CN113106261A - Production process for processing secondary aluminum ash into aluminum-based material - Google Patents
Production process for processing secondary aluminum ash into aluminum-based material Download PDFInfo
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- CN113106261A CN113106261A CN202110279341.7A CN202110279341A CN113106261A CN 113106261 A CN113106261 A CN 113106261A CN 202110279341 A CN202110279341 A CN 202110279341A CN 113106261 A CN113106261 A CN 113106261A
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- 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
- C22B7/02—Working-up flue dust
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- 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
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- 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
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- 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
- C22B21/0038—Obtaining aluminium by other processes
- C22B21/0069—Obtaining aluminium by other processes from scrap, skimmings or any secondary source aluminium, e.g. recovery of alloy constituents
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- 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
- C22B7/001—Dry processes
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- 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
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Abstract
The invention discloses a production process for processing secondary aluminum ash into an aluminum-based material, which comprises the following process steps: the invention has the beneficial effects that the device comprises the following components of metering storage, calculating and proportioning, raw material grinding, sorting by a powder selecting system, preheating treatment, self-heating and heating treatment, cooling and crushing, semi-finished product screening, packaging and warehousing, and flue gas dust treatment, and has the following beneficial effects: compared with the traditional process, the invention has the advantages of doubled productivity, high production efficiency, greatly reduced consumed natural gas, energy conservation and low production cost.
Description
Technical Field
The invention relates to the technical field related to processing and production of aluminum-based materials, in particular to a production process for processing secondary aluminum ash into an aluminum-based material.
Background
Aluminum-based materials can be divided into three categories: the polymer matrix composite material, the metal matrix composite material and the ceramic matrix composite material are characterized in that the matrix of the metal matrix composite material is mainly aluminum, nickel, magnesium, titanium and the like, and the aluminum has many characteristics such as light weight, small density, good plasticity, easy mastering of aluminum matrix composite technology, easy processing and the like. In addition, the aluminum matrix composite has high specific strength and specific rigidity, good high-temperature performance, better fatigue resistance and wear resistance, good damping performance and low thermal expansion coefficient. Like other composites, it combines specific mechanical and physical properties to meet product needs. Therefore, aluminum-based composites have become one of the most common, most important materials in metal-based composites. According to the difference of the reinforcement, the aluminum matrix composite can be divided into fiber reinforced aluminum matrix composite and particle reinforced aluminum matrix composite. The fiber reinforced aluminum matrix composite has a series of excellent performances such as high specific strength and specific modulus, good dimensional stability and the like, but is expensive, and is mainly used in the aerospace field as a structural material of space shuttles, artificial satellites, space stations and the like. The particle reinforced aluminum-based composite material can be used for manufacturing structural materials for satellites and aerospace, airplane parts, metal mirror optical systems and automobile parts; in addition, the method can be used for manufacturing microwave circuit plug-ins, precision parts of inertial navigation systems, turbo-chargers, electronic packaging devices and the like.
In the traditional process of processing secondary aluminum ash into aluminum-based materials, the daily capacity is low, the production efficiency is low, the amount of natural gas required to be consumed for producing each ton of aluminum-based materials is large, the production cost of enterprises is increased, and the labor cost is high.
Disclosure of Invention
The invention aims to provide a production process for processing secondary aluminum ash into an aluminum-based material, which aims to solve the problems in the background art and provide a preparation method of the aluminum-based material, which has high productivity, low natural gas consumption and low labor cost.
The technical scheme adopted by the invention for realizing the technical purpose is as follows: a production process for processing secondary aluminum ash into an aluminum-based material comprises the following process steps: metering and storing, calculating and proportioning, grinding raw materials, sorting by a powder selecting system, preheating, self-heating and heating, cooling and crushing, screening semi-finished products, packaging and warehousing, and treating smoke dust.
Metering and storing:
and respectively putting the secondary aluminum ash and the additive into a cylinder stock through metering.
Calculating ingredients:
sampling and analyzing the secondary aluminum ash and the additive in the warehouse entry process, and calculating a batching scheme according to the components of the raw materials and the product requirements.
Grinding raw materials:
the secondary aluminum ash is continuously fed and metered by a metering reamer and an additive by a metering belt, the sampling detection is carried out at the feed inlet of a homogenizing silo periodically in the production process, and the rotating speed of the metering reamer and the metering belt is adjusted according to components, so that the ground raw material meets the product requirement.
