地学前缘 ›› 2009, Vol. 16 ›› Issue (4): 269-276.

• 论文 • 上一篇    下一篇

假白榴正长岩烧结反应过程的热力学分析与评价

  

  1. 中国地质大学(北京) 材料科学与工程学院, 北京 100083

  • 出版日期:2009-08-01 发布日期:2009-08-01
  • 作者简介:谭丹君(1982—),女,博士研究生,岩石矿物材料学专业,主要从事矿物材料的研究工作。Email:tandanjun82@163.com
  • 基金资助:

    “十一五”国家科技支撑计划项目（2006BAD10B04）

 Sintering reaction of pseudoleucite syenite: Thermodynamic analysis and process evaluation.

  1. School of Materials Science and Technology, China University of Geosciences(Beijing), Beijing 100083, China

  • Online:2009-08-01 Published:2009-08-01

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摘要：

在综合分析假白榴正长岩物相组成的基础上,以碳酸钠为助剂,分解假白榴正长岩中主要矿物相，对其进行热力学分析,并与石灰石烧结法进行比较。烧结反应实验结果表明,采用碳酸钠为助剂,假白榴正长岩粉体在760～880 ℃条件下反应10～15 h,矿石中主要矿物的分解率可达971％。热力学计算结果表明,纯碱烧结法处理1 t假白榴正长岩矿石,消耗Na2CO3 065 t,且约95％的Na2CO3可以回收循环利用,消耗标准煤19097～20682 kg,排放CO2 077～081 t,一次性资源消耗量、标准煤耗、温室气体CO2排放量分别比石灰石烧结法分别减少了65％、63％、65％。纯碱烧结法具有一次性资源消耗低、能耗低和温室气体CO2排放量少等优点,工业化应用前景十分广阔。

关键词: 关键词：非水溶性钾矿;烧结反应;热力学;纯碱烧结法;石灰石烧结法

Abstract:

 Based on comprehensive analysis of the modal composition of a pseudoleucite syenite ore collected from the Zijin Hill of Lin County, Shanxi Province, we carried out a thermodynamic analysis of pseudoleucite syenite sintering process with sodium carbonate as the additive. It indicates that when the pseudoleucite syenite was sintered at 760880 ℃ for 1015 h, with the sodium carbonate as the additive, the decomposition rate of minerals in the pseudoleucite syenite could reach 971％. The thermodynamic calculation shows that it needs to consume 065 t of Na2CO3 in treating pseudoleucite syenite ore per ton, and about 95％ Na2CO3 could be recycled. This process consumed (229248)×10-6 kJ of heat energy, corresponding to 1909720682 kg of standard coal and the thermal efficiency was 40％; the CO2 emission is 077081 t. Compared with the Russian limestonesintering technique, the consumption of natural mineral resources and energy, and greenhouse gas emissions in sodasintering technique could be reduced by 65％, 63％ and 65％, respectively. Therefore, the procedure suggested in this paper has broad prospects in industrial applications for its economic benefits and environmentalfriendliness.

Key words:

Key words: insoluble potassium ore; sintering reaction; thermodynamics; sodasintering technique; limestonesintering technique

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