CN101244941B - Method for manufacturing blast furnace stemming - Google Patents
Method for manufacturing blast furnace stemming Download PDFInfo
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- CN101244941B CN101244941B CN 200810054673 CN200810054673A CN101244941B CN 101244941 B CN101244941 B CN 101244941B CN 200810054673 CN200810054673 CN 200810054673 CN 200810054673 A CN200810054673 A CN 200810054673A CN 101244941 B CN101244941 B CN 101244941B
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Abstract
A preparation method for blast furnace taphole clay has the following processes, bulk raw materials are heated to 20 to 40 DEG C and are mixed evenly, the particle size of the bulk raw materials is 3 to 0.074mm, binder is then added, the mixture is grinned for 40 to 60 minutes, which is then pressed and formed, the additive and each bulk raw material are put into separate holding tank, the binderis put into a holding tank, the raw material is heated to 20 to 40 DEG C in the holding tank, binder is added into the clay mill to be grinned for 40 to 60 minutes, when the temperature is 50 to 70DEG C, material is pressed and formed in a forming machine, the heating method is that lateral heating pipes are arranged outside the equipment, and medium with the melting point equal to or above 100 DEG C is pumped in. The preparation method of the blast furnace taphole clay has low labor intensity and high production efficiency.
Description
Technical field
The present invention relates to a kind of method for manufacturing blast furnace stemming.
Background technology
Small blast furnace (1500m
3Below) technology (technical parameter that comprises stemming itself is with the processing parameter) parameter of stemming and large blast furnace stemming have the difference of essence, if be to satisfy the stable requirement of tapping a blast furnace of large blast furnace by the processing parameter of small blast furnace stemming.The Different Effects of raw-material difference, particularly wedding agent the technical feature of large blast furnace stemming.Existing method for manufacturing blast furnace stemming technology is simple, and operator's labour intensity is big, and it is inaccurate to prepare burden, and material temperature, device temperature are difficult to control, thereby quality product is had certain influence, and be in particular in: 1. pug is inhomogeneous, the product performance instability; 2. it is inaccurate to prepare burden, can not the requirement of strict execution technique prescription.
Summary of the invention
In order to overcome the above-mentioned deficiency of existing method for manufacturing blast furnace stemming, the invention provides the method for manufacturing blast furnace stemming that a kind of labour intensity is little, production efficiency is high.
Method for manufacturing blast furnace stemming is after prescription is determined, industrial technology parameter particularly temperature is the important factor that directly influences the blast furnace mud performance.Major industry is given birth to technical parameter and comprised: temperature required at each raw material of Various Seasonal, each equipment is temperature required, optimal mud temperature when grinding mud time and discharging.
The raw material for preparing this blast furnace mud can be with known stemming raw material, three kinds of known raw materials described as follows.
The weight proportion that I prepares the raw material of this blast furnace mud is:
Additive 5～20
Other composition fused corundom 40～60
II prepare this blast furnace mud raw material weight proportion also can for:
Additive 5～20
Other composition fused corundom 40～60
III prepare this blast furnace mud raw material weight proportion can also for:
Additive 5～20
Other composition fused corundom 40～60
The granularity of diffusing shape raw material such as additive and fused corundom, silicon carbide, clay, coke powder and sericite is 3mm～0.074mm.
It is even that the diffusing shape raw material of preparation stemming is heated to 20 ℃ of-40 ℃ of dry blending, adds wedding agent then, ground 40 ℃ in mud-60 minutes, extrusion molding.
The optimum weight proportioning for preparing the raw material of this blast furnace mud is:
Fused corundom 50 silicon carbide 17.5 clays 7.5 coke powders 6.5
Sericite 7.5 additives 12.5 wedding agents 20.
The used additive of this blast furnace mud is following any known additive, and its main component has fused corundom, coke powder, SiC, clay, sericite, as the additive of following composition (weight proportion):
Fused corundom 40-60 coke powder 10-15 SiC 15-20 clay 5-15
Sericite 10-15.
The used wedding agent of this blast furnace mud is following any known wedding agent:
Tar wedding agent, resinoid bond, waterbinding agent, pitch wedding agent
Generally use the tar wedding agent, its composition is mainly: coal tar
Processing parameter: material temperature: 20 ℃-40 ℃
Device temperature: 50 ℃-70 ℃
Grind the mud time: 40 ℃-60 minutes
Mud temperature during discharging: 50 ℃-70 ℃.
Additive and each diffusing shape raw material respectively are placed on a storage tank, wedding agent is placed on a storage tank, in storage tank, raw material is heated to each at 20 ℃-40 ℃, general storage tank is heated to 50 ℃-70 ℃, the weighing funnel device is heated to 50 ℃-70 ℃, the temperature that guarantees raw material remains on 20 ℃-40 ℃, and pug mill, disk feeder and shaper all are heated to 120～140 ℃, remain on 50 ℃-70 ℃ to guarantee material temperature.To loose the shape raw material pug mill dry blending 10～15 minutes, in pug mill, add wedding agent and ground system 40-60 minute, molded at 50 ℃-70 ℃ in the shaper agent.
