CN115254350B - Thermal aluminum slag cooling device and method - Google Patents

Thermal aluminum slag cooling device and method Download PDF

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Publication number
CN115254350B
CN115254350B CN202210793400.7A CN202210793400A CN115254350B CN 115254350 B CN115254350 B CN 115254350B CN 202210793400 A CN202210793400 A CN 202210793400A CN 115254350 B CN115254350 B CN 115254350B
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China
Prior art keywords
cooling
cooler
guide plate
aluminum slag
conveying
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CN202210793400.7A
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CN115254350A (en
Inventor
赵洪亮
刘风琴
谢程明
李荣斌
谢明壮
吴泽港
吕晗
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University of Science and Technology Beijing USTB
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University of Science and Technology Beijing USTB
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/18—Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
    • B02C19/186—Use of cold or heat for disintegrating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/02—Feeding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
    • B02C23/12—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/005—Preliminary treatment of scrap
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B21/00—Obtaining aluminium
    • C22B21/0007—Preliminary treatment of ores or scrap or any other metal source
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/04—Working-up slag
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C2201/00—Codes relating to disintegrating devices adapted for specific materials
    • B02C2201/06—Codes relating to disintegrating devices adapted for specific materials for garbage, waste or sewage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Abstract

The invention provides a device and a method for cooling hot aluminum slag, wherein the device comprises the following steps: the conveying part is used for conveying the hot aluminum slag and cooling the crushing medium; the cooling part is connected with the conveying part and used for cooling the thermal aluminum slag; the cooling part comprises a cooler, an argon cooling part and a guide plate which are connected; the argon cooling part is used for providing a cooling medium argon for the cooler; the inlet of the cooler is connected with the conveying part, the guide plates are arranged in the cooler at intervals in a staggered mode, and the hot aluminum slag is cooled, crushed and screened step by step through the guide plates. The invention can complete cooling, crushing and screening in one device, reduces equipment and procedures, improves the separation efficiency of hot aluminum slag, reduces power consumption to reduce cost, realizes automatic cooling, separation and labor intensity of hot aluminum slag, improves the recovery rate of aluminum ash, reduces dust emission and solves the problem of low pollution treatment of hot aluminum ash.

Description

Thermal aluminum slag cooling device and method
Technical Field
The invention relates to the technical field of solid hazardous waste disposal in the aluminum industry, in particular to a device and a method for cooling hot aluminum slag.
Background
The production of raw aluminum and various aluminum processing materials is in the first place in the world. It is estimated that about 400 ten thousand tons of various aluminum ash (slag) solid wastes are discharged in the electrolytic aluminum, aluminum processing and reclaimed aluminum production processes in China. During the slag skimming and cooling process, the hot aluminum ash can generate a large amount of aluminum nitride due to the contact with nitrogen in the air. These aluminum nitrides react with moisture in the air during normal stacking to produce irritating ammonia gas, and if no special denitrification treatment process is adopted, the decomposition of aluminum nitride in aluminum ash (slag) requires a relatively long time.
The aluminum slag cooling method adopted in the related art mainly comprises water cooling and air cooling, most of water cooling treatment methods adopt a cooling cylinder, a cooling guide pipe is arranged in the cooling cylinder or a cavity is formed between the cooling cylinder and a cooling jacket, then a water inlet is arranged at the lower end of the cooling cylinder, and a water outlet is arranged at the upper end of the cooling cylinder, so that automatic cooling of thermal aluminum ash is realized. The cold air treatment method adopts the steps that equipment is connected with a blower, and air generated by the blower is contacted with aluminum ash through an air conveying pipe, so that the aim of cooling is fulfilled.
However, the water cooling mode has low heat transfer efficiency, needs a long ash cooling cylinder to prolong cooling time, occupies large area and has poor cooling effect. And the aluminum slag is directly sprayed in a spraying mode, but the cooling mode needs to consume a large amount of water, and a large amount of fluorine-containing and chlorine-containing wastewater can be produced, so that the pollution is large and the water treatment cost is high. The cooling efficiency of the air cooling treatment method is low, the cooling time of the massive aluminum slag is long, and meanwhile, the air blown in at the initial stage of cooling can react with the thermal aluminum ash to generate more aluminum nitride, so that the difficulty in the subsequent treatment and utilization of the aluminum ash is increased.
