CN113953076B - Method for improving grinding efficiency and activity of nickel alloy refining slag of AOD furnace - Google Patents
Method for improving grinding efficiency and activity of nickel alloy refining slag of AOD furnace Download PDFInfo
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- CN113953076B CN113953076B CN202111031321.4A CN202111031321A CN113953076B CN 113953076 B CN113953076 B CN 113953076B CN 202111031321 A CN202111031321 A CN 202111031321A CN 113953076 B CN113953076 B CN 113953076B
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- nickel alloy
- refining slag
- alloy refining
- aod furnace
- sludge
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- 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
- B02C23/06—Selection or use of additives to aid disintegrating
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- 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
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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
- 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 method for improving the grinding efficiency and activity of nickel alloy refining slag of an AOD furnace, which comprises the steps of mixing the nickel alloy refining slag of the AOD furnace and potassium carbonate according to a certain proportion, adding the mixture into a grinding machine for grinding for 15-30 min, adding a certain proportion of a mixture of calcium borate subjected to heat treatment and sludge of an aluminum profile factory, and grinding for 30-60 min; wherein the AOD furnace nickel alloy refining slag and potassium carbonate comprise the following components in percentage by weight: 97.5 to 99 percent of nickel alloy refining slag of the AOD furnace; 1.0 to 2.5 percent of potassium carbonate; the mixture of calcium borate subjected to external heat treatment and sludge of an aluminum profile factory accounts for 1.5-4.5% of the total mass of the nickel alloy refining slag and the potassium carbonate of the AOD furnace; wherein the mass ratio of the calcium borate to the sludge of the aluminum profile factory is as follows: 1. The invention improves the grinding performance and activity of the nickel alloy refining slag through a physical and chemical compound mode, and plays a positive role in resource utilization of the nickel alloy refining slag of the AOD furnace and protecting the ecological environment.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of building materials, in particular to a method for improving the grinding efficiency and activity of nickel alloy refining slag of an AOD furnace.
[ background of the invention ]
The nickel alloy refining slag of the AOD furnace is slag generated when nickel alloy and molten iron are refined in the AOD furnace, and the main chemical component of the slag comprises SiO 2 、Al 2 O 3 CaO and Fe 2 O 3 Etc., wherein the content of CaO is relatively high, each of about 45% to 6%0 percent, compared with blast furnace slag, electric furnace slag and the like, the AOD furnace nickel alloy refining slag has low activity, and simultaneously, because the ball-wrapping and agglomeration phenomena are easily generated in the grinding process, the further grinding of the AOD furnace nickel alloy refining slag is hindered, so the grinding efficiency and the particle grading are seriously influenced, and the grinding energy consumption and the production cost of the AOD furnace nickel alloy refining slag are increased.
The nickel alloy refining slag of the AOD furnace is easy to generate ball-wrapping and agglomeration phenomena in the grinding process, and further grinding of the refining slag is hindered, so that the grinding efficiency and the particle grading are seriously influenced, and the grinding energy consumption and the production cost are increased. Because the AOD furnace nickel alloy refining slag has low activity and poor grindability, the application research on the AOD furnace nickel alloy refining slag is not much at present, and most of the applications mainly adopt recovery slagging. In order to improve the grinding characteristic, reduce the production cost and improve the use efficiency, the ball wrapping and agglomeration phenomena in the grinding process must be solved, and the activity of the powder is improved by adopting a physical and chemical compound mode by adding an excitant.
[ summary of the invention ]
The invention aims to solve the technical problem of providing a method for improving the grinding efficiency and activity of nickel alloy refining slag of an AOD furnace, which improves the grinding performance and activity of the nickel alloy refining slag of the AOD furnace in a physical and chemical compound mode, and plays a positive role in resource utilization of the nickel alloy refining slag of the AOD furnace and protecting the ecological environment.
The invention is realized by the following steps:
a method for improving grinding efficiency and activity of nickel alloy refining slag of an AOD furnace comprises the following steps:
mixing the AOD furnace nickel alloy refining slag and potassium carbonate according to a certain proportion, adding the mixture into a mill for grinding for 15-30 min, adding a certain proportion of the mixture of calcium borate subjected to heat treatment and sludge of an aluminum profile factory, and grinding for 30-60 min;
wherein the AOD furnace nickel alloy refining slag and potassium carbonate comprise the following components in percentage by weight:
97.5 to 99 percent of nickel alloy refining slag of the AOD furnace;
1.0 to 2.5 percent of potassium carbonate.
Further, the mixture of calcium borate subjected to external heat treatment and sludge of an aluminum profile factory accounts for 1.5-4.5% of the total mass of the nickel alloy refining slag of the AOD furnace and the potassium carbonate; wherein the mass ratio of the calcium borate to the sludge of the aluminum profile factory is as follows: 1.
