| 简介 |
The invention relates to a 2- based In-situ-reduction-and Treatment process CO for the and be applied in the recovery of metals from arm ore storesfluid mining industry, extremely low deposits and small deposits, in particular of rare earths, germanium, gallium, indium, platinum groups metals, tantalum, niobium, antimony, cobalt, magnesium and tungsten. The invention is based on the problem, arm ore stores, very deep formations and small. Deposit, the are not degradable by open-pit mining, from the economic point of view and, at the same time respecting the environment and reduce through the use of under-meets with regard to their health endangering miners not. The problem is solved thereby that the rock in a first operation to the fullest extent possible and high pressures with supercritical-CO [...] 2 is. This partition lines are opened to weak spots in the rock, the allowed advancement of the supercritical CO a further 2. Next to the hydraulic effect due to said high pressures (e.g. field-late ) [...] be certain rocks, which goes hand in hand with a decreasing the volume. High-pressure water is now injected in a second step that leads to the formation of carbonic acid in contact with the supercritical CO 2 dissolves and carbonates. Through the pulsed fashion to many hundreds in alternation 2 and water introducing CO can be initiated solution processes removed from the bore metres. |
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