto the raised block, the lower guide rod lifts the sealing piece to connect the injection pipe. After the roller leaves the position of the raised block, the spring presses down the sealing piece to seal the injection pipe to cut off the manganese slag solution. The repeated switching causes the manganese slag solution filament in the injection pipe to be disturbed by mechanical crushing and then fly out. The flying slag particles undergo convection heat exchange with the cold air blown from bottom to top to be quickly cold-formed, and some of the slag particles fly to the side wall of the granulation bin. The slag particles obtained by granulation have a smaller diameter and are more uniform, which effectively enhances the granulation effect of the slag.

[0006] Furthermore, a nozzle is detachably provided at one end of the injection pipe away from the drum, and the particle size and shape of the slag particles can be further adjusted and changed through the nozzle.

[0007] Furthermore, a guide cone is provided on the inner bottom surface of the drum, and a plurality of chutes are provided around the conical surface of the guide cone. One end of the chutes close to the drum side wall is connected to one end of the injection pipe, and the size of the chutes gradually decreases from the middle conical surface of the guide cone to the bottom of the cone. The guide cone allows the manganese slag solution to diffuse and flow evenly to the surrounding area. The chutes are composed of raised ribs on both sides. When the drum rotates, part of the manganese slag solution can be stirred to form a vortex to promote the mixing of the manganese slag solution and avoid local cooling and solidification.

[0008] Furthermore, the drum is composed of an inner sleeve, a heating coil, an insulation layer and a protective shell from inside to outside, the heating coil is sleeved on the inner sleeve, a conductive ring is provided on the top end surface of the support drum, and the terminal on the heating coil is electrically connected to the conductive ring. The heat generated by the heating coil radiates the manganese slag solution for heating and heat preservation, thereby ensuring the fluidity of the manganese slag solution in the drum, reducing the viscosity of the manganese slag solution, and preventing the manganese slag solution from solidifying and causing blockage, thereby affecting the granulation effect.

[0009] Furthermore, the upper sleeve of the protective shell is provided with a central gear, and a plurality of planetary gears are meshed and connected around the central gear, and the plurality of planetary gears can be rotatably mounted on a planetary frame, and the planetary frame is fixedly connected to the inner wall of the granulating bin through a fixing rod, and a large gear ring is meshed and connected to the outer periphery of the planetary gear, and a scraper rod is connected to the large gear ring, and the scraper rod abuts against the inner wall of the granulating bin. The scraper rod can timely scrape off the slag adhering to the inner wall of the granulating bin, so as to prevent the slag particles from splashing and adhering to the inner wall of the granulating bin, and affecting the effect of radiation heat exchange.

[0010] Furthermore, the scraper rod is in a "C"-shaped structure, a support ring is sleeved on the bottom of the support tube, and the lower end of the scraper rod is connected to the support ring.

[0011] Furthermore, the granulation bin is of a double-cone tank structure, a middle tank body of the granulation bin is provided with an interlayer jacket, and a cooling water inlet and a cooling water outlet are connected to the interlayer jacket.

[0012] Furthermore, a fluidized bed is provided at the bottom of the granulation bin, the cold air inlet pipe is communicated with the air inlet of the fluidized bed, and the slag particle outlet pipe is communicated with the discharge port of the fluidized bed.

[0013] The present invention also proposes a method for granulating by using the above-mentioned manganese slag solution granulating device, comprising the following steps:

[0014] S1. Start the driving member, which drives the drum to rotate through the central axis. At the same time, the external power supply is connected to the heating coil through the conductive ring, and the external cooling air enters the fluidized bed from the cold air inlet pipe and blows upward. The external cooling water enters the interlayer jacket from the cooling water inlet and flows out of the interlayer jacket from the cooling water outlet to circulate.

[0015] S2. The manganese slag solution enters the drum through the slag guide pipe, is poured onto the top of the guide cone, and flows evenly into the chute along the guide cone. Under the action of centrifugal force, part of the manganese slag solution is thrown onto the inner wall of the drum, and part enters the injection pipe and is thrown out. The manganese slag solution gradually splits into molten droplets during the flight process. The molten droplets exchange heat by convection with the wind blown up from the fluidized bed in the granulating bin, and exchange heat by radiation with the side wall of the interlayer jacket, and initially solidify into slag particles of a certain particle size.

