CN111001816A - Graded screening system for screening metal powder based on gravity method - Google Patents

Graded screening system for screening metal powder based on gravity method Download PDF

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Publication number
CN111001816A
CN111001816A CN201911300981.0A CN201911300981A CN111001816A CN 111001816 A CN111001816 A CN 111001816A CN 201911300981 A CN201911300981 A CN 201911300981A CN 111001816 A CN111001816 A CN 111001816A
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CN
China
Prior art keywords
screening
smelting furnace
metal
molten metal
bin
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201911300981.0A
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Chinese (zh)
Inventor
程敬卿
王蓉蓉
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Wuhu Dingheng Material Technology Co ltd
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Wuhu Dingheng Material Technology Co ltd
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Priority to CN201911300981.0A priority Critical patent/CN111001816A/en
Publication of CN111001816A publication Critical patent/CN111001816A/en
Withdrawn legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00Making metallic powder or suspensions thereof
    • B22F9/02Making metallic powder or suspensions thereof using physical processes
    • B22F9/06Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/04Stationary flat screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46Constructional details of screens in general; Cleaning or heating of screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00Making metallic powder or suspensions thereof
    • B22F9/02Making metallic powder or suspensions thereof using physical processes
    • B22F9/06Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • B22F2009/0848Melting process before atomisation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00Making metallic powder or suspensions thereof
    • B22F9/02Making metallic powder or suspensions thereof using physical processes
    • B22F9/06Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • B22F2009/0896Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid particle transport, separation: process and apparatus

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  • Manufacture And Refinement Of Metals (AREA)

Abstract

The invention relates to a classifying and screening system for screening metal powder based on a gravity method, which comprises a sealed layered smelting furnace, wherein ore slag and molten metal are separated from the interior of the smelting furnace, the molten metal is directly introduced into a spray disk through a sealing pipe, atomized by a vortex cyclone formed by nitrogen in the spray disk to form metal powder, and sprayed to a screening bin which is transversely arranged and fixedly connected with the spray disk to perform classifying and screening of the gravity method. According to the invention, metal ores are accommodated in the sealed smelting furnace for closed smelting, so that on one hand, heat loss is avoided, and on the other hand, the harm of molten metal in a high-temperature state to workers is avoided. The invention also arranges the sealing pipe between the smelting furnace and the spray plate for directly guiding molten metal in the smelting furnace into the spray plate, thereby avoiding the problems of easy oxidation, cooling solidification and the like caused by pouring out from the smelting furnace, and simultaneously being easy to cause personnel scald and content reduction caused by leakage.

