CN108558375A - A kind of preparation method of big blast furnace long-life main iron runner pouring material - Google Patents

A kind of preparation method of big blast furnace long-life main iron runner pouring material Download PDF

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Publication number
CN108558375A
CN108558375A CN201810510561.4A CN201810510561A CN108558375A CN 108558375 A CN108558375 A CN 108558375A CN 201810510561 A CN201810510561 A CN 201810510561A CN 108558375 A CN108558375 A CN 108558375A
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Prior art keywords
blast furnace
iron runner
preparation
powder
main iron
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Inventor
佘春霞
许华
崔健健
张文
许云芬
郑韬
钱忠华
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ZHEJIANG CHANGXING BAOSHENG FURNACE CHARGE Co Ltd
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ZHEJIANG CHANGXING BAOSHENG FURNACE CHARGE Co Ltd
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Priority to CN201810510561.4A priority Critical patent/CN108558375A/en
Publication of CN108558375A publication Critical patent/CN108558375A/en
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Abstract

The invention discloses a kind of big blast furnace preparation methods of long-life main iron runner pouring material, comprise the following steps that successively：Broken, crushing, fine grinding, stirring, detection, packaging, all materials of the present invention pass through ball mill and air-stream type ultrafine pulverizer crushes and fine grinding, epigranular, avoid the caused peeling due to fine powder after iron is more than 80,000 tons, the service life for substantially increasing castable, by 2500m3The disposable iron of blast furnace is increased to 150,000 tons from 100,000 tons, greatly improves production efficiency；Product amount of water is few, and slamp value is big, and applied at elevated temperature is functional, and thermal shock resistance is strong, and blast furnace iron runner iron is big and refractory consumption rate is few；It is first detected before gauging of products packaging, ensures product qualification rate, avoid substandard product into factory, greatly improve the stability of product quality.