The type of heating of storage tank, weighing funnel device, pug mill, disk feeder and shaper relates to add the gordian technique scheme of material temperature control, the available electrically heated of heating of storage tank, weighing funnel device, pug mill, disk feeder and shaper, use the thermometer displays temperature, by the temperature that manually switches on or off power supply control raw material, also available heat rly. and contactor automatic control mode are controlled the upper limit and the lower limit of material temperature.At present the best way is that appearance at storage tank, weighing funnel device, pug mill, disk feeder and shaper is provided with horizontal heating tube, the feeding melting point is not less than 100 ℃ medium heating in heating tube, because the temperature variation of raw material is slow, can be by the flow of Artificial Control heating medium temperature with raw material in control storage tank, weighing funnel device, pug mill, disk feeder and the shaper, the temperature of raw material is more stable like this, and control is convenient.The heating medium that the present invention uses always has steam, water, thermal oil.In storage tank storage tank, weighing funnel device, pug mill, disk feeder and shaper, thermometer is installed, more convenient to temperature controlling.
This method for manufacturing blast furnace stemming has following advantage: (1) constant product quality, be in particular in the product stable physical-chemical indexes as; Because the stable control of device temperature, the wedding agent add-on is stable, stemming grinds system evenly, finally show horse summer value stabilization, on-the-spot use stable; (2) stemming direct labor labour intensity reduces; (3) the stemming workability is good, mainly show the on-the-spot mud moderate pressure of beating, there is not adhesion between every block of mud, operator's labour intensity is low, existing stemming opening time 5～15 minutes, the opening time of this blast furnace mud shortens 3～5 minutes than existing stemming, and in use use cost reduces, and stemming consumption reduces by 0.15～0.2Kg/ ton iron.
Description of drawings
Fig. 1 is the schematic flow sheet of this method for manufacturing blast furnace stemming embodiment.
Fig. 2 is a fused corundom storage tank synoptic diagram.
Fig. 3 weighing funnel device synoptic diagram.
Fig. 4 is pug mill, disk feeder and shaper synoptic diagram.
The relative Fig. 1 with Fig. 4 of Fig. 2, Fig. 3 amplifies.
Among the above-mentioned figure:
1, fused corundom storage tank 2, silicon carbide storage tank 3, clay storage tank 4, coke powder storage tank 5, sericite storage tank 6, additive storage tank 7, dummy receiver 8, dummy receiver 9, vibrator 10, electronic feeding machine 11, weighing funnel device 12, discharge gate 13, rotary conveyor 14, pug mill 15, disk feeder 16, shaper 17, measuring apparatus 18, tar pump 19, tar jar 20, stir pump 21, heating tube 22, heating tube 23, heating tube 24, heating tube 25, heating tube
Embodiment
Describe this large blast furnace stemming preparation method embodiment in detail below in conjunction with embodiment, but this large blast furnace stemming preparation method is not limited to following embodiment.
Embodiment one
The preparation process of present embodiment is referring to Fig. 1, with the shape raw material that looses by storage tank as fused corundom is heated to 40 ℃ by fused corundom storage tank 1 heating tube 21 outward, referring to Fig. 2, from fused corundom storage tank 1, silicon carbide storage tank 2, clay storage tank 3, coke powder storage tank 4, sericite storage tank 5 and additive storage tank 6 are by the electronic feeding machine 10 shape raw material fused corundom that will loose respectively, silicon carbide, clay, coke powder, sericite and additive are added in the weighing funnel device 11, weighing funnel device 11 is heated to 70 ℃ by the heating tube 22 in the outside, to guarantee that the raw material in the weighing funnel device 11 is 30 ℃-40 ℃, the heating medium of present embodiment in heating tube be WRY type high temperature heat conductive oil referring to Fig. 3, (reprovision than) of the shape raw material that looses is:
Fused corundom 60 silicon carbide 20 clays 10 coke powders 8
Sericite 10 additives 20
Every part of 800kg.