Description

Graded screening system for screening metal powder based on gravity method
Technical Field
The invention relates to the field of metal powder screening, in particular to a grading screening system for screening metal powder based on a gravity method.
Background
The metal powder screening method comprises the steps of smelting metal ores into molten metal through a smelting furnace, atomizing the molten metal into metal powder through cyclone formed by nitrogen, beating the metal powder into a screening bin, and automatically falling into different areas for screening according to the weight of metal powder particles.
The screening storehouse of present metal powder screening adopts vertically, this kind has made things convenient for the inflow of molten metal to atomize, nevertheless because all fall downwards and lead to the screening inaccuracy easily, current metal melting furnace sets up to uncovered formula for the convenience of material loading simultaneously, this kind is convenient for material loading and observation, but very unsafe, and temperature rise when not sealed heating is slow, is difficult to melt the metal ore, the molten metal after the while is smelted pours into the spray tray into through what topple over into in, very unsafe, and it solidifies to become cold easily.
Disclosure of Invention
The invention provides a grading screening system for screening metal powder based on a gravity method, aiming at meeting the requirements of clear screening grading of a screening bin and safer preparation and introduction of molten metal during screening of metal powder.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
a classified screening system for screening metal powder based on a gravity method comprises a sealed layered smelting furnace, wherein ore slag and molten metal are separated from the interior of the smelting furnace, the molten metal is directly led into a spray plate through a sealing pipe, and is atomized by a vortex cyclone formed by nitrogen in the spray plate to form metal powder, and meanwhile, the metal powder is sprayed into a screening bin which is transversely arranged and fixedly connected with the spray plate to carry out classified screening of the gravity method.
The smelting furnace comprises a heating device positioned below and a heating bin positioned above, wherein a filter screen for filtering slag and a guide plate for guiding molten metal are fixedly connected in the heating bin. The material of filter screen and baffle all sets up to the bright material of dioxide, and the melting point is higher than the melting point of molten steel, avoids being melted when the heating.
The baffle is provided with two sections, and fixes respectively the both sides of heated warehouses inner wall, the filter screen is located two between the baffle, just the filter screen with the baffle is the slope setting.
The guide plate is in the lowest department of heating chamber has seted up the outflowing hole, and this outflowing hole passes through the sealed tube intercommunication spout dish last ceramic discharge spout.
The sealing tube comprises a tube body and two sealing plugs, the sealing plugs are in threaded connection with the two ends of the outer wall of the tube body, and the two sealing plugs are respectively plugged into the outflow hole and the sealing holes formed in the spray disc.
The side of the smelting furnace is provided with a crane, and the crane is used for transferring metal ores on the ground to the smelting furnace on a high platform for heating.
The spraying disc is arranged on the bottom of the screening bin, the side, away from the spraying disc, of the screening bin is provided with an exhaust pipe for exhausting the inside air, and a plurality of lower discharging bins are sequentially arranged below the screening bin and used for storing metal powder after grading screening.
The invention has the beneficial effects that:
according to the invention, metal ores are accommodated in the sealed smelting furnace for closed smelting, so that on one hand, heat loss is avoided, and on the other hand, the harm of molten metal in a high-temperature state to workers is avoided.
The invention also arranges the sealing pipe between the smelting furnace and the spray plate for directly guiding molten metal in the smelting furnace into the spray plate, thereby avoiding the problems of easy oxidation, cooling solidification and the like when the molten metal is poured out from the smelting furnace, and simultaneously being easy to leak to cause scalding of personnel and reduction of content.
According to the invention, the original vertical screening bin is changed into the transverse screening bin, so that the metal powder can be conveniently screened and classified, and the situation that the classification is not clear is avoided.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is an overall schematic view of the present invention;
FIG. 2 is a schematic front view of the present invention;
FIG. 3 is a schematic view in half section of the melting furnace of the present invention;
fig. 4 is a partially enlarged view of fig. 3.
