CN112844725B

CN112844725B - Rhenium recycling device with high recovery rate

Info

Publication number: CN112844725B
Application number: CN202110135637.1A
Authority: CN
Inventors: 邹晨晨; 王胜利; 侯明旺; 罗伟伟; 黄艳琴
Original assignee: Henan Feiditai Environmental Science And Technology Co ltd
Current assignee: Henan Feiditai Environmental Science And Technology Co ltd
Priority date: 2021-02-01
Filing date: 2021-02-01
Publication date: 2022-04-15
Anticipated expiration: 2041-02-01
Also published as: CN112844725A

Abstract

The invention discloses a rhenium recycling device with high recovery rate, which belongs to the field of energy conservation and environmental protection and comprises a shell, and an air inlet cavity, a pretreatment cavity and a reaction cavity which are arranged in the shell, wherein a plurality of pretreatment mechanisms are arranged in the pretreatment cavity, an air passage communicated with the air inlet cavity is formed in each pretreatment mechanism, a feeding pipe arranged in the shell is arranged in the air passage, a plurality of screens are arranged on a partition plate between the pretreatment cavity and the reaction cavity, a heating mechanism used for heating the reaction cavity is arranged below the shell, and an air conveying pipeline communicated with the reaction cavity is arranged on the side surface of the reaction cavity. The pretreatment mechanism that is driven by hydrogen carries out the breakage to ammonium perrhenate crystal particles for ammonium perrhenate particle diameter reduces, just can fully react with hydrogen in the short time, avoids ammonium perrhenate particle to subside and piles up behind the reaction chamber, reduces the problem of reaction rate, and process rate is fast, and is high to the recycle ratio of rhenium, makes the annual output of rhenium increase.

Description

Rhenium recycling device with high recovery rate

Technical Field

The invention relates to a recycling device, in particular to a rhenium recycling device with high recovery rate.

Background

Rhenium is a silvery-white heavy metal and is a by-product of molybdenum and copper refining processes. Typically, the rhenium content of molybdenite concentrates is between 0.001% and 0.031%. The rhenium content of the molybdenum concentrate selected from the porphyrite copper ore can reach 0.16 percent. In addition, smelting dust and slag of certain copper ores, platinum group metal ores, niobium ores and zinc blende ores, waste liquid for treating low-grade molybdenum ores and rhenium-containing waste materials such as platinum-rhenium catalysts and rhenium-containing waste alloys can also be used as the rhenium production raw materials. The extraction method of rhenium is determined according to the rhenium-containing raw material and the rhenium product. When extracting rhenium, firstly, the rhenium-containing solution is prepared from rhenium-containing raw materials, the solution is separated and purified to extract pure rhenium compound, then the rhenium powder is prepared by a hydrogen reduction method, an aqueous solution electrolysis method and a halide thermal dissociation method, and then the rhenium powder is processed into the material by a powder metallurgy method.

The hydrogen reduction method mainly utilizes hydrogen to reduce ammonium perrhenate at high temperature to generate metal powder rhenium, but when the extracted rhenium compound ammonium perrhenate recovered is reduced by hydrogen, the ammonium perrhenate crystal particles are large, hydrogen is difficult to fully react with the ammonium perrhenate, so that the utilization rate of the ammonium perrhenate is not high, and in addition to the initial reaction, the large ammonium perrhenate particles react with the hydrogen to be completely reacted, so that the time is long, the reaction rate is slow, the production efficiency is reduced, the annual output of rhenium is reduced, and the recovery utilization rate of rhenium is reduced.

Disclosure of Invention

The invention aims to provide a rhenium recycling device with high recovery rate, which is used for solving the problems in the background technology.

In order to solve the defects of the prior art, the invention provides the following technical scheme:

the utility model provides a rhenium retrieval and utilization device of high rate of recovery, includes the shell and sets up admit air chamber, preliminary treatment chamber and the reaction chamber in the shell, a plurality of preliminary treatment mechanisms are installed to the preliminary treatment intracavity, every the air flue with admit air chamber intercommunication is all seted up in the preliminary treatment mechanism, be provided with the filling tube of installing in the shell in the air flue, the filling tube runs through the shell upper end, and is provided with the apron on the filling tube, the air inlet with hydrogen feed mechanism intercommunication is seted up to the side in chamber of admitting air, install a plurality of screens with a plurality of preliminary treatment mechanism one-to-ones on the baffle between preliminary treatment chamber and the reaction chamber, the below of shell is provided with the heating mechanism who is used for heating the reaction chamber, the side-mounting of reaction chamber has the gas transmission pipeline rather than the intercommunication.