Further, the heat treatment method of the calcium borate and sludge mixture in the aluminum profile factory comprises the following steps: putting the dried calcium borate and the aluminum profile sludge into a mill to grind for 30-45min according to the proportion, then putting the ground sludge into a high-temperature furnace to heat to 600-800 ℃, and preserving heat for 10-20min.
The invention has the following advantages:
the invention reduces the electric charge generated on the particle surface in the grinding process of the refined slag by mixing the pretreated sludge of the aluminum profile factory and the calcium borate, and prevents the treated sludge from being compounded by embedding the sludge into the gap of the refined slag in the grinding process, thereby increasing the grinding and crushing efficiency. The invention adopts a physical and chemical compound mode, can effectively solve the problems of ball wrapping and agglomeration in the grinding process, improves the grinding efficiency and reduces the grinding power consumption, and meanwhile, the grain composition and activity of the nickel alloy refining slag of the AOD furnace are obviously improved, thereby realizing the resource utilization of the nickel alloy refining slag of the AOD furnace and playing a positive role in protecting the ecological environment.
[ detailed description ] embodiments
The invention relates to a method for improving the grinding efficiency and activity of nickel alloy refining slag of an AOD furnace, which comprises the following steps:
mixing the AOD furnace nickel alloy refining slag and potassium carbonate according to a certain proportion, adding the mixture into a mill for grinding for 15-30 min, adding a certain proportion of the mixture of calcium borate subjected to heat treatment and sludge of an aluminum profile factory, and grinding for 30-60 min;
wherein the AOD furnace nickel alloy refining slag and potassium carbonate comprise the following components in percentage by weight:
97.5 to 99 percent of nickel alloy refining slag of the AOD furnace;
1.0 to 2.5 percent of potassium carbonate.
The mixture of the calcium borate subjected to external heat treatment and the sludge of the aluminum profile factory accounts for 1.5 to 4.5 percent of the total mass of the nickel alloy refining slag and the potassium carbonate of the AOD furnace; wherein the mass ratio of the calcium borate to the sludge of the aluminum profile factory is as follows: 1.
The heat treatment method of the calcium borate and aluminum profile factory sludge mixture comprises the following steps: putting the dried calcium borate and the aluminum profile sludge into a mill to grind for 30-45min according to the proportion, then putting the ground sludge into a high-temperature furnace to heat to 600-800 ℃, and preserving heat for 10-20min.
The technical solution of the present invention will be clearly and completely described with reference to the following detailed description. 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 invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
Example 1:
the weight percentage of the components
99 percent of nickel alloy refining slag of AOD furnace
1.0 percent of potassium carbonate;
the mixture of calcium borate and sludge of the aluminum profile factory after the external heat treatment accounts for 4.5 percent of the total mass of the nickel alloy refining slag and the potassium carbonate of the AOD furnace;
wherein the mass ratio of the calcium borate to the sludge in the aluminum profile factory is as follows:
calcium borate: aluminum profile factory sludge = 1.
Example 2:
the weight percentage of the components
97.5 percent of nickel alloy refining slag of AOD furnace
2.5 percent of potassium carbonate;
the mixture of calcium borate and sludge of the aluminum profile factory after the external heat treatment accounts for 1.5 percent of the total mass of the nickel alloy refining slag and the potassium carbonate of the AOD furnace;
wherein the mass ratio of the calcium borate to the sludge in the aluminum profile factory is as follows:
calcium borate: the sludge of the aluminum profile plant = 3;
example 3:
the weight percentage of the components
98 percent of nickel alloy refining slag of AOD furnace
2.0 percent of potassium carbonate;
the mixture of calcium borate and sludge of the aluminum profile factory after the external heat treatment accounts for 2.5 percent of the total mass of the nickel alloy refining slag and the potassium carbonate of the AOD furnace;
wherein the mass ratio of the calcium borate to the sludge in the aluminum profile factory is as follows:
calcium borate: the aluminum profile factory sludge = 1.
The three groups of embodiments are implemented according to the following steps:
mixing the AOD furnace nickel alloy refining slag and potassium carbonate according to a certain proportion, adding the mixture into a mill for grinding for 15-30 min, adding a certain proportion of the mixture of calcium borate subjected to heat treatment and sludge of an aluminum profile factory, and grinding for 30-60 min together. Then the specific surface area (carried out according to the test method specified in GB/T8074-2008 & lt Bosch method for measuring specific surface area of cement) and the activity index (carried out according to the test method specified in GB/T18046-2008 & lt & gt granulated blast furnace slag powder for use in cement and concrete) of the alloy are measured and compared with a reference sample AOD furnace nickel alloy refined slag, and the results of each example and the reference sample are shown in Table 1.
