Minerals Refining Company

Metallurgical Coal


Transform the Economics of Your Operation

Extract added value from your existing product stream with little-to-no capital. We will install our separation technology as a modular unit in or adjacent to your existing metallurgical coal-preparation plant.
Our operational agreements are tailor-made to each processing facility to ensure customer profitability from Day One. Built to chemical-process safety standards, the HHS module will convert your waste stream into high-quality product suitable for blending.

The HHS Process offers several ways to extract greater value from your existing product stream.

Generate added sales tonnage. Coal in the waste stream may comprise 3 to 5% of the product stream;  capturing this coal increases the tonnage available for sale. After HHS treatment, what was once waste is a high-quality product – low ash, low moisture.

Upgrade product quality. HHS produces a higher quality product than the main plant product, increasing the selling price or perhaps avoiding penalties for moisture or ash.  For a specialty coal, it may be  produce a lower -ash, lower-moisture product that can be sold in previously inaccessible markets.

Advanced Dewatering. Mechanical dewatering processes, such as plate-and-frame filter presses, have been used to dry high-value ultrafine coal but the high equipment cost and limited moisture removal have restricted industrial applications. The HHS Process offers an economic solution for de-watering this high-value product to single digits.

Improve plant economics. Depending on the quality specifications to be  met, the ability to add very low ash and moisture  coal fines from your product stream may allow the gravity to be raised in the other processing plant circuits and improve recovery of coarser coals.

Extend slurry-pond life. The potentially recoverable coal in fine slurry typically represents 35% to 65% of the solids being pumped from the thickener to the waste impoundment. Recovering this coal as a saleable product will extend the life of the slurry pond and reduce the potential for a black water spill.

Here are the before-and-after results of seven Central Appalachian coals treated by MRC’s HHS initial pilot plant:

Location and Type of Coal Feed Ash % Product Moisture % Product Ash % Reject Ash % Combustible Recovery % Sample Type
Eastern Kentucky Mine A – PCI/Thermal 67.5 6.8 3.8 88.3 72.9 Deslime Cyclone OF
Southern WV Mine B – HV Met 53.0 6.8 3.4 84.4 79.7 Deslime Cyclone OF
Western Pennsylvania Mine C- Thermal Pitt 8 40.4 3.9 4.3 85.8 89.4 Deslime Cyclone OF
Southern WV Mine D – HV Met 53.6 3.5 3.9 88.0 84.7 Deslime Cyclone OF
Northern WV Mine E – HV Met 13.7 4.9 5.0 76.3 96.7 Screen Bowl Effluent
SW Virginia Mine F – LV Met 7.0 3.8 2.1 64.8 97.1 Screen Bowl Effluent
Southern WV Mine G – LV Met 10.7 3.8 3.1 79.4 97.7 Screen Bowl Effluent

Estimate Your Savings

Call us! We’ll run your numbers through our financial calculator for an estimate how much money you can save.