CN101293731A - Method for preparing mineral wool by using ferronickel dross sensible heat - Google Patents
Method for preparing mineral wool by using ferronickel dross sensible heat Download PDFInfo
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- CN101293731A CN101293731A CNA2008100116267A CN200810011626A CN101293731A CN 101293731 A CN101293731 A CN 101293731A CN A2008100116267 A CNA2008100116267 A CN A2008100116267A CN 200810011626 A CN200810011626 A CN 200810011626A CN 101293731 A CN101293731 A CN 101293731A
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Abstract
The invention relates to the technical filed of mineral cotton production, which is a method for producing mineral cotton by using the sensible heat of ferronickel slag. The method includes the following steps: laterite-nickel ore is adopted as basic material, and the ferronickel slag with the temperature of 1450 to 1500 DEG C and acidity coefficient being equal to or more than 1.25 is poured into a power thermal insulation furnace with the capacity being 15 tons without adding any fusing agent; the temperature of melts is adjusted and kept within the range of 1350 to 1400 DEG C; then the melts with adjusted temperature are correctly led to a four-roller centrifugal machine by a water-cooling controllable head piece and a diversion trench so as to lead the ferronickel slag to be directly transformed into the mineral cotton fiber with high quality. Electrode materials in the power thermal insulation furnace are metal or carbon.
Description
Technical field
The present invention relates to the Slag Wool Production field, specifically utilize ferronickel dross sensible heat to produce the method for mineral wool.
Background technology
The conventional art of mineral wool melting is is fuel with the coke, be the mineral wool cupola melting technology of main raw material with block blast furnace slag, this also is a kind of mineral wool melting method that still extensively adopts both at home and abroad at present.This melting method does not have to utilize the molten state blast furnace slag direct production mineral wool that has just flowed out blast furnace, but treat to enter the mineral wool cupola melting again after the block slag of blast furnace slag cooling becoming, so this melting mode should belong to multiple second melting process, its employed energy also belongs to the energy of repeat consumption.Simultaneously, the employed coke fuel of mineral wool cupola furnace, also be former coking coal through choosing, wash, join, complex process such as refining and the secondary energy that form, produce one ton of coke and need consume about about 2.7 tons of former coking coal, the selling price per unit of coke is 1～2 times of coal for this reason, but the calorific value of 1 ton of coke only consumes about 57～60% of former coking coal calorific value for producing 1 ton of coke, and the energy conversion efficiency that utilizes former coking coal production to become the coke process is lower.Originally the thermo-efficiency of mineral wool cupola furnace is added and is utilized block cold conditions blast furnace slag and coke to be raw material and fuel, so the mineral wool cupola melting is a kind of waste in the utilization of the energy with regard to very low (25～40%).Though coke occurred not using fully in the beginning of this century, adopt the method for blast furnace hot-charging, smelting and producing mineral wool fibre, make mineral wool melting energy consumption have and significantly reduce (the melting energy consumption than coke mineral wool cupola furnace reduces more than 70%), but this method has a more fatal shortcoming: be exactly that its topmost raw material---pig iron blast furnace slag is a basic slag, its acidity quotient is less than 1.0, become fine requirement in order to satisfy mineral wool to the melt chemical ingredients, must add acidic flux and the alkali blast furnace slag be carried out modified, become in 1.1～1.2 the scope of fine minimum requirements so that the acidity quotient of melt is increased to mineral wool.But facts have proved in recent years, the fusing of flux and homogenizing exist very big difficulty, acidity quotient is the highest in actual production is merely able to reach about 1.05, though this mineral wool can satisfy the minimum requirements of operating mine cotton products, but very unstable aspect water tolerance, fibrous elasticity, fragility, staple length or the like, at the specification of quality that is difficult to stably satisfy mineral wool product qualitatively.For many years, to be to use the block blast furnace slag of cold conditions at all times be main raw material to the mineral wool cupola furnace in the mineral wool production field, and the heat that molten blast furnace slag is discharged in process of cooling (being sensible heat) all has been wasted, and does not always also utilize sensible heat.