Table 1:
in conclusion, the invention mixes the pretreated sludge of the aluminum profile plant and the calcium borate, on one hand, the electric charges generated on the particle surface in the grinding process of the refining slag are reduced, on the other hand, the treated sludge is embedded into the gaps of the refining slag in the grinding process, so that the composition of the sludge and the refining slag is prevented, and the grinding and crushing efficiency of the sludge and the calcium borate is improved. The invention adopts a physical and chemical compound mode, can effectively solve the problems of ball wrapping and agglomeration in the grinding process, improves the grinding efficiency and reduces the grinding power consumption, and meanwhile, the grain composition and activity of the nickel alloy refining slag of the AOD furnace are obviously improved, thereby realizing the resource utilization of the nickel alloy refining slag of the AOD furnace and playing a positive role in protecting the ecological environment.
Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the appended claims.
Claims (2)
1. A method for improving the grinding efficiency and the activity of nickel alloy refining slag of an AOD furnace is characterized by comprising the following steps: the method comprises the following steps:
mixing the AOD furnace nickel alloy refining slag and potassium carbonate according to a certain proportion, adding the mixture into a mill for grinding for 15-30 min, adding a certain proportion of the mixture of calcium borate subjected to heat treatment and sludge of an aluminum profile factory, and grinding for 30-60 min;
wherein the AOD furnace nickel alloy refining slag and potassium carbonate comprise the following components in percentage by weight:
97.5 to 99 percent of nickel alloy refining slag of the AOD furnace;
1.0 to 2.5 percent of potassium carbonate;
the mixture of calcium borate subjected to external heat treatment and sludge of an aluminum profile factory accounts for 1.5-4.5% of the total mass of the nickel alloy refining slag and the potassium carbonate of the AOD furnace; wherein the mass ratio of the calcium borate to the sludge of the aluminum profile factory is as follows: 1.
2. The method for improving the grinding efficiency and the activity of the nickel alloy refining slag of the AOD furnace according to claim 1, wherein the method comprises the following steps: the heat treatment method of the calcium borate and aluminum profile factory sludge mixture comprises the following steps: putting the dried calcium borate and the aluminum profile sludge into a mill to grind for 30-45min according to the proportion, then putting the ground sludge into a high-temperature furnace to heat to 600-800 ℃, and preserving heat for 10-20min.
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| CN202111031321.4A CN113953076B (en) | 2021-09-03 | 2021-09-03 | Method for improving grinding efficiency and activity of nickel alloy refining slag of AOD furnace |
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| CN113953076B true CN113953076B (en) | 2022-10-28 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004143034A (en) * | 2002-08-29 | 2004-05-20 | Nippon Steel Corp | Method for modifying steel making slag and modified steel making slag |
| WO2015087255A1 (en) * | 2013-12-11 | 2015-06-18 | University Of Pretoria | Improved alkaline-activated slag (aas) composition |
| CN106148699A (en) * | 2015-04-16 | 2016-11-23 | 广西大学 | Utilize the method that red mud and lateritic nickel ore prepare iron-nickel alloy by-product activity mineral hot furnace grain slag |
| CN108002720A (en) * | 2017-11-08 | 2018-05-08 | 马鞍山豹龙新型建材有限公司 | A kind of preparation method of high activity superfine graining slag micropowder |
| CN113185174A (en) * | 2021-04-13 | 2021-07-30 | 盛海聚源(山东)科技发展有限公司 | Steel slag activity excitant, active steel slag powder and application thereof |
-
2021
- 2021-09-03 CN CN202111031321.4A patent/CN113953076B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004143034A (en) * | 2002-08-29 | 2004-05-20 | Nippon Steel Corp | Method for modifying steel making slag and modified steel making slag |
| WO2015087255A1 (en) * | 2013-12-11 | 2015-06-18 | University Of Pretoria | Improved alkaline-activated slag (aas) composition |
| CN106148699A (en) * | 2015-04-16 | 2016-11-23 | 广西大学 | Utilize the method that red mud and lateritic nickel ore prepare iron-nickel alloy by-product activity mineral hot furnace grain slag |
| CN108002720A (en) * | 2017-11-08 | 2018-05-08 | 马鞍山豹龙新型建材有限公司 | A kind of preparation method of high activity superfine graining slag micropowder |
| CN113185174A (en) * | 2021-04-13 | 2021-07-30 | 盛海聚源(山东)科技发展有限公司 | Steel slag activity excitant, active steel slag powder and application thereof |
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