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Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
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Accurate analysis of complex samples often requires advanced preparation techniques to achieve reliable and reproducible results. Samples containing inorganic or organic materials can be challenging to dissolve or decompose effectively. Standard sample preparation methods include acid digestion, fusion, dry ashing, and wet digestion.
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关于微波-磁性分离-浮动联合煤炭脱硫的实验研究

Guangming Wang1, Zhijun Ma1,2, Zhijing Zhou1

  • 1College of Mining, Liaoning Technical University, Fuxin 12300, China.

Molecules (Basel, Switzerland)
|August 29, 2024
PubMed
概括

一种新的微波磁分离-浮动方法显著提高了煤炭脱硫和清除. 这种综合方法通过利用微波辐射来提高磁分离和漂浮效率来提高硫和灰去除率.

关键词:
煤炭是一种煤炭.消灭率的消灭率脱硫率是指脱硫的速度.漂浮式水上游泳系统是什么磁性分离装置的磁性分离方式微波辐射辐射微波辐射辐射的作用

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科学领域:

  • 材料科学 材料科学 材料科学
  • 化学工程是化学工程的重要组成部分.
  • 矿物加工 矿物加工

背景情况:

  • 煤炭脱硫和清除对于环境保护和高效能源利用至关重要.
  • 传统方法在实现高清除率和高效率方面往往面临局限性.
  • 开发先进的技术来改进这些过程对于煤炭行业来说至关重要.

研究的目的:

  • 调查用于原煤处理的微波磁分离浮动联合方法.
  • 为了比较其对单磁分离和微波磁分离的有效性.
  • 优化参数和阐明微波辐射在脱硫和清除上的机制.

主要方法:

  • 对单磁分离,微波磁分离和微波磁分离-浮动进行比较分析.
  • 参数的系统变化:微波辐射时间和功率,研磨时间,磁场强度,板的宽度和试剂剂量 (发泡剂,收集器,抑制剂).
  • 分析微波辐射对矿反应性,磁性和煤炭表面特征的影响.

主要成果:

  • 微波磁分离-浮动组合方法实现了最佳的脱硫率为76.51%,脱硫率为61.91%.
  • 在优化条件下,化硫的去除率达到96.50%.
  • 发现微波辐射可以增强铁矿石的磁性,改变煤炭表面的水友性,改善两个分离阶段.

结论:

  • 联合微波磁分离-浮动方法为煤炭脱硫和清除提供了一种优越的方法.
  • 微波辐射发挥着双重作用,通过增加石的磁性来增强磁性分离,通过修改煤炭表面特性来改善浮动.
  • 优化参数和了解底层机制为实际应用铺平了道路.