Sorting by a powder sorting system:
the mixed material after burdening is ground by a roller press and sorted by a powder concentrator, and the fineness of the ground raw material reaches a certain standard by adjusting the feeding speed and the rotating speed of a fan of the powder concentrator, and then the ground raw material is sent into a homogenizing warehouse.
Preheating treatment:
the milled raw material enters a homogenizing warehouse and is homogenized by air stirring and multi-point discharging, then enters a preheater (five-stage cyclone and kiln outside decomposition) through a discharging control system, and is heated and decomposed by kiln tail smoke and cooling air, so that the temperature of the raw material is heated to be above 800 ℃.
Self-heating and heating treatment:
the heated raw material enters a rotary kiln, and is calcined by utilizing self-heating of secondary aluminum ash and heating of natural gas to generate an aluminum-based material, and the nitrogen and the main fluorine are removed at the same time.
Cooling and crushing:
and cooling the calcined aluminum-based material by a cooler, and crushing the material in a crusher.
Screening a semi-finished product:
and (3) cooling the crushed semi-finished products, conveying the semi-finished products to a vibrating screen above a finished product silo through a conveyor for screening, feeding large-particle coarse materials with the particle size of 10-40 mm into 2 large silos, and feeding fine materials with the particle size of less than 10mm into a small silo.
Packaging and warehousing:
and (3) temporarily storing the large and small granules in a silo for a period of time, naturally cooling to normal temperature, packaging with ton bags and warehousing.
Flue gas dust treatment:
and the flue gas dust generated by the calcining and cooling system is cooled by an air cooler, dedusted by a bag-type dust collector and denitrated, and then discharged, and the collected dust returns to the homogenizing warehouse for secondary treatment.
Preferably, in the sorting process step of the powder sorting system, the fineness of the ground raw material reaches the standard of less than 100 meshes.
Preferably, in the step of the self-heating and heating treatment process, the temperature for calcining by heating natural gas is 1200-1350 ℃.
Preferably, in the screening process step of the semi-finished product, the temperature of the crushed semi-finished product is required to be reduced to 60-70 ℃.
Drawings
FIG. 1 is a graph comparing data of the present invention with that of a conventional process;
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when using, and are only used for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
A production process for processing secondary aluminum ash into an aluminum-based material comprises the following process steps: metering and storing, calculating and proportioning, grinding raw materials, sorting by a powder selecting system, preheating, self-heating and heating, cooling and crushing, screening semi-finished products, packaging and warehousing, and treating smoke dust. Metering and storing: respectively putting the secondary aluminum ash and the additive into a cylinder stock through metering; calculating ingredients: sampling and analyzing the secondary aluminum ash and the additive in the warehouse entry process, and calculating a batching scheme according to the components of the raw materials and the product requirements; grinding raw materials: the secondary aluminum ash is continuously fed and metered by a metering reamer and an additive by a metering belt, the sampling detection is carried out at the feed inlet of a homogenizing silo periodically in the production process, and the rotating speed of the metering reamer and the metering belt is adjusted according to components, so that the ground raw material meets the product requirement; sorting by a powder sorting system: the mixed material after batching is ground by a roller press and sorted by a powder concentrator, and the fineness of the ground raw material is enabled to reach a certain standard by adjusting the feeding speed and the rotating speed of a fan of the powder concentrator and then is sent into a homogenizing warehouse; preheating treatment: the milled raw material enters a homogenizing warehouse and is homogenized by air stirring and multi-point discharging, then enters a preheater (five-stage cyclone and kiln outside decomposition) through a discharging control system, and is heated and decomposed by kiln tail flue gas and cooling air, so that the temperature of the raw material is heated to be above 800 ℃; self-heating and heating treatment: the heated raw material enters a rotary kiln, and is calcined by utilizing self-heating of secondary aluminum ash and natural gas heating to generate an aluminum-based material, and simultaneously, main nitrogen and fluorine are removed; cooling and crushing: cooling the calcined aluminum-based material by a cooler, and crushing the material in a crusher; screening a semi-finished product: carrying out cooling treatment on the crushed semi-finished product, conveying the semi-finished product to a vibrating screen above a finished product silo through a conveyor for screening, feeding large-particle coarse materials with the particle size of 10-40 mm into 2 large silos, and feeding fine materials with the particle size of less than 10mm into a small silo; packaging and warehousing: temporarily storing the large and small granules in a silo for a period of time, naturally cooling to normal temperature, packaging with ton bags and warehousing; flue gas dust treatment: and the flue gas dust generated by the calcining and cooling system is cooled by an air cooler, dedusted by a bag-type dust collector and denitrated, and then discharged, and the collected dust returns to the homogenizing warehouse for secondary treatment.
