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| Number | Title | Issue Date |
| 6778881 | Monitoring and control of a froth flotation plant The invention uses machine-vision to improve the performance of a flotation operation to provide a substitute for conventional human vision and problem-solving abilities. The invention redirects the conventional approach of “characterizing the froth” to “measu... | 08/17/2004 |
| 6026965 | Process for recovering mineral particles, metal particles or small precious stones from an aqueous slim associated with an ore body or mineral deposit or processing thereof A process for recovering mineral particles, metal particles or small precious stones from an aqueous slime associated with an ore body or mineral deposit or processing thereof, said aqueous slime containing mineral particles, metal particles or small prec... | 02/22/2000 |
| 5998753 | Machine for sorting objects such as postal envelopes A sorting machine with a standard operator work space containing a compact and ergonomic assembly of a hopper (5) for a horizontal stack of envelopes (3) between a control panel (6) and an extraction head (9), and a set of pigeonholes (11) for receiving a... | 12/07/1999 |
| 5893463 | Recovering precious metals and small precious stones from clay suspensions A process for recovering precious metal particles or small precious stones from aqueous clay suspensions containing said precious metal particles or precious stones in suspension with clay particles includes adding a sufficient amount of deflocculating ag... | 04/13/1999 |
| 5108495 | Method controlling a process by impedance analysis The invention relates to a method for controlling a process operating by means of the electrochemical potential, in which process complex ores and/or concentrates are treated in order to arrange the valuable components in the materials in a form appropria... | 04/28/1992 |
| 4968415 | Process for selective flotation of phosphorus minerals A process for selective flotation of phosphate minerals, wherein a compound of the formula 1a or 1b ##STR1## in which R1 is branched or unbranched C8 -C24 -alkenyl, R2 is branched or unbranched C1 | 11/06/1990 |
| 4372843 | Method of beneficiating phosphate ores containing dolomite A method of beneficiating a phosphate ore containing silica and an alkaline earth metal carbonate impurity, particularly dolomite or calcite. The steps include testing the ore for excessive levels of carbonate impurities, the use of conventional flotation... | 02/08/1983 |
| 4364824 | Flotation of phosphate ores containing dolomite A reverse flotation process for removing alkaline earth metal carbonate impurities particularly dolomite and calcite as the cell overflow from a flotation feed reagentized with water, a carbonate collector, a phosphate depressant and a pH regulator to abo... | 12/21/1982 |
| 4227996 | Flotation process for improving recovery of phosphates from ores A flotation process is provided for beneficiating phosphate ores in at least two floats after conditioning with 0.1-1.5 pound per ton of fuel oil and adding 0.025-0.1 pound per ton of a frother and 0.2-0.5 pound per ton of a polyamine cationic collector t... | 10/14/1980 |
| 4199064 | Process for beneficiating non-sulfide minerals The use of a collector combination of a fatty acid and a N-sulfodicarboxylic acid aspartate provides boostering action in the recovery of non-sulfide minerals.... | 04/22/1980 |
| 4189103 | Method of beneficiating phosphate ores A method is disclosed for beneficiating a phosphate ore matrix containing apatite, siliceous gangue, and an alkaline earth metal carbonate mineral impuritywhich includes the steps of washing and sizing the ore, subjecting it to a gravity separation, a con... | 02/19/1980 |