[0016] S3, when the manganese slag solution is thrown onto the inner wall of the drum, the heat generated by the heating coil is radiated to the manganese slag solution for heating and heat preservation, thereby ensuring the fluidity of the manganese slag solution in the drum;

[0017] S4. During the process of the manganese slag solution being thrown out in the injection pipe, the intermittent injection control component continuously opens and closes the injection pipe at intervals to mechanically break the manganese slag solution filaments in the injection pipe. The intermittent injection control component rotates together with the drum when working. When the lower guide rod on the intermittent injection control component rotates to the raised block on the annular guide rail, the blocking piece is lifted up so that the passing area on the blocking piece is aligned with the lumen of the injection pipe, and the manganese slag solution can be thrown out through the injection pipe. After the lower guide rod leaves the raised block, the blocking piece descends under the action of the spring force on the upper guide rod so that the blocking area blocks the lumen of the injection pipe, thereby realizing the interval switch of the injection pipe;

[0018] S5. When the manganese slag solution is thrown onto the inner wall of the granulating bin, the central gear on the protective shell drives the planetary gear to rotate, and after the planetary gear is decelerated, the large gear ring is driven to reverse, and the large gear ring drives the scraper to rotate and scrape off the slag stuck on the inner wall of the granulating bin to avoid affecting the cooling of the slag particles;

[0019] S6. The initially solidified slag particles fall to the fluidized bed below under the action of gravity to further cool and solidify into shape, and then are discharged from the slag particle outlet pipe to complete the granulation of the manganese slag solution.

[0020] The beneficial effects of the present invention include: by introducing the manganese slag solution to be granulated into a rotating drum, the manganese slag solution enters the injection pipe under the action of centrifugal force, the intermittent injection control component rotates synchronously while the drum rotates, the roller on the bottom end of the lower guide rod of the intermittent injection control component rolls on the annular guide rail, when the roller rolls onto the protruding block, the lower guide rod lifts the blocking piece, the injection pipe is in a conducting state, the manganese slag solution in the injection pipe flows toward the granulation bin, after the roller leaves the position of the protruding block, the spring presses down the blocking piece to cut off the manganese slag solution in the injection pipe, the roller rolls to the next protruding block and opens the injection pipe again, repeated rapid switching causes the manganese slag solution liquid filaments in the injection pipe to be mechanically broken, and intermittently injected into the granulation bin for granulation, the diameter of the slag particles obtained by granulation can be effectively controlled, and the slag particles are relatively uniform, effectively enhancing the granulation effect of the slag. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an overall schematic diagram of a manganese slag solution granulation device in an embodiment of the present invention.

[0022] Figure 2 It is a schematic diagram of the interior of the granulating bin after being cut in an embodiment of the present invention.

[0023] Figure 3 Schematic diagram of the connection of the scraper rod in an embodiment of the present invention.

[0024] Figure 4 It is a schematic diagram of the installation of the rotating drum and the intermittent injection control component in the embodiment of the present invention.

[0025] Figure 5 Schematic diagram of an intermittent injection control component in an embodiment of the present invention.

[0026] Figure 6 Schematic diagram of the annular guide rail in an embodiment of the present invention.

[0027] Figure 7 Schematic diagram of a rotating drum in an embodiment of the present invention.

[0028] Reference numerals: 1 granulation bin; 101 hot air outlet; 102 interlayer sleeve; 103 cooling water inlet; 104 cooling water outlet; 2 granulator; 201 rotating drum; 2011 inner sleeve; 2012 heating coil; 2013 insulation layer; 2014 protective shell; 2015 conductive ring; 202 central axis; 203 supporting cylinder; 204 driving member; 205 injection pipe; 206 intermittent injection control member; 2061 fixing seat; 2062 blocking piece; 20621 blocking area; 20622 passing area; 2 063 annular guide rail; 2064 accommodating groove; 2065 gate; 2066 slideway; 2067 upper guide rod; 2068 lower guide rod; 2069 through hole; 20610 spring; 20611 raised block; 20612 roller; 207 nozzle; 208 guide cone; 209 chute; 3 slag guide pipe; 4 slag particle outlet pipe; 5 cold air inlet pipe; 6 central gear; 7 planetary gear; 8 planetary carrier; 9 large ring gear; 10 scraper rod; 11 support ring; 12 fluidized bed; 13 fixed rod; 14 hot gas collecting hood. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the embodiments of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, connection can be used for both fixing and circuit connection.