In the process step of the sorting of the powder selecting system, the fineness of the ground raw material reaches the standard of below 100 meshes, in the process step of self-heating and heating treatment, the temperature for heating and calcining natural gas is 1200-1350 ℃, and in the process step of screening the semi-finished product, the temperature of the crushed semi-finished product is required to be reduced to 60-70 ℃.
The working principle is as follows: the method comprises the steps of respectively feeding secondary aluminum ash and an additive into a cylinder stock through metering, sampling and analyzing the secondary aluminum ash and the additive in the process of feeding the secondary aluminum ash and the additive into the stock, calculating a batching scheme according to components of raw materials and product requirements, continuously feeding and metering the secondary aluminum ash and the additive through a metering reamer and a metering belt, periodically sampling and detecting at a feed inlet of a homogenizing stock in the production process, adjusting the rotating speeds of the metering reamer and the metering belt according to the components to enable ground raw materials to reach the product requirements, grinding and sorting the mixed materials after batching through a roller press, enabling the fineness of the ground raw materials to reach below 100 meshes through adjusting the feeding speed and the rotating speed of a fan of a powder sorting machine, feeding the ground raw materials into the homogenizing stock, feeding the ground raw materials into a homogenizing stock through a homogenizing stock feeding control system, stirring the ground raw materials by utilizing air, discharging and homogenizing at multiple points, feeding the ground raw materials into a preheater (five-stage, heating raw materials to be more than 800 ℃, feeding the heated raw materials into a rotary kiln, heating the raw materials to 1200-1350 ℃ by utilizing self-heating of secondary aluminum ash and natural gas for calcination to generate aluminum-based materials, removing nitrogen and main fluorine, cooling the calcined aluminum-based materials by a cooler, crushing the aluminum-based materials by a crusher, cooling a crushed semi-finished product to about 70 ℃, conveying the crushed semi-finished product to a vibrating screen above a finished silo by a conveyor for screening, feeding 10-40 mm of large-particle coarse materials into 2 large silos after screening, feeding less than 10mm of fine materials into small silos, respectively temporarily storing the large and small particle materials in the silos for a period of time, naturally cooling the large and small particle materials to the normal temperature, bagging and then warehousing, discharging flue gas dust generated by a calcination and cooling system after air cooler cooling, bag-type dust remover dedusting and denitration treatment, returning the collected dust to a homogenization silo, and carrying out secondary.
Various other changes and modifications to the above-described embodiments and concepts may occur to those skilled in the art, and all such changes and modifications are intended to be included within the scope of the present invention as defined in the appended claims.
Claims (4)
1. A production process for processing secondary aluminum ash into an aluminum-based material is characterized by comprising the following steps: comprises the following process steps: metering and storing, calculating and proportioning, grinding raw materials, sorting by a powder selecting system, preheating, self-heating and heating, cooling and crushing, screening semi-finished products, packaging and warehousing, and treating smoke dust;
metering and storing:
and respectively feeding the secondary aluminum ash and the additive into a cylinder warehouse for storage through metering.
Calculating ingredients:
sampling and analyzing the secondary aluminum ash and the additive in the warehouse entry process, and calculating a batching scheme according to the components of the raw materials and the product requirements.
Grinding raw materials:
the secondary aluminum ash is continuously fed and metered by a metering reamer and an additive by a metering belt, the sampling detection is carried out at the feed inlet of a homogenizing silo periodically in the production process, and the rotating speed of the metering reamer and the metering belt is adjusted according to components, so that the ground raw material meets the product requirement.
Sorting by a powder sorting system:
the mixed material after burdening is ground by a roller press and sorted by a powder concentrator, and the fineness of the ground raw material reaches a certain standard by adjusting the feeding speed and the rotating speed of a fan of the powder concentrator, and then the ground raw material is sent into a homogenizing warehouse.
Preheating treatment:
the milled raw material enters a homogenizing warehouse and is homogenized by air stirring and multi-point discharging, then enters a preheater (five-stage cyclone and kiln outside decomposition) through a discharging control system, and is heated and decomposed by kiln tail smoke and cooling air, so that the temperature of the raw material is heated to be above 800 ℃.
