Mining or in situ disintegration of hard material – With separation of materials
Patent
1980-03-06
1981-11-03
Purser, Ernest R.
Mining or in situ disintegration of hard material
With separation of materials
209 2, 241 5, 299 18, 405258, 406197, E21C 4114
Patent
active
042982294
ABSTRACT:
An improved method for mining and processing phosphate matrix in its dry state utilizing a gas moving at supersonic velocity as the carrier fluid to perform the various process steps, in a substantially closed system, that yields dry high grade phosphatic materials and dry sand and clay fractions and to recombine and thoroughly mix the sand and clay fractions in approximately equal proportions by weight as they are produced and to transport the sand-clay mixture along with the naturally radioactive Radon-222 gas that is generated during the processing to the mined out pits and depositing them therein after which the leach zone materials of the overburden are deposited thereover and then depositing thereover the sandy materials of the overburden with provisions being made in preselected areas to form lakes to complete the process of reclaiming the land to its natural state immediately and without danger of radiation from the buried radioactive materials.
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patent: 550051 (1895-11-01), McKinlay
patent: 740731 (1903-10-01), Beatey
patent: 3326474 (1967-06-01), Clary et al.
patent: 3329355 (1967-07-01), Clary et al.
patent: 3840188 (1974-10-01), Coombe et al.
patent: 3885931 (1975-05-01), Schaller
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