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WO2001068542A1 - Fibre de roche obtenue a partir de residus liquides contenus dans le machefer des chaudieres et procede de fabrication de produits a base de cette fibre - Google Patents

Fibre de roche obtenue a partir de residus liquides contenus dans le machefer des chaudieres et procede de fabrication de produits a base de cette fibre Download PDF

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Publication number
WO2001068542A1
WO2001068542A1 PCT/CN2001/000319 CN0100319W WO0168542A1 WO 2001068542 A1 WO2001068542 A1 WO 2001068542A1 CN 0100319 W CN0100319 W CN 0100319W WO 0168542 A1 WO0168542 A1 WO 0168542A1
Authority
WO
WIPO (PCT)
Prior art keywords
rock wool
coal
slag
liquid
additive
Prior art date
Application number
PCT/CN2001/000319
Other languages
English (en)
Chinese (zh)
Inventor
Shanmao Zhao
Zhao Zhang
Dazhuang Xiao
Original Assignee
Shanmao Zhao
Zhao Zhang
Dazhuang Xiao
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from CN00103206A external-priority patent/CN1132794C/zh
Priority claimed from CNB001073338A external-priority patent/CN1155465C/zh
Application filed by Shanmao Zhao, Zhao Zhang, Dazhuang Xiao filed Critical Shanmao Zhao
Priority to AU2001246342A priority Critical patent/AU2001246342A1/en
Publication of WO2001068542A1 publication Critical patent/WO2001068542A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C13/00—Fibre or filament compositions
    • C03C13/06—Mineral fibres, e.g. slag wool, mineral wool, rock wool
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/04—Manufacture of glass fibres or filaments by using centrifugal force, e.g. spinning through radial orifices; Construction of the spinner cups therefor
    • C03B37/05—Manufacture of glass fibres or filaments by using centrifugal force, e.g. spinning through radial orifices; Construction of the spinner cups therefor by projecting molten glass on a rotating body having no radial orifices
    • C03B37/055—Manufacture of glass fibres or filaments by using centrifugal force, e.g. spinning through radial orifices; Construction of the spinner cups therefor by projecting molten glass on a rotating body having no radial orifices by projecting onto and spinning off the outer surface of the rotating body
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
    • C03C1/002—Use of waste materials, e.g. slags