It is good after rotary conveyor 13 is delivered to pug mill 14 that various raw materials are added to 11 weighings of weighing funnel device respectively, dry blending 15 minutes, by rotary conveyor 13, simultaneously the wedding agent of weight proportion 25 is joined pug mill 14 by tar pump 18, pug mill 14 backings 60 minutes, deliver to disk feeder 15, pug is delivered to shaper 16 70 ℃ of extrusion moldings by disk feeder 15.The composition (weight proportion) of the blast furnace mud of preparation is:
Fused corundom 60 silicon carbide 20 clays 10 coke powders 8
Embodiment two
The preparation process of present embodiment is identical with embodiment one, and the weight proportion and the preparation temperature of different with embodiment one is raw material are different.The weight proportion of the diffusing shape raw material of present embodiment is:
Fused corundom 40 silicon carbide 15 clays 5 coke powders 5
Is 20 ℃ with diffusing shape raw material in the temperature of storage tank, the heating tube 22 by the outside at weighing funnel device 11 is heated to 20 ℃-30 ℃, dry blending 10 minutes adds weight proportion and is behind 15 the wedding agent pug mill 14 backings 40 minutes, and shaper 16 is molded 50 ℃ of agent.The composition of the blast furnace mud of making (weight proportion) is:
Fused corundom 40 silicon carbide 15 clays 5 coke powders 5
Embodiment three
The step of the preparation of present embodiment is identical with embodiment one, is that the weight proportion of raw material is different with embodiment one difference, and the composition of the blast furnace mud that present embodiment is made (weight proportion) is:
Fused corundom 50 silicon carbide 17.5 clays 7.5 coke powders 6.5
Sericite 7.5 additives 12.5 wedding agents 20.
Embodiment four
The step of the preparation of present embodiment is identical with embodiment one, is that the weight proportion of raw material is different with embodiment one difference, and the composition of the blast furnace mud that present embodiment is made (weight proportion) is:
Fused corundom 60 silicon carbide 20 clays 10 coke powders 8
Embodiment five
The step of the preparation of present embodiment is identical with embodiment one, is that the weight proportion of raw material is different with embodiment one difference, and the composition of the blast furnace mud that present embodiment is made (weight proportion) is:
Fused corundom 40 silicon carbide 15 clays 5 coke powders 5
Claims (1)
1. method for manufacturing blast furnace stemming, the weight proportion of the raw material of preparation blast furnace mud is:
Additive 5～20 wedding agents 15～25
Other composition fused corundom 40～60 silicon carbide 15～20
Clay 5～10 coke powders 5～8 sericites 5～10;
It is that diffusing shape raw material is heated to 20 ℃ of-40 ℃ of dry blending is even, and the granularity of the shape raw material that looses is 3mm～0.074mm, adds wedding agent then, grinds 40 ℃ in mud-60 minutes, extrusion molding;
The weight proportion of the composition of said additive is:
Fused corundom 40-60 coke powder 10-15 SiC 15-20
Clay 5-15 sericite 10-15;
Additive and each diffusing shape raw material respectively are placed on a storage tank, wedding agent is placed on a storage tank, in storage tank, raw material is heated to each at 20 ℃-40 ℃, storage tank is heated to 50 ℃-70 ℃, the weighing funnel device is heated to 50 ℃-70 ℃, the temperature that guarantees raw material remains on 20 ℃-40 ℃, and pug mill, disk feeder and shaper all are heated to 120～140 ℃, remain on 50 ℃-70 ℃ to guarantee material temperature; To loose the shape raw material pug mill dry blending 10～15 minutes, in pug mill, add wedding agent and ground system 40-60 minute, molded at 50 ℃-70 ℃ in the shaper agent;
Said type of heating is that the appearance at storage tank, weighing funnel device, pug mill, disk feeder and shaper is provided with horizontal heating tube, the feeding melting point is not less than 100 ℃ medium heating in heating tube, and the flow of control heating medium is with the temperature of raw material in control storage tank, weighing funnel device, pug mill, disk feeder and the shaper; Said heating medium is a thermal oil.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200810054673 CN101244941B (en) | 2008-03-20 | 2008-03-20 | Method for manufacturing blast furnace stemming |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200810054673 CN101244941B (en) | 2008-03-20 | 2008-03-20 | Method for manufacturing blast furnace stemming |
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| CN101244941A CN101244941A (en) | 2008-08-20 |
| CN101244941B true CN101244941B (en) | 2011-03-02 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102557691A (en) * | 2012-01-17 | 2012-07-11 | 山国强 | Low-cost blast furnace stemming |
| CN102887719B (en) * | 2012-11-09 | 2013-10-30 | 高金菊 | Preparation method of bonding agent for blast furnace stemming with good opening performance |
| CN111592367B (en) * | 2020-06-05 | 2023-01-20 | 郑州市瑞沃耐火材料有限公司 | Anhydrous stemming for blast furnace taphole |
| CN112461635A (en) * | 2020-12-08 | 2021-03-09 | 首钢集团有限公司 | Stemming sample and preparation method thereof |
| CN114538941A (en) * | 2022-03-23 | 2022-05-27 | 湖南齐丰新材料有限公司 | Preparation method of environment-friendly stemming for submerged arc furnace |
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Effective date of registration: 20160613 Address after: Gu Xian Cun Dong Huang Shui Zhen Yangqu County 030100 Shanxi city of Taiyuan Province Patentee after: SHANXI LUWEIBAO TAIGANG REFRACTORIES COMPANY LIMITED Address before: 030003 Taiyuan City, Shanxi province pointed lawn street, No. 2 Patentee before: Taiyuan Iron & Steel (Group) Co., Ltd. |