However, attempts to smelt iron using mixtures of anthracite and bituminous coal
and coke produced uneven results and little success.
The present investigation is an experimental study on the samples of oil shale semi-coke, bituminous coal
and their blends on TGA apparatus under non-isothermal conditions.
underground mining 230.4 235.0 230.3
For example, part of the mold was filled with a high-volatile bituminous coal
, and the balance filled with a low-volatile bituminous coal
C6 Energy develops systems to improve the environment by converting waste materials and bituminous coal
to produce energy and other usable products.
For the research of Al-complexes, the following leaches and residues were used: firstly, the leaches and residues from the bituminous coal
from the Czech part of the Upper Silesian Basin (Ostrava-Karvina Mining District, the Dukla mine); further, the leaches and residues from fractions (separates) of this coal.
Through the project, the company aims to raise the heat value of brown coal 50 percent to the same level as high-grade bituminous coal
, while making it less combustible, Kobe Steel said.
On the other hand, high seacoal (highly volatile bituminous coal
) levels in the molding sand seem to lessen the problem.
Consumption of coal, with Venezuela having 479m tons of anthracite and bituminous coal
reserves, is negligible.
The call for such a device was answered by a product developed by a research team at Rupprecht & Patashnick, Albany, N.Y., and Jon Volkwein at the CDC--NIOSH, Pittsburgh, Pa., along with other researchers at the Bituminous Coal
Operators' Assn., Washington, D.C., United Mine Workers of America, Fairfax, Va., and National Mining Assn., Washington, D.C.
is the largest contributor to its sales earning both at home and abroad.