JPS5585609A - Boring method for tap hole of blast furnace - Google Patents

Boring method for tap hole of blast furnace

Info

Publication number
JPS5585609A
JPS5585609A JP15796978A JP15796978A JPS5585609A JP S5585609 A JPS5585609 A JP S5585609A JP 15796978 A JP15796978 A JP 15796978A JP 15796978 A JP15796978 A JP 15796978A JP S5585609 A JPS5585609 A JP S5585609A
Authority
JP
Japan
Prior art keywords
steel pipe
tap hole
gas
press
mud
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.)
Pending
Application number
JP15796978A
Other languages
Japanese (ja)
Inventor
Yoshitaka Yazawa
Akira Tsuji
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel 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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP15796978A priority Critical patent/JPS5585609A/en
Publication of JPS5585609A publication Critical patent/JPS5585609A/en
Pending legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)

Abstract

PURPOSE: To open a tap hole at a low cost, by boring a blockaded tap hole by means of a hollow steel pipe attached to a boring machine while ejecting high-press. gas from the top end of the steel pipe.
CONSTITUTION: In front of a tap hole 1 blockaded by filling mud 1a is set a boring machine 4 provided with a steel pipe 2, which is opened at both ends, through a shank 3. The top end of the steel pipe 2 is pressed to the mud 1a, and the drill motor 41, the hammer motor 42 of the boring machine 4 are diriven so as to give revolving and percussing motion to the steel pipe 2. Simultaneously, high press. gas is delivered through a gas-feeding pipe 5 and is ejected through the top end of the steel pipe 2. Revolution and percussion of the steel pipe 2 bores the mud 1a. During the operation, because the top end of the steel pipe 2 is cooled by the high-press. gas, thereby effecting no lowering in rigidity thereof, and because the cut off powder of the mud 1a is taken out of the tap hole by the high-press. gas, the tap hole 1 is opened easily at a low cost without use of expensive bits.
COPYRIGHT: (C)1980,JPO&Japio
JP15796978A 1978-12-21 1978-12-21 Boring method for tap hole of blast furnace Pending JPS5585609A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15796978A JPS5585609A (en) 1978-12-21 1978-12-21 Boring method for tap hole of blast furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15796978A JPS5585609A (en) 1978-12-21 1978-12-21 Boring method for tap hole of blast furnace

Publications (1)

Publication Number Publication Date
JPS5585609A true JPS5585609A (en) 1980-06-27

Family

ID=15661390

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15796978A Pending JPS5585609A (en) 1978-12-21 1978-12-21 Boring method for tap hole of blast furnace

Country Status (1)

Country Link
JP (1) JPS5585609A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1069191A1 (en) * 1999-07-07 2001-01-17 Von Roll Umwelttechnik AG Tapping apparatus and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1069191A1 (en) * 1999-07-07 2001-01-17 Von Roll Umwelttechnik AG Tapping apparatus and method

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