CN1227173C - Method for hot-charging, smelting and producing mineral wool fibre by adopting blast furnace - Google Patents
Method for hot-charging, smelting and producing mineral wool fibre by adopting blast furnace Download PDFInfo
- Publication number
- CN1227173C CN1227173C CN02138196.8A CN02138196A CN1227173C CN 1227173 C CN1227173 C CN 1227173C CN 02138196 A CN02138196 A CN 02138196A CN 1227173 C CN1227173 C CN 1227173C
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- China
- Prior art keywords
- slag
- mineral wool
- blast furnace
- furnace
- tempering furnace
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000011490 mineral wool Substances 0.000 title claims abstract description 38
- 239000000835 fiber Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000003723 Smelting Methods 0.000 title claims abstract description 7
- 239000002893 slag Substances 0.000 claims abstract description 58
- 238000005496 tempering Methods 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 14
- 230000002378 acidificating effect Effects 0.000 claims description 9
- 239000000546 pharmaceutical excipient Substances 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 239000000292 calcium oxide Substances 0.000 claims description 7
- 235000012255 calcium oxide Nutrition 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 230000004927 fusion Effects 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 229920000742 Cotton Polymers 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 claims description 2
- -1 sandstone Chemical compound 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000002844 melting Methods 0.000 abstract description 4
- 230000008018 melting Effects 0.000 abstract description 4
- 238000010791 quenching Methods 0.000 abstract 2
- 230000000171 quenching effect Effects 0.000 abstract 2
- 238000007599 discharging Methods 0.000 abstract 1
- 239000012768 molten material Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 12
- 239000000571 coke Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Glass Compositions (AREA)
Abstract
The present invention relates to a method for producing mineral wool fibers of auxiliary raw material by using hot charging smelting of a blast furnace. In the method, blast furnace slag flows from the blast furnace into slag quenching and tempering furnace through a sealed slag discharging channel; by adding the auxiliary raw material or not, the acidity coefficient of melting material can be controlled within a range of 1.09 to 1.20; the temperature of the slag quenching and tempering furnace is maintained at about 1400 DEG C; the material is molten and mixed evenly; the molten material enters a centrifuge through a movable chute, and then the mineral wool fibers can be produced. Energy consumption and cost can be largely reduced by using the method of the present invention, and the produced mineral wool fibers has high quality.
Description
One, technical field
The present invention relates to the production of mineral wool.
Two, background technology
In so far more than 160 year of invention mineral wool in 1840, the major equipment of mineral wool melting is the mineral wool cupola furnace, also has a spot of tank furnace and electric arc furnace (resistance furnace).No matter be any smelting furnace wherein, all need mineral wool raw materials is heated to the high temperature of degree more than 1,000 from normal temperature, in this temperature-rise period, need to consume in a large number the energy with forms such as coke, fuel oil, Sweet natural gas, electric energy.As so that at present domestic the most frequently used mineral wool raw materials---block blast furnace slag is an example: after supposing that 1 ton of block blast furnace slag enters the mineral wool cupola furnace, the temperature of blast furnace slag is heated to 1400 ℃ by normal temperature, the heat of required absorption (comprising the latent heat of fusion) is about 3204000KJ/t, when the fixed carbon content in the coke is 85%, its calorific value is about 28472KJ/kg, and therefore being used for the coke amount that 1 ton of blast furnace slag heats up and fusing is consumed is 112.5kg; When the thermo-efficiency of mineral wool cupola furnace was 35%, the actual coke consumption of 1 ton of blast furnace slag of fusing was 321kg, if be converted to the coke amount of per 1 ton of mineral wool consumption then be about 400 kilograms, this is a no small energy consumption.But as if mineral wool melting consumption coke has been right and proper thing over more than 100 year.If utilize reverse thinking to think deeply to this problem, does you will propose: how blast furnace slag come? it is to form the blocks of solid slag by the cooling of the high-temperature liquid state slag in iron-smelting blast furnace back, form through broken classification again, in the process of cooling of liquid blast furnace, a large amount of heat energy has been slatterned in vain.When these blast furnace slags are used as mineral wool raw materials, in the mineral wool cupola furnace, need to consume a large amount of heat energy again again and melt them, this elder generation is cooled to solid-state blast furnace slag with liquid blast furnace, and then is heated the process into liquid mineral wool melt, obviously is a process that repeats to heat.If before not treating that blast furnace slag cools off for the first time, promptly it is carried out suitable composition adjustment (being used to of adding in addition adjust composition auxiliary material need consume a part of external energy), directly carry out the fine operation of one-tenth of mineral wool then, just can save the energy consumption of a large amount of repeated meltings.Here it is utilizes liquid blast furnace to come the dominant ideas of direct production mineral wool fibre.
