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Measures for Improving Qualification Rate of Modified Pitch
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Xue-yan Cao, Lu-bin Zhang, Ya Tu, Nan Zhou, Fang Di, Zhi-hui Ma
Rare Earth Steel | 2020, 46(4) : 16 - 19
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Rare Earth Steel | 2020, 46(4): 16-19
• Production Practice and Management •
Measures for Improving Qualification Rate of Modified Pitch
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Xue-yan Cao, Lu-bin Zhang, Ya Tu, Nan Zhou, Fang Di, Zhi-hui Ma
Affiliations
  • Coke Chemical Engineering Branch Co. of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
Published: 2020-08-25 doi: 10.13647/j.cnki.btgkj.2020.04.005
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The main factors affecting quality of modified pitch are determined by analyzing the factors affecting qualification rate of modified pitch. They are low content of toluene insoluble in crude tar, flash oil flows backwards, poor cooling effect of flash oil and low degree of polycondensation of modified pitch in the reactor. The qualification rate of modified pitch is significantly improved by such measures as reducing rotate speed of centrifuges, transforming gas collecting tube of flash oil, absorption tube of flue gas and position of cooler of flash oil, increasing the softening point of mid-temperature pitch and temperature of reactor.

modified pitch  /  content of toluene insoluble  /  qualification rate
曹雪燕, 张鲁斌, 图雅, 周楠, 邸芳, 马智慧. 提高改质沥青合格率的措施. 包钢科技, 2020 , 46 (4) : 16 -19 . DOI: 10.13647/j.cnki.btgkj.2020.04.005
Xue-yan Cao, Lu-bin Zhang, Ya Tu, Nan Zhou, Fang Di, Zhi-hui Ma. Measures for Improving Qualification Rate of Modified Pitch[J]. Science & Technology of Baotou Steel, 2020 , 46 (4) : 16 -19 . DOI: 10.13647/j.cnki.btgkj.2020.04.005
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Year 2020 volume 46 Issue 4
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doi: 10.13647/j.cnki.btgkj.2020.04.005
  • Receive Date：2020-05-21
  • Online Date：2026-10-20
  • Published：2020-08-25
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  • Received：2020-05-21
Affiliations
    Coke Chemical Engineering Branch Co. of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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