WO2023139784A1 - ロックウールの製造設備および製造方法 - Google Patents

ロックウールの製造設備および製造方法 Download PDF

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Publication number
WO2023139784A1
WO2023139784A1 PCT/JP2022/002414 JP2022002414W WO2023139784A1 WO 2023139784 A1 WO2023139784 A1 WO 2023139784A1 JP 2022002414 W JP2022002414 W JP 2022002414W WO 2023139784 A1 WO2023139784 A1 WO 2023139784A1
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WO
WIPO (PCT)
Prior art keywords
electric furnace
raw material
component
molten
composition
Prior art date
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.)
Ceased
Application number
PCT/JP2022/002414
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English (en)
French (fr)
Japanese (ja)
Inventor
大輔 福永
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
JFE Rockfiber Corp
Original Assignee
JFE Steel Corp
JFE Rockfiber Corp
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
Application filed by JFE Steel Corp, JFE Rockfiber Corp filed Critical JFE Steel Corp
Priority to CN202280089537.2A priority Critical patent/CN118574793A/zh
Priority to PCT/JP2022/002414 priority patent/WO2023139784A1/ja
Priority to JP2023575025A priority patent/JP7720416B2/ja
Publication of WO2023139784A1 publication Critical patent/WO2023139784A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • C03B37/07—Controlling or regulating