Disclosure of Invention
The invention aims to solve the technical problems of low heat transfer efficiency, long cooling ash cylinder for prolonging cooling time, large occupied area, poor cooling effect and the like of a water cooling mode by providing a hot aluminum slag cooling device and a hot aluminum slag cooling method.
The embodiment of the invention provides a thermal aluminum slag cooling device, which comprises:
the conveying part is used for conveying the hot aluminum slag and cooling the crushing medium;
the cooling part is connected with the conveying part and used for cooling the thermal aluminum slag;
the cooling part comprises a cooler, an argon cooling part and a guide plate which are connected;
the argon cooling part is used for providing cooling medium argon for the cooler;
the inlet of the cooler is connected with the conveying part, the guide plates are arranged in the cooler at intervals in a staggered mode, and the hot aluminum slag is cooled, crushed and screened step by step through the guide plates.
In an alternative embodiment, the conveying part comprises a transmission motor, a conveying belt, a conveying shaft and a shell;
the conveying motor is connected with the conveying shaft, the conveying belt is positioned on the conveying shaft, the conveying belt and the conveying shaft are both positioned in the shell, and the shell is connected with the cooler.
In an alternative embodiment, the shell is connected with the cooler at a first preset angle, and the upper end of the shell is provided with a feed inlet for the hot aluminum slag and the cooling crushing medium to enter.
In an alternative embodiment, the guide plate comprises a first guide plate and a second guide plate;
the first guide plate and the first surface of the inner wall of the cooler are arranged at a second preset angle, the second guide plate and the second surface of the inner wall of the cooler are arranged at a third preset angle, the first guide plate and the second guide plate are arranged in a staggered mode, a circulation gap is formed between the first guide plate and the second guide plate, and the circulation gap is used for passing through hot aluminum slag and cooling crushing medium;
the first face is opposite the second face.
In an alternative embodiment, the first preset angle and the second preset angle are both acute angles.
In an alternative embodiment, the first guide plate comprises a first sub-guide plate and a first sub-screen plate which are arranged at intervals, and the second guide plate comprises a second sub-guide plate and a second sub-screen plate which are arranged at intervals.
In an alternative embodiment, the diameters of the first and second sub-screening decks decrease sequentially from top to bottom.
In an alternative embodiment, the argon cooling part comprises an argon bottle, one end of the argon bottle is connected with an outlet of the cooler, and the other end of the argon bottle is connected with the bottom of the cooler.
In an alternative embodiment, the apparatus further comprises a cooling chain, the cooler outer wall having a housing, a gap between the housing and the cooler for cooling water to circulate to form the cooling chain.
In an alternative embodiment, the guide plates are provided with cooling water channels, the cooling water channels are communicated with a gap between the shell and the cooler, and the cooling water channels are used for cooling the hot aluminum slag passing through the guide plates.
The method for cooling the hot aluminum slag is also provided, and the device is adopted to cool the hot aluminum slag.
The device provided by the embodiment of the invention has at least the following beneficial effects:
according to the cooling device provided by the embodiment of the invention, the hot aluminum slag and the cooling crushing medium are conveyed to the cooling part through the conveying part, the argon cooling part is used for providing cooling medium argon for the cooler, and the multistage cooling and crushing of the hot aluminum slag are realized through the guide plates arranged at intervals of the cooling part. The cooling device provided by the embodiment of the invention can finish cooling, crushing and screening in one device, reduces equipment and procedures, improves the separation efficiency of hot aluminum slag, reduces power consumption to reduce cost, realizes automatic cooling and separation of hot aluminum slag, reduces labor intensity, improves aluminum ash recovery rate, reduces dust emission, reduces the generation amount of aluminum nitride in the cooling process of aluminum ash, and solves the problem of low pollution treatment of hot aluminum ash.
