Macerals are the microscopically recognizable individual constituents of coal and depending on their quantitative participation and their association, they control the chemical, physical and technological properties of a coal of a given rank. In this new classification (ICCP system 1994) the maceral group has been revised from its previous classific…
Coal, a relatively low-cost fuel that produces significant amounts of pollutants, supplies 18.7% of the Korean economy's energy needs. The total amount of coal consumed in 1995 was 43;6 million tons, and the demand is forecast to increase
3.5% annually by 2010. Of the 43.6 million tons, only 5.5 million tons are domest…
In the past, conventional reflection seismic techniques were not very successful when applied to typical mining exploration:They lacked resolution in the shallow range or were not cost effective. By combining a light earth tamper source, special geophones and field procedures, a stacking process of the returning seismic events using a microprocessor…
52 tons of Indonesian briquetted coke were put through a small blast furnace of friedrichshutte at Herdcorf with the aim of determining the suitability of this coke for metallurgical purposes and thus for the blast furnace. The small blast furnace has a herath diameter of 1.8 m and normally puts through 50 - 60 tons of coke per day corresponing to a…
Mudstones (interbedded clay, silt and very fine grained quartz sandstone) and coal beds were encountered as intercalations in the quartz sandstone beds. Its bedding plane could rather well be measured, morover on the contact rocks. Brown to black clays (carbonaceous clays/shales)nwere found under the coal beds.
These proceedings are a compilation of papers presented at the inaugural APEC Coal Trade and Investment Liberalisation and Facilitation Workshop held in Jakarta, Indonesia on 5 and 6 August 1997. The Workshop Series is being organised by the Australian Department of Primary Industry and Energy (OPIE) and the Japanese Commi…
Coalbed Methane (CBM) disebut sebagai gas unkonvensional, yang jumlah dan keberadaannya relatif lebih besar dibandingkan sumber daya minyak dan gas bumi. Gas metana tersebut memainkan peranan yang penting dalam bauran energi (Energy Mix) Nasional sebagai sumber energi andalan dan bahan bakar fosil yang bersih. Ke depan, CBM sebagai energi baru…
Kegiatan penelitian di daerah Permis, Kepulauan Bangka Belitung difokuskan pada kehadiran intrusi batuan granit pada sistem panas bumi daerah Permis. Penelitian ini bertujuan untuk mengetahui karakteristik granit dan hubungannya terhadap pembentukan sistem panas bumi Daerah Permis. Metode yang digunakan dalam penelitian ini berupa pengamatan dan pen…
Endapan lempung Formasi Muaraenim di daerah Kabupaten Ogan Komering Ulu Selatan terdapat sebagai overburden di bagian atas lapisan batubara, dan sebagai interburden di antara dua lapisan batubara. Formasi Ranau terdiri dari tuf riolitan, tuf batuapung, tuf padu dengan sisipan batulempung berkarbon.
Berdasarkan evaluasi hasil pengujian awal melalui p…
Coal consumption in Japan is expected to increase. Since a major portion of the domestic coal consumption relies on overseas supply sources, it is extremely important for us to secure a stable supply of coal from abroad. For this reason, the participation of Japanese coal mines m overseas coal development projects and…