CN114182054B - Blast furnace molten iron purifying agent and preparation process thereof - Google Patents
Blast furnace molten iron purifying agent and preparation process thereof Download PDFInfo
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- CN114182054B CN114182054B CN202111517480.5A CN202111517480A CN114182054B CN 114182054 B CN114182054 B CN 114182054B CN 202111517480 A CN202111517480 A CN 202111517480A CN 114182054 B CN114182054 B CN 114182054B
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- molten iron
- purifying agent
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/02—Dephosphorising or desulfurising
- C21C1/025—Agents used for dephosphorising or desulfurising
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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
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- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a blast furnace molten iron purifying agent and a preparation process thereof, belonging to the technical field of molten iron purifying agents, wherein 5-10% of a surface treatment agent is sprayed on a spherical body, and the surface treatment agent and epoxy resin embedded in the surface of the spherical body are subjected to a cross-linking reaction for 1-2h at 100-200 ℃ to form a porous spherical body, the porous spherical body is put into a mixer, 2-14% of bentonite and a small amount of clear water are added into the mixer, the mixture is stirred and mixed for 1-2h to form an adsorption porous spherical body, the adsorption porous spherical body is discharged into a drying box and is dried to form the molten iron purifying agent, the molten iron purifying agent has a larger spherical structure and a larger weight, the molten iron purifying agent can be put into molten iron to quickly fall into the molten iron, slag on the surface of the molten iron is removed through the bentonite coated outside the adsorption porous spherical body, and the adsorption porous spherical body can be put into the molten iron to remove internal sulfur and phosphorus components, so that the molten iron can be efficiently removed.
Description
Technical Field
The invention relates to a molten iron purifying agent, in particular to a blast furnace molten iron purifying agent, and also relates to a preparation process of the molten iron purifying agent, in particular to a preparation process of the blast furnace molten iron purifying agent, belonging to the technical field of molten iron purifying agents.
Background
Blast furnace molten iron is molten iron smelted in a blast furnace, is a common name of liquid iron and mainly comprises simple substance iron and liquid iron, and the melting point of the iron is 1534 ℃.
The blast furnace molten iron in the prior art is resistant to contain high sulfur and phosphorus components, although the prior art already has sulfur and phosphorus removal purifying agents, the effect is not good, the purifying agents are always floated on the surface of the blast furnace molten iron and cannot purify the blast furnace molten iron more deeply, and therefore, the blast furnace molten iron purifying agent and the preparation process are designed to optimize the problems.
Disclosure of Invention
The invention aims to provide a blast furnace molten iron purifying agent and a preparation process, wherein 10-30% of calcium carbide, 30-55% of perlite, 1-2% of epoxy resin and 5-30% of glass are weighed, mixed and crushed into a crushed mixture A, the crushed mixture A is ground into a ground mixture A by a grinding device and processed into a particle size of 100-200 meshes, 2-4% of nano adhesive is put into a container with clear water to be stirred to form a suspension emulsion, the ground mixture A is put into the suspension emulsion to be stirred and mixed again to form a mixture B, the mixture B is sent into a drying box to be dried into a block structure, the block structure is put into a granulator again to be prepared into granules, the granules are put into a mixer, spraying 5-10% of surface treating agent on the globule body, performing cross-linking reaction with epoxy resin embedded on the surface of the globule body at 100-200 ℃ for 1-2h to form a porous globule body, putting the porous globule body into a mixer, then putting 2-14% of bentonite and a small amount of clear water into the mixer, stirring and mixing for 1-2h to form an adsorption porous globule body, then discharging the adsorption porous globule body into a drying box for drying to form the molten iron purifying agent, wherein the molten iron purifying agent has a larger sphere structure and a larger weight, can quickly fall into molten iron after being put into the molten iron, removes slag on the surface of the molten iron through the bentonite wrapped outside the adsorption porous globule body, and can enter the molten iron to remove sulfur and phosphorus in the interior so as to be efficiently removed.
The purpose of the invention can be achieved by adopting the following technical scheme:
a blast furnace molten iron purifying agent is prepared from the following raw materials in percentage by weight:
10-30% of calcium carbide, 30-55% of perlite, 5-30% of glass, 5-10% of surface treating agent, 2-4% of nano adhesive, 2-14% of bentonite and 1-2% of epoxy resin.
Preferably, the bentonite has a montmorillonite content of up to 99%.
Preferably, the perlite has a water content of less than 2%.
Preferably, the glass is waste recycled glass.