[0031] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] Example 1

[0034] See also Figures 1 to 6The manganese slag solution granulation device disclosed in the present invention comprises a granulation bin 1 and a granulator 2 arranged inside the granulation bin 1. The granulation bin 1 is a double-cone tank structure. An interlayer sleeve 102 is arranged in the middle tank body of the granulation bin 1. A cooling water inlet 103 and a cooling water outlet 104 are connected to the interlayer sleeve 102. The cooling water inlet 103 is used to communicate with external cooling water. The cooling water outlet 104 is used to transport the hot water generated after heat exchange to an external hot water-using device to recover the waste heat resources of the manganese slag solution. A hot air outlet 101 is provided at the top of the granulation bin 1. A hot air collecting hood 14 is provided above the hot air outlet 101. The hot air collecting hood 14 is used to collect the hot air generated in the granulation process of the manganese slag solution, and then transport it to an external heat-using device to recover the manganese slag solution. The waste heat resource of the slag solution is provided at the top of the granulating bin 1 with a slag guiding pipe 3 which penetrates to the top of the granulator 2. The slag guiding pipe 3 is used to guide the manganese slag solution to be granulated into the granulator 2 for granulation. A slag outlet pipe 4 and a cold air inlet pipe 5 are provided at the bottom of the granulating bin 1 respectively. The cold air inlet pipe 5 is connected with an external air cooler device to pass a cooling medium (cold air) into the granulating bin 1. The slag outlet pipe 4 is used to discharge the slag particles after granulation and cooling out of the granulating bin 1. The granulator 2 comprises a rotating drum 201, a central axis 202, a supporting drum 203 and a driving member 204. The supporting drum 203 is vertically fixed on the center line of the granulating bin 1, and the bottom end is fixedly connected to the inner bottom surface of the granulating bin 1. The central axis 202 is rotatably arranged in the center of the supporting drum 203. The support cylinder 203 is provided with a plurality of bearings (not shown) inside thereof, which are used for axially and radially supporting the central shaft 202 to prevent the central shaft 202 from moving up and down or left and right. The top end of the central shaft 202 extends to the outside of the support cylinder 203 and is fixedly connected to the bottom end of the rotating drum 201. The bottom end of the central shaft 202 extends to the outside of the granulating bin 1 and is connected to the output end of the driving member 204. Specifically, the driving member 204 is a motor, and the output of the motor is output to the central shaft 202 after being decelerated by a reduction gear box, so as to drive the rotating drum 201 to rotate. A plurality of injection pipes 205 are horizontally provided on the side wall at the bottom of the rotating drum 201, and the plurality of injection pipes 205 are all connected to the inside of the rotating drum 201. Intermittent injection control members 206 are provided on the plurality of injection pipes 205. Specifically, The intermittent injection control member 206 includes a fixed seat 2061, a blocking piece 2062 and an annular guide rail 2063. The fixed seat 2061 is fixed on the outer wall of the drum 201. The injection pipe 205 passes through the fixed seat 2061 horizontally. A receiving groove 2064 is provided on the fixed seat 2061. A gate 2065 is provided on the tube body of the injection pipe 205 located in the receiving groove 2064. The blocking piece 2062 is slidably arranged in a slideway 2066 formed by the two side walls of the receiving groove 2064 and the gate 2065. The blocking piece 2062 is provided with a blocking area 20621 and a passing area 20622. The passing area 20622 is a hole consistent with the inner diameter of the tube cavity of the injection pipe 205. When the blocking piece 2062 slides up and down on the slideway 2066,After the passing area 20622 is aligned with the lumen of the injection tube 205, the injection tube 205 is in a conducting state, and after the blocking area 20621 is aligned with the lumen of the injection tube 205, it is in a blocking state. An upper guide rod 2067 and a lower guide rod 2068 are respectively provided at the upper and lower ends of the blocking piece 2062, and through holes 2069 for the upper guide rod 2067 and the lower guide rod 2068 to pass through are respectively provided at the two ends of the fixing seat 2061. The through holes 2069 are connected to the accommodating groove 2064, and a spring 20610 is sleeved on the upper guide rod 2067. One end of the spring 20610 abuts against the top surface of the accommodating groove 2064, and the other end abuts against the upper end of the blocking piece 2062. When the blocking piece 2062 When moving upward, the spring 20610 is compressed, the annular guide rail 2063 is fixed on the top of the support cylinder 203, the top of the central axis 202 passes through the annular guide rail 2063, and a plurality of arc-shaped protrusions 20611 are arranged at intervals on the track surface of the annular guide rail 2063. A roller 20612 is rotatably arranged at the bottom of the lower guide rod 2068, and the roller 20612 corresponds to the track surface of the annular guide rail 2063, that is, the roller 20612 rolls along the track surface of the annular guide rail 2063; a fluidized bed 12 is arranged at the bottom of the granulating bin 1, the cold air inlet pipe 5 is connected to the air inlet of the fluidized bed 12, and the slag particle outlet pipe 4 is connected to the discharge port of the fluidized bed 12.

