Cov txheej txheem ntau lawm ntawm emulsified bitumen tuaj yeem faib ua cov txheej txheem plaub hauv qab no: kev npaj me me, npaj emulsification, thiab emulsion cia. Qhov tsim nyog emulsified uas tsim nyog yuav tsum nyob ib ncig ntawm 85 ° C.

Raws li kev siv emulsified bitumen, tom qab xaiv cov cim bitumen tsim nyog thiab daim ntawv me me yog feem ntau cov txheej txheem ntawm bitumen thiab tswj nws ntawm qhov ntsuas kub.

1. Kev npaj ntawm bitumen
Bitumen yog qhov tseem ceeb tshaj plaws ntawm emulsified bitumen, feem ntau tus account rau 50% -65% ntawm tag nrho cov loj ntawm emulsified bitumen.

2. Tsis ua hom phiaj ntawm xab npum daws
Raws li qhov yuav tsum tau emulsified bitumen, xaiv qhov tsim nyog emulsifier hom thiab ntau npaum li kev ntxiv hom kev ntxiv thiab siv emulsifier aqueous (xab npum). Ua raws li cov khoom siv emulsified thiab hom emulsifier, txheej txheem npaj ntawm cov kua aqueous (xab tshuaj) ntawm emulsifier kuj txawv.

3. Emulsification ntawm Bitumen
Tso cov feem tsim nyog ntawm bitumen thiab xab npum kua rau hauv emulsifier ua ke, thiab lwm yam, uas yog tus xab npum ua kua los tsim cov dej hnab ris. Roj bitumen emulsion.
Kev tswj qhov kub thiab txias thaum lub sijhawm npaj npaj tau npaj tau yog qhov tseem ceeb heev. Yog tias qhov kub me me yog qhov qis dhau, nws yuav ua rau lub bitumen kom muaj cov viscosity siab, nyuaj hauv kev txaus, thiab yog li emulsification teeb meem. Yog tias cov me ntsis kub dhau lawm, nws yuav ua rau kev laus ntawm bitumen ntawm ib sab tes, thiab tseem ua rau lub plab me ntsis nyob rau tib lub sijhawm. Lub qhov hluav taws xob kub yog siab dhau, uas cuam tshuam rau kev ruaj ntseg ntawm emulsifier thiab qhov zoo ntawm emulsified bitumen.
Qhov kub ntawm xab npum ua ntej nkag mus rau cov khoom emulsification feem ntau tswj tau ntawm 55-75 ° C. Tso tsheb hlau luam loj yuav tsum tau nruab nrog lub stirting ntaus ntawv mus do tsis tu ncua. Qee qhov emulsifiers uas yog cov khoom ntawm chav sov yuav tsum tau muab rhaub thiab melted ua ntej npaj xab npum. Yog li ntawd, kev npaj ntawm bitumen yog qhov tseem ceeb heev.

4. Khaws ntawm emulsified bitumen
Lub emulsified bitumen tawm los ntawm emulsifier thiab nkag mus rau hauv lub tank ntim tom qab txias. Qee cov kev daws teeb meem aulsous yuav tsum tau ntxiv cov kua qaub los kho tus nqi pH, thaum lwm tus (xws li cov ntsev ammonium) tsis ua.

Kom qeeb txoj kev sib cais ntawm emulsified bitumen. Thaum lub emulsified bitumen yog txau los yog sib xyaw, lub emulsified bitumen yog qhov dej hauv nws evaporates, dab tsi yog qhov tseeb sab laug ntawm txoj kev yog bitumumen. Rau siab tsis tu ncua emmulthified bitumiling cov khoom siv, ib qho ntawm cov xab npum (dej saws ntxiv los ntawm cov khoom siv tsim khoom nws tus kheej, ntev li ntev tau ua rau txhua yam khoom siv tau ua kom tiav; Rau cov khoom siv tsim khoom txuas los txuas ntxiv lossis sib quas ntus xav tau cov kev npaj los ntawm xab npum raws li cov kev yuav tsum tau ua.