In-plant testing of microbubble column flotation
A project to evaluate the performance of the Virginia Tech Microbubble Column Flotation (MCF) process in an operating coal preparation plant was continued during this past quarter. The project is concerned with the collection of process operating data using a 30-inch diameter column, and using these data to scale-up to a prototype, full-scale plant column. The work is being carried out at the Marrowbone Preparation Plant owned by the Shell Mining Corporation. Work during the past reported period primarily concentrated on the completion of a parametric study to evaluate the performance of the 30-inch diameter column. The preliminary results obtained from the parametric study suggest that higher gas flow rates and frother additions appear to have a beneficial effect on separation efficiency. However, under these conditions, a larger wash water flow rate was necessary to offset the increased flow of feed water to the product stream. The parametric testing results indicated that the height of the stabilized froth zone had only a limited impact on the separation efficiency, except under conditions of high feed rates. A more detailed analysis of the response surface data is currently under way. Work in other areas (Task 2.5 - Control systems and Task 3.3 - Column Testing) is continuing, but has progressed at a slower pace than originally anticipated. The appendix contains data on energy recovery, product ash content, sulfur rejection, and separation efficiency. 32 figs., 5 tabs.
- Research Organization:
- Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (USA). Dept. of Mining and Minerals Engineering
- Sponsoring Organization:
- DOE/FE
- DOE Contract Number:
- AC22-89PC89909
- OSTI ID:
- 6204538
- Report Number(s):
- DOE/PC/89909-T3; ON: DE91005524
- Country of Publication:
- United States
- Language:
- English
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In-plant testing of microbubble column flotation
In-plant testing of microbubble column flotation
Related Subjects
COAL
FLOTATION
SEPARATION EQUIPMENT
PERFORMANCE TESTING
AERATION
ASH CONTENT
CALORIFIC VALUE
COAL PREPARATION
DATA
DATA ACQUISITION
DATA ANALYSIS
DEASHING
DESULFURIZATION
EFFICIENCY
ENERGY RECOVERY
FLOW RATE
GAS FLOW
OPERATION
PARAMETRIC ANALYSIS
PROGRESS REPORT
SULFUR CONTENT
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COMBUSTION PROPERTIES
DOCUMENT TYPES
ENERGY SOURCES
FLUID FLOW
FOSSIL FUELS
FUELS
INFORMATION
MATERIALS
RECOVERY
SEPARATION PROCESSES
TESTING
010300* - Coal
Lignite
& Peat- Preparation- (1987-)