Description

A kind of preparation method of big blast furnace long-life main iron runner pouring material
【Technical field】
The technical field more particularly to a kind of big blast furnace prepared the present invention relates to castable refractory is poured with long-life sow The preparation method of material feeding.
【Background technology】
In recent years, with the development of blast furnace smelting technology, rate of driving continues to increase, and national blase furnace cast iron has reached within 2011 6.28 hundred million tons, blast furnace iron outlet groove refractory consumption rate amount is larger.Al2O3- SiC-C matter castables have intensity height, resistance to erosion, resist The features such as thermal shock and longer service life, while the high-termal conductivity of carbon and silicon carbide, low thermal expansion and slag non wettability all assign The good physical and chemical performance of this material system, to be widely used in blast furnace casting trench system.As furnace volume constantly increases Greatly, the requirement for disposably going out iron is continuously improved, therefore, Al2O3- SiC-C matter iron runner material also accordingly towards high iron, High stability, big slamp value direction develop.
To further increase the performance of iron runner castable, domestic and foreign scholars are made by optimizing matrix to improve it one after another Use performance.Such as the patent No.：A kind of CN201110044222.X " novel main iron runner casting material " patented technology, discloses modified Nano Carbon dust replaces pitch, improves its antioxygenic property and carbon yield, moreover it is possible to anti-spalling when improving baking, but thermal shock resistance It is not satisfactory；The patent No.：" one kind being more than 2500m to CN201210281186.33Blast furnace main iron channel castable " patented technology, it is open Addition gahnite powder, nanoscale zirconium silicate, Bubble zirconia simultaneously do nanometer combination with silicon dioxide gel suspension Agent improves the thermal shock resistance of castable, but cost also accordingly improves many, and anti-oxidant is solved well not yet Certainly；The patent No.：CN201210098290.9 " a kind of iron runner castable and preparation method thereof " patented technology is disclosed with modified stone Black part replaces pelletted pitch, improves its antioxygenic property, reduces environmental pollution, but high temperature break resistant intensity is reduced accordingly.
With the continuous improvement of smelting technique progress, lead to iron time lengthening, interval time of tapping a blast furnace is short, and it is resistance to increase iron tap channel The erosion damage degree of fiery material, blast furnace iron outlet groove is proposed with resistance to material the requirement of long-life.Needed for common castable Alumina powder, silicon carbide micro-powder granularity are not uniform enough, after iron is more than 80,000 tons, usually since powder size is inadequate Uniform reason, it may appear that crack even will appear peeling when serious, iron is caused not increase.
It is therefore desirable to be improved to the prior art, a kind of system of big blast furnace long-life main iron runner pouring material is developed Preparation Method.
【Invention content】
The purpose of the present invention is exactly to solve the problems of the prior art, proposes a kind of big blast furnace long-life main iron runner pouring The preparation method of material, all materials pass through ball mill and air-stream type ultrafine pulverizer crushes and fine grinding, epigranular, The caused peeling due to fine powder after iron is more than 80,000 tons is avoided, the service life of castable is substantially increased, Product amount of water is few, and slamp value is big, and applied at elevated temperature is functional, and thermal shock resistance is strong, and blast furnace iron runner iron is big and fire proofed wood Material consumption is few, and is first detected before gauging of products packaging, ensures product qualification rate, greatly improves the stability of product quality.
To achieve the above object, the present invention proposes a kind of preparation method of big blast furnace long-life main iron runner pouring material, It comprises the following steps that successively：
A) it is crushed：By proportioned Brown Alundum particle, plate diamond spar, silicon-carbide particle, aluminate cement, antioxidant, Water-reducing agent, swelling agent, dispersant, explosion-proof fiber, coagulant and water, dispensing are crushed to jaw crusher；
B) it crushes：The material completed will be crushed in step a to be added in ball mill, then Brown Alundum fine powder, silicon carbide is micro- Powder, ultrafine silica powder, Reactive alumina, nano-carbon powder are added in ball mill, are crushed to mixed material；
C) fine grinding：The mixed material for crushing completion in step b is added in air-stream type ultrafine pulverizer and carries out fine grinding；
D) it stirs：By in step c fine grinding complete mixed material put into iron runner material blender be stirred 10min~ 15min makes material be sufficiently mixed uniformly；
E) it detects：The material that spectrometer and X-ray diffractometer complete step d stirrings is inspected by random samples；
F) it packs：By the qualified material metering of detection, packaging, storage.
Preferably, the granularity of the Brown Alundum particle is 3~5mm, the granularity of the Brown Alundum fine powder is 0~45 μm, the granularity of the Reactive alumina is 0~10 μm, Al in Reactive alumina2O3＞ 99.12wt%, it is described Aluminate cement is aluminous cement, and the granularity of the aluminous cement is 0~45 μm, Al in aluminous cement2O3＞ The granularity of 70.35wt%, CaO ＞ 28.45wt%, the ultrafine silica powder are 0~10 μm, SiO in ultrafine silica powder2＞ 99.15wt%.
Preferably, the antioxidant is one or more in metal silicon powder, metallic aluminium powder, metal magnesium powder Mixture.
