economy

As the upward trend of the national economy continues, the demand for coal is on a constant rise.

In line with this, the metallurgical, chemical and electric-power industries and other economic sectors have further increased the development potential of the national economy by lowering the norm of coal consumption as much as possible.

The Kim Chaek Iron and Steel Complex has run the pig iron production process on a more scientific and technological way and improved the quality indices of the fireproof material to lengthen the repair cycle of blast furnaces two to three times, thus saving thousands of tons of coal a year.

The Chongjin Steel Works established an anthracite granulation process and introduced a method of using seawater effective in accelerating combustion and hardening, thereby ensuring production at a high level while lowering the norm of coal consumption per unit.

The Hungnam Fertilizer Complex has actively introduced a method of lowering the coal consumption norm. Even a 1 percent rise in effective gas content at the gas generator workshop means saving tens of thousands of tons of coal a year. And a large quantity of coal will be saved every year, if heat efficiency is enhanced by introducing advanced technology into boiler pipes.

The Pukchang Thermal Power Complex has improved the performance of thermal power generating equipment and converted the previous control system into a more advanced distributed control system, thereby saving a great deal of coal while producing hundreds of thousands of kWh of more electricity every day as compared to previously.

Other thermal power stations across the country have steadily lowered the coal consumption norms by conducting a positive mass technical innovation movement for constantly updating technical and economic indices such as heat efficiency, combustion efficiency and turbine efficiency.