A preparation process of a blast furnace molten iron purifying agent comprises the following steps:
a milling step 1: weighing 10-30% of calcium carbide, 30-55% of perlite, 1-2% of epoxy resin and 5-30% of glass, mixing and crushing to obtain a crushed mixture A;
and a milling step 2: grinding the crushed mixture A into a ground mixture A by a grinding device and processing the ground mixture A to the granularity of 100-200 meshes;
material mixing step 1: 2-4% of the nano adhesive is put into a container with clear water and stirred to form a suspension emulsion;
and a material mixing step 2: adding the milled mixture A into the suspending emulsion, and stirring and mixing again to form a mixture B;
drying granulation step 1: conveying the mixture B into a drying box for drying to form a block structure;
drying and granulating step 2: putting the block structure into a granulator again to prepare granules;
pore increasing step 1: putting the spheroids into a mixer, spraying 5-10% of surface treatment agent on the spheroids, and carrying out crosslinking reaction with epoxy resin embedded in the surfaces of the spheroids at 100-200 ℃ for 1-2h to form porous spheroids;
a wrapping step 1: putting the porous spheroids into a mixer, and then putting 2-14% of bentonite and a small amount of clear water into the mixer;
and (2) a wrapping step: stirring and mixing for 1-2h to form adsorption porous globules, and then discharging into a drying oven for drying treatment to form the molten iron purifying agent.
Preferably, the mixture a is milled to a particle size of 200 mesh in the milling step 2.
Preferably, the surface treatment agent is sprayed and sprayed at 200 ℃ in the pore-increasing step 1 and reacted for 2 hours.
Preferably, the temperature of the drying oven in both the coating step 2 and the drying and granulating step 1 is 200 ℃.
The invention has the beneficial technical effects that:
the invention provides a blast furnace molten iron purifying agent and a preparation process thereof, 10-30% of calcium carbide, 30-55% of perlite, 1-2% of epoxy resin and 5-30% of glass are weighed, mixed and crushed into a crushed mixture A, the crushed mixture A is ground into a ground mixture A by a grinding device and processed to the granularity of 100-200 meshes, 2-4% of nano adhesive is put into a container with clear water to be stirred to form suspoemulsion, the ground mixture A is put into the suspoemulsion to be stirred and mixed again to form a mixture B, the mixture B is sent into a drying box to be dried into a block structure, the block structure is put into a granulator to be prepared into granules, the granules are put into a mixer, 5-10% of a surface treating agent is sprayed on the granules to perform cross-linking reaction with the epoxy resin embedded in the surfaces of the granules at 100-200 ℃ for 1-2h to form porous granules, the porous granules are put into the mixer, then 2-14% of bentonite and a small amount of surface treating agent are mixed to form a mixture, the porous granules which are stirred and discharged into a drying box to remove the iron slag and the porous granules with high-efficiency, and the iron absorbing water purifying agent is put into the porous granules to remove the molten iron.
Detailed Description
In order to make the technical solutions of the present invention more clear and definite for those skilled in the art, the present invention is further described in detail with reference to the following examples, but the embodiments of the present invention are not limited thereto.
A blast furnace molten iron purifying agent is prepared from the following raw materials in percentage by weight:
10-30% of calcium carbide, 30-55% of perlite, 5-30% of glass, 5-10% of surface treating agent, 2-4% of nano adhesive, 2-14% of bentonite and 1-2% of epoxy resin.
In this example, the montmorillonite content of bentonite reached 99%.
In this example, the perlite has a water content of less than 2%.
In this example, the glass used was waste recovered glass.
Weighing 10-30% of calcium carbide, 30-55% of perlite, 1-2% of epoxy resin and 5-30% of glass, mixing and crushing the calcium carbide into a crushed mixture A, grinding the crushed mixture A into a ground mixture A by a grinding device, processing the ground mixture A into a particle size of 100-200 meshes, putting 2-4% of a nano adhesive into a container with clear water, stirring to form a suspension emulsion, putting the ground mixture A into the suspension emulsion, stirring and mixing again to form a mixture B, putting the mixture B into a drying box, drying into a block structure, putting the block structure into a granulator, preparing into spherical particles, putting the spherical particles into a mixer, spraying 5-10% of a surface treatment agent onto the spherical particles, performing a cross-linking reaction with the epoxy resin embedded on the surfaces of the spherical particles at 100-200 ℃ for 1-2h to form porous spherical particles, putting the porous spherical particles into the mixer, then putting 2-14% of bentonite and a small amount of clear water into the mixer, stirring and mixing for 1-2h to form adsorption spherical particles, and discharging the porous spherical particles into the drying box to form a purifying agent.
In this example, the grain size of the milled mixture a in the milling step 2 was 200 mesh.
In this example, the surface treatment agent was sprayed and sprayed at 200 ℃ in the porosification step 1 and reacted for 2 hours.
In this example, the temperature of the drying oven in both the coating step 2 and the drying granulation step 1 was 200 ℃.
The above description is only for the purpose of illustrating the present invention and is not intended to limit the scope of the present invention, and any person skilled in the art can substitute or change the technical solution of the present invention and its conception within the scope of the present invention.
