CN212492952U - Heavy metal passivator apparatus for producing - Google Patents

Abstract

The utility model provides a heavy metal passivator apparatus for producing, heavy metal passivator apparatus for producing includes reation kettle, the stirring piece, first driving piece, scrape wall spare, the second driving piece, promote piece and third driving piece, reation kettle has the reaction chamber, the stirring piece is rotationally established in the reaction chamber, first driving piece links to each other so that drive stirring piece rotates with the stirring piece, it rotationally establishes at the reaction chamber to scrape wall spare, wherein scrape the wall of the neighbouring reaction chamber in border of wall spare, the second driving piece links to each other so that the wall spare is scraped in the drive and rotates, promote and establish in the reaction chamber with reciprocating, perhaps promote the piece and rotationally establish in the reaction chamber, it is the heliciform to promote the piece, the third driving piece links to each other with promoting the piece. The utility model discloses a heavy metal passivator apparatus for producing has the assurance to no matter be the homogeneous mixing of high viscosity material or high solid material, the wide advantage of range of application.

Description

Heavy metal passivator apparatus for producing

Technical Field

The utility model relates to an environmental protection technical field, concretely relates to heavy metal passivator apparatus for producing.

Background

The heavy metal pollution of the soil refers to the phenomenon that heavy metal substances such as arsenic, cadmium, mercury, lead, chromium and the like are brought into the soil due to human activities, so that the content of the heavy metal in the soil is obviously higher than that in a natural background value, and the ecological environment is further damaged. The adoption of soil conditioners (also called heavy metal passivators or heavy metal stabilizers) such as new heavy metal curing/stabilizing materials for chemically stabilizing and repairing the heavy metal polluted soil is an economical and efficient repairing technology. However, the device for producing the heavy metal passivator in the related art cannot uniformly mix high-viscosity materials or high-solid materials, and has a small application range.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent.

Therefore, the embodiment of the utility model provides a heavy metal passivator apparatus for producing, this heavy metal passivator apparatus for producing have the assurance to no matter be the homogeneous mixing of high viscosity material or high solid volume material, the wide advantage of range of application.

According to the utility model discloses heavy metal passivator apparatus for producing includes reation kettle, stirring piece, first driving piece, scrapes wall spare, second driving piece, promotion piece and third driving piece. The reaction kettle is provided with a reaction cavity; the stirring piece is rotatably arranged in the reaction cavity; the first driving piece is connected with the stirring piece so as to drive the stirring piece to rotate; the wall scraping piece is rotatably arranged in the reaction cavity, wherein the edge of the wall scraping piece is adjacent to the wall surface of the reaction cavity; the second driving piece is connected with the wall scraping piece so as to drive the wall scraping piece to rotate; the lifting piece can be arranged in the reaction cavity in a vertically movable mode, or the lifting piece can be rotatably arranged in the reaction cavity and is in a spiral shape; the third driving member is connected with the lifting member.

According to the utility model discloses heavy metal passivator apparatus for producing, the stirring piece can stir the material of reaction intracavity under the drive of first driving piece, and then realizes the mixture of material. The wall scraping piece can peel materials adhered to the wall surface of the reaction cavity from the wall surface of the reaction cavity under the driving of the second driving piece, and meanwhile, the lifting piece can lift the materials positioned at the bottom of the reaction cavity to the stirring area where the stirring piece is positioned under the driving of the third driving piece. Therefore, the problem that partial materials are adhered to the wall surface of the reaction cavity or deposited at the bottom of the reaction cavity far away from the stirring piece to cause incomplete stirring is avoided. That is to say, no matter be the high viscosity material of easy adhesion on the wall of reaction chamber, still be difficult for being driven the high solid material of stirring when keeping away from the stirring piece, all can carry out intensive mixing by the stirring piece in the reaction chamber, effectively guarantee the homogeneous mixing of material. From this, according to the utility model discloses heavy metal passivator apparatus for producing can accomplish the mixture to high viscosity material, also can accomplish the mixture to high solid material, and the range of application is wider.

In some embodiments, the production apparatus for a heavy metal passivator further comprises a first central shaft, the first driving member is a first motor, the first driving member is connected with the first central shaft, a first portion of the first central shaft extends into the reaction chamber, the stirring member is mounted on the first portion of the first central shaft, the first central shaft extends along the up-down direction, the stirring members are multiple, and the multiple stirring members are arranged on the first portion of the first central shaft at intervals along the up-down direction.