Drawings
FIG. 1 is a block diagram of a thermal aluminum dross cooling apparatus according to the invention.
[ reference numerals ]
1. A cooler; 101. a flow gap; 2. an argon cooling part; 3. a guide plate; 31. a first guide plate; 32. a second guide plate; 4. a screen; 5. and a conveying part.
Detailed Description
The invention will now be described in detail with reference to the drawings and to specific embodiments. While the invention has been described herein in terms of the preferred and preferred embodiments, the following embodiments are intended to be more illustrative, and may be implemented in many alternative ways as will occur to those of skill in the art; and the accompanying drawings are only for the purpose of describing the embodiments more specifically and are not intended to limit the invention specifically.
It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the relevant art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
Generally, the terminology may be understood, at least in part, from the use of context. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending at least in part on the context. In addition, the term "based on" may be understood as not necessarily intended to convey an exclusive set of factors, but may instead, depending at least in part on the context, allow for other factors that are not necessarily explicitly described.
It will be understood that the meanings of "on … …", "over … …" and "over … …" in this disclosure should be interpreted in the broadest sense so that "on … …" means not only "directly on" but also includes meaning "directly on" something with intervening features or layers therebetween, and "over … …" or "over … …" means not only "on" or "over" something, but also may include its meaning "on" or "over" something without intervening features or layers therebetween.
Furthermore, spatially relative terms such as "under …," "under …," "lower," "above …," "upper," and the like may be used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be otherwise oriented and the spatially relative descriptors used herein may similarly be interpreted accordingly.
In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, an embodiment of the present invention provides a thermal aluminum slag cooling device, including:
a conveying part 5 for conveying the hot aluminum slag and cooling the crushing medium;
the cooling part is connected with the conveying part 5 and is used for cooling the hot aluminum slag;
the cooling part comprises a cooler 1, an argon cooling part 2 and a guide plate 3 which are connected;
the argon cooling part 2 is used for providing a cooling medium argon for the cooler 1;
the inlet of the cooler 1 is connected with the conveying part 5, the guide plates 3 are arranged in the cooler 1 at intervals in a staggered mode, and the hot aluminum slag is cooled, crushed and screened step by step through the guide plates 3.
The device provided by the embodiment of the invention has at least the following beneficial effects:
according to the cooling device provided by the embodiment of the invention, the hot aluminum slag and the cooling crushing medium are conveyed to the cooling part through the conveying part 5, the argon cooling part 2 is used for providing cooling medium argon for the cooler 1, and the guide plates 3 arranged at intervals of the cooling part are used for realizing multistage cooling and crushing of the hot aluminum slag. The cooling device provided by the embodiment of the invention can finish cooling, crushing and screening in one device, reduces equipment and procedures, improves the separation efficiency of hot aluminum slag, reduces power consumption to reduce cost, realizes automatic cooling and separation of hot aluminum slag, reduces labor intensity, improves aluminum ash recovery rate, reduces dust emission, reduces the generation amount of aluminum nitride in the cooling process of aluminum ash, and solves the problem of low pollution treatment of hot aluminum ash.
The apparatus provided by embodiments of the present invention will be further explained and described below by alternative embodiments.
The cooling crushing medium provided by the embodiment of the invention is a steel ball, and the diameter of the steel ball is 3cm-10cm, and can be 3cm, 4cm, 5cm, 6cm, 7cm, 8cm, 9cm, 10cm and the like by way of example. The mass ratio of the steel ball to the hot aluminum slag is between 0.5 and 5, and can be 0.5, 0.7, 0.8, 1, 1.3, 1.5, 2, 2.3, 2.5, 2.7, 3, 3.5, 4, 4.5, 4.7, 4.9, 5 and the like by way of example. The steel ball is mixed with the hot aluminum slag, the hot aluminum slag is crushed through extrusion and abrasion of the steel ball and the hot aluminum slag, and the steel ball is contacted with the hot aluminum slag to accelerate heat transfer and cooling of the hot aluminum slag. The hot aluminum slag enters the cooler through the feeding hole of the conveying part 5, the cold steel balls and part of argon gas together for crushing and quick cooling, the crushed aluminum slag and steel balls are continuously crushed and screened under the action of gravity, and meanwhile, the argon gas continuously flows to the cooler through the air inlet at the bottom end of the cooler, so that the hot aluminum slag is quickly cooled and crushed to reach the corresponding required size, and the high-temperature argon gas after heat transfer with the hot aluminum slag flows out from the air outlet above the cooler, reaches the cooling part of the argon gas and is recycled again after being cooled, and the cooling effect of the argon gas in the cooling process can also avoid the nitrogen reaction in the aluminum slag and air.
