JPS57187637A - Discrimination of acidity for coal - Google Patents

Discrimination of acidity for coal

Info

Publication number
JPS57187637A
JPS57187637A JP7282581A JP7282581A JPS57187637A JP S57187637 A JPS57187637 A JP S57187637A JP 7282581 A JP7282581 A JP 7282581A JP 7282581 A JP7282581 A JP 7282581A JP S57187637 A JPS57187637 A JP S57187637A
Authority
JP
Japan
Prior art keywords
coal
acidity
absorbancy
determination
measurement
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
JP7282581A
Other languages
Japanese (ja)
Inventor
Kunihiko Nishioka
Masatoshi Ogawa
Yoshihiko Sunami
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
Sumitomo Metal Industries Ltd
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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP7282581A priority Critical patent/JPS57187637A/en
Publication of JPS57187637A publication Critical patent/JPS57187637A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/22—Fuels; Explosives
    • G01N33/222—Solid fuels, e.g. coal

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

PURPOSE:To discriminte the quality of coal simply and quickly by enabling the determination of slight acidity at a high accuracy in an alkali extraction liquid of coal with the measurement of the absorbancy of light in a specified wavelength range. CONSTITUTION:The absorbancy of an alkali extraction liquid of cool is measured in a wavelength range of 240-400nm, which enabls the measurement of even slight acidity at a high accuracy. Thus, it is possible to measure the acidity of even the type of coal whose acidity could not be previously measured by the determination of maximum fluidity like non-coking coal. This method is applicable for early detection of spontaneous combustion in a yard and inspection of deterioration in the coking of material coal.
JP7282581A 1981-05-13 1981-05-13 Discrimination of acidity for coal Pending JPS57187637A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7282581A JPS57187637A (en) 1981-05-13 1981-05-13 Discrimination of acidity for coal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7282581A JPS57187637A (en) 1981-05-13 1981-05-13 Discrimination of acidity for coal

Publications (1)

Publication Number Publication Date
JPS57187637A true JPS57187637A (en) 1982-11-18

Family

ID=13500572

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7282581A Pending JPS57187637A (en) 1981-05-13 1981-05-13 Discrimination of acidity for coal

Country Status (1)

Country Link
JP (1) JPS57187637A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989005690A1 (en) * 1987-12-16 1989-06-29 Zenichi Matsui Activating device
CN105136700A (en) * 2015-08-26 2015-12-09 山西广宇通科技股份有限公司 Method for determining humic acid content of weathered coal by using spectrophotometer
CN105842272A (en) * 2016-05-30 2016-08-10 武汉钢铁股份有限公司 Coking coal critical temperature test method
WO2022241523A1 (en) * 2021-05-20 2022-11-24 The University Of Queensland Rapid measurement of coal oxidation

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989005690A1 (en) * 1987-12-16 1989-06-29 Zenichi Matsui Activating device
CN105136700A (en) * 2015-08-26 2015-12-09 山西广宇通科技股份有限公司 Method for determining humic acid content of weathered coal by using spectrophotometer
CN105842272A (en) * 2016-05-30 2016-08-10 武汉钢铁股份有限公司 Coking coal critical temperature test method
WO2022241523A1 (en) * 2021-05-20 2022-11-24 The University Of Queensland Rapid measurement of coal oxidation

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