Method of recovering environment-detrimental material
AssigneeArmerad Betong Vagforbattringar Aktiebolag
InventorCarl A. Sjodin
Life of this patent
Estimating the term…
Abstract
In a method of in situ recovering and rendering harmless material detrimental to environment, for example asbestos and the like, the material is transported together with ambient air by means of vacuum from the place in situ to a space, in which the material is separated from the air, which is led off upward, filtered and removed. The material is moved from the space and sprayed and/or injected with a substance permanently binding the material, and the material thus bound in the form of manageable units is removed intermittently or continuously from the space.
Claims9
A method of in situ recovering and rendering harmless material detrimental to the environment, for example asbestos, comprising the steps of:
- transporting the material together with ambient air by use of a vacuum from a place in situ to a space;
- separating the material from the air in the space;
- filtering the air;
- discharging air that has been filtered from the space;
- continuously adding a substance to the material to permanently bind the material;
- providing conveying structure that is operable to direct the material away from the space;
- and
- continuously operating the conveying structure so that material with the added substance can be continuously directed from the space and accumulated externally of the space into manageable units in which the material is permanently bound.
A method of in situ recovering and rendering harmless material detrimental to the environment, for example asbestos, comprising the steps of:
- providing first and second conveyors for transporting the material;
- transporting the material together with ambient air by use of a vacuum from a place in situ to a space;
- separating the material from the air in the space;
- filtering the air;
- discharging air that has been filtered from the space;
- transporting material through the space with the first conveyor;
- treating the material with cement after it has passed from the first conveyor;
- and
- transporting the material treated with cement with the second conveyor towards a point of handling,
- whereby the first conveyor does not come into contact with the cement and therefore does not require cleaning.
Dependencies are inferred from the claim text.