Coal is world’s most abundant fossil fuel formed from the decomposition of organic materials, plants, vegetation that accumulated in swamps to great depths. With burial, the plant material was subjected to high temperatures and pressures over millions of years. This caused physical and chemical changes in the vegetation, transforming it into peat and then into coal.
While being transformed from organic matter (peat) into coal, it underwent various stages like formation of lignite or ‘brown coal ‘, which is the lowest quality of coal, to sub bituminous to bituminous and then anthracite, which is the highest quality and hardest coal.
High-rank coals are high in carbon and therefore heat value, but low in hydrogen and oxygen. Low-rank coals are low in carbon but high in hydrogen and oxygen content. In addition to carbon, coals contain hydrogen, oxygen, nitrogen and varying amounts of sulphur.
Use of Coal
Coal has many important uses worldwide. The most significant uses are in electricity generation. Not only does coal provide electricity, it is also an essential fuel for steel and cement production. Other important users of coal include paper manufacturers, chemical and pharmaceutical industries.
Gross calorific value (adb) 6300 kcal/kg
Total moisture (ar) 14 % max
Inherent moisture (adb) 10 % max
Ash content (adb) 12 % max
Volatile matter (adb) 43.00 % max
Fixed carbon (adb) By difference
Sulphur (adb) 1.0 % max
Hard grove grind ability 40 min
Index(hgi)
Size (90% passing min) 0 û 50 mm
Reject 5900
6100 kcal/kg
15 % max
12 % max
10 % max
43 % max
By difference
1.0 % max
45-55 min
0 û 50 mm
Reject 5800
6000 kcal/kg
15 % max
12 % max
10 % max
43 % max
By difference
1.0 % max
45-55 min
0 û 50 mm
Reject 5600
5800 kcal/kg
23 % max
14 % max
8 % max
43 % max
By difference
1.0 % max
45-55 min
0 û 50 mm
Reject 5300
(type b)
5500 kcal/kg
27 % max
16 % max
5 % max
43 % max
By difference
0.5 % max
45-55 min
0 û 50 mm
Reject 5300
(type a)
5500 kcal/kg
30 % max
16 % max
6 % max
Nagaland coal is very appropriate for its use in brick kilns, steel industry etc. Specifications of good quality nagaland coal are gcv ( 7000+), ash 2.75%, moist 3.21%, vm 44.69%, fc 49.35%, sulphur 2.94%.
Assam coal is suitable for coke plants and steel and rolling mills.
The specificaions of assam coal are ash 6-9%, moist 2-2.5%, vm 40-45%, fc 47-50%, sulphur 2-2.5%. Caking index 22-25 and swelling index 4.5 .
The high quality arunachal coal is suitable for coke plants and steel industry apart from brick kilns, cement industry etc. The average analysis figures of all the available coal are: ash 5-10%, volatile matter 38 to 42%, moisture 1.8 to 2.5%, and sulphur 2 to 3.59%. The sulphur is both of organic and inorganic origin. The coal has extremely low phosphorus (0.001-0.008%). It is a highly caking coal, the caking index varying from 17 to 24 (b.S.S.). The swelling index varies from 2.5 to 4 and the calorific value is as high as 11, 970 to 13, 410 b.Th u./1b.
Our core business is sourcing, supplying and trading coal products mostly originate from indonesia.
Partnering with the leading coal producers in indonesia has been ensures the consistency of products quality and sustainable supply to deliver wide range coal products from high to low calorific for diverse industries.
Steam coal from indonesia" for kalorie 5100 kcal - 6300 kcal.
1.Payment by cash 5-4-1 / 1-4-4-1 fob barge and full lc 100% at sight by fob mv.
2.Quantity supplay 40.000 - 100.000 mt/month
With strong expertise in coal business, available with us is an extensive assortment of hard coke. This is extensively used in for different applications like metallurgical, foundry carbon raiser, reducing agents, heat-treatment, electrolytic processes etc. Moreover, this range of coke is offered in various grades and specifications. Furthermore, we offer the products at market leading prices.
