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Title: Screening technology reduces ash in spiral circuits

Abstract

In 2006, the James River Coal Co. selected the Stack Sizer to remove the minus 100 mesh high ash clay fraction from the clean coal spiral product circuits at the McCoy-Elkhorn Bevins Branch prep plant and at the Blue Diamond Leatherwood prep plant in Kentucky. The Stack Sizer is a multi-deck, high-frequency vibrating screen capable of separations as fine as 75 microns when fitted with Derrick Corp.'s patented high open area urethane screen panels. Full-scale lab tests and more than 10 months of continuous production have confirmed that the Stack Sizer fitted with Derrick 100 micron urethane screen panels consistently produces a clean coal fraction that ranges from 8 to 10% ash. Currently, each five-deck Stack Sizer operating at the Bevins Branch and Leatherwood prep plants is producing approximately 33 tons per hour of clean coal containing about 9% ash. This represents a clean coal yield of about 75% and an ash reduction of about 11% from the feed slurry. 3 figs. 2 tabs.

Authors:
 [1]
  1. Derrick Corp., Buffalo, NY (United States)
Publication Date:
OSTI Identifier:
20905971
Resource Type:
Journal Article
Resource Relation:
Journal Name: Coal Age; Journal Volume: 112; Journal Issue: 5; Other Information: pbrodzik@derrickcorp.com
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; ASH CONTENT; DEASHING; SCREENING; SPIRAL CONFIGURATION; SCREENS; URETHANE; COAL PREPARATION; SEPARATION PROCESSES; COAL; DESIGN; FUEL SLURRIES; NEW YORK; USA; PARTICLE SIZE; KENTUCKY; MECHANICAL VIBRATIONS

Citation Formats

Brodzik, P. Screening technology reduces ash in spiral circuits. United States: N. p., 2007. Web.
Brodzik, P. Screening technology reduces ash in spiral circuits. United States.
Brodzik, P. Tue . "Screening technology reduces ash in spiral circuits". United States. doi:.
@article{osti_20905971,
title = {Screening technology reduces ash in spiral circuits},
author = {Brodzik, P.},
abstractNote = {In 2006, the James River Coal Co. selected the Stack Sizer to remove the minus 100 mesh high ash clay fraction from the clean coal spiral product circuits at the McCoy-Elkhorn Bevins Branch prep plant and at the Blue Diamond Leatherwood prep plant in Kentucky. The Stack Sizer is a multi-deck, high-frequency vibrating screen capable of separations as fine as 75 microns when fitted with Derrick Corp.'s patented high open area urethane screen panels. Full-scale lab tests and more than 10 months of continuous production have confirmed that the Stack Sizer fitted with Derrick 100 micron urethane screen panels consistently produces a clean coal fraction that ranges from 8 to 10% ash. Currently, each five-deck Stack Sizer operating at the Bevins Branch and Leatherwood prep plants is producing approximately 33 tons per hour of clean coal containing about 9% ash. This represents a clean coal yield of about 75% and an ash reduction of about 11% from the feed slurry. 3 figs. 2 tabs.},
doi = {},
journal = {Coal Age},
number = 5,
volume = 112,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}
  • The article describes the Derrick Corporation's Stack Sizer{trademark} technology for high capacity fine wet cleaning with long-lasting high open-area urethane screen panels. After field trials, a Stack Sizer fitted with a 100-micron urethane panel is currently processing approximately 40 stph of clean coal spiral product having about 20% ash at McCoy-Elkhorn's Bevin Branch coal preparation plant in Kentucky, USA. Product yield is about 32.5 short tons per hour with 10% ash. The material is then fed to screen bowl centrifuges for further processing. At Blue Diamond Coal's Leatherwood preparation plant similar Stacker Sizers are achieving the same results. 2 figs.,more » 3 tabs., 2 photo.« less
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