Further, the thermal aluminum slag to be treated is put into a conveying part 5 and conveyed to the top of the cooler 1 through the conveying part 5; the hot aluminum slag and the steel balls enter a cooler 1 from a top feed inlet, argon is introduced into the bottom through an argon cooling part 2, and the hot aluminum slag, the steel balls and the gas move in countercurrent; in the process of moving from top to bottom, argon collides with the cold steel ball, is crushed and simultaneously transfers heat with the steel ball for cooling, and simultaneously, the introduced cold argon also transfers heat with the hot aluminum slag and the steel ball for cooling materials. According to the embodiment of the invention, the steel ball and the hot aluminum slag are mixed to perform the first cooling, and the bottom is introduced with the cooling argon to perform the second cooling, so that the cooling mode is increased, a separate cooling device is not required, and the cooling efficiency is improved.
Further, the cooler 1 provided in the embodiment of the present invention may be a vertical cuboid, and a feed inlet is formed on one side of the top, and is connected to the conveying portion 5.
In an alternative embodiment, the conveying part 5 comprises a drive motor, a conveyor belt, a conveying shaft and a housing;
the conveying motor is connected with the conveying shaft, the conveying belt is positioned on the conveying shaft, the conveying belt and the conveying shaft are both positioned in the shell, and the shell is connected with the cooling part.
Further, the feeding temperature of the thermal aluminum slag of the conveying part 5 is 600-1050 ℃, and the temperature of the thermal aluminum slag after final cooling of the device provided by the embodiment of the invention is 50-150 ℃.
It will be appreciated that the conveyor belt may be a conveyor chain made of a material having a high heat resistance, for example a conveyor chain supported by a stainless steel material, due to the high temperature of the hot aluminum slag entering the conveyor section 5. A conveying frame is arranged on the conveying chain, and the hot aluminum slag and the cooling crushing medium are placed in the conveying frame for conveying.
As an example, the conveyor motor may be disposed outside of the housing to reduce occupation of spatial locations within the housing.
In an alternative embodiment, the shell is connected with the cooler 1 at a first preset angle, and the upper end of the shell is provided with a feed inlet for hot aluminum slag and cooling crushing medium.
As an example, the first preset angle may be 30 ° -60 °, and may be 30 °, 35 °, 40 °, 45 °, 50 °, 55 °, 60 °, etc., as an example.
In an alternative embodiment, the guide plate 3 comprises a first guide plate 31 and a second guide plate 32;
the first guide plate 31 and the first surface of the inner wall of the cooler 1 are arranged at a second preset angle, the second guide plate 32 and the second surface of the inner wall of the cooler 1 are arranged at a third preset angle, the first guide plate 31 and the second guide plate 32 are arranged in a staggered mode, a circulation gap 101 is arranged between the first guide plate 31 and the second guide plate 32, and the circulation gap 101 is used for passing through hot aluminum slag and cooling crushing medium;
the first face is opposite to the second face.
The cooling wall provided in the embodiment of the present invention may be in a cuboid shape, where the first surface is opposite to the second surface, and the first guide plate 31 and the second guide plate 32 are respectively disposed on the first surface and the second surface. And the first guide plate 31 and the second guide plate 32 form a zigzag shape sliding downwards so as to ensure that the hot aluminum slag can pass through screening and crushing smoothly.