Summary of the invention
In order further to excavate the energy-saving potential of industrial dross sensible heat, the energy-conservation height that reaches a renewal that makes the mineral wool melting.The present invention proposes a kind of method of utilizing ferronickel dross sensible heat direct production mineral wool, can either reach to reduce the melting energy consumption significantly, can satisfy the mineral wool product specification of quality fully again.
Technical scheme of the present invention is, utilize ferronickel dross sensible heat to produce the method for mineral wool, the temperature that this method is is basic material with the red soil nickel ore, come out of the stove the nickel-iron smelting stove is 1450～1500 ℃, the ferronickel dross injection capacity of acidity quotient 〉=1.25 is in 15 tons the electric power holding furnace, need not add any flux, with the melt temperature adjustment and remain in 1350～1400 ℃ the scope, then by the controlled head piece of water-cooled and the diversion trench melt after with temperature adjustment, accurately guide to four roller whizzers, make ferronickel dross directly be converted to the high-quality mineral wool fibre.Electrode materials in the described electric power holding furnace is metal or carbon.
Existing mineral wool acidity quotient is low, the unsettled defective of mineral wool physicochemical property at " adopting the method for blast furnace hot-charging, smelting and producing mineral wool fibre ", it is higher to find out a kind of acidity quotient, physicochemical property meets the high-quality mineral wool fully and becomes the fine slag that requires, for this reason, find the ferronickel dross that one of slag that meets above-mentioned requirements forms for the basic material melting with the red soil nickel ore exactly by multiple industrial slag being investigated and tested the back.The acidity quotient of this slag 〉=1.25, no matter slag iron all can fully satisfy the needs that the high-quality mineral wool is produced in quantity or qualitatively than up to more than 3; Because can fully having satisfied mineral wool, ferronickel dross inherent chemical property becomes fine needs, can directly be utilized so need not to add any acidic flux to carry out modified, only need take the insulation measure to get final product to slag, do not need the acidic flux add-on system, so overall structure is simpler than hardening and tempering furnace; Because the tapping temperature of ferronickel dross is up to 1450～1500 ℃ (higher 50～100 ℃ than pig iron blast furnace slag), the sensible heat ratio blast furnace slag that is wherein contained many 3～7%, add that there is not acidic flux fusing heat dissipation in it, so the melting energy consumption of producing mineral wool with ferronickel dross is than the melting energy consumption of producing mineral wool with pig iron slag low more than 16% (hang down more than 80% than mineral wool cupola furnace---see Table 1).
The domestic three kinds of mineral wool melting method technical process contrast of table 1
The subsequent handling of [explanation] three kinds of mineral wool melting method is identical, that is: mineral wool melt → the be centrifuged into fibre → interpolation binding agent → collection cotton → molding semi product → typing → integer that is heating and curing → metering test → finished product warehouse-in.
The invention has the beneficial effects as follows: the present invention can either reach and reduce the melting energy consumption significantly, can satisfy the mineral wool product specification of quality fully again.The present invention does not use coke to be the energy fully, is that employing electric power is the energy.But the energy input link of holding furnace and blast furnace hot-charging, smelting method are distinguished to some extent: blast furnace hot-charging, smelting method hardening and tempering furnace is merely able to use carbonaceous electrodes, and the costing an arm and a leg of this class electrode, work-ing life are low, are unfavorable for the reduction of mineral wool melting cost.For this reason in the present invention, mainly use insert metal electrode (also can use carbon pole), not only price is lower, and work-ing life is longer, helps the reduction of melting cost.