Definitions

  • the present invention relates to a rock wool production facility and a production method, and more specifically to a technique for continuously producing rock wool while adjusting the components.
  • Patent Document 3 discloses a technique for arranging two electric furnaces in series, heating and component adjustment of blast furnace molten slag in the primary electric furnace, and then adjusting the temperature in the secondary electric furnace to produce rock wool, and stabilizing the SiO 2 concentration by determining the gas flow rate for gas bubbling in the primary electric furnace based on the information on the weight and composition of the supplied molten slag.
  • Patent Document 3 the supply of molten metal from the primary electric furnace to the secondary electric furnace is batchwise, and the molten slag capacity of the secondary electric furnace fluctuates, and the static pressure changes make it impossible to stabilize the supply amount from the secondary electric furnace. Fluctuations in the amount of molten metal supplied from the secondary electric furnace to the cotton-making machine may cause fluctuations in the density of rock wool, which may reduce productivity and yield.
  • the control means acquires the component composition of the main raw material, the component composition of the component adjusting material, the component composition and dissolution rate of the molten metal surface coating material in the primary electric furnace and the secondary electric furnace, and the cotton manufacturing efficiency and yield of rock wool, and is configured so that the component composition of the molten raw material supplied from the secondary electric furnace becomes a desired component composition.
  • the rock cool manufacturing equipment is (a) the component whose composition is to be adjusted in the primary electric furnace is one or more components selected from SiO 2 , CaO, Al 2 O 3 and MgO; (a) the control means is configured to correct the target composition of the target component based on the composition of components other than the target component in the component composition of the main raw material; (c) the main raw material is one or more selected from molten blast furnace slag, solidified blast furnace slag and basalt; etc. is considered to be a preferable solution.
  • the method of manufacturing rock wool according to the present invention includes a first heating step of supplying the main raw material to a primary electric furnace, adding a molten metal surface coating material, heating, adding a component adjustment material to obtain a molten raw material having a predetermined composition, a second heating step of continuously supplying the molten raw material from the primary electric furnace to the secondary electric furnace, charging the molten metal surface coating material into the secondary electric furnace, and keeping it warm, continuously supplying the molten raw material from the secondary electric furnace to a cotton manufacturing machine, A fiberization step of fiberizing the molten raw material, and a component adjustment step of obtaining the component composition of the main raw material, the component composition of the component adjusting material, the component composition and dissolution rate of the molten metal surface coating material in the primary electric furnace and the secondary electric furnace, and the cotton manufacturing efficiency and yield of rock wool, and controlling the addition rate of the component adjusting material added to the primary electric furnace so that the component composition of the molten raw material supplied from the
  • the electric furnaces are connected in series to heat the molten raw material, and the molten raw material is controlled to have a desired temperature and component composition, and continuously supplied to the cotton manufacturing machine. Therefore, rock wool with stable productivity and quality can be produced.
  • the quality of rock wool can be further improved by adjusting SiO 2 and CaO in the primary electric furnace to compensate for the influence of other components.
  • FIG. 1 is a conceptual diagram of a rock wool manufacturing facility 100 according to this embodiment.
  • FIG. 2 is a conceptual diagram showing the upper surface of the electric furnace.
  • FIG. 2(a) represents a top view of the primary electric furnace
  • FIG. 2(b) represents a top view of the secondary electric furnace.
  • the blast furnace slag 1 as the main raw material is transported in a molten state from the blast furnace to the rock wool production facility 100 by freight car or the like.
  • the gas bubbling lance 2d is inserted almost vertically from the central portion of the electric furnace lid 2b covering the primary electric furnace 2, that is, the lance insertion port provided corresponding to the central position of the three electrodes 2a, and the lower portion is immersed in the molten raw material 1b in the primary electric furnace 2.
  • an inert gas is supplied to a gas bubbling lance and blown into the molten raw material to form a gas bubbling region in the center of the furnace (first heating step).
  • the lower part of the auxiliary raw material cutting device 3a for cutting out the component adjusting material as the auxiliary raw material 3 is inserted into the lance insertion port, and the component adjusting material 3 such as silica stone or silica sand is continuously cut out in the gas bubbling area (first heating step).
  • the auxiliary material 3 is preferably pulverized to about 1000 ⁇ m or less.
  • a cutting speed (addition speed) V3 of the auxiliary raw material 3 is controlled by the control device 20 based on various operating conditions.
  • the cut component adjusting material 3 is charged into the molten raw material 1b exposed as a bare metal surface by the stirring action of the molten raw material 1b in the gas bubbling region, thereby promoting its melting.
  • the lower part of the auxiliary raw material cutting device 3a may be configured so as to perform charging over the entire circumference of the gas bubbling lance. In this embodiment, it is preferable to supply the amount of gas necessary for dissolving the added ingredient adjusting material 3 without leaving any undissolved residue from the gas bubbling lance.
  • the cotton manufacturing efficiency U can be calculated, for example, from the amount of binder used. Further, when the product processing process manufactures granular cotton, the cotton manufacturing efficiency U can be calculated, for example, from the production time of a product of a predetermined weight or volume. Moreover, the product yield r can be determined in consideration of whether or not unfiberized raw materials and unprocessed fibers are to be recovered in an upstream process. The obtained cotton-making efficiency U and yield r are input or transmitted to the control device 20 and used to calculate the supply speed V2 of the molten raw material 1b from the secondary electric furnace 4 to the cotton-making machine 5 .
  • the control means for controlling the addition speed of the component adjustment material added to the primary electric furnace includes the control device 20 and the auxiliary raw material cutting device 3a.
  • the secondary raw material cutting device 3 a is capable of cutting out a fixed amount, and the amount of the secondary raw material 3 to be cut is controlled by a signal from the control device 20 .
  • the communication unit includes a LAN (Local Area Network) adapter, modem, wireless communication device, etc., and controls transmission and reception with each device connected to the communication network.
  • the communication unit may include, for example, a communication interface such as a network card.
  • the communication unit can transmit and receive various data to and from an external device.
  • the control device 20 obtains the component compositions of the main raw material 1, the component adjusting material 3 and the surface coating material.
  • the control device 20 can store in advance the component composition for each brand of the component adjusting material 3 and the surface covering material.
  • the control device 20 acquires the cotton manufacturing efficiency U and the yield r of various rock wool products from the product processing process PD.
  • the control device 20 calculates the supply speed V2 of the molten raw material 1b from the secondary electric furnace 4 to the cotton manufacturing machine 5, for example, using the following formula (1).
  • C1M is the content of the target component M in the main raw material 1
  • C3M is the content of the target component M in the component adjustment material 3
  • CSM is the content of the target component M in the surface coating material put into the primary electric furnace 2 and the secondary electric furnace 4
  • C2M is the content of the target component M in the molten raw material supplied from the secondary electric furnace 4 to the cotton manufacturing machine 5
  • CNM is the correction amount of the target component M by the component N other than the target component M in the main raw material 1.
  • C1M, C3M, CSM and C2M are real numbers ranging from 0 to 1
  • CNM is real numbers ranging from -1 to 1.
  • C1M ⁇ V0+C3M ⁇ V3+CSM ⁇ VS (C2M+CNM) ⁇ V2 (2)
  • V0+V3+VS V2 (3)
  • Example 1 Using the rock wool production equipment shown in the above embodiment, blast furnace slag with a SiO 2 content C1M of 36.0% by mass and an MgO content of 5.0% by mass is used as the main raw material 1, and the composition adjusting material 3 and the surface coating material are silica sand with a SiO 2 content CSM of 99% by mass.
  • Rock wool was produced.
  • the molten raw material capacity W1 of the primary electric furnace 2 was controlled to be approximately 40 tons
  • the molten raw material capacity W2 of the secondary electric furnace 4 was controlled to be 20 tons.
  • Two cotton manufacturing machines 5 are used to supply the molten raw material from the secondary electric furnace 4. One machine is sent to the process PA for forming into a plate shape, and the other machine is sent to the process PB for making granulated cotton.
  • the rock wool production equipment and production method according to the present invention arranges two electric furnaces in series and adjusts the ingredient adjustment material added to the primary electric furnace based on the operating conditions, so that high-quality rock wool can be produced without reducing productivity, which is industrially useful.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Compositions (AREA)
PCT/JP2022/002414 2022-01-24 2022-01-24 ロックウールの製造設備および製造方法 Ceased WO2023139784A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN202280089537.2A CN118574793A (zh) 2022-01-24 2022-01-24 岩棉的制造设备及制造方法
PCT/JP2022/002414 WO2023139784A1 (ja) 2022-01-24 2022-01-24 ロックウールの製造設備および製造方法
JP2023575025A JP7720416B2 (ja) 2022-01-24 2022-01-24 ロックウールの製造設備および製造方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2022/002414 WO2023139784A1 (ja) 2022-01-24 2022-01-24 ロックウールの製造設備および製造方法

