Mining or in situ disintegration of hard material – With separation of materials
Patent
1984-02-06
1986-07-15
Suchfield, George A.
Mining or in situ disintegration of hard material
With separation of materials
299 14, 299 18, E21C 4902
Patent
active
046002421
ABSTRACT:
At peat mining peat is suspended in water to a slurry or suspension which is led to a dewatering plant. From the dewatering plant (13) return water is returned and used to heat the raw peat in connection with the mining area. The return water can be spread onto the moss over an area (11) at a suitable distance from the mining pit (2), thereby at least partially displacing the moss water and providing water for making a slurry, the moss water preferably being drained to the mining pit. The return water contains also a separated fine parts fraction of the peat as well as peat ash and/or other chemicals which break down the colloidal bonds of the peat and which preferably also raise the pH-value of the water which is drained into the mining pit together with said fine parts fraction.
REFERENCES:
patent: 645861 (1900-03-01), Laycock
patent: 1038565 (1912-09-01), Granville
patent: 2563623 (1951-08-01), Scott
patent: 4184547 (1980-01-01), Klass et al.
Peat Report of the National Swedish Power Administration, 1982, pp. 4:2.
No. NE 1981:5 report from the Swedish Board for Research in Energy Production, 1981, pp. 40-49.
Armerad Betong Vagforbattringar Aktiebolag
Suchfield George A.
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