Electrostatic coal beneficiation - potential applications and research needs -
Conference
·
OSTI ID:45122
- Pittsburgh Energy Technology Center, PA (United States)
Electrostatic beneficiation makes use of the fact that mineral impurities and coal matrices can be charged differently, and thus can be separated when an external electrical field is applied. Electrostatic beneficiation can work effectively for fine coal particles in the size range of 1 mm {times} 0. As a dry process, electrostatic separation has many advantages over wet processes, notably: the ability to operate in areas where water resources are scarce, and no need for dewatering the processed coal. Additionally, electrostatic separation has a great potential for offering an alternative to the advanced wet processes for cleaning fine coal, and provides a unique opportunity for treating pulverized coal in power plants. This paper analyzes fundamental technical issues in developing this technology such as proper charging, handling fine particles, safety, and the advantages and shortcomings of different process methods and configurations. Based on these analyses, potential applications such as treating pulverized coal to reduce sulfur and other pollutants for utility application and cleaning of untreated fines in coal preparation plants are identified, and the corresponding research and development needs are discussed.
- OSTI ID:
- 45122
- Report Number(s):
- CONF-930413--
- Country of Publication:
- United States
- Language:
- English
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