MY113621A - Treatment of fly ash - Google Patents

Treatment of fly ash

Info

Publication number
MY113621A
MY113621A MYPI96003829A MYPI19963829A MY113621A MY 113621 A MY113621 A MY 113621A MY PI96003829 A MYPI96003829 A MY PI96003829A MY PI19963829 A MYPI19963829 A MY PI19963829A MY 113621 A MY113621 A MY 113621A
Authority
MY
Malaysia
Prior art keywords
slag
fly ash
gas
reactor
separated
Prior art date
Application number
MYPI96003829A
Inventor
Johansson Borje
Santen Sven
Original Assignee
Kvaerner Tech & Research 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 Kvaerner Tech & Research Ltd filed Critical Kvaerner Tech & Research Ltd
Priority to MYPI96003829A priority Critical patent/MY113621A/en
Publication of MY113621A publication Critical patent/MY113621A/en

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  • Processing Of Solid Wastes (AREA)

Abstract

A METHOD AND A PLANT FOR TREATMENT OF FLY ASH ARE DESCRIBED, WHEREIN HEAVY METALS ARE SEPARATED AND WHEREIN THERE IS FORMED A LEACHING RESISTANT SLAG. THE TREATMENT TAKES PLACE IN A REACTOR (2) AND THE FLY ASH IS INTRODUCED INTO AN OXIDIZING GAS STREAM WHICH IS HEATED TO AT LEAST 2500?C IN PLASMA GENERATOR (1). THE FLY ASH MELTS AND FORMS LIQUID DROPS OF SLAG. A CARBONACEOUS OR HYDROCARBONACEOUS MATERIAL IS ADDED TO THE GAS STREAM. THIS BURNS AND SUPPLIES EXTRA ENERGY TO THE PROCESS. THE RATIO OF OXYGEN AND CARBON IS REGULATED IN SUCH A MANNER THAT THE RATIO CO2/CO + CO2 IS KEPT WITHIN THE LIMITS 0.4 - 0.9. HEAVY METALS IN THE FLY ASH SUCH AS ZINC AND LEAD ARE THEREBY REDUCED AND PASS INTO THE GAS PHASE. THE GAS IS DISCHARGED FROM THE REACTOR (2), COOLED AND WASHED AND METAL OXIDES ARE SEPARATED. THE GAS WILL ALSO CONTAIN CHLORINE AND SULPHUR WHICH ARE SEPARATED IN A GAS SCRUBBER. THE SLAG IS COLLECTED IN THE BOTTOM OF THE REACTOR (3) AND CAN BE CONTINUOUSLY TAPPED VIA A SLAG LOCK (9). THE SLAG''S CONTENT OF CAO AND SIO2 CAN BE REGULATED BY THE ADMIXTURE OF A SLAG-FORMING MATERIAL WITH A HIGH CONTENT OF SIO2. A SLAG IS THEREBY OBTAINED WITH EXCELLENT LEACHING RESISTANCE.
MYPI96003829A 1996-09-16 1996-09-16 Treatment of fly ash MY113621A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
MYPI96003829A MY113621A (en) 1996-09-16 1996-09-16 Treatment of fly ash

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
MYPI96003829A MY113621A (en) 1996-09-16 1996-09-16 Treatment of fly ash

Publications (1)

Publication Number Publication Date
MY113621A true MY113621A (en) 2002-04-30

Family

ID=81581728

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI96003829A MY113621A (en) 1996-09-16 1996-09-16 Treatment of fly ash

Country Status (1)

Country Link
MY (1) MY113621A (en)

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