JPS57209989A - Preparation of coal tar pitch - Google Patents

Preparation of coal tar pitch

Info

Publication number
JPS57209989A
JPS57209989A JP9450681A JP9450681A JPS57209989A JP S57209989 A JPS57209989 A JP S57209989A JP 9450681 A JP9450681 A JP 9450681A JP 9450681 A JP9450681 A JP 9450681A JP S57209989 A JPS57209989 A JP S57209989A
Authority
JP
Japan
Prior art keywords
coal tar
pitch
impregnation
coal
tar pitch
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
JP9450681A
Other languages
Japanese (ja)
Inventor
Yoshiharu Nishimura
Yuzuru Takizawa
Kenichi Oishi
Satoshi Yuya
Kozo Yumitate
Takeshi Nagasawa
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
Kawatetsu Kagaku KK
Original Assignee
Kawasaki Steel Corp
Kawatetsu Kagaku KK
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 Kawasaki Steel Corp, Kawatetsu Kagaku KK filed Critical Kawasaki Steel Corp
Priority to JP9450681A priority Critical patent/JPS57209989A/en
Publication of JPS57209989A publication Critical patent/JPS57209989A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain pitch useful for impregnation carried out to densify and strengthen a carbon product, by thermally treating coal tar or coal pitch and forming an initial mesophase followed by adjusting the softening point thereof to a desired value.
CONSTITUTION: Coal tar pitch of free carbon content ≤1% or coal tar of free carbon content ≤0.6% is thermally treated at 350W450°C to form not more than 1% mesophase. The softening point of the obtd. coal tar pitch of coal tar is adjusted to a desired value. When high-temp. carbonized coal tar or coal tar pitch is used as a raw material, a high carbonization yield is obtd. because of high aromaticity and a high carbonization rate. Thus it is poasible to uniformly impregnate a carbon product with a large amt. of pitch and to economically prepare a pitch for impregnation excellent in impregnation efficiency and carbonized in a high yeild.
COPYRIGHT: (C)1982,JPO&Japio
JP9450681A 1981-06-18 1981-06-18 Preparation of coal tar pitch Pending JPS57209989A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9450681A JPS57209989A (en) 1981-06-18 1981-06-18 Preparation of coal tar pitch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9450681A JPS57209989A (en) 1981-06-18 1981-06-18 Preparation of coal tar pitch

Publications (1)

Publication Number Publication Date
JPS57209989A true JPS57209989A (en) 1982-12-23

Family

ID=14112195

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9450681A Pending JPS57209989A (en) 1981-06-18 1981-06-18 Preparation of coal tar pitch

Country Status (1)

Country Link
JP (1) JPS57209989A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985001057A1 (en) * 1983-08-29 1985-03-14 Osaka Gas Company Limited Process for treating coal tar or coal tar pitch
JPS6051783A (en) * 1983-08-31 1985-03-23 Osaka Gas Co Ltd Production of binder

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985001057A1 (en) * 1983-08-29 1985-03-14 Osaka Gas Company Limited Process for treating coal tar or coal tar pitch
JPS6049085A (en) * 1983-08-29 1985-03-18 Osaka Gas Co Ltd Method for treating coal tar or coal tar pitch
JPH0149316B2 (en) * 1983-08-29 1989-10-24 Osaka Gas Co Ltd
JPS6051783A (en) * 1983-08-31 1985-03-23 Osaka Gas Co Ltd Production of binder
JPH0149317B2 (en) * 1983-08-31 1989-10-24 Osaka Gas Co Ltd

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