The cyclo-cell technique and large jigger developed under the Program has also reached advanced world level. The technical upgrading of coal burning boilers has greatly reduced the emission of NOx.

• 旋流微泡浮选柱技术和大型跳汰机达到世界先进水平，通过对燃煤锅炉的技术改造，大幅度地降低了nox的排放。