economy

The State Academy of Sciences developed the technologies for producing reduced iron and synthetic fuel oil based on coal gasification in a Korean way.

The newly developed technologies are the research achievements of great national significance made on the basis of a Korean-style pressurized airflow fine coal gasification technology whose advantages and technical and economic effectiveness have been proved in theory and practice.

In general, the technology of producing reduced iron based on coal gasification, one of coke-free iron-making methods, is an advanced iron-making technology of producing reduced iron, a raw material for steel-making, by directly reducing the oxidizing roasting pellets charged in a vertical reduction furnace with coal gas at a temperature lower than the melting temperature of iron.

The technology of producing reduced iron based on coal gasification-vertical reduction furnace, newly developed by the State Academy of Sciences, is an energy-saving iron-making technology which can lower production costs for the much longer life and less energy consumption of the vertical reduction furnace, though it requires higher initial investment than other coke-free iron-making processes.

Meanwhile, the technology of producing synthetic fuel oil based on coal gasification is a highly profitable method capable of markedly reducing coal consumption per ton of synthetic fuel oil as compared to previously.

The State Academy of Sciences made steady efforts to research and develop the coal gasification technology in a Korean way and introduce it into reality during the five-year plan. After succeeding in developing in a Korean way last year the pressurized airflow fine coal gasification technology, which had been monopolized by only a few countries, in close cooperation with different research units, it continuously intensified the research to determine the industrialization indices.

And it designed and built the processes for trial production of reduced iron and synthetic fuel oil, which use coal gas from the pressurized airflow fine coal gasification process, in a short span of time and established automatic control systems in them.

Scientists succeeded in the trial run of those processes and made trial steel products of various specifications from reduced iron in the first half of the year.