As a modified scheme of the invention: pretreatment mechanism includes the mount pad of fixed mounting in the preliminary treatment intracavity, the bottom surface of mount pad is rotated and is installed the swivel mount, be provided with the air flue that communicates with the chamber of admitting air in mount pad and the swivel mount, swivel mount and preliminary treatment chamber intercommunication are run through to the bottom of filling tube, evenly be provided with a plurality of fumaroles with the air flue intercommunication on the transposable periphery, it is a plurality of the fumarole slope sets up in the swivel mount, a plurality of grinding balls are installed to transposable bottom surface equipartition.

As a further improvement of the invention: the bottom surface of the rotary seat is fixedly provided with a plurality of material pushing plates, a plurality of grinding balls and a plurality of material pushing plates are annularly and uniformly distributed at the bottom of the rotary seat, rings formed by the grinding balls and rings formed by the material pushing plates are alternately distributed, and each grinding ball and each material pushing plate in adjacent rings are arranged in a staggered mode.

As a further improvement of the invention: and a baffle ring is fixedly arranged on the circumferential surface of the rotating seat, and the bottom surface of the baffle ring is flush with the lowest points of the grinding balls and the material pushing plate.

As a further scheme of the invention: the screen cloth is characterized in that a shield is covered above the screen cloth, the bottom of the shield is fixedly installed on the peripheral line of the screen cloth, and the top of the shield is fixedly installed on the installation seat.

As a further scheme of the invention: the gas transmission pipeline is communicated with the inside of the secondary recovery box, a baffle plate arranged above an inlet of the gas transmission pipeline is arranged in the reaction cavity, the baffle plate is inclined towards the direction far away from the gas transmission pipeline, a filter screen is fixedly arranged between the bottom of the baffle plate and the inner wall of the shell, one side of the upper end of the secondary recovery box far away from an outlet of the gas transmission pipeline is fixedly provided with an air outlet communicated with the inside of the secondary recovery box, and the air outlet is connected with an ammonia gas recovery device.

As an optimization scheme of the invention: the secondary recovery box is internally and fixedly provided with a mounting frame, and the mounting frame is rotatably provided with a gas breaking wheel arranged at the outlet of the gas transmission pipeline.

Compared with the prior art, the invention has the beneficial effects that:

pretreatment mechanism rotates by hydrogen drive, need not put the external power source, reduce power consumption, in addition by hydrogen driven pretreatment mechanism to ammonium perrhenate crystal particles carry out the breakage, make ammonium perrhenate particle diameter reduce, can fully react with hydrogen in the short time, in-process subsiding the reaction chamber just can fully react, it piles up to the back of reaction chamber to avoid ammonium perrhenate particle subside, reduce the problem of reaction speed, the reaction rate is high, the process velocity is fast, high to the recycle rate of rhenium, and subside the rhenium purity in the reaction chamber bottom, make the annual output of rhenium increase.

Drawings

FIG. 1 is a front view of a high recovery rhenium recycling apparatus;

FIG. 2 is a schematic diagram of a pretreatment mechanism of a high recovery rhenium recycling device;

FIG. 3 is a view showing the internal structure of a rotary base of a rhenium recycling device with high recovery rate;

FIG. 4 is a schematic diagram of the bottom structure of a rotary base of a high recovery rhenium recycling apparatus;

FIG. 5 is a schematic view of the internal structure of a secondary collection box of a high recovery rhenium recycling device;

in the figure: 1-shell, 2-cover plate, 3-air inlet cavity, 4-charging tube, 5-mounting seat, 6-air flue, 7-shield, 8-pretreatment cavity, 9-reaction cavity, 10-screen, 11-air inlet, 12-air transmission pipeline, 13-baffle plate, 14-filter screen, 15-air jet hole, 16-swivel base, 17-baffle ring, 18-grinding ball, 19-material pushing plate, 20-secondary collecting box, 21-air outlet, 22-mounting frame and 23-gas breaking wheel.

