Progress Reports
PR-10: Washability Tests and Heat-content Predictions for New Mexico Coals
by R. Shantz, 1978, 16 p.
This report was prepared for the New Mexico Energy Resources Board under a contract titled "Assessment of the potential for coal preparation in New Mexico." The purpose of the project was to determine the applicability of coal-washing techniques to the high-ash, low-sulfur coals of the San Juan Basin and to assess the economic advantage of using washed coal for generating power. Additional washability data were developed and the suitability of froth flotation for cleaning the coal fines was investigated. An equation for predicting Btu content from percent of dry ash was developed.
Companies mining the high-ash and thin-bedded coals of the San Juan Basin will be interested in the results presented here. Included are data on the heat content and Btu recoveries that might be expected from a washery in the San Juan Basin; tables and figures are located at the end of the report. A technique for facilitating estimates of Btu content and percent of ash is also included. This information will be useful to coal exploration programs.
Two other papers have resulted from this Energy Resources Board contract: "Calculating heat content from ash percentages" in the May 1977 issue of Coal Mining and Processing and New Mexico Bureau of Mines and Mineral Resources Progress Report 9, Strategy for coal-washing operations in New Mexico. The present report (PR-10) includes the information presented in Coal Mining and Processing.
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New Mexico Bureau of Geology & Mineral Resources
New Mexico Institute of Mining & Technology
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Socorro, NM 87801-4796
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