Title:
METHOD OF TREATING CONTAMINATED MINERAL SUBSTANCE
Document Type and Number:
Japanese Patent JPS63310691
Kind Code:
A
Abstract:
For the production of a product which can be dumped or utilized, the mineral substances are subjected in a rotary kiln to a thermal treatment at a temperature at which the charge of the rotary kiln is transformed to a pasty to liquid slag phase. The composition of the charge is so selected that a slag phase is produced in which the main components, which constitute a matrix, are in the range from 60 to 72% SiO2, 10 to 30% Al2O3 and 5 to 25% CaO+MgO, of said matrix, wherein the total percentage of SiO2+Al2O3+CaO+MgO equals 100, the total of the main components SiO2, Al2O3, CaO and MgO amounts to more than 60% on a dry and ignition loss-free basis, of the mineral matter which is charged to the rotary kiln. The slag phase discharged from the rotary kiln is cooled and the exhaust gas from the rotary kiln is purified.
Inventors:
HAARII ZERUBENTO
Application Number:
JP13825488A
Publication Date:
December 19, 1988
Filing Date:
June 04, 1988
Export Citation:
Assignee:
METALLGESELLSCHAFT AG
International Classes:
B01J6/00; B09B3/00; B09C1/06; C02F11/00; C04B5/00; C04B5/02; C04B18/02; C04B32/00; (IPC1-7): B01J6/00; B09B3/00; C04B5/00; C04B5/02
Domestic Patent References:
| JPS53104619A | 1978-09-12 | |||
| JPS5711272A | 1982-01-20 | |||
| JPS50122508A | 1975-09-26 | |||
| JPS5227097A | 1977-03-01 |
Attorney, Agent or Firm:
Masaru Tsuchiya