Definitions

  • the invention relates to a comprehensive utilization method of coal ash slag, in particular to a method for preparing rock wool fibers and rock wool fiber products from coal ash slag in a liquid slag discharge boiler.
  • the acidity coefficient (Al 2 O 3 + SiO 2 ) I (CaO + MgO) is more than 1.25, and limestone is used as a flux; the liquid slag of the cyclone furnace is directly blown into rock wool with compressed air.
  • the disadvantages of this method are the high energy consumption and high cost of compressed air blowing. It is an important aspect of comprehensive utilization of coal ash residue to further make rock wool fibers into artificial wood and other construction boards with high strength and low cost. However, there is no good method in the prior art. Summary of invention
  • An object of the present invention is to provide a method for preparing rock wool fibers from coal ash slag in a liquid slagging boiler, including the following steps:
  • step b The liquid glass slurry obtained in step a is sent to a centrifuge to be blown away, and high-speed wind is blown at the same time to produce rock wool fibers.
  • Another object of the present invention is to further provide a method for preparing a rock wool fiber product from coal ash slag of a liquid slag discharge boiler, including the following steps ⁇ a. Add the additive mainly including limestone and coal into the boiler for combustion at the same time to vitrify the coal ash slag to obtain a liquid glass slurry;
  • step b The liquid glass slurry obtained in step a is sent to a centrifuge and blown away, and high-speed wind is blown at the same time to produce rock wool fibers.
  • step b compressing the rock wool fibers obtained in step b into rock wool tyres
  • step d pressing the rock wool cotton tire obtained in step c into the required rock wool fiberboard tire according to the requirements of different products;
  • step d The rock wool fiber board tire obtained in step d is cured and processed into finished rock wool fiber products. Detailed description of the invention
  • the method for preparing rock wool fibers from coal ash slag in a liquid slag discharge boiler includes the following steps:
  • the liquid glass frit obtained in step a is sent to a centrifuge to be blown away, and high-speed wind is blown at the same time to produce rock wool fibers.
  • the additive described in step a further includes two or more kinds of ores selected from the group consisting of: serpentine, forsterite, gypsum, quartz sand, silica, dolomite, magnesite, zinc ore, copper ore , Manganese ore, molybdenum concentrate, etc.
  • the amount of the additive is added so that each component of the liquid glass slurry after vitrified coal ash slag satisfies the following conditions at the same time (the weight percentage is based on the glass slurry of 100):
  • Si ⁇ ⁇ ⁇ ⁇ 1 are oxygen, silicon, phosphorus, aluminum atoms;
  • Q DW represents the low-level heating value of the base coal received by the liquid slagging boiler (KJ / Kg coal);
  • Q represents the minimum allowable heating value (KJ / Kg mixed powder) of coal powder, additive powder, and remelted fly ash mixed powder carried into the boiler by primary air;
  • ⁇ is the combustion safety factor, generally 1.05-1.3;
  • ⁇ represents the remelted fly ash rate of the liquid slagging boiler
  • Aar represents the base ash content of coal (%)
  • a z represents the ash burning loss (%) at 1600 ° C
  • step b The temperature of the liquid glass slurry in step b is 1500-170 ° C, and the viscosity ⁇ at 1500 ° C is 3-5 poise. If the above conditions of temperature and viscosity are not achieved, step b may further include The slurry is heated and tempered before the slurry enters the centrifuge, and the liquid glass slurry is heated to meet the above conditions. For rock wool fibers that require a binder, the high-speed wind in step b can be used as required. To spray mist glue. The linear speed of the centrifuge in step b is 40-150 m / s, and the speed of the high-speed wind is 30-250 m / s.
  • the liquid glass slurry is scattered into ultra-fine liquid columns or ultra-thin liquid films by the centrifugal force.
  • Rock wool fibers are further blown by high-speed wind.
  • the method for preparing rock wool fiber products from coal ash slag in a liquid slagging boiler according to the present invention includes the following steps:
  • step b The liquid glass slurry obtained in step a is sent to a centrifuge and blown away, and high-speed wind is blown at the same time to produce rock wool fibers;
  • step b compressing the rock wool fibers obtained in step b into rock wool tyres
  • step d pressing the rock wool cotton tire obtained in step c into the required rock wool fiberboard tire according to the requirements of different products;
  • the rock wool fiber board tire obtained in step d is cured and processed into finished rock wool fiber products.
  • the additive described in step a further includes two or more kinds of ores selected from the group consisting of: serpentine, forsterite, phosphogypsum, quartz sand, silica, dolomite, magnesite, zinc ore, copper ore , Manganese ore, molybdenum concentrate, etc.
  • the amount of the additive is added so that each component of the liquid glass slurry after vitrified coal ash slag satisfies the following conditions at the same time (the weight percentage is based on the glass slurry of 100):
  • N Sl , ⁇ P , ⁇ ⁇ are the atomic numbers of oxygen, silicon, phosphorus, and aluminum, respectively;
  • Is the amount of each component in the additive J l, 2, 3, 4, 5,..., J, (Kg / T coal);
  • Q DW means the low-level heating value of the base coal received by the liquid slagging boiler (KJ / Kg coal) ;
  • Q represents the minimum allowable heating value (KJ / Kg mixed powder) of coal powder, additive powder, and remelted fly ash mixed powder brought into the boiler by primary air;
  • ⁇ is the combustion safety factor, generally 1.05-1.3;
  • ⁇ represents the remelted fly ash rate of the liquid slagging boiler
  • Aar represents the base ash content of coal (%)
  • a z represents 160CTC ash burning loss (%)
  • step b The temperature of the liquid glass slurry in step b is 1500-1700 ° C, and the viscosity ⁇ at 1500 is 3-5 poises. If the above conditions of temperature and viscosity are not achieved, step b may further include the steps of heating and quenching the liquid glass slurry before entering the centrifuge, and heating the liquid glass slurry to meet the above conditions. For rock wool fibers to which a binder needs to be added, a mist-like glue solution may be sprayed into the high-speed wind of step b as required.
  • the linear speed of the centrifuge in step b is 40-150 m / s, and the speed of the high-speed wind is 30-250 m / s.
  • the liquid glass slurry is scattered into ultra-fine liquid columns or ultra-thin liquid films by the centrifugal force.
  • Rock wool fibers are further blown by high-speed wind.
  • the rock wool fiber in step c is settled in the sedimentation chamber, and is pressed into the rock wool tire by the outer pressure roller on the upper part of the air-permeable transport belt.
  • the settling chamber is preferably under negative pressure wind so that the rock wool fibers settle on the conveyor belt more quickly.
  • the thickness of the rock wool fiber board tire in step d is 5-150 mm and the density is 80-1500 kg / m.
  • the curing temperature of step e is 150-350 ° C, the curing time is 5-30 minutes, and the rock wool fiber product is obtained after curing.
  • Rock wool fiber products include various gypsum boards, insulation boards, wall boards, artificial wood, etc. Brief description of the drawings
