Big efforts are being made to recycle industrial waste at thermal power stations across the country.

The power plants need large numbers of insulating bricks for the overhaul and medium-scale repair of boilers.

Therefore, technicians have developed and introduced a technology for extracting white slag from waste from the power stations and producing quality insulating bricks with it.

The Pyongyang Thermal Power Complex is leading others in the effort.

The complex turns out tens of thousands of insulating bricks every month.

The brick remarkably increases the thermal efficiency of boilers as its infrared reflectivity is over 80 percent and thermal conductivity coefficient is very small.

The application of the bricks to boiler No. 9 resulted in a marked enhancement of its efficiency and a sharp reduction in power and fuel consumption.

The complex not only produces enough insulating bricks for repair but also sends them to other units.

The employees of the complex are now working in a planned way to build up the production capacity and upgrade the level of modernization in order to keep production going at a higher level at the lagging material production facility.

Other units are drawing on its experience.

The Pukchang Thermal Power Complex rationally established a process for processing white slag. Meanwhile, it speeded up the manufacture of necessary facilities and devices to make insulating bricks in a short time and measure relevant technical indexes in the field conditions. On the basis of this, it is making preparations for mass-producing the bricks.

The Sunchon Thermal Power Station laid a foundation for producing quality lagging materials with waste by manufacturing such facilities as moulding machine and briskly exchanging experience.

By Kim Il Jin PT