[0035] When the manganese slag solution granulating device of this embodiment is in granulation operation, the manganese slag solution to be granulated enters the top of the granulator 2 along the slag guide pipe 3 and falls into the rotating drum 201. Under the action of centrifugal force, the manganese slag solution enters the injection pipe 205. While the drum 201 rotates, the intermittent injection control member 206 rotates synchronously, and the roller 20612 at the bottom end of the lower guide rod 2068 rolls on the annular guide rail 2063. When the roller 20612 rolls onto the protruding block 20611, the lower guide rod 2068 lifts the blocking piece 2062, so that the passing area 2062 of the blocking piece 2062 2 is aligned with the lumen of the injection tube 205, and the manganese slag solution in the injection tube 205 flows to the side of the granulation bin 1. After the roller 20612 leaves the position of the protruding block 20611, the spring 20610 presses down the plugging piece 2062 so that the plugging area 20621 of the plugging piece 2062 cuts off the manganese slag solution in the injection tube 205 for plugging. The roller 20612 rolls to the next protruding block 20611 and opens the injection tube 205 again. The rapid switch causes the manganese slag solution in the injection tube 205 to be mechanically crushed and intermittently injected into the granulation bin 1 for granulation. Even the manganese slag solution with high viscosity is The manganese slag solution liquid thread can be cut off to produce slag particles with smaller diameter and more uniformity without high rotation speed and large turntable. The intermittent injection control part 206 cleverly utilizes the power of the rotating drum 201, and the injection pipe 205 can be controlled by the intermittent switch without introducing a new power source. The manganese slag solution in the injection pipe 205 is mechanically crushed when switching. Moreover, the intermittent switch control of the injection pipe 205 can be realized by a purely mechanical structure without the need for electronic component control. The service life of the injection pipe 205 is longer and the operation is more stable in the high-temperature granulation bin 1. At the same time, by controlling the rotation speed of the rotating drum 201 (the manganese slag solution liquid thread is in the injection pipe), the manganese slag solution in the injection pipe 205 is cut off to produce slag particles with smaller diameter and more uniformity. The frequency of being cut off in the shooting tube 205) can also effectively control the particle size of the granulated slag particles; the generated slag particles are then subjected to convection heat exchange with the cold air blown from bottom to top to be quickly cold-formed, and some of the slag particles fly to the side wall of the granulating bin 1. Since cooler water circulates in the interlayer sleeve 102, the inner wall of the granulating bin 1 and the slag particles are subjected to radiation heat exchange, so that the slag particles are further cooled, and the slag particles can be reduced from adhering to the inner wall of the granulating bin 1. After cooling, the slag particles fall to the fluidized bed 12 below and are further cooled into slag particles below 50°C. The slag particles obtained by granulation have a smaller diameter and are more uniform, which effectively enhances the granulation effect of the molten slag.

