ABSTRACT: Fifteen 1-ton bulk samples of Indiana coal were studied in detail by the Indiana Geological Survey in an attempt to reduce the sulfur content. Laboratory techniques of crushing, screening, and making separations based on specific gravity simulated the cleaning process used in modern industry-operated coal preparation plants. Sulfide, sulfate, organic sulfur, and total sulfur were determined for each fractional sample of coal obtained by screening and float-sink methods. Only the sulfate (about 0.1 percent of coal) and the sulfide or pyritic sulfur (0.7 to 5.4 percent of coal) cannot be reduced by this method. Although about half of the pyritic sulfur can be removed at the 80-percent recovery level, Seelyville coal (III) and Springfield coal (V) still contain, in most places, more than 3 percent sulfur; Buffaloville coal, Hymera coal (VI), and Danville coal (VIII), 2 to 3 percent; and Survant coal (IV) and Upper Block coal, 2 percent or less.



Wier, C. E., Hutchison, H. C. 1977, Reduction of sulfur in Indiana coal by washability techniques: Indiana Geological Survey Bulletin 55, 61 p., 15 fig.


You may also like:

Keywords: coal, sulfur, energy resources, Seelyville Coal Member, Springfield Coal Member, Buffaloville Coal Member, Hymera Coal Member, Danville Coal Member, sulfide, Survant Coal Member, Upper Block Coal Member, Staunton Formation, Raccoon Creek Group, Petersburg Formation, Carbondale Group, Brazil Formation, Dugger Formation, Linton Formation

Can't find what you're looking for? Feel free to contact us directly:

Indiana Geological and Water Survey
420 N. Walnut St.
Bloomington, IN 47404
812-855-7636 (phone)
812-855-2862 (fax)
IGWSinfo@indiana.edu

IGS Return Policy

  • Original sales receipt required.
  • Returns accepted within 30 days of purchase date.
  • Refund will be issued by the same method of payment as purchased.
  • Products must be returned in the same new condition as purchased.
  • Refunds on custom orders and digital products are NOT allowed.
  • Customers are responsible for paying shipping costs to return products.

Updated 8/19/2020