Treatment and handling of metallurgical slag
OwnerEdouard Legille, Carlo Heinzinventors
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Abstract
Disclosed is an installation for the treatment and handling of metallurgical slag which includes means for the disintegration of a flow of pyroplastic slag by mechanical impacts and cooling means for the cooling of the particles of slag formed by the disintegration. The installation comprises at least one perforated endless band positioned in the path of fall of the particles of slag projected by the disintegration means and cooled by the said cooling means. The installation also comprises an insulating enclosure positioned immediately above the perforated band and which contains the disintegration and cooling means, and means for trapping the ascending gaseous and/or solid by-products.
Claims17
An installation for the treatment and handling of metallurgical slag to produce, either separately or simultaneously, granulated slag, expanded slag and/or mineral wool and automatically collecting said products, and having means for the disintegration by mechanical impacts of a flow of pyroplastic slag and cooling means for the cooling of the particles of slag formed by the disintegation, said installation comprising at least one perforated endless band positioned in the path of fall of the particles of slag which are projected by said disintegration means and rotating substantially in a direction parallel to the path of projection of said particles and the particles are cooled by said cooling means, an insulating enclosure positioned immediately above said perforated band, a section of the lower part of said enclosure being trapezoidal in shape, decreasing in size in the direction of said perforated band, and having one or more air admission slits, said insulating enclosure containing said disintegration and cooling means and means for trapping the ascending gaseous and/or solid by-product of the slag, said means for trapping said solid being mounted in the upper portion of said enclosure and comprising an endless rotary filter rotating about two cylinders positioned outside the enclosure, a scraper to detach said solid from said filter and a reservoir to collect said detached solid.
Process for the treatment and handling of metallurgical slag to produce granulated slag, expanded slag and/or mineral wool either separately or simultaneously and in which a flow of liquid slag is disintegrated mechanically and thrown to a certain distance, in the form of particles of varying degree of fineness, and collected on at least one perforated conveyor band rotating substantially in a direction parallel to the trajectory of the particles, after which these particles are cooled, wherein the disintegration and the cooling are effected inside a closed insulating enclosure from which the particles of solidified slag are evacuated continuously or intermittently at a rate which varies according to the properties required in the slag to be produced and/or to the temperature and quantity of water used, said process further comprising the steps of preventing the gaseous by-products from directly escaping into the atmosphere;
- intercepting the ascending solid by-products on a filter and separating the water from the solidified particles of slag as and when the latter occur and recycling said water for the treatment process for the hot slag.
Dependencies are inferred from the claim text.