In the figure: 1. a crane; 2. a smelting furnace; 21. a heating device; 22. a heating chamber; 23. a filter screen; 24. a guide plate; 25. a pipe body; 26. a sealing plug; 3. spraying a disc; 31. a ceramic nozzle; 32. sealing the hole; 33. an air flow channel; 4. a screening bin; 5. an exhaust pipe; 6. and (4) discharging the bin at the lower part.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be described more clearly and more completely with reference to the drawings in the following embodiments, and it is understood that the described embodiments are only a part of the present invention, rather than all of the present invention, and based on the embodiments, other embodiments obtained by those skilled in the art without inventive exercise are within the protection scope of the present invention.
As shown in fig. 1 to 4, a gravity-based classifying and screening system for metal powder includes a sealed layered melting furnace 2, in which ore slag and molten metal are separated from each other inside the melting furnace 2, and the molten metal is directly introduced into a spray plate 3 through a seal pipe, atomized by a vortex-like cyclone formed by nitrogen gas in the spray plate 3 to form metal powder, and sprayed into a screening bin 4 which is horizontally disposed and fixedly connected to the spray plate 3 to perform classifying and screening by gravity.
The smelting furnace 2 comprises a heating device 21 positioned below and a heating bin 22 positioned above, wherein a filter screen 23 for filtering slag and a guide plate 24 for guiding molten metal are fixedly connected in the heating bin 22.
The guide plates 24 are provided with two sections and are respectively fixed on two sides of the inner wall of the heating chamber 22, the filter screen 23 is positioned between the two guide plates 24, and the filter screen 23 and the guide plates 24 are both obliquely arranged. Set up the baffle 24 into two sections, avoid cutting apart into two-layer with whole hot-box 22, the slag can't move down and arrange outward, the baffle 24 that is located the upper strata is close to filter screen 23 bottom, avoid the metal ore to flow into the below, thereby the molten metal of smelting can't be collected, the slag of accomplishing of smelting is in the below that the debris slided to below baffle 24 along filter screen 23 in staff's beat, the preceding conical filter screen 23 that is provided with of outflow hole 27, the slag that will fall blocks and parts, avoid blocking to outflow hole 27 and cause it can't use.
The guide plate 24 is provided with an outflow hole 27 at the lowest part of the heating chamber 22, and the outflow hole 27 is communicated with a ceramic discharge spout 31 on the spray plate 3 through a sealing pipe. The lowest of baffle 24 sets up outflow hole 27 to can be with being located the inside molten metal of heated warehouses 22 all flow into the sealed tube, and enter into ceramic tip 31 through the sealed tube and atomize, the screening avoids having remaining molten metal to cause the waste promptly, causes easy solidification again on baffle 24, is unfavorable for the use of baffle 24.
The sealing tube comprises a tube body 25 and two sealing plugs 26, the sealing plugs 26 are screwed on two ends of the outer wall of the tube body 25, and the two sealing plugs 26 are respectively plugged into the outflow hole 27 and the sealing hole 32 formed in the spray disc 3. The sealed tube is used for connecting smelting furnace 2 and spouts dish 3, avoid exposing molten state metal liquid in the air by oxidation and receive the cold solidification, avoid scalding the staff simultaneously, the middle packing of body 25 of double-deck setting has insulation material, avoid inside molten state's metal liquid cooling on the one hand, on the other hand avoids inside heat to spread out and scalds the staff, the setting of sealing plug 26, avoid the metal liquid to reveal the harm that causes waste and device from body 25 and heated warehouses 22 wall and spout 3 holes of dish.
The side of the furnace 2 is fitted with a crane 1, which crane 1 is used to transfer metal ore on the ground into the furnace 2 on the bench for heating. Crane 1 is through placing the hanging flower basket to ground, and the staff places wherein with the metal ore, shifts the metal ore to the top of high platform smelting furnace 2 through crane 1 afterwards, and the bell of smelting is opened in the follow-up slip, and the bottom plate of hanging flower basket is drawn open in the slip simultaneously, drops metal ore in smelting furnace 2 entirely, closes the bell afterwards, starts smelting furnace 2 and smelts.
The blast pipe 5 has been seted up to one side that the spraying disc 3 was kept away from in screening storehouse 4 for arrange the air of inside outward, the below in screening storehouse 4 sets gradually a plurality of lower storehouses 6 and is used for storing the metal powder after the screening in grades. Blast pipe 5 is kept away from one side setting of spouting dish 3 at screening storehouse 4 to when filling nitrogen gas into in with spouting dish 3 to screening storehouse 4, the blast pipe 5 of opposite side also takes the air out simultaneously, and both combined action form fast and do not have air and negative pressure state in screening storehouse 4, and each section of arranging storehouse 6 under corresponds each hierarchical interval when gravity method screening respectively for collection and thorough cooling after grading the metal powder.
