Producing Bitumen from Coke Plant Tar

N. T. Smagulova, Ж. К. Каирбеков, A. A. Akhan

2023

Closed access Metadata (CSL-JSON)
DOI 10.3103/s1068364x23700758
Data confidence 70 medium
How this score is calculated

It is built from checkable properties of the record itself: whether the article has a DOI, how many independent sources confirmed its data, whether the required fields are filled in, and how recent the latest confirmation is. Disagreement between sources and a missing identifier lower it. A value of 80 or above means the record was published without further checking; 60 to 79 means it is published at reduced confidence, with a manual check advisable. A record verified by an editor by hand is never pushed below 90 by a recalculation. This scores our data about the article, not the article itself.

Abstract

A method is proposed for producing viscous bitumen for road use with improved physicomechanical properties by modifying BNA 130/200 bitumen obtained by oxidizing tar from the coking of Shubarkol coal at 160°C using elemental sulfur, with an air supply of 1.5 L/min for 1.5 h. The resulting BNA 60/90 bitumen has a total tar content of 52.09 wt %, with 21.99 wt % hydrocarbons, 24.99 wt % asphaltenes, and 0.93 wt % carbene and carboid. In terms of its penetration index, the viscous BNA 60/90 bitumen belongs to group II on the basis of its rheological properties and deformational properties. That corresponds to sol–gel structure.