CN109079140B - Method for manufacturing molecular sieve block by using powder metallurgy mode - Google Patents
Method for manufacturing molecular sieve block by using powder metallurgy mode Download PDFInfo
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- CN109079140B CN109079140B CN201810989859.8A CN201810989859A CN109079140B CN 109079140 B CN109079140 B CN 109079140B CN 201810989859 A CN201810989859 A CN 201810989859A CN 109079140 B CN109079140 B CN 109079140B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/11—Making porous workpieces or articles
- B22F3/1121—Making porous workpieces or articles by using decomposable, meltable or sublimatable fillers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/02—Inorganic material
- B01D71/028—Molecular sieves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
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- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a method for manufacturing a molecular sieve block by using a powder metallurgy mode, which comprises the steps of using a plurality of aluminum powder, plasticizer, carbon powder, alloy reinforcing elements, nickel powder, copper powder, paraffin powder and the balance of iron powder to mix the materials by a mixer, uniformly adhering the mixed materials to the surface of a cloth strip and a gap between the cloth strip after mixing, finally forming a vortex-shaped block by a sintering mode, and then processing the vortex-shaped block and a molecular sieve to form the molecular sieve block. The invention can form the vortex-shaped block by using a powder metallurgy mode, and then combine with the molecular sieve to form the molecular sieve block, is used for carrying out adsorption operation on gas or liquid, has simple structure and good adsorption effect, and does not need to process the molecular sieve after the adsorption operation is finished.
Description
Technical Field
The invention belongs to the technical field of molecular sieves, and particularly relates to a method for manufacturing a molecular sieve block by using a powder metallurgy mode.
Background
Molecular sieves are materials containing precise and single microscopic pores that can be used to adsorb gases or liquids. Molecules small enough can be adsorbed through the pores while larger molecules cannot, unlike a conventional sieve, operate at the molecular level.
Powder metallurgy is a process technology for manufacturing metal or metal powder as a raw material, and manufacturing metal materials, composite materials and various types of products through forming and sintering operations, and at present, the powder metallurgy technology is widely applied to the fields of traffic, machinery, electronics, aerospace, weaponry, biology, new energy, information, nuclear industry and the like, and becomes one of the most active branches in new material science.
At present, the molecular sieve is used, generally, the molecular sieve is directly put into gas or liquid to be purified, and the adsorption operation is directly carried out, so that the adsorption is not thorough, the adsorption effect is poor, and the molecular sieve has extremely small particle size, so that the molecular sieve is not easy to remove after the adsorption operation is finished, and the subsequent pollution is easy to generate.
Disclosure of Invention
The invention overcomes the defects of the prior art, and provides a method for manufacturing a molecular sieve block by using a powder metallurgy mode, which can form a vortex-shaped block by using the powder metallurgy mode, and then combine with a molecular sieve to form the molecular sieve block for carrying out adsorption operation on gas or liquid.
In order to achieve the purpose, the invention adopts the technical scheme that: a method for manufacturing molecular sieve blocks by using a powder metallurgy mode, comprising the following steps:
(1) adopting a mixer to carry out mixing operation, and uniformly mixing the following substances: 6-9% of aluminum powder, 0.5% of plasticizer, 0.4-1% of carbon powder, 1-3% of alloy reinforcing element, 0.5-4.5% of nickel powder, 5-10% of copper powder, 3% of paraffin powder and the balance of iron powder to form a mixed substance;
(2) coiling the cloth strip disc into a vortex-shaped structure, and putting the coiled cloth strip into a mixer to enable the mixed substances to be uniformly adhered to the surface of the cloth strip and in the clearance of the cloth strip;
(3) putting the cloth strips obtained in the step (2) into a rotary furnace for sintering operation to form a vortex-shaped block, and cooling the vortex-shaped block to room temperature after sintering;
(4) and (4) processing the molecular sieve material to form a molecular sieve block.
In a preferred embodiment of the present invention, in the step (2), the cloth strip may be coiled into a spiral structure using a cylinder.
In a preferred embodiment of the invention, the cloth strip is a flexible and high-temperature meltable cloth strip.
In a preferred embodiment of the present invention, before step (3), the following steps may be further included: and (3) preheating the vortex-structure cloth strips after the step (2) is finished, so that the vortex-structure cloth strips have certain hardness after the preheating treatment.
In a preferred embodiment of the present invention, the temperature of the preheating treatment is 50 to 90 ℃.
In a preferred embodiment of the present invention, in the step (4), the molecular sieve is sprayed or put into the pasty molecular sieve, so that the molecular sieve enters the pores of the vortex-shaped block and covers the surface of the vortex-shaped block.
In a preferred embodiment of the present invention, in the step (3), the temperature in the rotary furnace is 600 to 900 ℃, and the duration of the sintering operation is 0.5 to 1 hour.
In a preferred embodiment of the present invention, in step (1), the alloy reinforcing element is a mixture of one or more of the following: zn, Co, Mn and Mo.
