scholarly journals Total Sulfur and Ash Yield of Tanjung Formation Coal in Sekako, Barito Basin, Central Kalimantan: Implication of Depositional Process

2019 ◽  
Vol 4 (2) ◽  
pp. 82
Author(s):  
Beny Wiranata ◽  
Hendra Amijaya ◽  
Ferian Anggara ◽  
Agung Rizki Perdana ◽  
Oyinta Fatma Isnadiyati ◽  
...  
Keyword(s):  
Sulfur Content ◽  
Coal Sample ◽  
Sea Water ◽  
Total Sulfur ◽  
Parent Plant ◽  
Total Sulfur Content ◽  
Plant Materials ◽  
Central Kalimantan ◽  
Freshwater Swamp ◽  
Depositional Process

Tanjung Formation is one of the major coal-bearing deposit in the Barito Basin, Central Kalimantan. The distribution of total sulfur and ash yield in coal is closely related to the depositional environment. This study was to determine the total sulfur and ash yield and the interpretation of the dynamics of depositional process. Coal seam A and B generally have low to medium ash yield 2.82 to 9.23 (wt.%, db) and low total sulfur content of <1 (wt.%, db), except for the 6PLY1 coal sample which has total sulfur content that relatively high at 1.55 (wt.%, db). Coal samples 5PLY1A, 5PLY1B, 5PLY3, 5PLY5, 6PLY2, 6PLY4, 6PLY5, 6PLY7, and 6PLY9 which have low to medium ash yield and low total sulfur content <1% (wt.%, db) are formed in the topogeneous mire (freshwater swamp) in a fluvial environment. The total sulfur content was interpreted to be derived mainly from the parent plant materials. Meanwhile, the 6PLY1 coal sample which has an ash yield of 5.83 (wt.%, db) and total sulfur content of 1.55 (wt.%, db) formed in topogeneous mire in an environment that is invaded by sea water, and the total sulfur content were interpreted coming from the parent plant materials and the effect of seawater invasion which is rich in sulfate (SO4) compounds. It is also supported by the occurrence of syngenetic mineral content (framboidal pyrite) and epigenetic pyrite of 1.23 (vol.%).

Desulfurization Experimental Study on Flotation for High Sulfur Coal from Liupanshui, Guizhou Province, China

2015 ◽  
Vol 1092-1093 ◽  
pp. 825-830
Author(s):  
Yu Yang ◽  
Luo Yang ◽  
Peng Fei Hu ◽  
Gai Mei Ren
Keyword(s):  
Sulfur Content ◽  
Coal Sample ◽  
Pulp Density ◽  
Guizhou Province ◽  
Total Sulfur ◽  
Oil Consumption ◽  
Total Sulfur Content ◽  
Desulfurization Rate ◽  
Inorganic Sulfur ◽  
Main Component

The total sulfur rate of the coal sample was 4.973%, the inorganic sulfur content was more than 60%, which was the main component in the coal sample. The effect of grinding fineness, flotation pulp density, collector and frother on coal flotation desulfurization were investigated in this paper to remove the inorganic sulfur. The results showed that it reached to the optimum desulfurization rate 54.7% when the optimum grinding fineness was 39.20% -200 mesh rate, pulp concentration was 80 g/L, kerosene consumption was 1.4 kg/t, 2#oil loading was 100 g/t, and the total sulfur content reduced to 2.72%. The optimized flotation condition determined by orthogonal experiments was as follow: pulp density for 60 g/L, kerosene dosage of 1.4 kg/t, 2#oil consumption of 100 g/t. In this case, total sulfur content reduced to 2.19%, the total desulfurization rate and the inorganic desulfurization rate were 55.96% and 92.89%, respectively.

Comparison of the Bromine and Nitric Acid Methods of Estimating Sulfur in Acetone Extracts

1947 ◽  
Vol 20 (1) ◽  
pp. 315-319 ◽  
Author(s):  
J. F. Morley ◽  
J. R. Scott
Keyword(s):  
Nitric Acid ◽  
Sulfur Content ◽  
Elementary Sulfur ◽  
Total Sulfur ◽  
Total Sulfur Content ◽  
Acid Method ◽  
The Difference ◽  
The One ◽  
Acetone Extracts ◽  
Free Sulfur

Abstract From the experiments described, it appears that neither the bromine method nor the nitric acid method is perfectly satisfactory, for the following reasons. (1) Neither method gives the true free sulfur in rubbers containing sulfur-bearing accelerators, as these cause positive errors of anything up to 0.2–0.3 per cent. (2) The nitric acid method does not give the true free sulfur in rubbers, without sulfur-bearing accelerators, because the result includes some of the sulfur combined with the rubber “resins” the tests do not show definitely whether this applies also to the bromine method. (3) Neither method gives the total sulfur in the acetone extract, since some of the sulfur combined with the “resins” is not included in the result; the presence of certain sulfur-bearing accelerators increases the error. The statement previously referred to (loc. cit.), that the bromine method approximates more nearly to the elementary sulfur content and the nitric acid method more nearly to the total sulfur content of the extract, appears to be a correct generalization. In most cases, however, the difference between the results obtained by the two methods would be less than 0.1 per cent. In respect of simplicity and rapidity of working, the bromine method has the advantage over the nitric acid method, and therefore in all ordinary circumstances is the one to be recommended.

Correlation for the Total Sulfur Content in Char after Devolatilization

2006 ◽  
Vol 20 (1) ◽  
pp. 133-137 ◽  
Author(s):  
Vasilije Manovic ◽  
Borislav Grubor
Keyword(s):  
Sulfur Content ◽  
Total Sulfur ◽  
Total Sulfur Content
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