A CURRENT SURVEY OF POLISH DEPOSITS OF DOLOMITES APPLICABLE IN THE INDUSTRY OF REFRACTORIES

作者：Bak Boguslaw^*; Radwanek Bak Barbara; Wyszomirski Piotr

来源：Gospodarka Surowcami Mineralnymi-Mineral Resources Management, 2011, 27(1): 21-47.

• Triassic dolomites
• Devonian dolomites
• refractories
• converter dolomite
• sintered dolomite

The Polish basis of dolomites is remarkable. Their total reserves reported in the 62 deposits listed in current data bases of mineral resources amount to 1.500,000 t. However, there is a shortage of the so-called converter dolomites of high quality applicable in manufacturing of refractory materials. Such dolomites of the Triassic age have been quarried for many years in the Brudzowice and Zabkowice Slaskie 1 deposits in the Silesian-Cracow region. The deposit is perspective of this area, considering the character and properties of its dolomites. dolomites of the Nowa Wioska and Stare Gliny deposits belong into the same group although their applying as refractories seems to be disputable at the moment and would require more detailed analyses of the chemical composition and firing properties of the rocks mentioned. The reason is that the dolomites of these deposits have been reported and massively quarried up to now mainly for civil engineering (roads, buildings, etc.). Unfortunately, worsening properties of the dolomites occurring in Zelatowa, still another large and developed deposit of the region, have been excluded using these rocks in producing of refractories. Among the group of reserve converter dolomite deposits, the best rock properties have been found in four of them, i.e., Chruszezobrod, Chruszezobrod 1, Chruszezobrod 11 and Libiaz Wielki.
The survey presented indicates that there are some possibilities of including dolomites of the Winna and, to a lesser degree, Radkowice-Podwole deposits as the raw materials in manufacturing of refractories. Again, more detailed analyses or the chemical composition and petrographical development, mainly of the grain size distribution, would be required.
Dolomitic marbles of the Lower Silesia region represent a separate problem. Traditionally, they have been considered to be non-applicable in manufacturing of refractories because of too coarse grain size of these rocks. It should be stressed, however, Mat the Lower Silesian marbles occur in several varieties and among them also fine- and coarse-grained dolomites occur. Their finest and chemically purest varieties can be an interesting option in extending the basis of refractory dolomitic raw materials in Poland, although selective quarrying would be required in such a case.

• 出版日期2011