Purpose of the development: The technology of fine g rinding hard materials that can be used in the chemical, mining, metallurgy, building materials and other industries. The application of this technolo gy will significantly reduce energy consumption and improve specific productivity process without modification of grinding equipment.

Recommended application field: Chemical, mini ng, metallurgy, construction materials and other industries.

Technical characteristic: In the first stage previous roughgrinding provided mainly by large pulses striking effe ct on the working of the crushed material particles that contributes to the limit of elastic deformation of the material in an array of large particle s. In addition, the first stage pulsating type oscillations self-excite in high-speed chamber rotation, activates filling circulation. In the final fi ne grinding stage provided mostly by erasing and crushing effect of small pulses of job that contributes to plastic deformation at the surface of smal l crushed materialparticles. In addition, in the therefinal stage under extreme dynamic state of sliding layer ofgranular filling in the slow rotation of the chamber, activates crushing fillingslide circulation. The range of ball-tube mills chambers diameters – 0.05...12 m. Frequency of rotation o f the drum–2.5...150 r/min. Performance of ball-tube mills– 10-4…200t/h. Grinding fineness (residue on sieve number 008) – 5…20 %.

The development stage readiness: Ready for application

Technical and economic effect: The technology allows you to: - reduce specific energy process in the first rough grinding stage, meal by 10...40 %; - increase the productivity of the process in the first rough grinding stage, meal by 30...60 %; - reduce specific energy consumption for grinding in the final fine grinding stage , meal by 20...50 %; - reduce the cost of electricity consumption to drive large-mills, meal by 2...10 UAH per 1 ton of crushedmaterial; - increase the efficiency of grinding in mills with traditional design solutions – without additional internal chamber energy exchange devices that have low reli ability because of the rapid deterioration due to high filling abrasiveness.

Description of the development:
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Energy-saving technology of fine grinding hard materials radicall y increase the extremely low efficiency of ball-tube mills as the main equipment of large- and small scale dispersion due to a number of operational a dvantages: the possibility of a single high-performance, reliable operation, ease of use, ability to maintain functionality with significant wear, ver satility and economy. The technology is based on the concept of selective grinding energy as physical basis of a rational process that involves select ive in shape and size supply of energy to grind the material to minimize the energy consumption of destruction. The value and distribution of stress i n the bulk crushedmaterial particles optimally combined with strain rate and duration of loading. The technology is realized through multistage of gri nding process on the basis of the effects and phenomena’s of mills intrachamber filling behavior as disintegration factorintensification: averaging rh eological properties of granular medium in a rotating chamber, pulsating type self-oscillations and origin of the two extreme speed dynamic states of filling. Stages of the process for previous rough, intermediate and final fine grinding is done by organizing rational modes of filling mode of motion variations in how management actions in crushing process, the values of parameters: rotationalspeed, degree of chamber filling, degree of crushed mat erial particles filling in gaps between the crushing bodies,crushing body relative average size,crushing body shape and chamber surface frictional pro perties.

Information about newness of the development:
there are Ukrainian patents -- 5 items

corresponds technical description
Ready for implementation

Possibility of transfer abroad:
Licence's sale
Technological document's sale
Combinated reduction to industrial level

Photo

Country Ukraine

For additional information turn to:
E-mail: gal@uintei.kiev.ua