Studies on the dielectric properties of raw and beneficiated coal

✍ Scribed by Mukhdeo; G. Joshi; D. Guha; A.R. Chetal

• Publisher: Elsevier Science
• Year: 1980
• Tongue: English
• Weight: 354 KB
• Volume: 59
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(80)90020-4

✦ Synopsis

The dielectric properties of both raw and beneficiated fractions of a Jharia coal sample were measured in the frequency range 100 kHZ-12 MHZ. It has been observed that as ash yield increases, dielectric constant also increases. An empirical relation A = ae3 + b has been proposed, where A is the ash yield (wt %), E is intrinsic dielectric constant and a and b are constants. However, no correlation was observed between ash yield and loss-tangent. All samples showed a loss-tangent peak at z4 MHz.