  • FIG. 1 is a schematic flowchart of a method for preparing rock wool fibers and rock wool fiber products (including gypsum boards, insulation boards, wall boards, and artificial wood) from coal ash slag of a liquid slagging boiler according to the present invention. Best Mode of the Invention
  • the additive phosphogypsum, serpentine, limestone, quartz sand, dolomite, magnesite or other ore selected according to the requirements of ash slag vitrified rock wool fiber are prepared at the boiler batching plant 1 according to the formula. After the coal-forming material mixture, it is ground into powder and sent to the boiler 2 for combustion to produce a molten glass slurry. This glass slurry enters the boiler water-quenching and granulating tank 5 when the rock wool is not produced. Into glass pellets.
  • No cotton-forming droplets enter the rock wool slag pelletizing tank 10 during the blowing process and are water-quenched into glass pellets.
  • the rock wool fiber and the cotton blowing wind are separated in the rock wool fiber sedimentation chamber 9, and the negative air blower 1 1 sends the cotton blowing wind separated from the rock wool fibers to the cotton blowing wind purifying device 12, in which the lint and fine slag beads are removed.
  • the cotton blowing wind purifying device 12 After the rubber mist, it enters the cooler 20, and uses a cotton blowing wind of 30 ⁇ 70 ° C to cool the rock wool fiber products of 200 ⁇ 350 ° C sent from the curing section 18 to below 100 ° C, and recovers the heat energy to the cotton blowing wind.
  • the cotton wool fiber product obtained by blowing cotton wind at the same time was filtered and purified again.
  • the cotton blowing wind also needs to be filtered.
  • the cotton blowing wind recovery fan 13 raises the pressure and recovers it as the combustion combustion air source for boiler combustion. 3 in the figure is the high temperature of the boiler.
  • Air preheater, 4 is the boiler low temperature air preheater.
  • the rock wool fibers are separated from the cotton wool fiber sedimentation chamber 9 and the cotton blowing wind, and then pressed by the outer pressure of the upper part of the air-permeable transport belt to roll into rubber-free cotton tires and sent to the rock wool cotton tire transition section 14, It is then fed to a baler or board section 15 of a reinforced gypsum board production line to make a reinforced gypsum board.
  • Reinforced gypsum board solidifies at room temperature. After reaching a certain strength, it enters the cutting section 16 of the reinforced gypsum board production line.
  • the glue pump 17 is started to spray the glue liquid into the blowing wind, so that the glass slurry is blown into the rock wool fibers and the glue liquid is sprayed onto the fiber surface.
  • the rubber-containing rock wool fibers are separated from the cotton wool fiber sedimentation chamber 9 and the cotton blowing wind, and then are pressed into a rubber-containing cotton tire by an outer pressure roller on the upper part of the ventilation belt.
  • the rubber content in cotton tires is related to the rock wool fiber products, among which the insulation board contains about 3% of rubber; the insulation pipes and decorative boards are about 4 ⁇ 6%; artificial wood, furniture, doors and windows are about 6 ⁇ 10% or even higher, as needed It depends.
  • the rubber wool-containing tire insulation board is made, it is sent to the rock wool insulation tire transition section 14 and then sent to the rock wool insulation board production line into the plate curing section 18, where the rubber wool tire is further compressed to the required thickness (about 30 ⁇ 150 mm) and the required density (about 80 ⁇ 120 kg / M 3 ), and it is heated to 150 ⁇ 350 ° C by hot air for high temperature curing.
  • the curing time is 12 minutes.
  • the hot air comes from the boiler air preheater 4.
  • the curing hot air fan 19 sends it back to the boiler for combustion air.
  • the cured insulation board is sent to the cooling section 20 of the rock wool insulation board production line. The temperature is reduced by the cotton blowing wind. Below 10 (TC), it is sent to the cutting section 21 of the rock wool insulation board production line. After cutting, it can be packed into a packer to be a commodity, or it can be entered into the core board section 26 of the light body wall board production line. When manufacturing artificial wood, it is high in rubber.
  • the cotton tire is sent from the rock wool cotton tire transition section 14 to the artificial wood board production line into the board curing section 22, where it is pressed into decorative boards or high-density boards with a thickness of 5-20 mm and a density of 300-1500 kg / m3.
  • Hot air, steam baking, or electric heating is used for heating and curing.
  • the finished product enters the cooling section 23 of the artificial wood board production line, cools below 100 ⁇ , and then enters the cutting section 24 of the artificial wood board production line. After cutting, it can enter the baler or be used as Raw materials for light-weight wallboard production line.
  • the production line produces low-density boards, it can replace reinforced gypsum boards as interior wallboards after veneering.
  • the production line produces high-density boards, it can be used in After the surface is waterproofed, it enters the outer wall panel section 27 of the light wall panel production line.
  • the main components of the light wall panel namely the inner and outer wall panels and the core board, are in place and sent to the light wall panel raw line finished product section. 28. It can be packed into products after processing such as fastening and decoration.
  • Lightweight energy-saving wall panels and external wall panels sometimes require metal plates, so a metal exterior wall panel production line is also set up, which includes the forming section of the metal exterior wall panel production line 29.
  • the dried metal wall board enters the light wall panel production line outer wall panel section 27, and is made into a light body energy-saving wall board with a metal outer wall board.
  • the rubber-containing cotton tire can be directly made Furniture, doors and windows and other artificial wood products, rubber-free cotton tires can also be made into cotton felt, etc.
  • rock wool fiber production line with gypsum board, insulation board, artificial wood board.
  • Example of a finished product line because there are many boilers in a power plant, and one boiler has multiple slag discharge outlets, there are usually multiple rock wool fiber production lines, often one rock wool fiber production line and one rock wool fiber product production line.
  • the thermal energy is used in the entire production process, and rubber-wool tires are used in the manufacturing of rock wool fiber products for doors, windows, bookcases, and desktops.
  • the rubber tires are pressed and solidified on a special tire membrane at one time to reduce costs and make the products competitive in the market;
  • Rock wool fiber and rock wool fiber products have excellent properties such as moisture resistance, corrosion resistance, flame resistance, and will not be deformed by moisture, cracked by drought, moth-eaten or rotted. Furniture, flooring, doors and windows, insulation boards, wall boards made of And decorative boards are durable, not afraid of fire;
  • the rock wool fiber products are cured at high temperature and do not use paint, it will not cause pollution or poisoning of harmful substances in paint.
  • the present invention has greater social and economic benefits.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Glass Compositions (AREA)