Preferably, the water-reducing agent is calcium lignosulfonate, the one or more of sodium tripolyphosphate and high-efficiency water-reducing agent of poly-carboxylic acid Mixture.
Preferably, the swelling agent is bulking agent of calcium aluminate.
It is mixed preferably, the dispersant is sodium tripolyphosphate and calgon.
Preferably, the explosion-proof fiber is polyurethanes fiber.
Preferably, the coagulant is lithium carbonate.
Preferably, the granularity for the mixed material that streaming micronizer fine grinding is completed in the step c is 150 mesh ~800 mesh.
Beneficial effects of the present invention：A kind of preparation method of big blast furnace long-life main iron runner pouring material of the present invention, owns Material pass through ball mill and air-stream type ultrafine pulverizer crushes and fine grinding, epigranular, avoid when iron being more than 8 The caused peeling due to fine powder after ten thousand tons, substantially increases the service life of castable, by 2500m3The one of blast furnace Secondary property iron is increased to 150,000 tons from 100,000 tons, greatly improves production efficiency；Product amount of water is few, and slamp value is big, and high temperature makes With functional, thermal shock resistance is strong, and blast furnace iron runner iron is big and refractory consumption rate is few；It is first carried out before gauging of products packaging Detection ensures product qualification rate, avoids substandard product into factory, greatly improve the stability of product quality.
The feature and advantage of the present invention will be described in detail by embodiment.
【Specific implementation mode】
In order to make the objectives, technical solutions and advantages of the present invention clearer, below by embodiment, to the present invention into Row is further described.However, it should be understood that the specific embodiments described herein are merely illustrative of the present invention, and do not have to In limiting the scope of the invention.In addition, in the following description, descriptions of well-known structures and technologies are omitted, to avoid need not Obscure idea of the invention in strategic point.
The embodiment of the present invention provides a kind of preparation method of big blast furnace long-life main iron runner pouring material, includes following successively Processing step：
A) it is crushed：By proportioned Brown Alundum particle, plate diamond spar, silicon-carbide particle, aluminate cement, antioxidant, Water-reducing agent, swelling agent, dispersant, explosion-proof fiber, coagulant and water, dispensing are crushed to jaw crusher；
B) it crushes：The material completed will be crushed in step a to be added in ball mill, then Brown Alundum fine powder, silicon carbide is micro- Powder, ultrafine silica powder, Reactive alumina, nano-carbon powder are added in ball mill, are crushed to mixed material；
C) fine grinding：The mixed material for crushing completion in step b is added in air-stream type ultrafine pulverizer and carries out fine grinding；
D) it stirs：By in step c fine grinding complete mixed material put into iron runner material blender be stirred 10min~ 15min makes material be sufficiently mixed uniformly；
E) it detects：The material that spectrometer and X-ray diffractometer complete step d stirrings is inspected by random samples；
F) it packs：By the qualified material metering of detection, packaging, storage.
The granularity of the Brown Alundum particle is 3~5mm, and the granularity of the Brown Alundum fine powder is 0~45 μm, described The granularity of Reactive alumina is 0~10 μm, Al in Reactive alumina2O3＞ 99.12wt%, the aluminic acid brine Mud is aluminous cement, and the granularity of the aluminous cement is 0~45 μm, Al in aluminous cement2O3＞ 70.35wt%, The granularity of CaO ＞ 28.45wt%, the ultrafine silica powder are 0~10 μm, SiO in ultrafine silica powder2＞ 99.15wt%.
The antioxidant is one or more mixtures in metal silicon powder, metallic aluminium powder, metal magnesium powder.Institute The water-reducing agent stated is one or more of mixtures of calcium lignosulfonate, sodium tripolyphosphate and high-efficiency water-reducing agent of poly-carboxylic acid.The expansion Agent is bulking agent of calcium aluminate.The dispersant is that sodium tripolyphosphate and calgon mix.The explosion-proof fiber It is polyurethanes fiber.The coagulant is lithium carbonate.The mixing that streaming micronizer fine grinding is completed in the step c The granularity of material is the mesh of 150 mesh~800.
A kind of product basic mechanical design feature prepared by the preparation method of big blast furnace long-life main iron runner pouring material of the present invention Index is as follows：
Product is through Zhejiang Province's refractory products quality inspection Spot detection, examining report number：2017WTNJ0820, inspection Survey that result meets company standard and new product is put on record book requirement.
A kind of preparation method of big blast furnace long-life main iron runner pouring material of the present invention, all materials pass through ball mill It crushes and fine grinding, epigranular, is avoided after iron is more than 80,000 tons due to fine powder with air-stream type ultrafine pulverizer It is peeled off caused by reason, the service life of castable is substantially increased, by 2500m3The disposable iron of blast furnace is from 100,000 tons 150,000 tons are increased to, production efficiency is greatly improved；Product amount of water is few, and slamp value is big, and applied at elevated temperature is functional, and thermal shock is stablized Property it is strong, blast furnace iron runner iron is big and refractory consumption rate is few；It is first detected before gauging of products packaging, ensures that product is qualified Rate avoids substandard product into factory, greatly improves the stability of product quality.
Above-described embodiment is the description of the invention, is not limitation of the invention, it is any to simple transformation of the present invention after Scheme all belong to the scope of protection of the present invention.