In some embodiments, the stirring member includes a shearing dispersion plate including a plate body, a plurality of upper serrations and a plurality of lower serrations alternately provided on the plate body in a circumferential direction of the plate body, the upper serrations extending upward and outward from the plate body, and the lower serrations extending downward and outward from the plate body.

In some embodiments, the upper saw teeth and the lower saw teeth are inclined in a rotation direction of the tray body.

In some embodiments, the apparatus for producing a heavy metal passivator further comprises a second central shaft, the second central shaft is sleeved on the first central shaft, a first portion of the second central shaft extends into the reaction cavity, the wall scraping member is mounted on the first portion of the second central shaft, the second driving member is a second motor, the second driving member is connected with the second central shaft through a driving member extending in a horizontal direction, and the first driving member and the second driving member are arranged in the horizontal direction.

In some embodiments, the production apparatus for the heavy metal passivator further comprises a mounting frame, the mounting frame is connected with the peripheral wall of the second central shaft, and the wall scraping member is detachably arranged on the mounting frame.

In some embodiments, the mounting bracket includes a bracket body, a second connecting portion and a third connecting portion, the bracket body includes a first vertical portion, a second vertical portion and a first connecting portion, a first end of the first connecting portion is connected to a lower end of the first vertical portion, a second end of the first connecting portion is connected to a lower end of the second vertical portion, and optionally, the first connecting portion is arc-shaped; the first end of second connecting portion with the upper end of first vertical portion links to each other, the second end of second connecting portion with the periphery wall of second center pin links to each other, the first end of third connecting portion with the upper end of the vertical portion of second links to each other, the second end of third connecting portion with the periphery wall of second center pin links to each other, wherein scrape the wall spare and include first side scraper blade, second side scraper blade and end scraper blade, first side scraper blade with first section of first vertical portion links to each other, second side scraper blade with the second section of vertical portion of second links to each other, end scraper blade with first connecting portion link to each other.

In some embodiments, the third drive member is the second motor, and the helical lifting member is mounted on the mounting bracket.

In some embodiments, the two lifting members are respectively a first lifting member and a second lifting member, a lower end of the first lifting member is connected to a lower end of the first vertical portion, a middle portion of the first lifting member is connected to a middle portion of the second vertical portion, an upper end of the first lifting member is connected to an upper end of the first vertical portion, a lower end of the second lifting member is connected to a lower end of the second vertical portion, a middle portion of the second lifting member is connected to a middle portion of the first vertical portion, and an upper end of the second lifting member is connected to an upper end of the second vertical portion.

In some embodiments, the lifting member is a ribbon and the agitating member is located inside the ribbon.

Drawings

Fig. 1 is a schematic diagram of a heavy metal passivator production device according to the embodiment of the invention.

Reference numerals:

heavy metal passivator apparatus for producing 100, reation kettle 1, charge door 101, discharge gate 102, first driving piece 2, shearing dispersion impeller 3, go up sawtooth 301, lower sawtooth 302, disk body 303, first center pin 4, second driving piece 5, mounting bracket 6, first vertical portion 601, the vertical portion 602 of second, first connecting portion 603, second connecting portion 604, third connecting portion 605, spiral shell area 7, second center pin 8, first side scraper blade 9, second side scraper blade 10, end scraper blade 11.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

A heavy metal passivator production apparatus 100 according to an embodiment of the invention is described below with reference to fig. 1.

As shown in fig. 1, the apparatus 100 for producing a heavy metal passivator according to the embodiment of the present invention includes a reaction kettle 1, a stirring member, a first driving member 2, a wall scraping member, a second driving member 5, a lifting member, and a third driving member. The reaction kettle 1 is provided with a reaction cavity, and the stirring piece is rotatably arranged in the reaction cavity. The first drive member 2 is connected to the stirring element for driving the stirring element in rotation. The wall scraping piece is rotatably arranged in the reaction cavity, wherein the edge of the wall scraping piece is adjacent to the wall surface of the reaction cavity. The second driving member 5 is connected to the scraping member for driving the scraping member to rotate. The lifting piece can be arranged in the reaction cavity in a vertically movable mode, or the lifting piece can be arranged in the reaction cavity in a rotatable mode and is in a spiral shape. The third driving member is connected with the lifting member.

