IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0026492
(1979-04-03)
|
|
발명자
/ 주소 |
- Styron Robert W. (Marietta GA)
|
| 출원인 / 주소 |
- Amax Resource Recovery Systems, Inc. (Atlanta GA 02)
|
| 인용정보 |
피인용 횟수 :
33 인용 특허 :
2 |
초록
▼
Solid, leach-resistant bodies are formed from aqueous heavy metal sludge and fly ash formed in the combustion of subbituminous coal from the Power River Basin by slurrying the sludge with an amount of fly ash equivalent to between about 20 wt. % and about 70 wt. % based on the weight of the slurry,
Solid, leach-resistant bodies are formed from aqueous heavy metal sludge and fly ash formed in the combustion of subbituminous coal from the Power River Basin by slurrying the sludge with an amount of fly ash equivalent to between about 20 wt. % and about 70 wt. % based on the weight of the slurry, wherein the initial liquid content of the slurry is such that the slurry will harden into a body having a 7-day compressive strength of at least about 250 psi, and allowing the slurry to harden.
대표청구항
▼
CM,1. A process of treating an aqueous sludge containing at least one heavy metal species selected from the group consisting of tungsten, cadmium, chromium, strontium, copper, iron, lead, nickel, zinc, molybdenum, tin, magnesium, aluminum, phosphorus, and manganese, to form a solid leach-resistant b
CM,1. A process of treating an aqueous sludge containing at least one heavy metal species selected from the group consisting of tungsten, cadmium, chromium, strontium, copper, iron, lead, nickel, zinc, molybdenum, tin, magnesium, aluminum, phosphorus, and manganese, to form a solid leach-resistant body, comprising forming a slurry consisting of said sludge, fly ash formed in the combustion of sub-bituminous coal from the Powder River Basin wherein said fly ash is present in an amount effective to form a slurry which will harden into a solid, leach-resistant body, and an initial water content such that the body will have a 7-day compressive strength of at least about 250 psi, and allowing the slurry to harden.
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