[0036] Example 2

[0037] See also Figure 5 In order to facilitate the adjustment and change of the particle size and shape of the slag particles, this embodiment adds a nozzle 207 on the basis of Embodiment 1. The nozzle 207 is detachably provided at the end of the injection pipe 205 away from the drum 201, that is, the nozzle 207 is provided at the outlet end of the injection pipe 205. The nozzle 207 is preferably installed at the outlet end of the injection pipe 205 by a threaded connection. During the granulation process, the diameter of the slag wire ejected from the nozzle 207 is substantially consistent with the inner diameter and shape of the nozzle 207.

[0038] Example 3

[0039] See also Figure 7 In order to prevent the manganese slag solution from being suddenly pre-cooled and solidified when entering the drum 201, causing the blockage of the injection pipe 205 and the nozzle 207 and affecting the granulation efficiency, this embodiment is based on the above-mentioned embodiment 2, and a guide cone 208 is provided on the inner bottom surface of the drum 201, and a plurality of chutes 209 are arranged around the conical surface of the guide cone 208. One end of the chute 209 close to the side wall of the drum 201 is connected with one end of the injection pipe 205, and the size of the chute 209 extending from the middle conical surface of the guide cone 208 to the bottom of the cone gradually decreases. The manganese slag solution is evenly diffused and flows to the periphery through the guide cone 208. The chute 209 is composed of raised ribs on both sides. When the drum 201 rotates, part of the manganese slag solution can be stirred to form a vortex to promote the mixing of the manganese slag solution, thereby avoiding local cooling and solidification, and part of the manganese slag solution is thrown into the injection pipe 205 along the chute 209; and the inner wall of the drum 201 is respectively composed of inner liner 20 from inside to outside. 11. The heating coil 2012, the insulation layer 2013 and the protective shell 2014 are composed. The heating coil 2012 adopts a resistance heating ring, the inner sleeve 2011 adopts a graphite material, and the insulation layer 2013 adopts a rare earth ceramic thermal insulation material. The heating coil 2012 is sleeved on the inner sleeve 2011, and a conductive ring 2015 is provided on the top end surface of the support cylinder 203. The diameter of the conductive ring 2015 is smaller than the diameter of the annular guide rail 2063. The terminal on the heating coil 2012 is electrically connected to the conductive ring 2015, and the conductive ring 2015 is electrically connected to an external power supply, so that the heating coil 2012 can also be energized in a rotating state. When the manganese slag solution rotates in the rotating drum 201, the heat generated by the heating coil 2012 radiates the manganese slag solution for heating and insulation, thereby ensuring the fluidity of the manganese slag solution in the rotating drum, preventing the manganese slag solution from solidifying and causing blockage, reducing the viscosity of the manganese slag solution, and improving the granulation effect. Of course, the heating coil 2012 can also be an induction coil. By passing a medium-frequency current through the conductive ring 2015, the medium-frequency current generates high-density magnetic lines in the induction coil and cuts the manganese slag solution contained in the induction coil, causing the manganese slag solution to generate large eddy currents for heating, thereby preventing the manganese slag solution from solidifying.

