| 摘要 |
FIELD: building materials industry, more particularly preparation of building petroleum bitumens. SUBSTANCE: method comprises heating tar containing 5-15 wt % of additive which comprises, wt %: ammonium bichromate 1.0-4.0; sodium chloride, 1.0-4.0; and ammonium nitrate, the balance. EFFECT: reduced amount of toxic discharges and simplified technological process. 2 ex
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