According to the utility model discloses heavy metal passivator apparatus for producing 100, the stirring piece can stir the material of reaction intracavity under the drive of first driving piece 2, and then realizes the mixture of material. The wall scraping piece can peel materials adhered to the wall surface of the reaction cavity from the wall surface of the reaction cavity under the driving of the second driving piece 5, and meanwhile, the lifting piece can lift the materials at the bottom of the reaction cavity to the stirring area where the stirring piece is located under the driving of the third driving piece. Therefore, the problem that partial materials are adhered to the wall surface of the reaction cavity or deposited at the bottom of the reaction cavity far away from the stirring piece to cause incomplete stirring is avoided. That is to say, no matter be the high viscosity material of easy adhesion on the wall of reaction chamber, still be difficult for being driven the high solid material of stirring when keeping away from the stirring piece, all can carry out intensive mixing by the stirring piece in the reaction chamber, effectively guarantee the homogeneous mixing of material. From this, according to the utility model discloses heavy metal passivator apparatus for producing 100 can accomplish the mixture to high viscosity material, also can accomplish the mixture to high solid material, and the range of application is wider.

Moreover, according to the utility model discloses heavy metal passivator apparatus for producing 100 compares in the ball-milling stirring mode among the correlation technique, and the volume is littleer, and equipment maintenance cost of maintenance and processing cost are lower, and industrialization, scale up ization are easier.

Therefore, according to the utility model discloses heavy metal passivator apparatus for producing 100 has the assurance to no matter be the homogeneous mixing of high viscosity material or high solid material, advantages such as range of application is wide.

As shown in fig. 1, the production apparatus 100 for a heavy metal passivator may include a reaction kettle 1, a first driving member 2, a first central shaft 4, a stirring member, a second central shaft 8, a mounting frame 6, a second driving member 5, a third driving member, a wall scraping member, and a lifting member. Wherein, reation kettle 1 has the reaction chamber, and first driving piece 2 is installed on reation kettle 1 and is linked to each other with the stirring piece that is located the reaction chamber through first center pin 4. The second central shaft 8 is sleeved on the first central shaft 4, and the mounting frame 6 is positioned in the reaction cavity and connected with the second central shaft 8. The second driving member 5 and the third driving member are the same driving member, and the driving member is installed on the reaction kettle 1 and connected with the second central shaft 8. The wall scraping piece and the lifting piece are both arranged on the mounting frame 6.

Specifically, the first driving member 2 is a first motor, and the first driving member 2 is connected to the first central shaft 4, wherein a first portion of the first central shaft 4 extends into the reaction chamber. That is, the upper section of the first central shaft 4 is located above the reaction vessel 1 and connected to the first motor, and the lower section of the first central shaft 4 forms the first portion. The stirring members are attached to a first portion of the first center shaft 4, the first center shaft 4 extends in the up-down direction, and the stirring members are provided in plural numbers, and the stirring members are provided on the first portion of the first center shaft 4 at intervals in the up-down direction. From this, a plurality of stirring pieces can form the bigger stirring district of scope in the reaction chamber, and then can realize the stirring to the reaction intracavity material more fast, and stirring efficiency is higher.

It should be noted that the reaction chamber in the reaction vessel 1 is substantially cylindrical, the top plate of the reaction vessel 1 is provided with a connecting hole, and the axis of the connecting hole is collinear with the axis of the reaction chamber. First motor is installed in reation kettle 1's top, and first motor links to each other with the upper end of first center pin 4, and first center pin 4 stretches into to the reaction intracavity by the connecting hole part.