[0040] Example 4

[0041] See also Figure 3In order to further prevent the slag particles from splashing and adhering to the inner wall of the granulating bin 1, thereby affecting the effect of radiation heat exchange, this embodiment, on the basis of the above-mentioned embodiment 3, adds a scraper member 10 to timely scrape off the slag adhering to the inner wall of the granulating bin 1, and the power required for scraping borrows the rotational power of the granulator 2, without introducing a new power source, thus saving the energy consumption of the device; in this embodiment, a central gear 6 is sleeved on the protective shell 214, and a plurality of planetary gears 7 are meshedly connected around the central gear 6, and the plurality of planetary gears 7 can be rotatably mounted on a planetary carrier 8, and the planetary carrier 8 is fixedly connected to the inner wall of the granulating bin 1 through a fixing rod 13, and a large gear ring 9 is meshedly connected to the outer periphery of the planetary gear 7, and a scraper member 10 is connected to the large gear ring 9, and the scraper member 1 0 abuts against the inner wall of the granulating bin 1; the scraper member 10 is in a "C"-shaped structure, and a support ring 11 is rotatably sleeved on the bottom of the support cylinder 203, and the lower end of the scraper member 10 is connected to the support ring 11, and the middle section of the "C"-shaped structure of the scraper member 10 abuts against the inner wall of the granulating bin 1, and the two ends are respectively connected to the large gear ring 9 and the support ring 11. When the rotating drum 201 (protective shell 2014) rotates, the central gear 6 rotates synchronously, and the central gear 6 drives the planetary gear 7, and the planetary gear 7 drives the large gear ring 9 to reverse, thereby driving the scraper member 10 to scrape off the slag adhered to the inner wall of the granulating bin 1 in time. Since the scraper member 10 needs low speed and high torque when scraping the inner wall of the granulating bin 1, the planetary gear transmission method of this embodiment can well achieve this.

[0042] Example 5

[0043] See also Figures 1 to 7 The granulation method of the manganese slag solution disclosed in this embodiment uses the manganese slag solution granulation device in the above embodiment to perform granulation, and includes the following steps:

[0044] S1. Start the driving member 204, which drives the drum 201 to rotate through the central shaft 202. At the same time, the external power supply is connected to the heating coil 2012 through the conductive ring 2015, and the external cooling wind enters the fluidized bed 12 from the cold air inlet pipe 5 and blows upward. The external cooling water enters the interlayer sleeve 102 from the cooling water inlet 103 and then flows out of the interlayer sleeve 102 from the cooling water outlet 104 to circulate. S2. The manganese slag solution enters the drum 201 through the slag guide pipe 3, is poured onto the top of the guide cone 208, and flows evenly into the chute 209 along the guide cone 208. Under the action of centrifugal force, part of the manganese slag solution is thrown onto the inner wall of the drum 201, and part of it enters the injection pipe 205 along the chute 209 to form liquid filaments and The liquid filaments are thrown outward (in the shape of a liquid column when the diameter of the injection tube 205 is large and the inlet flow rate is large), and the liquid filaments are gradually split into molten droplets during the flying process. The molten droplets exchange heat with the cooling air blown up from the fluidized bed 12 in the granulating bin 1 by convection, and exchange heat with the side wall of the interlayer sleeve 102 by radiation. The setting of the interlayer sleeve 102 can reduce the adhesion of the molten droplets to the inner wall of the granulating bin 1 (the side wall shared by the interlayer sleeve 102 and the granulating bin 1), and the molten droplets are initially solidified into slag particles of a certain particle size; S3, part of the manganese slag solution is thrown onto the inner wall of the rotating drum 201, and the heat generated by the power supply of the heating coil 2012 is used to heat and insulate the manganese slag solution, thereby ensuring the fluidity of the manganese slag solution in the rotating drum 201 and preventing the manganese slag solution from solidifying and causing blockage. Since the chute 209 is composed of protrusions on both sides When the drum 201 rotates, the raised ribs can stir part of the manganese slag solution to form a vortex to promote more uniform mixing of the manganese slag solution, which is beneficial to the contact between the manganese slag solution and the interlayer sleeve 102 for heat exchange, and further avoid local cooling and solidification of the manganese slag solution; S4, during the process of the manganese slag solution being thrown out of the injection pipe 205, the intermittent injection control member 206 continuously opens and closes the injection pipe 205 at intervals, so that the liquid filaments are cut off and split into droplets under mechanical crushing disturbance. When the intermittent injection control member 206 is working, it rotates with the drum 201. When the roller 20612 on the lower guide rod 2068 on the intermittent injection control member 206 rolls and rotates to the raised block 20611 on the annular guide rail 2063, the blocking piece 2062 is lifted up so that the blocking piece 2 The passing area 20622 on 062 is aligned with the lumen of the injection pipe 205, and the manganese slag solution can be thrown out through the injection pipe 205. After the lower guide rod 2068 leaves the protruding block 20611, the sealing piece 2062 descends under the elastic force of the spring 20610 on the upper guide rod 2067 to make the sealing area 20621 block the lumen of the injection pipe 205, so that the interval switch of the injection pipe 205 can mechanically crush and split the liquid filament, and the slag particles formed have a smaller diameter and are more uniform; S5, when the manganese slag solution is thrown to the inner wall of the granulation bin 1, the central gear 6 on the protective shell 2014 drives the planetary gear 7 to rotate, and the large gear ring 9 decelerates and reverses to drive the scraper 10 to rotate and scrape off the slag stuck on the inner wall of the granulation bin 1 to avoid affecting the cooling of the slag particles;S6, the initially solidified slag particles fall to the fluidized bed 12 below under the action of gravity to further cool and solidify, and then are discharged from the slag particle outlet pipe 4, completing the granulation of the manganese slag solution. ;