Abstract

L'invention concerne une fibre de roche obtenue à partir de résidus liquides contenus dans le mâchefer des chaudières et un procédé de fabrication de produits à base de cette fibre. On prévoit essentiellement l'apport d'additifs à base de phosphogypse et de charbon servant à alimenter la combustion de la chaudière pour procéder à la vitrification du mâchefer permettant d'obtenir un lait de verre solide qui est introduit dans une centrifugeuse et soufflé à une vitesse élevée de manière à obtenir des fibres de roche. Après un premier laminage, ces dernières sont transformées en peptides qui subissent un second laminage. On obtient alors des fibres de roche laminées qui sont finalement solidifiées. Les avantages de cette invention découlent de l'utilisation que l'on fait du mâchefer et de l'économie de grandes quantités de bois naturel. De plus, par le biais de cette invention on résout le problème lié à l'espace utilisé pour le stockage du mâchefer des chaudières et on assure une combustion sans décharge de mâchefer.
PCT/CN2001/000319 2000-03-16 2001-03-16 Fibre de roche obtenue a partir de residus liquides contenus dans le machefer des chaudieres et procede de fabrication de produits a base de cette fibre WO2001068542A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001246342A AU2001246342A1 (en) 2000-03-16 2001-03-16 Process for manufacturing rock wool fibers and its products from the slag of liquid residual slag boilers

