scholarly journals Fine coal fractionation using a magnetohydrostatic separation process CRADA 91-003. Final report

1992 ◽  
Author(s):  
Heechan Cho ◽  
R. P. Killmeyer
Keyword(s):  
Separation Process ◽  
Final Report ◽  
Fine Coal

scholarly journals The Effect of the Characteristics of the Partition Plate Unit on the Separating Process of −6 mm Fine Coal in the Compound Dry Separator

Minerals ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 215 ◽  
Author(s):  
Chen ◽  
Wang ◽  
Luo ◽  
Zhao ◽  
Lv ◽  
...  
Keyword(s):  
Density Distribution ◽  
Size Fraction ◽  
Industrial Applications ◽  
Average Density ◽  
Ash Content ◽  
Separation Process ◽  
Contour Map ◽  
Separation Technology ◽  
Fine Coal ◽  
Separation Results

Although compound dry separation technology has been applied to industrial applications for +6 mm size fraction of coal separation, the technology has not been widely applied in the separation of fine coal (−6 mm). In this study, the effect of the partition plate unit characteristics on both the average density of particles in the bed uniformly and the final separation results in a fine coal separation process were studied. According to the results, the standard deviations of the corresponding density distribution were 0.08, 0.14, and 0.07 when the height of the partition plate was 2.5 cm, the partition plate angle was 35°, and the distance from the apex of partition plate on the backplane, was 12 cm, respectively, which were the lowest values at the same level. These results showed that the average density of particles in the bed was uniformly, and its corresponding density distribution contour map was more regular. When the amplitude was 2.8 mm, the frequency was 29 Hz, the height of the partition plate was 2.5 cm, the partition plate angle was 35°, and the distance from the apex of the partition plate to the backplane was 12 cm; as a result, the E value was 0.115 g/cm3, the yield of the concentrate was 69.24%, the ash content was 12.52%, and the separation effect was better. The characteristics of the partition plate unit have an important effect on the separating process of −6 mm fine coal in the compound dry separator.

Experiment and Research on the Separation Process of High Ash and Difficult Floatable Fine Coal

2010 ◽  
Vol 113-116 ◽  
pp. 1565-1571
Author(s):  
Xia Hui Gui ◽  
Jiong Tian Liu ◽  
Xiu Xiang Tao ◽  
Yi Jun Cao ◽  
Yong Tian Wang
Keyword(s):  
Separation Process ◽  
Quality Characteristic ◽  
Gangue Mineral ◽  
Flotation Process ◽  
Flotation Machine ◽  
Flotation Column ◽  
Fine Coal ◽  
Accumulation Index ◽  
Micro Bubble ◽  
Separation Equipment

As for certain high ash and difficult floatable fine coal, the coal quality characteristic is the frangible and easyly-clayed main gangue mineral kaolinite, and the high content of fine-grade and intermediate density grade materials. In order to reduce tiny slimes pollution and to increase quality and recovery rate of concentrate, we used cyclonic-static micro-bubble flotation column and XFD-3 flotation machine to experiment on separation process. It probed into re-concentration after grinding rough refined coal, classified flotation process and selective agglomeration-flotation process these three technical processes. The comparison of flotation machine test result showed that, using the flotation column as separation equipment, process of re-concentration after grinding rough refined coal could obtain the best refined coal accumulation index. When medicaments dosage is kerosene 800 g/t, GF 300 g/t, and sodium hexametaphosphate 1500g/t, refined coal production rate of flotation column is 59.47% and ash content is 10.63%.

scholarly journals RADIUM-BARIUM SEPARATION PROCESS. 2. CHROMATE FRACTIONATION PROCEDURES: FINAL REPORT

1951 ◽  
Author(s):  
M.L. Salutsky ◽  
J.G. Stites ◽  
E.F. Joy ◽  
A.W. Martin ◽  
J.H. Jr. Payne ◽  
...  
Keyword(s):  
Separation Process ◽  
Final Report
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