[0045] The above content is a further detailed description of the present invention in combination with specific / preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, without departing from the concept of the present invention, they can also make several substitutions or modifications to these described embodiments, and these substitutions or modifications should be regarded as belonging to the protection scope of the present invention. In the description of this specification, the description of reference terms "an embodiment", "some embodiments", "preferred embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily target the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In the absence of mutual contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples. Although the embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and modifications can be made herein without departing from the scope of protection of the patent application.

Claims

1. A manganese slag solution granulation device, characterized in that: It includes a granulation bin and a granulator arranged inside the granulation bin, a hot air outlet is opened at the top of the granulation bin, a slag guide pipe is arranged on the top of the granulation bin and penetrates to the top of the granulator, a slag outlet pipe and a cold air inlet pipe are arranged at the bottom of the granulation bin, respectively, the granulator includes a rotating drum, a central axis, a supporting drum and a driving member, the supporting drum is vertically fixed on the center line of the granulation bin, the central axis is rotatably arranged in the supporting drum, the top end of the central axis extends to the outside of the supporting drum and is fixedly connected to the bottom end of the rotating drum, the bottom end of the central axis extends to the outside of the granulation bin and is connected to the output end of the driving member, a plurality of injection pipes are arranged around the bottom side wall of the rotating drum, the plurality of injection pipes are connected to the inside of the rotating drum, and intermittent injection control members are arranged on the plurality of injection pipes.

2. The manganese slag solution granulation device according to claim 1, characterized in that: The intermittent injection control component includes a fixed seat, a blocking piece and an annular guide rail, the fixed seat is fixed on the outer side wall of the rotating drum, the injection pipe horizontally passes through the fixed seat, the fixed seat is provided with a receiving groove, the injection pipe is provided with a gate on the tube body located in the receiving groove, the blocking piece is slidably arranged in a slideway formed by the two side walls of the receiving groove and the gate, the blocking piece is provided with a blocking area and a passing area, an upper guide rod and a lower guide rod are respectively provided at both ends of the blocking piece, through holes for the upper guide rod and the lower guide rod to pass through are respectively provided at both ends of the fixed seat, a spring is sleeved on the upper guide rod, the annular guide rail is fixed to the top end of the supporting cylinder, a plurality of arc transition protrusions are arranged at intervals on the track surface of the annular guide rail, and a roller is rotatably provided at the bottom end of the lower guide rod, and the roller corresponds to the track surface of the annular guide rail.

3. The manganese slag solution granulation device according to claim 2, characterized in that: The spray pipe is detachably provided with a nozzle at one end away from the drum.

4. The manganese slag solution granulation device according to claim 3, characterized in that: A guide cone is provided on the inner bottom surface of the drum, and a plurality of chutes are arranged around the conical surface of the guide cone. One end of the chute close to the side wall of the drum is connected to one end of the injection pipe, and the size of the chute gradually decreases from the middle conical surface of the guide cone to the bottom of the cone.

5. The manganese slag solution granulation device according to claim 4, characterized in that: The rotating drum is composed of an inner sleeve, a heating coil, an insulation layer and a protective shell from the inside to the outside. The heating coil is sleeved on the inner sleeve. A conductive ring is provided on the top end face of the supporting drum. The terminal on the heating coil is electrically connected to the conductive ring.