As shown in fig. 1, in some embodiments, the stirring member includes a shear dispersion disc 3, the shear dispersion disc 3 includes a disc body 303, a plurality of upper serrations 301 and a plurality of lower serrations 302, and the plurality of upper serrations 301 and the plurality of lower serrations 302 are alternately provided on the disc body 303 in a circumferential direction of the disc body 303. Upper teeth 301 extend upwardly and outwardly from disc 303 and lower teeth 302 extend downwardly and outwardly from disc 303. That is to say, the upper saw teeth 301 and the lower saw teeth 302 on the disk 303 are distributed in a vertically staggered manner, so that the stirring area formed by the shearing dispersion disk 3 is larger, and the stirring of the material is better completed. Moreover, when the shearing dispersion disc 3 is driven by the first motor to rotate at a high speed, the upper saw teeth 301 and the lower saw teeth 302 can stir and mix materials in the reaction cavity, and can shear the materials. The upper saw teeth 301 and the lower saw teeth 302 can realize the function of strongly dispersing high-viscosity materials and the functions of crushing and refining high-solid materials, so that the surface roughness of material particles is further increased, and the specific surface area of the materials is improved. From this, shearing dispersion impeller 3 can realize the homogeneous mixing and the abundant reaction to the material better.

Specifically, the number of the shear dispersion discs 3 may be two, and the two shear dispersion discs 3 are provided at intervals in the axial direction of the first center shaft 4. The upper saw teeth 301 and the lower saw teeth 302 are distributed at equal intervals along the circumferential direction of the disc 303 and are connected to the outer edge of the disc 303.

As shown in FIG. 1, in some embodiments, both the upper teeth 301 and the lower teeth 302 are angled in the direction of rotation of the disc 303. That is, the sharp-angled positions of the upper saw teeth 301 and the lower saw teeth 302 (or the shearing parts of the upper saw teeth 301 and the lower saw teeth 302) face the rotating direction of the disc 303, and when the disc 303 rotates, the sharp-angled positions of the upper saw teeth 301 and the lower saw teeth 302 substantially face the material to be stirred, so that the material is sheared more directly, and the shearing efficiency is higher.

It should be noted that, be equipped with the mounting hole on the disk body 303, cut the connecting hole that dispersion impeller 3 was equipped with the perisporium that runs through the mounting hole, first center pin 4 is equipped with the screw hole, cuts dispersion impeller 3 and establishes on first center pin 4 through the mounting hole cover, cuts dispersion impeller 3 and links to each other with first center pin 4 through passing the connecting hole and with screw hole screw-thread fit's bolt.

From this, it links to each other with 4 detachably of first center pin to cut dispersion impeller 3 through setting up, has made things convenient for the maintenance and the change of cutting dispersion impeller 3, and then can change corresponding shearing dispersion impeller 3 to the different stirring material of treating to realize stirring more fast and more effectively and cut the difference. Moreover, when the material is the less solution of viscosity or the colloid that does not need the stirring, can pull down shearing dispersion impeller 3 from first center pin 4, only realize the simple mixture to this material through scraping wall spare and lifting member, do not shear sheltering from of dispersion impeller 3 this moment, scrape wall spare and lifting member and be better to the mixed effect of material.

As shown in fig. 1, in some embodiments, the apparatus 100 for producing a heavy metal passivator further includes a second central shaft 8, the second central shaft 8 is sleeved on the first central shaft 4, a first portion of the second central shaft 8 extends into the reaction chamber, and the wall scraping member is installed on the first portion of the second central shaft 8. The second driving member 5 is a second motor, the second driving member 5 is connected to the second central shaft 8 by a transmission member extending in the horizontal direction, and the first driving member 2 and the second driving member 5 are arranged in the horizontal direction. That is, the second central shaft 8 extends in the vertical direction, the upper section of the second central shaft 8 is located above the reaction vessel 1 and connected to the second motor, and the lower section of the second central shaft 8 forms the first portion for connecting to the wall scraping member.

From this, through setting up first center pin 4 and 8 coaxial settings of second center pin, the structure of scraping wall spare and stirring piece in the reaction chamber is compacter, and reation kettle 1's volume is littleer, has further reduced the cost of manufacture of heavy metal passivator apparatus for producing 100, and industrialization and scale up are more easy. Moreover, the stirring piece is driven by the first motor through the arrangement, the wall scraping piece is driven by the second motor, and the rotating speeds of the stirring piece and the wall scraping piece can be flexibly adjusted. If the stirring piece keeps rotating at a high speed, the wall scraping piece can rotate at a lower rotating speed according to the bonding speed of the materials on the wall surface of the reaction cavity, so that the materials can be continuously scraped away from the wall surface of the reaction cavity while the materials are efficiently stirred, and the processing cost is reduced.

