Pyongyang, May 29 (KCNA) -- The Jangsan Mine in the DPRK succeeded in the production of high-quality chamotte firebricks by large-scale tunnel calcination.

The newly established high-quality chamotte firebrick production line is completely based on the country's technology, equipment and raw materials.

The high-quality chamotte firebricks have been introduced into the Hwanghae Iron and Steel Complex and other units. According to it, they helped increase the repair cycle of kiln than before.

The high-quality chamotte firebricks are applicable not only to the field of metallurgical industry but also to the field of chemical industry and other units operating furnace.

Not content with this success, the mine set a goal of making new refractory by its own efforts and puts spurs to technological innovation. -0-