초록 ▼

The described process utilizes the ash from a trash-to-steam plant and a cementitous binder along with the hot output of an earth purification process and a strictly defined quantity of water in calculated amounts to produce an aggregate which satisfies leach and strength tests and qualifies for use

The described process utilizes the ash from a trash-to-steam plant and a cementitous binder along with the hot output of an earth purification process and a strictly defined quantity of water in calculated amounts to produce an aggregate which satisfies leach and strength tests and qualifies for use in road building and as a landfill cover.

대표청구항 ▼

[ I claim:] [1.] A process for fixing and stabilizing toxic metal and organic contamination contained in ash within a concrete-like aggregate product, the process employing as primary ingredient and as sole external heat source, hot earth, said hot earth being the output of a pyrolytic earth purifie

[ I claim:] [1.] A process for fixing and stabilizing toxic metal and organic contamination contained in ash within a concrete-like aggregate product, the process employing as primary ingredient and as sole external heat source, hot earth, said hot earth being the output of a pyrolytic earth purifier; and secondary ingredients comprising ash containing toxic materials, cement and water; the process comprising the steps of;a.) observing the temperatures of the primary and secondary ingredients,b.) determining the concentration of water in the ash,c.) measuring an amount of primary ingredient,d.) providing a calculation step and conveying the amount, the ingredient temperatures and the concentration of water to the calculation step,e.) establishing product condition limits and conveying these limits to the calculation step,f.) calculating, by way of an iterative heat balance, the quantities of the secondary ingredients required to be mixed with the measured amount of the primary ingredient, to establish product conditions after the mixing step that will be within the desired product condition limits,g.) conveying the calculated quantities of the secondary ingredients plus the measured amount of the primary ingredient to a mixer/tumbler,h.) mixing/tumbling all the ingredients thereby securing a product having a temperature and a moisture content.