Claims (7)
1. A preparation process of a blast furnace molten iron purifying agent is characterized by comprising the following steps: the method comprises the following steps:
the blast furnace molten iron purifying agent is prepared from the following raw materials in percentage by weight:
10-30% of calcium carbide, 30-55% of perlite, 5-30% of glass, 5-10% of surface treating agent, 2-4% of nano adhesive, 2-14% of bentonite and 1-2% of epoxy resin;
a milling step 1: weighing 10-30% of calcium carbide, 30-55% of perlite, 1-2% of epoxy resin and 5-30% of glass, mixing and crushing to obtain a crushed mixture A;
and a milling step 2: grinding the crushed mixture A into a ground mixture A by a grinding device and processing the ground mixture A to the granularity of 100-200 meshes;
material mixing step 1: 2-4% of the nano adhesive is put into a container with clear water and stirred to form a suspension emulsion;
and a material mixing step 2: adding the ground powder mixture A into the suspension emulsion, and stirring and mixing again to form a mixture B;
drying granulation step 1: conveying the mixture B into a drying box for drying to form a block structure;
drying and granulating step 2: putting the block structure into a granulator again to prepare into granules;
pore increasing step 1: putting the granules into a mixer, spraying 5-10% of surface treatment agent on the granules, and performing crosslinking reaction with epoxy resin embedded in the surfaces of the granules at 100-200 ℃ for 1-2h to form porous granules;
a wrapping step 1: putting the porous spheroids into a mixer, and then putting 2-14% of bentonite and a small amount of clear water into the mixer;
and (2) a wrapping step: stirring and mixing for 1-2h to form adsorption porous spherulites, and then discharging the spherulites into a drying box for drying treatment to form the molten iron purifying agent.
2. The preparation process of the blast furnace molten iron purifying agent according to claim 1, characterized in that: the montmorillonite content in the bentonite reaches 99 percent.
3. The preparation process of the blast furnace molten iron purifying agent according to claim 2, characterized in that: the water content of the perlite is less than 2 percent.
4. The preparation process of the blast furnace molten iron purifying agent according to claim 3, characterized in that: the glass is waste recycled glass.
5. The preparation process of the blast furnace molten iron purifying agent according to claim 4, characterized in that: the mixture a was milled to a particle size of 200 mesh in the milling step 2.
6. The preparation process of the blast furnace molten iron purifying agent according to claim 5, characterized in that: in the pore-increasing step 1, a surface treatment agent is sprayed at 200 ℃ and reacted for 2h.
7. The preparation process of the blast furnace molten iron purifying agent according to claim 6, characterized in that: the temperature of the drying oven in both the coating step 2 and the drying granulation step 1 was 200 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111517480.5A CN114182054B (en) | 2021-12-09 | 2021-12-09 | Blast furnace molten iron purifying agent and preparation process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111517480.5A CN114182054B (en) | 2021-12-09 | 2021-12-09 | Blast furnace molten iron purifying agent and preparation process thereof |
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| CN114182054A CN114182054A (en) | 2022-03-15 |
| CN114182054B true CN114182054B (en) | 2023-02-03 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001303116A (en) * | 2000-04-27 | 2001-10-31 | Kawasaki Steel Corp | Desulfurizing agent for molten iron and its using method |
| JP2002037645A (en) * | 2000-05-19 | 2002-02-06 | Asahi Glass Co Ltd | Fine hollow aluminosilicate glass ball and its manufacturing method |
| CN101219462A (en) * | 2008-01-23 | 2008-07-16 | 河南通宇冶材集团有限公司 | High-energy hot metal purifying agent and method for producing the same |
| JP2009269948A (en) * | 2008-04-30 | 2009-11-19 | Emaus Kyoto:Kk | Porous body and its production method |
| CN103589826A (en) * | 2013-10-30 | 2014-02-19 | 吴江市液铸液压件铸造有限公司 | Molten iron slag collecting agent and preparation method thereof |
| JP2015094940A (en) * | 2013-11-14 | 2015-05-18 | 日東電工株式会社 | Diffusion reflection sheet |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8186519B2 (en) * | 2005-01-07 | 2012-05-29 | Emaus Kyoto, Inc. | Porous cured epoxy resin |
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2021
- 2021-12-09 CN CN202111517480.5A patent/CN114182054B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001303116A (en) * | 2000-04-27 | 2001-10-31 | Kawasaki Steel Corp | Desulfurizing agent for molten iron and its using method |
| JP2002037645A (en) * | 2000-05-19 | 2002-02-06 | Asahi Glass Co Ltd | Fine hollow aluminosilicate glass ball and its manufacturing method |
| CN101219462A (en) * | 2008-01-23 | 2008-07-16 | 河南通宇冶材集团有限公司 | High-energy hot metal purifying agent and method for producing the same |
| JP2009269948A (en) * | 2008-04-30 | 2009-11-19 | Emaus Kyoto:Kk | Porous body and its production method |
| CN103589826A (en) * | 2013-10-30 | 2014-02-19 | 吴江市液铸液压件铸造有限公司 | Molten iron slag collecting agent and preparation method thereof |
| JP2015094940A (en) * | 2013-11-14 | 2015-05-18 | 日東電工株式会社 | Diffusion reflection sheet |
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| CN114182054A (en) | 2022-03-15 |
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