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN00103206.2 2000-03-16
CN00103206A CN1132794C (zh) 2000-03-16 2000-03-16 一种由液态排渣锅炉灰渣直接转换成岩棉的方法
CN00107333.8 2000-05-16
CNB001073338A CN1155465C (zh) 2000-05-16 2000-05-16 一种人造木材的制造方法

Publications (1)

Publication Number Publication Date
WO2001068542A1 true WO2001068542A1 (fr) 2001-09-20

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PCT/CN2001/000319 WO2001068542A1 (fr) 2000-03-16 2001-03-16 Fibre de roche obtenue a partir de residus liquides contenus dans le machefer des chaudieres et procede de fabrication de produits a base de cette fibre

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AU (1) AU2001246342A1 (fr)
WO (1) WO2001068542A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106222878A (zh) * 2016-07-13 2016-12-14 山西鑫汉宇环保科技有限公司 一种利用高碱度炉渣生产矿渣棉的方法
CN106637663A (zh) * 2016-12-09 2017-05-10 新疆展鑫防火保温材料有限公司 以固体废弃物为原料的岩棉及其制备方法和应用
CN110143770A (zh) * 2019-05-14 2019-08-20 东南大学 一种现排炉渣三元复合无机胶凝材料的制备方法
CN113072305A (zh) * 2021-04-20 2021-07-06 洛阳昊海环保科技有限公司 一种制备矿渣棉的方法及其生产过程中废物的利用方法
CN114538785A (zh) * 2022-04-02 2022-05-27 郑州大学 一种磷石膏高温熔融制备矿物棉的方法及矿物棉
CN115140943A (zh) * 2022-06-30 2022-10-04 北京中环鑫汇科技有限公司 一种利用钢铁厂固废生产岩棉的方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1004278A1 (ru) * 1981-05-28 1983-03-15 Всесоюзный Научно-Исследовательский И Проектный Институт "Теплопроект" Способ получени минеральной ваты
CN86101084A (zh) * 1986-01-31 1987-08-19 天津市建筑材料科学研究所 利用液态旋风炉渣制棉的工艺方法
CN87102124A (zh) * 1987-03-25 1988-10-12 湖北省化学研究所 旋风炉液态渣直接制矿棉

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1004278A1 (ru) * 1981-05-28 1983-03-15 Всесоюзный Научно-Исследовательский И Проектный Институт "Теплопроект" Способ получени минеральной ваты
CN86101084A (zh) * 1986-01-31 1987-08-19 天津市建筑材料科学研究所 利用液态旋风炉渣制棉的工艺方法
CN87102124A (zh) * 1987-03-25 1988-10-12 湖北省化学研究所 旋风炉液态渣直接制矿棉

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106222878A (zh) * 2016-07-13 2016-12-14 山西鑫汉宇环保科技有限公司 一种利用高碱度炉渣生产矿渣棉的方法
CN106637663A (zh) * 2016-12-09 2017-05-10 新疆展鑫防火保温材料有限公司 以固体废弃物为原料的岩棉及其制备方法和应用
CN106637663B (zh) * 2016-12-09 2019-04-16 新疆展鑫防火保温材料有限公司 以固体废弃物为原料的岩棉及其制备方法和应用
CN110143770A (zh) * 2019-05-14 2019-08-20 东南大学 一种现排炉渣三元复合无机胶凝材料的制备方法
CN110143770B (zh) * 2019-05-14 2021-06-01 东南大学 一种现排炉渣三元复合无机胶凝材料的制备方法
CN113072305A (zh) * 2021-04-20 2021-07-06 洛阳昊海环保科技有限公司 一种制备矿渣棉的方法及其生产过程中废物的利用方法
CN113072305B (zh) * 2021-04-20 2023-01-31 洛阳昊海环保科技有限公司 一种制备矿渣棉的方法及其生产过程中废物的利用方法
CN114538785A (zh) * 2022-04-02 2022-05-27 郑州大学 一种磷石膏高温熔融制备矿物棉的方法及矿物棉
CN115140943A (zh) * 2022-06-30 2022-10-04 北京中环鑫汇科技有限公司 一种利用钢铁厂固废生产岩棉的方法
CN115140943B (zh) * 2022-06-30 2023-09-19 北京中环鑫汇科技有限公司 一种利用钢铁厂固废生产岩棉的方法

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