In an alternative embodiment, the first preset angle and the second preset angle are acute angles, and the second preset angle and the third preset angle are acute angles, so as to ensure that the first guide plate 31 and the second guide plate 32 incline downwards, and ensure that the hot aluminum slag and the cooling crushing medium move downwards. The second preset angle and the third preset angle may be, for example, 30 ° -60 °, and may be, for example, 30 °, 35 °, 40 °, 45 °, 50 °, 55 °, 60 °, and so on.
In an alternative embodiment, the flow gap 101 is no less than the length of the largest of the hot aluminum dross and no more than one time the length of the smallest of the hot aluminum dross.
It will be appreciated that the hot aluminum slag will eventually flow to the bottom of the cooler 1 through the circulation gap 101, so the circulation gap 101 must ensure that the hot aluminum slag normally passes through, but the circulation gap 101 must not be too large, which would reduce the crushing efficiency of the steel balls on the hot aluminum slag.
In an alternative embodiment, the circulation gaps 101 provided in the embodiment of the invention can be sequentially reduced along the top-to-bottom direction of the cooler 1, and considering that the hot aluminum slag is continuously crushed in the top-to-bottom direction, the size of the hot aluminum slag is continuously reduced, and by setting the circulation gaps 101 to be continuously reduced, the crushing efficiency of the hot aluminum slag can be improved, the contact area between the hot aluminum slag and the steel balls can be further increased, and the cooling efficiency is improved.
In an alternative embodiment, the first guide plate 31 comprises a first sub-guide plate and a first sub-screen plate arranged at intervals, and the second guide plate 32 comprises a second sub-guide plate and a second sub-screen plate arranged at intervals.
The first guide plate 31 provided by the embodiment of the invention can be a combination of a screen plate and a guide plate 3, namely that a plurality of groups of guide plates 3 are separated from the screen plate, namely that the thermal aluminum slag is screened layer by layer, and the thermal aluminum slag which has reached the standard size can be screened to the next layer of guide plate 3 through the next layer of screen plate to be crushed and cooled, so that the screening and cooling efficiency is improved.
In an alternative embodiment, the diameters of the first and second sub-screening decks decrease sequentially from top to bottom.
It can be understood that the thermal aluminum slag is continuously crushed when moving from top to bottom, and the size is continuously reduced, so that the diameters of the first sub-sieve plate and the second sub-sieve plate are sequentially reduced from top to bottom, and the screening efficiency of the thermal aluminum slag is improved. It should be noted that, the diameters of the first sub-sieve plate and the second sub-sieve plate provided by the embodiment of the invention can be determined according to the overall condition of the thermal aluminum slag to be cooled, and the embodiment of the invention is not limited in number.
In an alternative embodiment, the argon cooling part 2 comprises an argon cylinder, one end of which is connected to the outlet of the cooler 1 and the other end of which is connected to the bottom of the cooler 1.
The cooling part can be provided with cooling argon through the argon bottle, the cooling argon is introduced with gas from the bottom of the cooler 1 from bottom to top and is mixed with hot aluminum slag from top to bottom at the top of the cooler 1 for cooling, and the cooled argon is recycled through the paper argon bottle at the outlet at the top of the cooler 1. The argon plays a role in cooling on one hand, plays a role in protecting atmosphere in the process on the other hand, and prevents hot aluminum slag from contacting nitrogen in air to generate aluminum nitride. An exhaust port of argon is arranged at the top of the cooler, and part of the argon enters the cooler and is used for protecting hot aluminum slag from contacting with air as little as possible in the conveying process; the other part of argon is recycled back to the air inlet of the cooler after being cooled, and a part of fresh argon is also supplemented.
In an alternative embodiment the device further comprises a cooling chain, the outer wall of the cooler 1 having a housing, the gap between the housing and the cooler 1 being used for cooling water circulation to form the cooling chain.