Publications (1)

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WO2023139784A1 true WO2023139784A1 (ja) 2023-07-27

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JP (1) JP7720416B2 (https=)
CN (1) CN118574793A (https=)
WO (1) WO2023139784A1 (https=)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991014658A1 (en) * 1990-03-28 1991-10-03 Paroc Oy Ab Method and apparatus for the manufacturing of a mineral fibre felt
JPH04175240A (ja) * 1990-11-09 1992-06-23 Tanabe Kakoki Kk ロックウール製造装置
JPH08295527A (ja) * 1995-04-26 1996-11-12 Kawasaki Steel Corp ロックウール用溶融スラグの成分濃度調整方法
JP2015003842A (ja) * 2013-06-20 2015-01-08 Ｊｆｅロックファイバ−株式会社 ロックウールの製造方法と製造設備

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4737178A (en) * 1986-10-27 1988-04-12 Owens-Corning Fiberglas Corporation Method for manufacturing mineral fibers
JPH03115135A (ja) * 1989-09-28 1991-05-16 Toshio Shiina 溶融炉の出湯方法およびその装置
JPH0616444A (ja) * 1992-06-29 1994-01-25 Kawasaki Steel Corp ロックウ−ルの色相調整方法
JP3381944B2 (ja) * 1992-08-31 2003-03-04 川崎製鉄株式会社 ロックウ−ル中のショット粒率制御方法
CN110590152A (zh) * 2019-09-24 2019-12-20 南京玻璃纤维研究设计院有限公司 一种多组分玻璃纤维梯度高通量制备方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991014658A1 (en) * 1990-03-28 1991-10-03 Paroc Oy Ab Method and apparatus for the manufacturing of a mineral fibre felt
JPH04175240A (ja) * 1990-11-09 1992-06-23 Tanabe Kakoki Kk ロックウール製造装置
JPH08295527A (ja) * 1995-04-26 1996-11-12 Kawasaki Steel Corp ロックウール用溶融スラグの成分濃度調整方法
JP2015003842A (ja) * 2013-06-20 2015-01-08 Ｊｆｅロックファイバ−株式会社 ロックウールの製造方法と製造設備

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JP7720416B2 (ja) 2025-08-07
JPWO2023139784A1 (https=) 2023-07-27
CN118574793A (zh) 2024-08-30

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