Plastic and nonmetallic article shaping or treating: processes – Recycling of reclaimed or purified process material – Of excess solid particulate
Patent
1999-09-14
2000-04-25
Derrington, James
Plastic and nonmetallic article shaping or treating: processes
Recycling of reclaimed or purified process material
Of excess solid particulate
264117, 264122, 264DIG49, B29C 6702
Patent
active
060540745
ABSTRACT:
This is a method of producing manufactured aggregates from coal combustion by-products having sulfur. Recycle fines containing calcium hydroxide, an aluminum-containing material, and water are mixed together to form a feed mix which is agglomerated into an agglomerated product. The agglomerated product is combined with curing fines which contain calcium oxide which together form a blended mix. The blended mix is cured using the moisture in the blended mix which is used to exothermally hydrate the calcium oxide in the blended mix to form calcium hydroxide and which autogenically provides the required heat for curing and converts the calcium oxide in the blended mix to a dry calcium hydroxide-containing material to form aggregate products and dry fines. The aggregate products are separated from the dry fines, the dry fines are recycled to the mixing step and the aggregates are taken and used as a useful product for other purposes.
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Wasson George E.
Wu Muh-Cheng M.
Consol Inc.
Derrington James
LandOfFree
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