According to the embodiment of the invention, the outer wall of the cooler 1 is provided with the shell, so that the cooling argon and the steel balls can be cooled simultaneously, the cooling efficiency is improved, an extra cooling device is not required to be additionally arranged in a cooling chain, the space occupation rate of the device is reduced, and the cooling cost is reduced.
In an alternative embodiment, the guide plates 3 are provided with cooling water channels, and the cooling water channels are communicated with a gap between the shell and the cooler 1, and are used for cooling the hot aluminum slag passing through the guide plates 3.
It can be understood that the hot aluminum slag flows into the bottom of the cooler 1 from top to bottom through the guide plate 3, and the embodiment of the invention further cools the hot aluminum slag contacted with the guide plate 3 by arranging cooling water channels on two sides of the guide plate 3, thereby improving the cooling efficiency, and reducing the cooling cost without additionally arranging a cooling device.
The bottom of the cooler provided by the embodiment of the invention is provided with the discharge port, and the cooled and screened hot aluminum slag is treated through the discharge port. The bottom of the cooler is provided with a screen 4, the aperture of the screen 4 is larger than that of a screen plate positioned on the screen 4, and the screen 4 is vertically connected with the first surface and the second surface of the inner wall of the cooler. The steel balls are trapped by the screen 4 and then collected, and aluminum ash is recovered at the bottom through the screen 4. The aperture of the screen 4 is smaller than the size of the steel balls. The large thermal aluminum slag with the bottom not passing through the screen 4 returns to be reused together with the steel balls.
The foregoing is a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention and are intended to be comprehended within the scope of the present invention.

Claims (4)

1. A thermal aluminum dross cooling apparatus, the apparatus comprising:
the conveying part is used for conveying the hot aluminum slag and cooling the crushing medium;
the cooling part is connected with the conveying part and used for cooling the thermal aluminum slag;
the cooling part comprises a cooler, an argon cooling part and a guide plate which are connected;
the argon cooling part is used for providing cooling medium argon for the cooler;
the inlet of the cooler is connected with the conveying part, the guide plates are arranged in the cooler at intervals in a staggered mode, and the hot aluminum slag is cooled, crushed and screened step by step through the guide plates;
the conveying part comprises a transmission motor, a conveying belt, a conveying shaft and a shell;
the conveying motor is connected with the conveying shaft, the conveying belt is positioned on the conveying shaft, the conveying belt and the conveying shaft are both positioned in the shell, and the shell is connected with the cooler;
the shell is connected with the cooler at a first preset angle, and the upper end of the shell is provided with a feed inlet which is used for the entry of the thermal aluminum slag and the cooling crushing medium;
the guide plate comprises a first guide plate and a second guide plate;
the first guide plate and the first surface of the inner wall of the cooler are arranged at a second preset angle, the second guide plate and the second surface of the inner wall of the cooler are arranged at a third preset angle, the first guide plate and the second guide plate are arranged in a staggered mode, a circulation gap is formed between the first guide plate and the second guide plate, and the circulation gap is used for passing through hot aluminum slag and cooling crushing medium;
the first face is opposite to the second face;
the first preset angle and the second preset angle are acute angles;
the first guide plate comprises a first sub-guide plate and a first sub-screen plate which are arranged at intervals, and the second guide plate comprises a second sub-guide plate and a second sub-screen plate which are arranged at intervals;
the diameters of the first sub-sieve plate and the second sub-sieve plate are sequentially reduced from top to bottom.
2. The apparatus according to claim 1, wherein the argon cooling part comprises an argon bottle, one end of which is connected to an outlet of the cooler, and the other end of which is connected to a bottom of the cooler.
3. The thermal state aluminum dross cooling apparatus of claim 1, further comprising a cooling chain, the cooler outer wall having a housing, a gap between the housing and the cooler for cooling water to circulate to form the cooling chain.
4. A method for cooling hot aluminum slag, characterized in that the method uses the device according to any one of claims 1-3 to cool the hot aluminum slag.
CN202210793400.7A 2022-07-07 2022-07-07 Thermal aluminum slag cooling device and method Active CN115254350B (en)

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Citations (9)

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