Three, summary of the invention
The inventor discovers with liquid slag direct production mineral wool, its prerequisite be the chemistry of its blast furnace slag and physicals must near or meet the requirement of mineral wool production.Generally speaking should meet following condition:
(1) Chemical Composition of slag must meet the requirement of mineral wool Chemical Composition, or Chemical Composition is more approaching, can reach the requirement of mineral wool composition by regulating measure.If its acidity quotient in 0.8～2.5 scope, generally just might be utilized;
(2) relatively stable in certain scope at the Chemical Composition of following period of time slag, fluctuation is little, avoids frequent the change to regulate prescription.
The inventor considers, slagging tap of blast furnace is not successive permanent current process, but the process at an intermittence, so become must be provided with between the fine equipment buffering operation with mineral wool in the tap cinder system, the slag hardening and tempering furnace promptly is set, and it must have the function of insulation and heating.Therefore technical scheme of the present invention is as follows:
A kind of method that adopts the blast furnace slag hot-charging, smelting and producing mineral wool fibre, it is characterized in that blast furnace slag is flowed into the slag hardening and tempering furnace from blast furnace through the sealing ditch of slagging tap, evenly add acidic excipient or unslaked lime from sealing out slag runner simultaneously, acidic excipient can be silica sand, sandstone, silica or poor iron ore etc., with the acidity quotient (Mk) of regulating melt to 1.09～1.20.
Mk＝(SiO
2+Al
2O
3)/(CaO+MgO)
SiO in the formula
2, Al
2O
3, CaO, MgO be their weight percent.The slag hardening and tempering furnace has heating unit, temperature is at 1300～1450 ℃ in the maintenance slag hardening and tempering furnace, heating unit can be the electricity level of inserting on slag hardening and tempering furnace top cover, the electroconductibility of utilizing volts lost between the electrode and blast furnace slag is to slag and acidic excipient or unslaked lime heating, to making in the slag hardening and tempering furnace material fusion and mixing, the mineral wool fibre melt enters whizzer through the stream material mouth and the movable chute of slag hardening and tempering furnace uniformly, produces mineral wool fibre.
Add acidic excipient or unslaked lime and regulate the acidity quotient and the prescription of melt, the composition of prescription can be SiO
2: 38～45% Al
2O
3: 8～13% CaO:28～36% MgO:9～14% Fe
2O
3: 10% of the no more than above-mentioned composition summation of 0.5～1.5% other compositions.If the acidity quotient of blast furnace slag itself in 1.09～1.20 scopes, then need not add other raw material.Adopt the inventive method operating mine cotton fibre, as previously mentioned, reduced energy consumption widely, reduced cost, shortened the production cycle, the mineral wool quality of producing is good equally.
Four, embodiment
Embodiment 1:
Certain steel mill's blast furnace is every two hours slagged tap once approximately, and the temperature of blast furnace slag is about 1400 ℃, and acidity quotient is about 0.87, and the fluctuation range of Chemical Composition is less.Adopt method of the present invention with blast furnace slag direct production mineral wool fibre.Seal out slag runner and slag hardening and tempering furnace other setting of blast furnace, the slag hardening and tempering furnace is molten, and to deposit area be 3.2m
2, can store blast furnace slag 8.96t, three electrodes are set on the top cover of slag hardening and tempering furnace.Adopt two four roller whizzers, the processing flow of every four roller whizzer is 3.5t/h, becomes fine rate 72～80%, total power 55KW.
