The EMS Energy Institute houses a suite of fuel preparation and processing equipment for cleaning coals, size reduction and classification of coal and biomass, dewatering of fine coal, and coal-water mixture (CWM) preparation. These facilities are used to prepare coal, biomass, or CWM samples that range in quantities from grams to barrels to tons for fundamental, applied, and demonstration-scale research and development.

The equipment ranges in size from bench-top units to large pilot-scale facilities. Historically the facilities were installed to clean coal, dewater fine coal streams, or crush, pulverize, or process coal into CWM for combustion/gasification/emissions studies. In addition, some of the facilities are used for preparing biomass samples for analysis and testing

Coal Cleaning

•    WEMCO froth flotation circuit (0.5 ton/h) that can be run as a single stage or a rougher-cleaner configuration

Size Reduction and Classification

•    Crushers from bench-top capabilities to 800 lb/h capacity

-     Bico Braun bench-type jaw crushers

-     Denver Equipment Co. pilot-scale jaw crusher (300 lb/h)

-     Energy Institute fabricated lump buster

-     American Pulverizer Co. pilot-scale roll crusher (350 lb/h)

•    Straub adjustable plate mill (15-40 lb/h)

•    Bench-top and pilot-scale pulverizers

-     Holmes Model 300 pulverizer

-     Holmes Model 501XL-S pulverizer

-     Hosaka Micron Corp. variable speed air-swept mill

-     American Pulverizer Co. Machine Number 15X9 hammermill

•    Szegari 1S Recirculating Attritor Mill (bench scale)

•    Szegari 15S Recirculating Attritor Mill (pilot scale)

•    2’x4’ continuous ball mill (125 lb/h)

•    1’x2’ continuous ball mill (15 lb/h)

•    Booth Co. Model L-8 R-25-1 twin station batch ball mills (shot or rod)

•    Bico Braun Standard Bond Work Index mill

•    Hardgrove Grindability Index mill

•    Variable speed air-swept pulverizer (350 lb/h)

•    Retsch Model ZM 200 Ultra centrifugal mill

•    Wiley Mill, Standard Model No. 3

•    Derrick Model K-18 2-stage vibratory wet screener

•    Gibson Equipment Co. Model TS-1 multi-sieve mechanical separator

•    Tyler Ro-Tap machines

•    Sonic sifter


•    High-speed, solid-bowl centrifuge (300 gal/h)

•    Denver Equipment Co. Model EE dual disc vacuum dewatering machine

•    Pneumatic slurry dewatering vessels

•    Alar pilot-scale Auto-Vac Model 200 dewatering machine

Coal-Water Mixture Preparation and Handling

•    Ribbon mixers (350 lb and 1 ton capacities)

-     J.H. Day Co. variable speed ribbon mixer

-     Munson 40 cubic foot horizontal ribbon mixer

•    Mixing tanks (100 to 1,000 gallon capacity)

•    Mixers, electric and pneumatic

•    Progressive cavity pumps

•    Double-diaphragm pumps

•    Mass flow meters