Method and system for winning minerals
OwnerWouter Hugo Van Eek, Henri Marie Boers +3inventors
InventorsWouter Hugo Van Eek, Henri Marie Boers, Arnold Willem J. Grupping, Pieter Jacobus J. Van Wamelen, Willem Christian Rehm
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Abstract
A sectional scraper device which is foldable in zig-zag position by remote pulling means and which can be let down through a clad bore hole and can be deviated to follow layers of mineral to be mined by a to and fro movement of the scraper device combined with transport of loosened minerals by liquid circulation through the bore hole. The scraping action may be strengthened by the action of liquid jets emanating from the scraper device.
Claims12
A method of mining minerals comprising forming a bore hole from the surface into the mineral formation, introducing into the bore hole from the surface in a stretched position a sectional scraper structure that can be folded into a zig-zag position in the mineral formation, pulling the scraper into a zig zagged condition from the surface, moving the zig zagged scraper up and down from the surface to exert a scraping action in the mineral formation and circulating a liquid through the bore hole to raise the scraped loose mineral upwardly through the bore hole.
The method of mining minerals comprising forming a bore hole from the surface into the mineral formation, introducing into the bore hole from the surface in a stretched position a sectional scraper structure that can be folded into a zig-zag position in the mineral formation, pulling the scraper into a zig zagged condition from the surface, moving the zig zagged scraper up and down from the surface to exert a scraping action in the mineral formation and circulating a liquid through the bore hole to raise the scraped loose mineral upwardly through the bore hole, replacing the circulating liquid in the chamber formed after completion of the mining with a liquid under pressure, sealing the said chamber under pressure so that the roof of the chamber is prevented substantially from collapsing during mining in adjacent chambers.
A scraping device for the underground mining of a mineral formation comprising a hollow cylindrical connecting pipe to be inserted into a bore hole, a closed hollow scraper means in a plurality of sections with adjacent sections being hinged so that the scraper may be folded into a zig-zag position, means for folding the scraper means in its zig-zag position from the surface, the scraper means sections being mounted so that when the scraper means is folded the scraping portions are extending sideways with respect to the central axis of the scraper means as a whole, the hollow connecting pipe means ending in a first closed section of the scraping means and means provided in the hollow connecting pipe for circulating liquid through the bore hole.
A scraping device for the underground mining of a mineral formation comprising a hollow cylindrical connecting pipe to be inserted into a bore hole, a closed hollow scraper means in a plurality of sections with adjacent sections being hinged so that the scraper may be folded into a zig-zag position, means for folding the scraper means in its zig-zag position from the surface, the scraper means sections being mounted so that when the scraper means is folded the scraping portions are extending sideways with respect to the central axis of the scraper means as a whole, the hollow connecting pipe means ending in a first closed section of the scraping means and means provided in the hollow connecting pipe for circulating liquid through the bore hole, the said means for folding the scraper means comprising pulling means passing from the surface through the hollow connecting pipers and being slideably connected to every second hinged sections and secured to the lower end of the lower most scraping section.
Dependencies are inferred from the claim text.