| 摘要 |
FIELD: recycling.SUBSTANCE: invention relates to processing of combustion products and can be used at thermal power plants and boilers operating on coal fuels. Process line for processing ash-slag wastes comprises a proportioning feeder of ash-slag wastes connected to a mixer tank connected to a source of a diluting medium of the supply line, a classifier of ash-slag particles, a means to discharge dewatered masses of the classified fractions of particles. Line is equipped with a recirculating tank, which is connected to the outlet of the mixer by means of a pipeline equipped with the first pump. Recirculation tank drain branch pipe is arranged at its top edge and connected with the mixer. Classifier comprises at least two coaxial cylindrical perforated shells arranged in a cylindrical housing coaxially to its axis of rotation and rigidly fixed in it. Diameter of perforation holes decreases from the inner to the outer shell. Classifier housing is made with the possibility of its rotation. Recirculation tank outlet branch pipe is arranged at its bottom and connected with the cavity of the inner shell of the centrifugal classifier, along which a perforated pipe passes connected to the water source. Classifier outlets are connected with inlet branch pipes of tanks accumulating separate fractions of ash, each of which is equipped with a drain branch pipe arranged at its top edge and connected to the inlet of a settling tank, the outlet of which by means of the second pump with the first water line is connected to the inlet of a return water tank, the outlet of which by means of the third pump with the second water line is connected with the mixer.EFFECT: technical result is expansion of range of fractionation of ash-slag wastes by the particle size, as well as reduced pollution of the environment.8 cl, 1 dwg |