Specifically, the driving medium is preferably a belt, the second motor is installed above the reaction kettle 1 and located beside the first motor, and the second central shaft 8 is matched with the connecting hole of the reaction kettle 1 through a bearing. The production device 100 of the heavy metal passivator also comprises a speed reducer, a driving wheel and a driven wheel. The reduction gear is installed on reation kettle 1, and the second motor links to each other with the input shaft of reduction gear, and the output shaft of reduction gear links to each other with the action wheel, follows the cooperation of driving wheel on the upper segment of second center pin 8, and the action wheel is connected to the belt and follows the driving wheel. Therefore, the wall scraping piece is ensured to stably rotate at low speed.

In some embodiments, the heavy metal deactivator production apparatus 100 further comprises a mounting bracket 6, the mounting bracket 6 is connected to the outer peripheral wall of the second central shaft 8, and the wall scraping member is detachably provided on the mounting bracket 6. Therefore, the wall scraping piece is convenient to disassemble, assemble and replace.

In particular, the mounting frame 6 is preferably made of a material having a higher strength and hardness (e.g., metal), and the wall hanging member is preferably made of a material having a higher wear resistance and a lower cost (e.g., plastic). Therefore, the manufacturing cost of the production device 100 for the heavy metal passivator is further reduced.

It should be noted that the wall hanging piece may be integrally formed with the mounting frame 6. I.e. the mounting frame 6 extends towards and adjacent to the wall of the reaction chamber.

In some embodiments, the mounting bracket 6 includes a bracket body including a first upright portion 601, a second upright portion 602, and a first connecting portion 603, a second connecting portion 604, and a third connecting portion 605. A first end of first connecting portion 603 is connected to a lower end of first upright portion 601, and a second end of first connecting portion 603 is connected to a lower end of second upright portion 602. Namely, the frame body is U-shaped. Optionally, the first connection portion 603 is arc-shaped. That is, when the bottom wall surface of the reaction chamber is an arc surface, the shape of the first connection portion 603 matches the bottom wall surface of the reaction chamber.

A first end of the second connecting portion 604 is connected to an upper end of the first vertical portion 601, and a second end of the second connecting portion 604 is connected to an outer peripheral wall of the second center shaft 8. A first end of the third connecting portion 605 is connected to an upper end of the second vertical portion 602, and a second end of the third connecting portion 605 is connected to the outer peripheral wall of the second center shaft 8. Thereby, the connection of the frame body to the first portion of the second central shaft 8 is completed.

The wall scraping member comprises a first side scraping plate 9, a second side scraping plate 10 and a bottom scraping plate 11, the first side scraping plate 9 is connected with the upper half section of the first vertical portion 601, the second side scraping plate 10 is connected with the lower half section of the second vertical portion 602, and the bottom scraping plate 11 is connected with the first connecting portion 603. That is, the first side scraper 9 is used for scraping off the material adhered to the side wall surface of the upper half section of the reaction chamber, the second side scraper 10 is used for scraping off the material adhered to the side wall surface of the lower half section of the reaction chamber, and the bottom scraper 11 is used for scraping off the material adhered to the bottom wall surface of the reaction chamber. Therefore, the wall surface of the reaction cavity is fully covered, the wall scraping effect is better, and the uniform mixing of materials is further ensured. Moreover, the first side scraper 9 and the second side scraper 10 are arranged in a left-right asymmetric mode, so that the second central shaft 8 is ensured to rotate stably, the consumption of wall scraping materials is reduced, and the manufacturing cost of the heavy metal passivator production device 100 is further reduced.

Specifically, the first side scraper 9 and the second side scraper 10 are both vertically extending straight plates, and the bottom scraper 11 is an arc plate matched with the bottom wall surface of the reaction chamber. The first side blade 9 is connected to the first upright portion 601 by a bolt, the second side blade 10 is connected to the second upright portion 602 by a bolt, and the bottom blade 11 is connected to the first connecting portion 603 by a bolt.