6. The manganese slag solution granulation device according to claim 5, characterized in that: The upper sleeve of the protective shell is provided with a central gear, and a plurality of planetary gears are meshed and connected around the central gear. The plurality of planetary gears can be rotatably mounted on a planetary carrier, and the planetary carrier is fixedly connected to the inner wall of the granulating bin through a fixing rod. A large gear ring is meshed and connected to the outer periphery of the planetary gear, and a scraper rod is connected to the large gear ring, and the scraper rod abuts against the inner wall of the granulating bin.

7. The manganese slag solution granulation device according to claim 6, characterized in that: The scraper rod is in a "C"-shaped structure, a support ring is sleeved on the bottom of the support tube, and the lower end of the scraper rod is connected to the support ring.

8. The manganese slag solution granulation device according to claim 7, characterized in that: The granulating bin is of a double-cone tank structure, and a sandwich jacket is arranged on the middle tank body of the granulating bin, and a cooling water inlet and a cooling water outlet are connected to the sandwich jacket.

9. The manganese slag solution granulation device according to claim 8, characterized in that: A fluidized bed is provided at the bottom of the granulation bin, the cold air inlet pipe is communicated with the air inlet of the fluidized bed, and the slag particle outlet pipe is communicated with the discharge port of the fluidized bed.

10. A method for granulating a manganese slag solution, characterized in that: Granulation is performed using the manganese slag solution granulation device according to any one of claims 1 to 9, comprising the following steps: S1. Start the driving member, which drives the drum to rotate through the central axis. At the same time, the external power supply is connected to the heating coil through the conductive ring, and the external cooling air enters the fluidized bed from the cold air inlet pipe and blows upward. The external cooling water enters the interlayer jacket from the cooling water inlet and flows out of the interlayer jacket from the cooling water outlet to circulate. S2. The manganese slag solution enters the drum through the slag guide pipe, is poured onto the top of the guide cone, and flows evenly into the chute along the guide cone. Under the action of centrifugal force, part of the manganese slag solution is thrown onto the inner wall of the drum, and part enters the injection pipe to form liquid filaments and is thrown outward. The liquid filaments gradually split into molten droplets during the flight process. The molten droplets conduct convection heat exchange with the wind blown up from the fluidized bed in the granulation bin, and conduct radiation heat exchange with the side wall of the interlayer jacket, and initially solidify into slag particles of a certain particle size; S3, when the manganese slag solution is thrown onto the inner wall of the drum, the heat generated by the heating coil is radiated to the manganese slag solution for heating and heat preservation, thereby ensuring the fluidity of the manganese slag solution in the drum and preventing the manganese slag solution from solidifying and causing blockage; S4. During the process of the manganese slag solution being thrown out in the injection pipe, the intermittent injection control component continuously opens and closes the injection pipe at intervals, and the liquid filaments in the injection pipe are mechanically broken and split into droplets. The intermittent injection control component rotates together with the rotating drum when working. When the lower guide rod on the intermittent injection control component rotates to the raised block on the annular guide rail, the blocking piece is lifted up so that the passing area on the blocking piece is aligned with the tube cavity of the injection pipe, and the manganese slag solution can be thrown out through the injection pipe. After the lower guide rod leaves the raised block, the blocking piece descends under the action of the spring elastic force on the upper guide rod so that the blocking area blocks the tube cavity of the injection pipe, thereby realizing the interval switch of the injection pipe; S5. When the manganese slag solution is thrown onto the inner wall of the granulating bin, the central gear on the protective shell drives the planetary gear to rotate, and after the planetary gear is decelerated, the large gear ring is driven to reverse, and the large gear ring drives the scraper to rotate and scrape off the slag stuck on the inner wall of the granulating bin to avoid affecting the cooling of the slag particles; S6. The initially solidified slag particles fall to the fluidized bed below under the action of gravity to further cool and solidify into shape, and then are discharged from the slag particle outlet pipe to complete the granulation of the manganese slag solution.

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