Detailed Description

The present invention will be described in detail with reference to the following embodiments, wherein like or similar elements are designated by like reference numerals throughout the several views, and wherein the shape, thickness or height of the various elements may be expanded or reduced in practice. The examples are given solely for the purpose of illustration and are not intended to limit the scope of the invention. Any obvious modifications or variations can be made to the present invention without departing from the spirit or scope of the present invention.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Referring to fig. 1, the embodiment provides a high-recovery rhenium recycling device, which includes a housing 1, and an air inlet chamber 3, a pretreatment chamber 8 and a reaction chamber 9 disposed in the housing 1, a plurality of pretreatment mechanisms are arranged in the pretreatment cavity 8, an air passage 6 communicated with the air inlet cavity 3 is arranged in each pretreatment mechanism, a feed pipe 4 arranged in the shell 1 is arranged in the air passage 6, the feed pipe 4 penetrates through the upper end of the shell 1, and the upper end of the charging pipe 4 is provided with a cover plate 2, the side surface of the air inlet cavity 3 is provided with an air inlet 11 communicated with the hydrogen supply mechanism, a plurality of screens 10 which are in one-to-one correspondence with a plurality of pretreatment mechanisms are arranged on a clapboard between the pretreatment cavity 8 and the reaction cavity 9, a heating mechanism for heating the reaction cavity 9 is arranged below the shell 1, and a gas transmission pipeline 12 communicated with the reaction cavity 9 is arranged on the side surface of the reaction cavity 9. During the use, open apron 2, throw into ammonium perrhenate crystal particle from filling tube 4 in to preliminary treatment chamber 8, hydrogen feed mechanism lets into air inlet chamber 3 with hydrogen from air inlet 11, hydrogen shunts to different preliminary treatment mechanisms through a plurality of air flues 6 in air inlet chamber 3, mobile hydrogen drives preliminary treatment mechanism and rotates, pivoted preliminary treatment mechanism grinds breakage to the ammonium perrhenate crystal particle of its below, make broken granule fall into reaction chamber 9 through the screening of screen cloth 10, the heating mechanism of shell 1 bottom heats reaction chamber 9, make the ammonium perrhenate granule that falls into reaction chamber 9 react with hydrogen, generate rhenium, water and ammonia after the reaction, most rhenium that generate subsides in reaction chamber 9's bottom, part rhenium powder is taken away by the ammonia and gets into gas transmission pipeline 12 along with the ammonia. Pretreatment mechanism rotates by hydrogen drive, need not put the external power source, reduce power consumption, in addition by hydrogen driven pretreatment mechanism to ammonium perrhenate crystal particle breakage, make ammonium perrhenate particle diameter reduce, can be in the short time just fully react with hydrogen, make ammonium perrhenate particle get into reaction chamber 9 back from screen cloth 10, in-process that subsides reaction chamber 9 just can fully react, it piles up to subside reaction chamber 9 back to avoid ammonium perrhenate particle, reduce the problem of reaction rate, reaction rate is high, the process rate is fast, recycle rate to rhenium is high, and the rhenium purity of subsiding in reaction chamber 9 bottom is high, make the annual output of rhenium increase.

Referring to fig. 1-3, as an embodiment of the present invention: pretreatment mechanism includes mount pad 5 of fixed mounting in preliminary treatment chamber 8, the bottom surface of mount pad 5 is rotated and is installed swivel mount 16, be provided with the air flue 6 with the 3 intercommunications in air inlet chamber in mount pad 5 and swivel mount 16, swivel mount 16 and preliminary treatment chamber 8 intercommunication are run through to the bottom of filling tube 4, evenly be provided with a plurality of fumaroles 15 with 6 intercommunications of air flue on swivel mount 16's the periphery, it is a plurality of fumaroles 15 slope and set up in swivel mount 16, a plurality of grinding balls 18 are installed to swivel mount 16's bottom surface equipartition. During the use, hydrogen enters into swivel mount 16 through air flue 6 in, hydrogen in the swivel mount 16 sprays and goes out from fumarole 15, a plurality of fumaroles 15 slope settings, because hydrogen jet's thrust, make swivel mount 16 take place to rotate, pivoted swivel mount 16 drives a plurality of grinding balls 18 on its bottom surface and grinds ammonium perrhenate crystal particle on screen cloth 10, make the granule breakage diminish, the great ammonium perrhenate of diameter granule can not pass through screen cloth 10, constantly ground in succession on screen cloth 10, until the diameter is less than the aperture of screen cloth 10.