The invention solves the defects in the background technology, and has the following beneficial effects:
(1) the molecular sieve block is manufactured by adopting a powder metallurgy mode, and a large number of pores can be formed after powder metallurgy forming, so that the molecular sieve can enter the pores, the amount of the molecular sieve is increased, and the adsorption effect is improved;
(2) the flexible cloth strip capable of being melted at high temperature is used as a carrier for forming the vortex-shaped block, so that the cloth strip can be melted at high temperature during sintering operation, and the formation of the vortex-shaped block cannot be influenced;
(3) the use of alloy reinforcing elements enhances the hardness of the formed vortex-shaped block;
(4) the molecular sieve is used for adsorbing gas or liquid, so that the adsorption effect is ensured.
Detailed Description
The invention will now be described in further detail with reference to specific embodiments,
example 1
A method for manufacturing molecular sieve blocks by using a powder metallurgy mode, comprising the following steps:
(1) mixing aluminum powder, plasticizer, carbon powder, alloy reinforcing elements, nickel powder, copper powder, paraffin powder and the balance of iron powder in a mixer to form a mixed substance;
(2) coiling the cloth strip disc into a vortex-shaped structure, and putting the coiled cloth strip into a mixer to enable the mixed substances to be uniformly adhered to the surface of the cloth strip and in the clearance of the cloth strip;
(3) putting the cloth strips obtained in the step (2) into a rotary furnace for sintering operation to form a vortex-shaped block, and cooling the vortex-shaped block to room temperature after sintering;
(4) and (4) processing the molecular sieve material to form a molecular sieve block.
Wherein: the molecular sieve block is manufactured by adopting a powder metallurgy mode, and a large number of pores can be formed after powder metallurgy forming, so that the molecular sieve can enter the pores, the amount of the molecular sieve is increased, and the adsorption effect is improved; meanwhile, the flexible cloth strips capable of being melted at high temperature are used as carriers for forming the vortex-shaped blocks, so that the cloth strips are guaranteed to be melted at high temperature during sintering operation, and the formation of the vortex-shaped blocks is not influenced; the use of alloy reinforcing elements enhances the hardness of the formed vortex-shaped block; the molecular sieve is used for adsorbing gas or liquid, so that the adsorption effect is ensured.
Example 2
A method for manufacturing molecular sieve blocks by using a powder metallurgy mode, comprising the following steps:
(1) putting 6% of aluminum powder, 0.5% of plasticizer, 0.4% of carbon powder, 1% of alloy reinforcing element, 0.5% of nickel powder, 5% of copper powder, 3% of paraffin powder and the balance of iron powder into a mixer for mixing to form a mixed substance;
(2) coiling the cloth strip disc into a vortex-shaped structure, and putting the coiled cloth strip into a mixer to enable the mixed substances to be uniformly adhered to the surface of the cloth strip and in the clearance of the cloth strip;
(3) putting the cloth strips obtained in the step (2) into a rotary furnace for sintering operation, keeping the temperature of the rotary furnace at 600 ℃, heating for 0.5h to form a vortex-shaped structure body, and cooling the vortex-shaped block to room temperature after sintering;
(4) and (4) processing the molecular sieve material to form a molecular sieve block.
Wherein:
before the step (3), preheating treatment can be carried out on the vortex-structure cloth strips after the step (2) is finished, wherein the temperature of the preheating treatment is 50 ℃, so that the vortex-structure cloth strips have certain hardness after the preheating treatment, and the mixed substances are prevented from being separated from the cloth strips in the moving process of the cloth strips.
In the step (4), a method of spraying or putting the vortex-shaped block into a pasty molecular sieve can be adopted, so that the molecular sieve enters the pores of the vortex-shaped block and covers the surface of the vortex-shaped block, thereby forming a molecular sieve block for carrying out adsorption separation operation.
In summary, the molecular sieve is used for adsorbing gas or liquid, so that the adsorption effect is ensured, and meanwhile, the molecular sieve block is manufactured in a powder metallurgy mode, and a large number of pores are formed after powder metallurgy is formed, so that the molecular sieve can enter the pores, the amount of the molecular sieve is increased, and the adsorption effect is improved.
Example 3
A method for manufacturing molecular sieve blocks by using a powder metallurgy mode, comprising the following steps:
(1) putting 8% of aluminum powder, 0.5% of plasticizer, 0.8% of carbon powder, 2% of alloy reinforcing element, 2% of nickel powder, 7% of copper powder, 3% of paraffin powder and the balance of iron powder into a mixer for mixing to obtain a mixed substance;
(2) coiling the cloth strip disc into a vortex-shaped structure, and putting the coiled cloth strip into a mixer to enable the mixed substances to be uniformly adhered to the surface of the cloth strip and in the clearance of the cloth strip;
(3) putting the cloth strips obtained in the step (2) into a rotary furnace for sintering operation, keeping the temperature of the rotary furnace at 800 ℃, heating for 0.8h to form a vortex-shaped structure body, and cooling the vortex-shaped block to room temperature after sintering;
(4) and (4) processing the molecular sieve material to form a molecular sieve block.
Wherein:
the alloy reinforcing elements in the step (1) are mixed according to the following proportion: 20% of Zn, 20% of Co, 15% of Mn and the balance of Mo.
