A Study of the Effects of Methanol and Water on the Friability of Lignite
Abstract
A study of the effects of methanol and water on the friability of lignite was made in an effort to quantify the extent of the effects and compare the utility of the two liquids. The friability of the lignite will be an important factor in the design of future coal processing plants, because the capacity and energy requirements of size reduction facilities is dependent on this quantity.
Studies of the dry grinding characteristics of various lignite samples was made by using a modified form of the Hardgrove Grindability Test. In addition, the wet grinding and blending of lignite was studied by preparing methacoal and water slurries in a Waring blender and measuring the power consumption and the degree of size reduction. Qualitative observations were made concerning the reaction between dried lignite and methanol, and also the qualities of methacoal slurries compared to water slurries.
The results were inconclusive because the limited number of measurements required a cautious interpretation of results. The friability of lignite, as measured by dry grinding, was sometimes enhanced by methanol, but some tests indicated a decrease. The blending tests showed that the degree of size reduction was approximately the same whether methanol or water slurries were blended. However, the power requirements for blending methacoal decreased, over a period of time, to a level lower than that required for blending an equivalent water slurry. More extensive study along the lines described herein was recommended to increase the reliability of results
Description
Program year: 1978/1979Digitized from print original stored in HDR
Subject
lignitemethanol
water
friability
coal processing plants
methacoal slurries
grinding characteristics
Citation
Matthews, Michael Anthony (1979). A Study of the Effects of Methanol and Water on the Friability of Lignite. University Undergraduate Fellow. Available electronically from https : / /hdl .handle .net /1969 .1 /CAPSTONE -CarrollB _1982.