JPS57145186A - Preparation of pulverized coal-water slurry for deashing - Google Patents

Preparation of pulverized coal-water slurry for deashing

Info

Publication number
JPS57145186A
JPS57145186A JP2988081A JP2988081A JPS57145186A JP S57145186 A JPS57145186 A JP S57145186A JP 2988081 A JP2988081 A JP 2988081A JP 2988081 A JP2988081 A JP 2988081A JP S57145186 A JPS57145186 A JP S57145186A
Authority
JP
Japan
Prior art keywords
coal
slurry
deashing
pulverized coal
rate
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
JP2988081A
Other languages
Japanese (ja)
Inventor
Tadashi Muranaka
Hidetoshi Akimoto
Ryuichi Kaji
Takeo Komuro
Hideo Kikuchi
Takao Hishinuma
Fumito Nakajima
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.)
Hitachi Ltd
Mitsubishi Power Ltd
Original Assignee
Babcock Hitachi KK
Hitachi 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 Babcock Hitachi KK, Hitachi Ltd filed Critical Babcock Hitachi KK
Priority to JP2988081A priority Critical patent/JPS57145186A/en
Publication of JPS57145186A publication Critical patent/JPS57145186A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain a pulverized coal slurry capable of being deashed at a high deashing rate and at a high recovery rate, by varying the time of agitation of the pulverized coal with water depending on the type of the coal and conc. of the slurry.
CONSTITUTION: In preparing a slurry from a pulverized coal of ash content ≥10% and water, 20wt% or less, based on the slurry, coal is used and agitated for a period of time varying 10W30min depending on the ash content of the coal and conc. of the slurry. Deashing rate has been hitherto low because a hydrophilic ash isolated by the pulverization of the coal is not sufficiently dispersed in the water phase because the max. agitation time is about 5min independently of the conc. of the slurry or the type of the coal. It is possible to improve such defect and to effect deashing at a high deashing rate and at a high recovery rate.
COPYRIGHT: (C)1982,JPO&Japio
JP2988081A 1981-03-04 1981-03-04 Preparation of pulverized coal-water slurry for deashing Pending JPS57145186A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2988081A JPS57145186A (en) 1981-03-04 1981-03-04 Preparation of pulverized coal-water slurry for deashing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2988081A JPS57145186A (en) 1981-03-04 1981-03-04 Preparation of pulverized coal-water slurry for deashing

Publications (1)

Publication Number Publication Date
JPS57145186A true JPS57145186A (en) 1982-09-08

Family

ID=12288285

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2988081A Pending JPS57145186A (en) 1981-03-04 1981-03-04 Preparation of pulverized coal-water slurry for deashing

Country Status (1)

Country Link
JP (1) JPS57145186A (en)

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