Embodiment
Certain ferroalloy works' ferronickel smelting furnace is during with the Ni-based plinth raw material of laterite refining ferronickel, every day, but the output ferronickel dross was 240～270 tons, it is average that hourly to go out the quantity of slag be 10～11 tons (can satisfy the usage quantitys of more than 20,000 ton of mineral wool production line of two annual outputs simultaneously), tapping temperature is 1450～1500 ℃, slag acidity quotient 〉=1.25, chemical composition stability.The present invention adopts the capacity that is provided with near the ferronickel smelting furnace be 15 tons electric power holding furnace, slag flows directly into holding furnace and is incubated, temperature is 1350～1400 ℃ a ferronickel dross after the process temperature adjustment, go out the flow of holding furnace melt by the controlled melt head piece of water-cooled controlling flow, and the melt-flow thigh is guided to four roller whizzers through diversion trench, realize the fine process of one-tenth of mineral wool.Its mineral wool quality should meet or exceed national standard or advanced international level fully.
Claims (2)
1. utilize ferronickel dross sensible heat to produce the method for mineral wool, it is characterized in that, the temperature that this method is is basic material with the red soil nickel ore, come out of the stove the nickel-iron smelting stove is that 1450～1500 ℃, the ferronickel dross injection capacity of acidity quotient 〉=1.25 are in 15 tons the electric power holding furnace, need not add any flux, with the melt temperature adjustment and remain in 1350～1400 ℃ the scope, then by the controlled head piece of water-cooled and the diversion trench melt after with temperature adjustment, accurately guide to four roller whizzers, make ferronickel dross directly be converted to the high-quality mineral wool fibre.
2, the method for utilizing ferronickel dross sensible heat to produce mineral wool according to claim 1 is characterized in that, the electrode materials in the described electric power holding furnace is metal or carbon element.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100116267A CN101293731A (en) | 2008-05-27 | 2008-05-27 | Method for preparing mineral wool by using ferronickel dross sensible heat |
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| CNA2008100116267A CN101293731A (en) | 2008-05-27 | 2008-05-27 | Method for preparing mineral wool by using ferronickel dross sensible heat |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102161567A (en) * | 2011-03-04 | 2011-08-24 | 山东鑫海科技股份有限公司 | Method for smelting nickel alloy by utilizing ore-smelting electric furnace and producing mineral wool fiber by melting waste residues and utilizing sensible heat |
| CN102627397A (en) * | 2012-04-17 | 2012-08-08 | 山东鑫海科技股份有限公司 | Method for producing magnesium silicate fiber blanket by smelting residual fusion slag of ferronickel through utilizing laterite-nickel ore |
| CN103043895A (en) * | 2012-07-13 | 2013-04-17 | 中国恩菲工程技术有限公司 | Method for preparing mineral wool |
| CN103253881A (en) * | 2013-05-20 | 2013-08-21 | 刘苏芳 | Method for producing ceramics and other building materials by utilizing nickel ore furnace slag |
| CN104370454A (en) * | 2014-08-14 | 2015-02-25 | 宝钢矿棉科技（宁波）有限公司 | Centrifugal cotton manufacturing system for mineral cotton production |
| CN104726711A (en) * | 2014-06-03 | 2015-06-24 | 山东炜烨节能新材料有限公司 | Technique for coproducing nickel pig iron and rock wool product from lateritic nickel ores |
| CN108996913A (en) * | 2018-09-03 | 2018-12-14 | 中南大学 | One kind is directly produced in mineral wool in ferronickel slag containing Mn oxide and is applied |
| CN110407476A (en) * | 2019-07-05 | 2019-11-05 | 青岛德能和无机新材料科技有限公司 | A kind of rock/mineral wool product and preparation method thereof |
