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Fly ash from pulverised coal boilers is delivered to a storage site as a water suspension, the wt. ratio of ash to water being at least 1:1, pref. 2.5:1. Power industry slags and other waste solids may also be included in an amt. up to 20 wt.% of total. Good solidification is normally achieved after about 10 days. Suitable additives to control the hardening rate may also be included, e.g. lime, hydrated Al sulphate, hydrated Ca nitrate, hydrated Ca chloride, Na and K sulphate, etc. in an amt. up to 7 wt.% of total. Water hydrates and solidifies the ash, thus avoiding drainage of highly mineralised water, and permitting controlled storage of ash waste in dust-free form and to a high level.
PT7274581A1981-03-261981-03-26Process for filling and compacting surface storage yards with waste material from power plants
PT72745A
(en)
A method of filling with simultaneous packing superficial storage yards with waste materials from power plants, thermal-electric power stations and heating plants
Method of filling and simultaneous packing of wastes of electric power stations,thermal power stations and heat electric generation plants in surface material storage yards
A procedure for depositing solid waste or content in liquid media in a non-contaminant way (Machine-translation by Google Translate, not legally binding)