In some embodiments, the third drive member is a second motor and the helical lifting member is mounted on the mounting frame 6. That is to say the third drive element and the second drive element 5 are one and the same motor, and the helical lifting element is connected to the second central shaft 8 via the mounting frame 6. From this, promote the piece and scrape wall spare and rotate with fast under the drive of second motor to will keep away from jointly and cut 3 stirring regions's of dispersion impeller material and carry to the stirring region, and then guarantee that the material in the reaction chamber receives the probability unanimity roughly of 3 stirring and shearing of shear dispersion impeller, further guaranteed the homogeneous mixing of material.

As shown in fig. 1, in some embodiments, the lifting members are two and are a first lifting member and a second lifting member, respectively. The lower end of the first lift member is connected to the lower end of the first vertical portion 601, the middle of the first lift member is connected to the middle of the second vertical portion 602, and the upper end of the first lift member is connected to the upper end of the first vertical portion 601. The lower end of the second lift member is connected to the lower end of second upright portion 602, the middle of the second lift member is connected to the middle of first upright portion 601, and the upper end of the second lift member is connected to the upper end of second upright portion 602. Therefore, the first lifting piece and the second lifting piece are more stably installed on the frame body. Moreover, the first lifting piece and the second lifting piece can jointly complete the lifting of the materials at the bottom of the reaction cavity, the lifting effect is better, and the mixing efficiency of the materials is effectively improved.

Specifically, the first lifting member and the second lifting member are preferably arranged to have the same size and shape and the same rotation direction, such as both left-handed screws or both right-handed screws. At this time, the axis of the first lift, the axis of the second lift, and the axis of the second center shaft 8 are collinear.

In some embodiments, the lifting member is a ribbon 7 and the agitating member is located inside the ribbon 7. The spiral belt 7 and the stirring piece do not interfere with each other, and most of the materials at the bottom of the reaction cavity are pushed to the stirring area positioned at the inner side of the spiral belt 7 by the spiral belt 7 after being lifted by the spiral belt 7, so that the mixing efficiency of the materials is higher.

It should be noted that the lifting member can also lift the materials at the bottom of the reaction chamber to the stirring zone by reciprocating up and down in the reaction chamber.

In some embodiments, a top plate of the reaction vessel 1 is provided with a feeding port 101 for feeding materials into the reaction chamber, and a bottom plate of the reaction vessel 1 is provided with a discharging port 102 for discharging the mixed materials out of the reaction chamber.

The following describes a production method of a heavy metal passivator according to an embodiment of the present invention, which utilizes the above production apparatus 100 for a heavy metal passivator, including the following steps:

adding the powdery material and the alkali solution into the reaction chamber so as to modify the material by using the alkali solution. And controlling the stirring piece to work so as to stir the material and the alkali solution to form slurry. The wall scraping piece is controlled to work so as to scrape off the slurry on the wall surface of the reaction cavity. The lifting member is controlled to operate to lift the slurry at the bottom in the reaction chamber. Therefore, the stirring piece, the wall scraping piece and the lifting piece work simultaneously, the material and the alkali solution are mixed to form more uniform and stable slurry, the specific surface area of the material is increased, the active sites are increased, and the modification effect of the material is improved.

And continuously adding a modifier into the reaction cavity to further modify the material.

And stopping the stirring piece, and continuing to work the wall hanging piece and the lifting piece so as to enable the slurry to be aged uniformly. Therefore, the deposition of materials with higher density in the slurry is avoided, and the chemical combination in the slurry is convenient.

Stopping the work of the wall scraping piece and the lifting piece, discharging the slurry from the reaction chamber, and then carrying out filter pressing, washing and drying treatment. Thereby obtaining the heavy metal passivator.

According to the utility model discloses heavy metal passivator production method, through the heavy metal passivator apparatus for producing 100 who adopts above-mentioned embodiment, and then can realize the homogeneous mixing to no matter be high viscosity material or high solid material to produce the heavy metal passivator of more formulas, be particularly suitable for the formula of higher concentration, and then reduced follow-up drying energy consumption and waste water treatment volume, the range of application is wide.

The material can be natural cellulose raw material, and the natural cellulose raw material can be any one or more of wood chips, rice straws, wheat straws, corn straws and the like.

Or the material can also be an environmental mineral raw material, and the environmental mineral raw material can be any one or more of bentonite, diatomite, zeolite, sepiolite, attapulgite, apatite, vermiculite, tourmaline, kaolin, quartz sand, calcium carbonate, rectorite, graphite, barite, manganese ore, iron oxide mineral, illite, dolomite, fly ash, coal gangue, red mud, tailings, waste stone and the like.

