IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
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출원번호 |
US-0658079
(2010-02-02)
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등록번호 |
US-8206504
(2012-06-26)
|
우선권정보 |
GR-050100015 (2005-01-14); GR-050100470 (2005-09-16) |
발명자
/ 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
8 인용 특허 :
72 |
초록
▼
In one example of an embodiment of the invention, a method for producing an aggregate is disclosed comprising mixing sewage sludge from a waste water treatment facility with a non-coal combustion ash silicoaluminous waste material, agglomerating the mixture to form an agglomerate, and pyroprocessing
In one example of an embodiment of the invention, a method for producing an aggregate is disclosed comprising mixing sewage sludge from a waste water treatment facility with a non-coal combustion ash silicoaluminous waste material, agglomerating the mixture to form an agglomerate, and pyroprocessing the agglomerate to form an aggregate. The waste material may comprise municipal solid waste incinerator bottom ash, incinerator fly ash, incinerator filter dusts, cement kiln dusts, waste glass, blast furnace slag, kiln dusts, and/or granite sawing residues, for example. The method may further comprise milling the waste material prior to mixing. Preferably, the milling is wet milling. Pyroprocessing of the agglomerate may take place in a rotary kiln. The resulting aggregate may be a lightweight or a normal weight, sintered or vitrified aggregate. Aggregates and methods for making aggregates of high and low calcium silicoaluminous materials are also disclosed.
대표청구항
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1. A method for producing a lightweight aggregate, comprising: mixing sewage sludge with a non-coal ash silicoaluminous waste material;agglomerating the mixture to form an agglomerate; andpyroprocessing the agglomerate to a temperature up to 1350° C. to form a lightweight aggregate having a relative
1. A method for producing a lightweight aggregate, comprising: mixing sewage sludge with a non-coal ash silicoaluminous waste material;agglomerating the mixture to form an agglomerate; andpyroprocessing the agglomerate to a temperature up to 1350° C. to form a lightweight aggregate having a relative density less than 2 grams per cubic centimeter. 2. The method of claim 1, comprising pyroprocessing the agglomerate in a rotary kiln. 3. The method of claim 1, wherein the sewage sludge is from a waste water treatment facility. 4. The method of claim 1, wherein the waste material comprises one or more of the following: municipal solid waste incinerator residues, waste glass, blast furnace slag, kiln dusts, or mining waste. 5. The method of claim 4, wherein the mining waste comprises granite sawing residues. 6. The method of claim 4, wherein the municipal solid waste incinerator residues comprise one or more of the following: air pollution control residues or incinerator bottom ash. 7. The method of claim 6, wherein the air pollution control residues comprise one or more of the following: municipal solid waste incinerator fly ash or municipal solid waste incinerator filter dusts. 8. The method of claim 4, wherein the kiln dusts comprise cement kiln dusts. 9. The method of claim 1, wherein the waste material comprises more calcium than the sewage sludge. 10. The method of claim 9, wherein: the waste material comprises more than 9% calcium by dry weight; andthe sewage sludge comprises less than 3% calcium by dry weight. 11. The method of claim 9, comprising: mixing from 90% to 60% sewage sludge by dry weight of the mixture with from 10% to 40% of the waste material by dry weight of the mixture. 12. The method of claim 1, wherein the waste material comprises less calcium than the sewage sludge. 13. The method of claim 12, wherein: the waste material comprises less than 10% calcium by dry weight; andthe sewage sludge comprises more than 10% calcium by dry weight. 14. The method of claim 12, comprising: mixing from 30% to 70% sewage sludge by dry weight of the mixture with from 70% to 30% of the waste material by dry weight of the mixture. 15. The method of claim 1, wherein: the lightweight aggregate comprises less than 10% calcium by dry weight. 16. The method of claim 1, further comprising: mixing the sewage sludge and the waste material with a plastic binder prior to agglomerating. 