Blast furnace slag is flowed into the slag hardening and tempering furnace through the sealing ditch of slagging tap, flow through at blast furnace slag simultaneously and seal out in the slag runner process, evenly add yellow ground, blast furnace slag per ton adds about 150 kilograms of acidic excipient yellow ground, flow into the slag hardening and tempering furnace in the lump in company with blast furnace slag, the slag hardening and tempering furnace feeds current flow heats with three electrodes, maintain the temperature at about 1400 ℃, fused mineral wool fibre melt is entered four roller whizzers through the stream material mouth and the movable chute of slag hardening and tempering furnace, produce mineral wool fibre immediately, mineral wool fibre diameter 6≤μ m.
Embodiment 2:
Basically with embodiment 1, just acidic excipient is used silica sand instead, perhaps silica, and perhaps poor iron ore, perhaps their mixture makes acidity quotient reach 1.09～1.20 scopes, and the mineral wool fibre quality of producing is similar to embodiment 1.
Claims (2)
1. method that adopts the blast furnace hot-charging, smelting and producing mineral wool fibre, it is characterized in that blast furnace slag is flowed into the slag hardening and tempering furnace from blast furnace through the sealing ditch of slagging tap, evenly add or do not add acidic excipient or unslaked lime from sealing out slag runner simultaneously, to regulate acidity quotient to 1.09～1.20 of melt, the slag hardening and tempering furnace has heating unit, temperature is at 1300～1450 ℃ in the maintenance slag hardening and tempering furnace, the fusion in the slag hardening and tempering furnace of the acidic excipient of blast furnace slag and adding, be mixed into uniform mineral wool fibre melt, the mineral wool fibre melt is entered whizzer through the stream material mouth and the movable chute of slag hardening and tempering furnace, produce mineral wool fibre, described acidic excipient is a silica sand, sandstone, silica or poor iron ore.
2. the method for operating mine cotton fibre according to claim 1 is characterized in that the heating unit of slag hardening and tempering furnace is the electrode in the insertion of slag hardening and tempering furnace top cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02138196.8A CN1227173C (en) | 2002-09-02 | 2002-09-02 | Method for hot-charging, smelting and producing mineral wool fibre by adopting blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02138196.8A CN1227173C (en) | 2002-09-02 | 2002-09-02 | Method for hot-charging, smelting and producing mineral wool fibre by adopting blast furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1400181A CN1400181A (en) | 2003-03-05 |
| CN1227173C true CN1227173C (en) | 2005-11-16 |
Family
ID=4749345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02138196.8A Expired - Lifetime CN1227173C (en) | 2002-09-02 | 2002-09-02 | Method for hot-charging, smelting and producing mineral wool fibre by adopting blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1227173C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674680A (en) * | 2011-10-10 | 2012-09-19 | 郭永强 | Process for producing high-quality mineral wool by one-step method and equipment used by process for producing high-quality mineral wool by one-step method |
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| CN100429339C (en) * | 2005-05-24 | 2008-10-29 | 灿环科技有限公司 | Method for reproducing fibre by melted waste material |
| CN101704631B (en) * | 2009-11-13 | 2012-06-20 | 北京大学 | Method for manufacturing slag fiber by using thermal-state blast furnace slag |
| CN102010122B (en) * | 2010-12-02 | 2012-12-05 | 长治市华兴环保工程有限公司 | Method for preparing inorganic slag fibers by using iron tailings |
| CN102180593A (en) * | 2010-12-30 | 2011-09-14 | 美国绿色能源发展有限公司 | Method for producing mineral wool from solid waste by using plasma gasification furnace |
| CN102659309B (en) * | 2012-03-27 | 2015-04-01 | 马钢(集团)控股有限公司 | Method for processing mineral wool |