When in use, firstly, a nitrogen pipe is connected to the spray tray 3, nitrogen is injected into the screening bin 4, the exhaust pipe 5 is opened at the other side of the drying and selecting bin to extract air inside and then close, at the moment, the inside of the screening bin 4 is filled with nitrogen and becomes a negative pressure state, then the metal ore positioned on the ground is transferred to the upper part of the smelting furnace 2 on a high platform through the crane 1, the furnace cover of the smelting furnace 2 is opened, the bottom plate of the hanging basket of the crane 1 is extracted, the metal ore inside the hanging basket is poured into the smelting furnace 2, then the furnace cover is closed, the smelting furnace 2 is started to heat and smelt the metal ore positioned in the smelting furnace 2 and melt the metal ore into molten metal, the molten metal slowly flows to an external discharge port along the cyclone 24 and is directly injected into the spray tray 3 through the pipe body 25, and is atomized into metal powder by a vortex-shaped guide plate formed by the nitrogen in a side airflow channel through a ceramic nozzle in, fall into each range that lower storehouse 6 corresponds down, also than screening storehouse 4 and carry out thorough cooling simultaneously by the collection, open lower storehouse 6 and collect corresponding metal powder after the cooling, then carry out next round of smelting, atomizing, screening.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1. A classified screening system based on gravity method screening metal powder is characterized in that: the device comprises a sealed layered smelting furnace (2), wherein ore slag and molten metal are separated from each other in the smelting furnace (2), the molten metal is directly led into a spray tray (3) through a sealing pipe, is atomized by a vortex cyclone formed by nitrogen in the spray tray (3) to form metal powder, and is sprayed to a screening bin (4) which is transversely arranged and fixedly connected with the spray tray (3) to perform gravity method classified screening.
2. A gravity based classification screening system for metal powders according to claim 1, wherein: the smelting furnace (2) comprises a heating device (21) positioned below and a heating bin (22) positioned above, wherein a filter screen (23) for filtering slag and a guide plate (24) for guiding molten metal are fixedly connected in the heating bin (22).
3. A gravity based classification screening system for metal powders according to claim 2, wherein: guide plate (24) are provided with two sections, and fix respectively the both sides of heating chamber (22) inner wall, filter screen (23) are located two between guide plate (24), just filter screen (23) with guide plate (24) are the slope setting.
4. A gravity based classification screening system for metal powders according to claim 2, wherein: the guide plate (24) is arranged at the lowest position of the heating bin (2) and is provided with an outflow hole (27), and the outflow hole (27) is communicated with the ceramic discharge spout (31) on the spray disc (3) through the sealing pipe.
5. A gravity based classification screening system for metal powders according to claim 1, wherein: the sealing tube comprises a tube body (25) and two sealing plugs (26), wherein the sealing plugs (26) are screwed at two ends of the outer wall of the tube body (25), and the two sealing plugs (26) are respectively plugged into an outflow hole (27) and a sealing hole (32) formed in the spray disc (3).
6. A gravity based classification screening system for metal powders according to claim 1, wherein: the side surface of the smelting furnace (2) is provided with a crane (1), and the crane (1) is used for transferring metal ores on the ground into the smelting furnace (2) on a high platform for heating.
7. A gravity based classification screening system for metal powders according to claim 1, wherein: the spraying device is characterized in that one side, far away from the spraying disc (3), of the screening bin (4) is provided with an exhaust pipe (5) for exhausting the inside air outwards, and a plurality of lower discharge bins (6) for storing metal powder after grading screening are sequentially arranged below the screening bin (4).
CN201911300981.0A 2019-12-17 2019-12-17 Graded screening system for screening metal powder based on gravity method Withdrawn CN111001816A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911300981.0A CN111001816A (en) 2019-12-17 2019-12-17 Graded screening system for screening metal powder based on gravity method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911300981.0A CN111001816A (en) 2019-12-17 2019-12-17 Graded screening system for screening metal powder based on gravity method

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CN111001816A true CN111001816A (en) 2020-04-14

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CN201911300981.0A Withdrawn CN111001816A (en) 2019-12-17 2019-12-17 Graded screening system for screening metal powder based on gravity method

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112108615A (en) * 2020-09-16 2020-12-22 王德忠 Aluminum product casting solution conveying system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112108615A (en) * 2020-09-16 2020-12-22 王德忠 Aluminum product casting solution conveying system
CN112108615B (en) * 2020-09-16 2021-11-23 江西晶科铝业有限公司 Aluminum product casting solution conveying system

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Application publication date: 20200414

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