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nature : from oil vacuum distillation system remnants of the asphalt. Nature and similar natural asphalt, asphaltene and resin components are roughly the same. Mineral oil from the difference was larger. There are three main method : (1) distillation, remnants of thermal steam distillation. Asphalt from the softening point greater than 100 ° C, needle into about 90-200 degrees. (2) air oxidation, using air oxidation residue. Asphalt from the rigidity, heat resistance and viscous. (3) oxide distillation, remnants of overheated steam distillation, in addition to the use of air oxidation. Available hardness of the largest asphalt. It can be used by different methods of production of different specifications asphalt oil to meet different requirements and they do not have to cope with the natural asphalt used. Asphalt oil is less than 1% ash, sulfur and without calcium; Sulfur also smaller; Mineral oil content. With excellent bonding, water resistance and anti-corrosion, widely used in paints, plastics and rubber industry, the carpet used in the manufacture of paper and road surface.
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