Please refer to fig. 2 and fig. 4, which illustrate another preferred embodiment of the present invention: the bottom surface of the rotating seat 16 is fixedly provided with a plurality of material pushing plates 19, a plurality of grinding balls 18 and a plurality of material pushing plates 19 are annularly and uniformly distributed at the bottom of the rotating seat 16, rings formed by the grinding balls 18 and rings formed by the material pushing plates 19 are alternately distributed, and each grinding ball 18 and each material pushing plate 19 in adjacent rings are arranged in a staggered manner. The circumferential surface of the rotating seat 16 is fixedly provided with a baffle ring 17, the bottom surface of the baffle ring 17 is flush with the lowest points of the grinding balls 18 and the material pushing plate 19, and the added baffle ring 17 can ensure that particles are positioned above the screen mesh 10 to the maximum extent. The pivoted swivel mount 16 drives grinding ball 18 and the scraping wings 19 of its bottom to rotate, ammonium perrhenate granule falls on screen cloth 10 through filling tube 4, constantly radiate to the outside through the grinding of grinding ball 18 and scraping wings 19, and grinding ball 18 and the scraping wings 19 of crisscross laying divide into a plurality of regions with the upper surface of screen cloth 10, prevent ammonium perrhenate granule gathering, grind inhomogeneous problem, when ammonium perrhenate granule meets scraping wings 19, can inwards dial back, make the ammonium perrhenate on screen cloth 10 surface obtain to round trip to grind.

Please refer to fig. 2, which is another preferred embodiment of the present invention: the screen cloth 10 is covered with a shield 7, the bottom of the shield 7 is fixedly arranged on the peripheral line of the screen cloth 10, and the top of the shield 7 is fixedly arranged on the mounting seat 5. After having increased guard shield 7, at first can block that the ammonium perrhenate granule of screen cloth 10 upper surface leaves screen cloth 10, make the ammonium perrhenate granule finally all fall on screen cloth 10 is on the surface, secondly in order to prevent hydrogen and hydrogen drive ammonium perrhenate granule escape, guarantee that hydrogen and ammonium perrhenate granule can all enter into reaction chamber 9 in, and the hydrogen that flows out from fumarole 15 can establish the within range backward flow at guard shield 7's cover, sweep the ammonium perrhenate granule on screen cloth 10, make the passing through screen cloth 10 that the ammonium perrhenate granule can be very fast, the speed that the ammonium perrhenate granule got into reaction chamber 9 is accelerated, accelerate the speed of production.

Referring to fig. 1 and 5, as a further preferred embodiment of the present invention: gas transmission pipeline 12 and the inside intercommunication of secondary collection box 20, be provided with the shielding plate 13 that the slope cover was located gas transmission pipeline 12 entry top in the reaction chamber 9, shielding plate 13 is to the direction slope of keeping away from gas transmission pipeline 12, fixed mounting has filter screen 14 between shielding plate 13's bottom and the shell 1 inner wall, one side fixed mounting that gas transmission pipeline 12 exported was kept away from to the upper end of secondary collection box 20 has the gas vent 21 with the inside intercommunication of secondary collection box 20, gas vent 21 is connected with ammonia recovery unit. The inside fixed mounting of secondary collection box 20 has mounting bracket 22, install the broken gas wheel 23 that sets up in gas transmission pipeline 12 exit in the rotation on mounting bracket 22. When the reaction chamber is used, ammonia gas generated by reaction enters the gas transmission pipeline 12 from the reaction chamber 9, in order to avoid the situation that ammonium perrhenate is taken away by hydrogen gas to enter the gas transmission pipeline 12 after reaction, the shielding plate 13 is additionally arranged, so that the ammonium perrhenate can enter a deep zone of the reaction chamber 9 and has enough reaction distance, in addition, in order to avoid the ammonia gas generated by the reaction from carrying away the rhenium powder generated by the reaction, a filter screen 14 is additionally arranged, the ammonia gas is filtered, so that more rhenium powder is left in the reaction chamber 9, the ammonia gas enters the secondary recovery box 20 through the gas transmission pipeline 12, and the gas breaking wheel 23 is blown to lead the gas breaking wheel 23 to rotate, the rotating gas breaking wheel 23 breaks up the bubbles of the ammonia gas entering the secondary recovery tank 20 to be fully contacted with the water in the secondary recovery tank 20, so that the rhenium powder possibly contained in the ammonia gas is remained in the water for further recovering the rhenium powder, and the ammonia gas escapes from the water surface and enters the ammonia gas recovery device from the exhaust port 21. The produced rhenium powder is recovered by nearly one hundred percent through the steps.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a rhenium retrieval and utilization device of high recovery rate, includes shell (1), its characterized in that still includes air intake chamber (3), preliminary treatment chamber (8) and reaction chamber (9) that set up in shell (1), install a plurality of pretreatment mechanisms in preliminary treatment chamber (8), every air flue (6) with air intake chamber (3) intercommunication is all seted up in the pretreatment mechanism, be provided with filling tube (4) of installing in shell (1) in air flue (6), filling tube (4) run through shell (1) upper end, and filling tube (4) upper end is provided with apron (2), air inlet (11) with hydrogen supply mechanism intercommunication are seted up to the side of air intake chamber (3), install on the baffle between preliminary treatment chamber (8) and reaction chamber (9) a plurality of screen cloth (10) that one-to-one correspond with a plurality of pretreatment mechanisms, the below of shell (1) is provided with the heating mechanism that is used for increasing the temperature to reaction chamber (9), a gas transmission pipeline (12) communicated with the reaction cavity (9) is arranged on the side surface of the reaction cavity;