17. The method of claim 1, comprising: pyroprocessing the agglomerate to sinter the agglomerate. 18. The method of claim 1, comprising: pyroprocessing the agglomerate to vitrify and expand the agglomerate and cause volatilization and entrapment of volatized gases to form pores. 19. A method for producing an aggregate, comprising: mixing sewage sludge from a waste water treatment facility with a non-coal ash, silicoaluminous waste material;agglomerating the mixture to form an agglomerate; andpyroprocessing the agglomerate to a temperature up to 1350° C. to expand the agglomerate to form an aggregate having pores. 20. The method of claim 19, comprising pyroprocessing the agglomerate in a rotary kiln. 21. The method of claim 19, comprising pyroprocessing the agglomerate to form a lightweight aggregate having a relative density of less than 2 grams per cubic centimeter. 22. The method of claim 19, wherein the waste material comprises one or more of the following: municipal solid waste incinerator residues, waste glass, blast furnace slag, kiln dusts or mining waste. 23. The method of claim 19, wherein: the waste material comprises more than 9% calcium by dry weight; andthe sewage sludge comprises less than 3% calcium by dry weight. 24. The method of claim 19, wherein: the waste material comprises less than 10% calcium by dry weight; andthe sewage sludge comprises more than 10% calcium by dry weight. 25. A method for producing a lightweight aggregate, comprising: mixing sewage sludge from a waste water treatment facility with a non-coal ash silicoaluminous waste material;agglomerating the mixture to form an agglomerate;pyroprocessing the agglomerate to form a lightweight aggregate having a relative density less than 2 grams per cubic centimeter; andcontrolling one or more properties of the aggregate based, at least in part, on a proportion of the sewage sludge to the waste material and the pyroprocessing temperature. 26. The method of claim 25, controlling at least one of density or water absorption of the aggregate based, at least in part, on the proportion and the temperature. 27. The method of claim 25, wherein the waste material comprises one or more of the following: municipal solid waste incinerator residues, waste glass, blast furnace slag, kiln dusts, or mining wastes. 28. The method of claim 25, wherein: the waste material comprises more than 9% calcium by dry weight; andthe sewage sludge comprises less than 3% calcium by dry weight. 29. The method of claim 25, wherein: the waste material comprises less than 10% calcium by dry weight; andthe sewage sludge comprises more than 10% calcium by dry weight. 30. The method of claim 25, comprising pyroprocessing the agglomerate to sinter the agglomerate. 31. The method of claim 25, comprising pyroprocessing the agglomerate to vitrify and expand the agglomerate. 32. The method of claim 1, wherein the waste material comprises municipal solid waste incinerator bottom ash. 33. The method of claim 1, wherein the waste material comprises air pollution control residues. 34. The method of claim 1, wherein the waste material comprises waste glass. 35. The method of claim 1, wherein the waste material comprises blast furnace slag. 36. The method of claim 1, wherein the waste material comprises kiln dusts. 37. The method of claim 1, wherein the waste material comprises mining waste. 38. The method of claim 16, wherein the mixture comprises up to about 20% plastic binder. 39. The method of claim 1, comprising: pyroprocessing the agglomerate in a temperature range of from 1000° C. up to 1350° C. 40. The method of claim 39, comprising: pyroprocessing the agglomerate in a temperature range up to about 1150° C. 41. The method of claim 40, comprising: pyroprocessing the agglomerate in a temperature range up to about 1140° C. 42. The method of claim 41, comprising: pyroprocessing the agglomerate in a temperature range of from about 970° C. up to about 1140° C. 43. The method of claim 42, comprising: pyroprocessing the agglomerate in a temperature range of from about 980° C. to about 1110° C. 44. The method of claim 40, comprising: pyroprocessing the agglomerate in a temperature range of from about 970° C. up to about 1150° C. 45. The method of claim 11, comprising: mixing from 90% to 80% sewage sludge by dry weight of the mixture with from 10% to 20%% of the waste material by dry weight of the mixture.
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