Claims (9)

1. a kind of preparation method of big blast furnace long-life main iron runner pouring material, it is characterised in that：Include that following technique walks successively Suddenly：
A) it is crushed：By proportioned Brown Alundum particle, plate diamond spar, silicon-carbide particle, aluminate cement, antioxidant, diminishing Agent, swelling agent, dispersant, explosion-proof fiber, coagulant and water, dispensing are crushed to jaw crusher；
B) it crushes：The material completed will be crushed in step a to be added in ball mill, then by Brown Alundum fine powder, silicon carbide micro-powder, oxygen SiClx micro mist, Reactive alumina, nano-carbon powder are added in ball mill, are crushed to mixed material；
C) fine grinding：The mixed material for crushing completion in step b is added in air-stream type ultrafine pulverizer and carries out fine grinding；
D) it stirs：By in step c fine grinding complete mixed material put into iron runner material blender be stirred 10min~ 15min makes material be sufficiently mixed uniformly；
E) it detects：The material that spectrometer and X-ray diffractometer complete step d stirrings is inspected by random samples；
F) it packs：By the qualified material metering of detection, packaging, storage.
2. a kind of preparation method of big blast furnace long-life main iron runner pouring material as described in claim 1, it is characterised in that： The granularity of the Brown Alundum particle is 3~5mm, and the granularity of the Brown Alundum fine powder is 0~45 μm, the active oxidation The granularity of aluminium micro mist is 0~10 μm, Al in Reactive alumina2O3＞ 99.12wt%, the aluminate cement are aluminic acid The granularity of calcium cement, the aluminous cement is 0~45 μm, Al in aluminous cement2O3＞ 70.35wt%, CaO ＞ The granularity of 28.45wt%, the ultrafine silica powder are 0~10 μm, SiO in ultrafine silica powder2＞ 99.15wt%.
3. a kind of preparation method of big blast furnace long-life main iron runner pouring material as described in claim 1, it is characterised in that： The antioxidant is one or more mixtures in metal silicon powder, metallic aluminium powder, metal magnesium powder.
4. a kind of preparation method of big blast furnace long-life main iron runner pouring material as described in claim 1, it is characterised in that： The water-reducing agent is one or more of mixtures of calcium lignosulfonate, sodium tripolyphosphate and high-efficiency water-reducing agent of poly-carboxylic acid.
5. a kind of preparation method of big blast furnace long-life main iron runner pouring material as described in claim 1, it is characterised in that： The swelling agent is bulking agent of calcium aluminate.
6. a kind of preparation method of big blast furnace long-life main iron runner pouring material as described in claim 1, it is characterised in that： The dispersant is that sodium tripolyphosphate and calgon mix.
7. a kind of preparation method of big blast furnace long-life main iron runner pouring material as described in claim 1, it is characterised in that： The explosion-proof fiber is polyurethanes fiber.
8. a kind of preparation method of big blast furnace long-life main iron runner pouring material as described in claim 1, it is characterised in that： The coagulant is lithium carbonate.
9. a kind of preparation method of big blast furnace long-life main iron runner pouring material as described in claim 1, it is characterised in that： The granularity for the mixed material that streaming micronizer fine grinding is completed in the step c is the mesh of 150 mesh~800.
CN201810510561.4A 2018-05-24 2018-05-24 A kind of preparation method of big blast furnace long-life main iron runner pouring material Pending CN108558375A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109279880A (en) * 2018-12-05 2019-01-29 钢城集团凉山瑞海实业有限公司 Blast furnace sow castable refractory
CN109627018A (en) * 2018-10-16 2019-04-16 青岛万和装饰门窗工程有限公司 A kind of light weight castable refractory and preparation method thereof suitable for door and window

Citations (1)

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Publication number Priority date Publication date Assignee Title
CN101805195A (en) * 2010-03-19 2010-08-18 蒋美芳 Preparation method of specific high-performance wear-resistant castable for coal burner

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101805195A (en) * 2010-03-19 2010-08-18 蒋美芳 Preparation method of specific high-performance wear-resistant castable for coal burner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109627018A (en) * 2018-10-16 2019-04-16 青岛万和装饰门窗工程有限公司 A kind of light weight castable refractory and preparation method thereof suitable for door and window
CN109279880A (en) * 2018-12-05 2019-01-29 钢城集团凉山瑞海实业有限公司 Blast furnace sow castable refractory

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