| CN103373810A (en) * | 2012-04-19 | 2013-10-30 | 宝山钢铁股份有限公司 | Process for producing mineral wool from stable high-temperature metallurgical slag |
| CN102745892A (en) * | 2012-06-20 | 2012-10-24 | 河北钢铁股份有限公司承德分公司 | Method for directly producing mineral cotton with hot-melted titanium-containing blast furnace slag |
| CN102826747B (en) * | 2012-08-31 | 2014-08-06 | 朱兴发 | Method used for meeting requirement on mineral wool production with short process |
| CN103922577B (en) * | 2013-01-15 | 2016-04-27 | 宝山钢铁股份有限公司 | Online hot slag directly makes cotton device |
| CN104098264B (en) * | 2013-04-15 | 2017-09-26 | 宝山钢铁股份有限公司 | The releasing device and its linkage path produced for mineral wool |
| CN103555874A (en) * | 2013-10-16 | 2014-02-05 | 山东焦化集团有限公司 | Thermal refining method of blast furnace hot slags |
| CN103588393A (en) * | 2013-10-26 | 2014-02-19 | 芜湖新兴铸管有限责任公司 | Preparation technology for melt for production of mineral wool, rock wool and cast stone products |
| CN103641299B (en) * | 2013-12-06 | 2016-04-06 | 江苏大学 | Alkaline refining slag is for the production of the Slag modification method of slag wool |
| CN104986961A (en) * | 2015-07-21 | 2015-10-21 | 北京蓝昊环保设备有限公司 | Method for tempering high temperature slag and mineral cotton production method |
| CN106045301B (en) * | 2016-05-25 | 2018-10-12 | 安徽工业大学 | A method of producing mineral wool using converter molten state early period slag |
| CN107522406A (en) * | 2016-06-20 | 2017-12-29 | 张家港市华舰五金工具有限公司 | Cotton slag fiber and preparation method thereof |
| CN108178502B (en) * | 2017-12-11 | 2020-10-27 | 鞍钢股份有限公司 | Method for producing mineral wool and molten iron by using low-iron metallurgical waste and blast furnace slag |
| CN108585468A (en) * | 2018-04-04 | 2018-09-28 | 沈阳化工大学 | A method of preparing rock wool by raw material of silicon tailings |
| CN110218827A (en) * | 2019-07-09 | 2019-09-10 | 鞍钢股份有限公司 | A kind of molten blast furnace slag adjusting material and its preparation, application method |
| CN114057403A (en) * | 2021-11-29 | 2022-02-18 | 西安热工研究院有限公司 | Modification and tempering method for slag liquid of double-U-shaped liquid slag discharging boiler |
-
2002
- 2002-09-02 CN CN02138196.8A patent/CN1227173C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674680A (en) * | 2011-10-10 | 2012-09-19 | 郭永强 | Process for producing high-quality mineral wool by one-step method and equipment used by process for producing high-quality mineral wool by one-step method |
| CN102674680B (en) * | 2011-10-10 | 2014-09-24 | 郭永强 | Process for producing high-quality mineral wool by one-step method and equipment used by process for producing high-quality mineral wool by one-step method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1400181A (en) | 2003-03-05 |
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| C14 | Grant of patent or utility model | ||
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| ASS | Succession or assignment of patent right |
Owner name: SUZHOU TIANFENG NEW BUILDING MATERIALS CO., LTD. Free format text: FORMER OWNER: YAN YU Effective date: 20051118 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20051118 Address after: 215011 C, Jinlong building, Binhe Road, No. 205 Binhe Road, Jiangsu, Suzhou, 2F Patentee after: Suzhou Tianfeng new building materials Co.,Ltd. Address before: 214400 No. 58 Shoushan Road, Jiangsu, Jiangyin Patentee before: Yan Yu |
|
| C56 | Change in the name or address of the patentee |
Owner name: SUZHOU BEIXIN MINERAL WOOL BOARD CO., LTD. Free format text: FORMER NAME OR ADDRESS: SUZHOU TIANFENG NEW BUILDING MATERIALS CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: C, Jinlong building, Binhe Road, No. 205, Binhe Road, Jiangsu, Suzhou, 2F Patentee after: BNBM SUZHOU MINERAL FIBER CEILING Co.,Ltd. Address before: C, Jinlong building, Binhe Road, No. 205, Binhe Road, Jiangsu, Suzhou, 2F Patentee before: Suzhou Tianfeng new building materials Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20051116 |
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| CX01 | Expiry of patent term |