And (3) coiling the cloth strip disk into a vortex-shaped structure, wherein a gap exists between the vortex-shaped structures formed by coiling, and meanwhile, the cloth strip which is flexible and can be degraded at high temperature is adopted, so that the cloth strip can be degraded at high temperature in the step (3) process, the formation of the vortex-shaped block cannot be influenced, and the gap also exists in the vortex-shaped block formed at the same time, so that the later-stage molecular sieve material treatment is facilitated.
In the step (4), the molecular sieve and the vortex block can be treated by spraying or smearing, so that the molecular sieve is attached to the surface of the vortex block and enters the pores of the vortex block, thereby forming the molecular sieve block for adsorption separation.
In summary, the molecular sieve block is manufactured by adopting a powder metallurgy mode, a large number of pores are formed after the powder metallurgy is formed, the molecular sieve can enter the pores, the quantity of the molecular sieve is increased, the adsorption effect is improved, meanwhile, the flexible cloth strip capable of being melted at high temperature is used as a carrier for forming the vortex block, the cloth strip is guaranteed to be melted at high temperature during sintering operation, the formation of the vortex block cannot be influenced, and the hardness of the vortex block after being formed is enhanced due to the use of alloy reinforcing elements.
In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (6)
1. A method for manufacturing a molecular sieve block by using a powder metallurgy mode is characterized by comprising the following steps: the method comprises the following steps:
(1) adopting a mixer to carry out mixing operation, and uniformly mixing the following substances: 6-9% of aluminum powder, 0.5% of plasticizer, 0.4-1% of carbon powder, 1-3% of alloy reinforcing element, 0.5-4.5% of nickel powder, 5-10% of copper powder, 3% of paraffin powder and the balance of iron powder to form a mixed substance;
(2) coiling the cloth strip disc into a vortex-shaped structure, and putting the coiled cloth strip into a mixer to enable the mixed substances to be uniformly adhered to the surface of the cloth strip and in the clearance of the cloth strip;
(3) putting the cloth strips obtained in the step (2) into a rotary furnace for sintering operation to form a vortex-shaped block, and cooling the vortex-shaped block to room temperature after sintering;
(4) processing a molecular sieve material to form a molecular sieve block;
the cloth strip is flexible and can be melted at high temperature; before the step (3), the following steps are also included: and (3) preheating the vortex-structure cloth strips after the step (2) is finished, so that the vortex-structure cloth strips have certain hardness after the preheating treatment.
2. The method of claim 1, wherein the molecular sieve block is prepared by powder metallurgy, and the method comprises the following steps: in the step (2), the cloth strip disc is rolled into a vortex-shaped structure by using a cylinder.
3. The method of claim 1, wherein the molecular sieve block is prepared by powder metallurgy, and the method comprises the following steps: the temperature of the preheating treatment is 50-90 ℃.
4. The method of claim 1, wherein the molecular sieve block is prepared by powder metallurgy, and the method comprises the following steps: in the step (4), the molecular sieve enters the pores of the vortex-shaped block and covers the surface of the vortex-shaped block by adopting a spraying method or a method of putting the vortex-shaped block into a pasty molecular sieve.
5. The method of claim 1, wherein the molecular sieve block is prepared by powder metallurgy, and the method comprises the following steps: in the step (3), the temperature in the rotary furnace is 600-900 ℃, and the time of the sintering operation is 0.5-1 h.
6. The method of claim 1, wherein the molecular sieve block is prepared by powder metallurgy, and the method comprises the following steps: in the step (1), the alloy reinforcing element is a mixture of one or more of the following elements: zn, Co, Mn and Mo.
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| AU7961882A (en) * | 1981-01-29 | 1982-08-05 | Nippon Seisen Co. Ltd. | Metallic sintered body |
| TW387826B (en) * | 1997-03-11 | 2000-04-21 | Katayama Tokushu Kogyo Kk | Method of manufacturing porous sheet porous metal sheet manufactured by method, and electrode for battery |
| CN101249564B (en) * | 2008-03-26 | 2010-12-22 | 浙江中平粉末冶金有限公司 | Powder metallurgy technique |
| GB0903262D0 (en) * | 2009-02-26 | 2009-04-08 | Johnson Matthey Plc | Filter |
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Address after: 528225 fushenggang, Shangjie village, Yanshan Town, Nanhai District, Foshan City, Guangdong Province Patentee after: Guangdong Kaiyang New Material Co.,Ltd. Address before: 528000 fushenggang, Shangjie village, Yanshan Town, Nanhai District, Foshan City, Guangdong Province Patentee before: FOSHAN NANHAI KAIYANG POWDER METALLURGY Co.,Ltd. |
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Denomination of invention: A Method for Producing Molecular Sieve Blocks Using Powder Metallurgy Effective date of registration: 20230421 Granted publication date: 20210504 Pledgee: Industrial and Commercial Bank of China Limited Foshan Dali sub branch Pledgor: Guangdong Kaiyang New Material Co.,Ltd. Registration number: Y2023980038781 |
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