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Mining and preparation of hard coal in Poland and Vietnam

Mijał W., Nguyen N. P., Nguyen H. S.

Przegląd Górniczy

2018

T. 74, nr 4

31--36

This paper describes issues related to the hard coal mining sector and coal processing in Poland and Vietnam. In Poland, there are three important coal regions: Lublin Coal Basin (LZW), Upper Silesian Coal Basin (GZW) and Lower Silesian Coal Basin (DZW). In Vietnam, the main coal basins are Quang Ninh and Red River Delta. The Polish coal industry is currently in the phase of transformations and restructuring. In 2017, the restructuring program was constantly implemented. This program included a number of changes in the ownership structure and structure of existing and newly established companies. Vietnam has one large company, VINACOMIN, which is 100% state-controlled. The final part of the paper describes a simple preliminary coal enrichment system in mining plants in Vietnam, as well as coal processing schemes in Poland and Vietnam. The summary is a description of future plans for both coal enrichment systems discussed in his paper.

Artykuł porusza kwestie związane z sektorem wydobywczym węgla kamiennego oraz jego przeróbki w Polsce oraz Wietnamie.. Polska posiada trzy ważne zagłębia węgla kamiennego: Lubelskie Zagłębie Węglowe (LZW), Górnośląskie Zagłębie Węglowe (GZW) i Dolnośląskie Zagłębie Węglowe (DZW). W Wietnamie głównymi zagłębiami węgla są Quang Ninh i Red River Delta etc.. Polski przemysł węglowy aktualnie znajduje się w fazie przeobrażeń i procesu restrukturyzacji. W 2017 program restrukturyzacyjny był ciągle wdrażany w życie. Program ten zawierał szereg zmian w strukturze właścicielskiej oraz strukturze pracy istniejących spółek oraz nowo powstałych. Wietnam posiada jedną wielką spółkę, jaką jest firma VINACOMIN, która w 100% zależna jest od polityki państwa. W końcowej części artykułu zostanie omówiony prosty, wstępny system wzbogacania węgla w Wietnamie przy zakładach górniczych, a także schematy przeróbki węgla w Polsce i Wietnamie. Podsumowaniem będzie opisanie planów na przyszłość dla obu omówionych systemów wzbogacania węgla.

Influence of geologic and economic parameters on the (e)CBM-development in the Campine Basin (Belgium)

Van Tongeren P., Dreesen R., Laenen B., Dusar M.

Polish Geological Institute Special Papers

2002

Vol. 7

271-280

The Belgian Campine Basin is part of a large paralic north-western coal basin of Carboniferous age, which also extends northwards and eastwards into the Netherlands and Germany. The Westphalian coal-bearing deposits are disconformably covered by Late Palaeozoic or Mesozoic strata and generally show a moderate dip to the north or north-east. An important transpressional fault zone of Palaeozoic age divides the basin into western and eastern sub-basins. During the Carboniferous, syntectonic differences in palaeo-subsidence caused remarkable differences in the burial history and sedimentological styles of these sub-basins and consequently, in their peat and final coal formation, its setting and CBM-potential.Large coal reserves still remain The Belgian Campine Basin is part of a large paralic north-western coal basin of Carboniferous age, which also extends northwards and eastwards into the Netherlands and Germany. The Westphalian coal-bearing deposits are disconformably covered by Late Palaeozoic or Mesozoic strata and generally show a moderate dip to the north or north-east. An important transpressional fault zone of Palaeozoic age divides the basin into western and eastern sub-basins. During the Carboniferous, syntectonic differences in palaeo-subsidence caused remarkable differences in the burial history and sedimentological styles of these sub-basins and consequently, in their peat and final coal formation, its setting and CBM-potential.Large coal reserves still remain in the Campine basin at relatively shallow depths (above 1500 m). Based on the distribution of these coal reserves and their actual rank, an overall CBM-content for the complete basin, as well as for specific anomalous zones within the basin, has been calculated by using an empirically determined (mining) rank / gas relationship. In this manner, six (6) areas have been established in which the gas concentration is significantly (5 times) above a set general threshold value. Together they represent a significant, minimal producible (E)nhanced CBM "target-volume" of about 53 x 109 m3 of methane. The various target areas demand different approaches in any (E)CBM development. In the southern parts of both sub-basins, the remaining changes in porosity/permeability and stress conditions of the rocks, caused by the former mining activities, have to be included into the (E)CBM-development schemes. More towards the north and north-east, any use of preserved coal mining influences is simply not possible. Here, both the sedimentological and structural setting of coals will determine the predominant geologic (E)CBM-development factors.Possibilities for ECBM-production by CO2, N2 or even "raw" flue gases are largely present within or very close to the most prolific CBM-areas. Gas-pipelines and other infrastructure needed for (E)CBM-development are present in the basin, too. The basin is situated within a low to moderately populated part of the country, which is actually rapidly economically expanding. This certifies a steadily increasing gas-consumer market in the next decades.