In some embodiments, the alkali solution is a 10% -50% NaOH or KOH solution, and the slurry has a solids content of 50-360g/L before the modifier is added to the reaction chamber. Therefore, more uniform and stable slurry can be formed, and the modification effect on the material is ensured.

In some embodiments, the stirring member, the scraping member, and the lifting member are operated for 15 to 60 minutes before the modifier is added to the reaction chamber. Therefore, the slurry formed by mixing the material and the alkali solution is more uniform, the specific surface area of the material is larger, and the modification effect is better.

In some embodiments, the stirring member operates at a speed of 300-1700rpm, the lifting member is rotatably disposed in the reaction chamber, and the scraping member and the lifting member each operate at a speed of 30-120 rpm. Thereby ensuring uniform mixing of the slurry in the reaction chamber.

In some embodiments, the modifier is aluminum sulfate solution or sodium metaaluminate solution, the addition amount of the modifier is 1% -10% of the material, and the addition time of the modifier is 15-60 min. That is to say, in the process of adding the modifier to the reaction chamber, stirring piece, wall scraping piece and promotion piece are all in operating condition to guarantee the even diffusion of modifier in thick liquids, realize the homogeneous mixing of modifier and thick liquids, guarantee the modification effect to the material wherein. In addition, the aluminum sulfate solution and the sodium metaaluminate solution have better modification effect on the materials.

In some embodiments, during the continuous addition of the modifier to the reaction chamber, a 20% NaOH solution or KOH solution, or a 95% to 98% sulfuric acid solution is added to the reaction chamber, so as to control the pH in the reaction chamber to 7.0 to 11.0. Therefore, when the pH value of the slurry is between 7.0 and 11.0, the aluminum sulfate solution or the sodium metaaluminate solution has better modification effect on the materials.

Specifically, during the addition of the modifier to the reaction chamber, whether to add a NaOH solution or a KOH solution or a sulfuric acid solution is determined according to the initial acidity or alkalinity of the slurry, and it is preferable to control the pH of the slurry in the reaction chamber to be maintained at 7.

In some embodiments, the reaction kettle 1 in the heavy metal deactivator production apparatus 100 is provided with a plurality of feed ports 101, when a 20% by mass NaOH solution or KOH solution is fed into the reaction chamber, the 20% by mass NaOH solution or KOH solution and the modifier are fed into the reaction chamber from different feed ports 101, and when a 95% to 98% by mass sulfuric acid solution is fed into the reaction chamber, the 95% to 98% by mass sulfuric acid solution and the modifier are fed into the reaction chamber from different feed ports 101. That is to say, the modifier and the acid solution or the alkali solution for adjusting the pH are separately and continuously added into the reaction cavity, compared with a mode of adding and mixing all at once, the uniform diffusion of the modifier and the acid solution or the alkali solution in the slurry is ensured, the advanced precipitation and agglomeration caused by the overhigh local concentration in the slurry are effectively avoided, the mass transfer and the heat transfer are more uniform, the operation is finer, and the product quality control is better.

In some embodiments, the hanging member and the lifting member continue to operate for 15-60min after the stirring member stops operating. Thereby ensuring more complete chemical bonding in the slurry.

The production process of the heavy metal passivator of the invention is described below with reference to specific examples, which are intended to illustrate and not limit the invention in any way.

Adding powdery materials and 30% KOH solution into a reaction cavity, and controlling the solid content of the formed slurry to be 100 g/L. The stirring member was controlled to rotate at 1350rpm and the scraping member and the lifting member were operated at 60rpm for 30min to form a slurry. Subsequently, the sodium metaaluminate solution is continuously added into the reaction cavity for 60min, and the total adding amount of the sodium metaaluminate solution is 2 percent of the material. While adding the sodium metaaluminate solution into the reaction cavity, adding a NaOH solution or a KOH solution with the mass concentration of 20% or a sulfuric acid solution with the mass concentration of 95-98% into the reaction cavity through different feed inlets 101 according to the initial pH of the slurry so as to keep the pH of the slurry in the reaction cavity at 7. And then, controlling the stirring piece to stop rotating, and stopping rotating the wall scraping piece and the lifting piece after continuously working for 30 min. And finally, discharging the slurry, and performing filter pressing, washing and drying to obtain the heavy metal passivator.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed 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 at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. A heavy metal passivator apparatus for producing, characterized by, includes:

the reaction kettle is provided with a reaction cavity;

the stirring piece is rotatably arranged in the reaction cavity;

the first driving piece is connected with the stirring piece so as to drive the stirring piece to rotate;

the wall scraping piece is rotatably arranged in the reaction cavity, and the edge of the wall scraping piece is adjacent to the wall surface of the reaction cavity;

the second driving piece is connected with the wall scraping piece so as to drive the wall scraping piece to rotate;

the lifting piece is arranged in the reaction cavity in a vertically movable mode, or the lifting piece is rotatably arranged in the reaction cavity and is in a spiral shape; and

a third drive member coupled to the lifting member.

2. The production apparatus of a heavy metal passivator according to claim 1, further comprising a first central shaft, wherein the first driving member is a first motor, the first driving member is connected with the first central shaft, wherein a first part of the first central shaft extends into the reaction chamber, the stirring member is installed on the first part of the first central shaft, the first central shaft extends in an up-down direction, the stirring members are multiple, and the stirring members are arranged on the first part of the first central shaft at intervals in the up-down direction.

3. A heavy metal passivator production apparatus according to claim 1 or 2 wherein the stirring member comprises a shear dispersion disc comprising:

a tray body; and

the upper saw teeth and the lower saw teeth are alternately arranged on the disc body along the circumferential direction of the disc body, the upper saw teeth extend upwards and outwards from the disc body, and the lower saw teeth extend downwards and outwards from the disc body.

4. The production apparatus of a heavy metal passivator of claim 3 wherein the upper and lower teeth are both inclined in the direction of rotation of the disc.

5. The production device of a heavy metal passivator according to claim 2, further comprising a second center shaft, wherein the second center shaft is sleeved on the first center shaft, a first portion of the second center shaft extends into the reaction cavity, the wall scraping member is mounted on the first portion of the second center shaft, the second driving member is a second motor, the second driving member is connected with the second center shaft through a driving member extending in a horizontal direction, and the first driving member and the second driving member are arranged in the horizontal direction.

6. The production device of the heavy metal passivator of claim 5, further comprising a mounting bracket connected to the outer peripheral wall of the second central shaft, the wall scraping member being detachably provided on the mounting bracket.

7. The heavy metal passivator production apparatus of claim 6, wherein the mounting bracket comprises:

the frame body comprises a first vertical part, a second vertical part and a first connecting part, wherein the first end part of the first connecting part is connected with the lower end part of the first vertical part, the second end part of the first connecting part is connected with the lower end part of the second vertical part, and optionally, the first connecting part is arc-shaped; and

second connecting portion and third connecting portion, the first end of second connecting portion with the upper end of first vertical portion links to each other, the second end of second connecting portion with the periphery wall of second center pin links to each other, the first end of third connecting portion with the upper end of the vertical portion of second links to each other, the second end of third connecting portion with the periphery wall of second center pin links to each other, wherein it includes first side scraper blade, second side scraper blade and end scraper blade to scrape the wall spare, first side scraper blade with first half of first vertical portion links to each other, second side scraper blade with the second half of vertical portion links to each other, end scraper blade with first connecting portion link to each other.

8. The apparatus for producing a heavy metal passivator of claim 7 wherein the third drive member is the second motor and the helical lifting member is mounted on the mounting bracket.

9. The production device of the heavy metal passivator of claim 8, wherein the lifting members are two and are respectively a first lifting member and a second lifting member, a lower end of the first lifting member is connected with a lower end of the first vertical portion, a middle part of the first lifting member is connected with a middle part of the second vertical portion, an upper end of the first lifting member is connected with an upper end of the first vertical portion, a lower end of the second lifting member is connected with a lower end of the second vertical portion, a middle part of the second lifting member is connected with a middle part of the first vertical portion, and an upper end of the second lifting member is connected with an upper end of the second vertical portion.

10. The heavy metal passivator production apparatus of claim 9, wherein the lifting member is a ribbon and the stirring member is located inside the ribbon.

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