| CN110451792A (en) * | 2019-08-27 | 2019-11-15 | 中南大学 | A method of mineral wool is produced using silicomanganese and dilval melting waste slag |
| CN111410431A (en) * | 2020-04-24 | 2020-07-14 | 北京中冶设备研究设计总院有限公司 | Method for directly preparing mineral wool with high acidity coefficient from ferronickel slag |
| CN112322903A (en) * | 2020-10-26 | 2021-02-05 | 西安建筑科技大学 | Method for reducing magnesium oxide in nickel-iron slag and method for preparing mineral wool |
-
2008
- 2008-05-27 CN CNA2008100116267A patent/CN101293731A/en active Pending
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102161567B (en) * | 2011-03-04 | 2012-12-26 | 山东鑫海科技股份有限公司 | Method for smelting nickel alloy by utilizing ore-smelting electric furnace and producing mineral wool fiber by melting waste residues and utilizing sensible heat |
| CN102161567A (en) * | 2011-03-04 | 2011-08-24 | 山东鑫海科技股份有限公司 | Method for smelting nickel alloy by utilizing ore-smelting electric furnace and producing mineral wool fiber by melting waste residues and utilizing sensible heat |
| CN102627397A (en) * | 2012-04-17 | 2012-08-08 | 山东鑫海科技股份有限公司 | Method for producing magnesium silicate fiber blanket by smelting residual fusion slag of ferronickel through utilizing laterite-nickel ore |
| CN102627397B (en) * | 2012-04-17 | 2014-09-03 | 山东鑫海科技股份有限公司 | Method for producing magnesium silicate fiber blanket by smelting residual fusion slag of ferronickel through utilizing laterite-nickel ore |
| CN103043896B (en) * | 2012-07-13 | 2015-04-01 | 中国恩菲工程技术有限公司 | Method for preparing mineral wool |
| CN103043895A (en) * | 2012-07-13 | 2013-04-17 | 中国恩菲工程技术有限公司 | Method for preparing mineral wool |
| CN103043896A (en) * | 2012-07-13 | 2013-04-17 | 中国恩菲工程技术有限公司 | Method for preparing mineral wool |
| CN103043895B (en) * | 2012-07-13 | 2015-03-18 | 中国恩菲工程技术有限公司 | Method for preparing mineral wool |
| CN103253881A (en) * | 2013-05-20 | 2013-08-21 | 刘苏芳 | Method for producing ceramics and other building materials by utilizing nickel ore furnace slag |
| CN104726711A (en) * | 2014-06-03 | 2015-06-24 | 山东炜烨节能新材料有限公司 | Technique for coproducing nickel pig iron and rock wool product from lateritic nickel ores |
| WO2015184695A1 (en) * | 2014-06-03 | 2015-12-10 | 山东炜烨节能新材料有限公司 | Process for co-production of nickel pig iron and rock wool products by using laterite-nickel ore |
| CN104370454A (en) * | 2014-08-14 | 2015-02-25 | 宝钢矿棉科技（宁波）有限公司 | Centrifugal cotton manufacturing system for mineral cotton production |
| CN108996913A (en) * | 2018-09-03 | 2018-12-14 | 中南大学 | One kind is directly produced in mineral wool in ferronickel slag containing Mn oxide and is applied |
| CN110407476A (en) * | 2019-07-05 | 2019-11-05 | 青岛德能和无机新材料科技有限公司 | A kind of rock/mineral wool product and preparation method thereof |
| CN110407476B (en) * | 2019-07-05 | 2023-05-23 | 青岛青力环保设备有限公司 | Rock/mineral wool product and preparation method thereof |
| CN110451792A (en) * | 2019-08-27 | 2019-11-15 | 中南大学 | A method of mineral wool is produced using silicomanganese and dilval melting waste slag |
| CN110451792B (en) * | 2019-08-27 | 2021-09-07 | 中南大学 | Method for producing mineral wool by using silicomanganese and nickel-iron alloy smelting waste residues |
| CN111410431A (en) * | 2020-04-24 | 2020-07-14 | 北京中冶设备研究设计总院有限公司 | Method for directly preparing mineral wool with high acidity coefficient from ferronickel slag |
| CN112322903A (en) * | 2020-10-26 | 2021-02-05 | 西安建筑科技大学 | Method for reducing magnesium oxide in nickel-iron slag and method for preparing mineral wool |
| CN112322903B (en) * | 2020-10-26 | 2022-07-19 | 西安建筑科技大学 | Method for reducing magnesium oxide in nickel-iron slag and method for preparing mineral wool |
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Open date: 20081029 |