Self-heating and heating treatment:
the heated raw material enters a rotary kiln, and is calcined by utilizing self-heating of secondary aluminum ash and heating of natural gas to generate an aluminum-based material, and the nitrogen and the main fluorine are removed at the same time.
Cooling and crushing:
and cooling the calcined aluminum-based material by a cooler, and crushing the material in a crusher.
Screening a semi-finished product:
and (3) cooling the crushed semi-finished products, conveying the semi-finished products to a vibrating screen above a finished product silo through a conveyor for screening, feeding large-particle coarse materials with the particle size of 10-40 mm into 2 large silos, and feeding fine materials with the particle size of less than 10mm into a small silo.
Packaging and warehousing:
and (3) temporarily storing the large and small granules in a silo for a period of time, naturally cooling to normal temperature, packaging with ton bags and warehousing.
Flue gas dust treatment:
and the flue gas dust generated by the calcining and cooling system is cooled by an air cooler, dedusted by a bag-type dust collector and denitrated, and then discharged, and the collected dust returns to the homogenizing warehouse for secondary treatment.
2. The process of claim 1, wherein the secondary aluminum ash is processed into aluminum-based material, and the process comprises the following steps: in the step of the sorting process of the powder sorting system, the fineness of the ground raw material reaches the standard of less than 100 meshes.
3. The process of claim 1, wherein the secondary aluminum ash is processed into aluminum-based material, and the process comprises the following steps: in the self-heating and heating treatment process step, the temperature for calcining by heating natural gas is 1200-1350 ℃.
4. The process of claim 1, wherein the secondary aluminum ash is processed into aluminum-based material, and the process comprises the following steps: in the screening process step of the semi-finished product, the temperature of the crushed semi-finished product is required to be reduced to 60-70 ℃.
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| CN202110279341.7A CN113106261A (en) | 2021-03-16 | 2021-03-16 | Production process for processing secondary aluminum ash into aluminum-based material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114100847A (en) * | 2021-11-19 | 2022-03-01 | 东北大学 | Aluminum ash treatment method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106904849A (en) * | 2017-03-17 | 2017-06-30 | 山东大学 | The system and method that a kind of utilization Industrial Solid Waste produces sulphate aluminium cement co-producing sulfuric acid |
| CN109092863A (en) * | 2018-09-13 | 2018-12-28 | 河南博鑫高科实业有限公司 | Quadratic aluminum dust resource utilization utilizes the device and technique for producing refining slag |
| CN109824072A (en) * | 2018-05-08 | 2019-05-31 | 内蒙古蒙西鄂尔多斯铝业有限公司 | The method for preparing aluminium oxide using industrial residue |
| CN110451542A (en) * | 2019-09-20 | 2019-11-15 | 宁夏正丰环保建材有限公司 | A kind of technique and production system using aluminium ash production calcium aluminate powder |
| CN111170750A (en) * | 2020-01-22 | 2020-05-19 | 北京矿冶科技集团有限公司 | Method for producing refractory material by innocent treatment of secondary aluminum ash |
-
2021
- 2021-03-16 CN CN202110279341.7A patent/CN113106261A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106904849A (en) * | 2017-03-17 | 2017-06-30 | 山东大学 | The system and method that a kind of utilization Industrial Solid Waste produces sulphate aluminium cement co-producing sulfuric acid |
| CN109824072A (en) * | 2018-05-08 | 2019-05-31 | 内蒙古蒙西鄂尔多斯铝业有限公司 | The method for preparing aluminium oxide using industrial residue |
| CN109092863A (en) * | 2018-09-13 | 2018-12-28 | 河南博鑫高科实业有限公司 | Quadratic aluminum dust resource utilization utilizes the device and technique for producing refining slag |
| CN110451542A (en) * | 2019-09-20 | 2019-11-15 | 宁夏正丰环保建材有限公司 | A kind of technique and production system using aluminium ash production calcium aluminate powder |
| CN111170750A (en) * | 2020-01-22 | 2020-05-19 | 北京矿冶科技集团有限公司 | Method for producing refractory material by innocent treatment of secondary aluminum ash |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114100847A (en) * | 2021-11-19 | 2022-03-01 | 东北大学 | Aluminum ash treatment method |
| CN114100847B (en) * | 2021-11-19 | 2022-05-13 | 东北大学 | Aluminum ash treatment method |
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Application publication date: 20210713 |