pretreatment mechanism includes mount pad (5) of fixed mounting in preliminary treatment chamber (8), the bottom surface of mount pad (5) rotates and installs swivel mount (16), be provided with air flue (6) with air inlet chamber (3) intercommunication in mount pad (5) and swivel mount (16), swivel mount (16) and preliminary treatment chamber (8) intercommunication are run through to the bottom of filling tube (4), evenly be provided with a plurality of fumaroles (15) with air flue (6) intercommunication on the periphery of swivel mount (16), it is a plurality of fumaroles (15) slope and set up in swivel mount (16) for swivel mount (16) rotate, a plurality of grinding ball (18) are installed to the bottom surface equipartition of swivel mount (16).

2. The recycling apparatus of rhenium according to claim 1, wherein a plurality of material pushing plates (19) are fixedly installed on the bottom surface of the rotary seat (16), a plurality of grinding balls (18) and a plurality of material pushing plates (19) are annularly and uniformly distributed on the bottom of the rotary seat (16), the rings formed by the grinding balls (18) and the rings formed by the material pushing plates (19) are alternately distributed, and each grinding ball (18) and each material pushing plate (19) in the adjacent rings are alternately distributed.

3. The high-recovery rhenium recycling device according to claim 2, wherein a baffle ring (17) is fixedly arranged on the circumferential surface of the rotary seat (16), and the bottom surface of the baffle ring (17) is flush with the lowest points of the grinding balls (18) and the material pushing plate (19).

4. The high-recovery rhenium recycling device according to claim 1, wherein a shield (7) is covered above the screen (10), the bottom of the shield (7) is fixedly installed on the circumferential line of the screen (10), and the top of the shield (7) is fixedly installed on the installation seat (5).

5. The rhenium recycling device with high recovery rate according to claim 1, wherein the gas transmission pipeline (12) is communicated with the inside of the secondary recovery tank (20), a shielding plate (13) which is obliquely covered above an inlet of the gas transmission pipeline (12) is arranged in the reaction chamber (9), the shielding plate (13) is inclined towards a direction far away from the gas transmission pipeline (12), a filter screen (14) is fixedly arranged between the bottom of the shielding plate (13) and the inner wall of the shell (1), one side, far away from an outlet of the gas transmission pipeline (12), of the upper end of the secondary recovery tank (20) is fixedly provided with an exhaust port (21) communicated with the inside of the secondary recovery tank (20), and the exhaust port (21) is connected with an ammonia gas recovery device.

6. The high-recovery-rate rhenium recycling device according to claim 5, wherein a mounting frame (22) is fixedly installed in the secondary recovery tank (20), and a gas breaking wheel (23) arranged at an outlet of the gas transmission pipeline (12) is rotatably installed on the mounting frame (22).