FIELD: chemistry; obtaining bitumen from acid sludge.
SUBSTANCE: method involves heating, neutralisation and oxidation through an electrochemical method, distinguished by that, extra modifying additive - polyethylene terephtalate is put in quantity of 3-20% for 100% of oxidised raw material. The result is the obtaining of bitumen (roofing petroleum bitumen RPB 45/190 (GOST 9548-74)).
EFFECT: modifying additive allows for shortening the process of electrochemical oxidation of acid sludge, widen operational characteristics of the obtained bitumen, and obtain oxidised bitumen with characteristics corresponding to roofing bitumen.
5 ex, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF OBTAINING BITUMEN FROM ACID SLUDGE | 2007 |
|
RU2330057C1 |
| METHOD FOR PRODUCTION OF BITUMEN FROM ACID TAR | 2008 |
|
RU2372377C1 |
| METHOD FOR PRODUCTION OF BITUMEN FROM ACID TAR | 2008 |
|
RU2372376C1 |
| PROCESS OF PRODUCING BITUMEN BINDER FROM ACID SLUDGE | 2005 |
|
RU2275408C1 |
| METHOD OF PREPARING BITUMEN BINDER FROM ACID SLUDGE | 2006 |
|
RU2323245C1 |
| METHOD OF PRODUCTION OF THE BITUMINOUS BINDING AGENT FROM THE ACID GOUDRON | 2005 |
|
RU2289604C1 |
| METHOD OF PRODUCING BITUMEN FOR ACID SLUDGE | 2005 |
|
RU2275410C1 |
| METHOD OF REPROCESSING OF THE ACIDIC GOUDRON | 2005 |
|
RU2289605C1 |
| METHOD OF PRODUCING BUILDING OR ROOFING BITUMEN | 2001 |
|
RU2215772C2 |
| METHOD OF ROOFING ASPHALT RECEIVING | 2007 |
|
RU2359990C1 |
