Maliy pr. V. O., 62/2, liter A, St. Petersburg, Russian Federation, 199178

Disc grinders

Disc grinders are designed for comminution of samples of bulk materials to a fine-grained state.

In disc grinders, comminution occurs by means of abrasion – simultaneous compressive and shear strain of material particles between fixed and moving discs.

The grain size of the comminuted product is regulated by the gaps between the discs (openings) and the physical properties of the material.

The Disc grinder DG 65 is designed for comminution of small samples weighing up to 1.0 kg for analytical studies with strict requirements relating to sample purity: the sample is not contaminated by working parts of the grinder.

The Disc grinder DG 175М is a tabletop model of the DG 175. In addition to the reduced overall dimensions of the grinder, the method for adjusting the gap between the discs has been changed. This makes it possible to perform the adjustment while the electric motor is operating.

The Disc grinder DG 200 is a more powerful model of the laboratory-class equipment. It can be used for comminution of small samples weighing up to 3 kg, as well as for continuous comminution, by outfitting it with 1.8L or 10L receiving containers, as well as Feeders VF 1 or VF 2.

The Disc grinder DG 250 is high-power equipment designed for busy laboratories or small production facilities.

DG  65

DG  175М

DG 175

DG 200

DG  250

Technological parameters

Average product particle size at minimum gap, mm 30-40 40-50 50-70
Product particle size at minimum gap, mm 90%<50 90%<71 90%<100
Maximum initial material grain size, mm* 3 10
Mohs hardness of comminuted material, up to 8 8** 7
Output, kg/hour* 1-5 5-100 10-150 15-200 20-250
Technical parameters
Hopper loading door dimensions, mm Ø50 80х165 95х185 95х185
Grinder loading door dimensions, mm Ø11 11,5хØ32
Discharge slot adjustment range, mm 0,05-2,0 0,07-5,0 0,1-5,0
50 Hz supply voltage, V 220 380
Electric motor power, kW 0,37 2,2 4
Disc rotation speed, rpm 3000 1500
Gross/usable capacity of the collecting container, l 0,5/0,3 1,8/1,2 -
Gross/usable capacity of the collecting tank, l - - 12/8
Overall dimensions (Length x Width x Height), mm 350х225х300 625х375х485 630х410х925 930х410х935
Weight/weight with control panel, kg 21/26 83/- -/140 -/165
Discs material – silicon carbide/iron/steel/iron with tungsten carbide inserts SiC/-/-/-

-/EN-GJN-HV600 (XCr14)/X20Cr13/EN-GJN-HV600 (XCr14) + tungsten carbide

-/EN-GJN-HV600 (XCr14)/GX120Mn13/EN-GJN-HV600 (XCr14) + tungsten carbide -/EN-GJN-HV600 (XCr14)/-/-
Discs hardness – silicon carbide/iron/steel/iron with tungsten carbide inserts 85-90 HRA/-/-/- -/52-55 HRC/ 31-32 HRC/ inserts 1180-1280 HV -/52-55 HRC/-/-
Compatible control panel PCP1-03 CCPB built-in control panel MCP3-04 MCP3-06

The maximum allowable size of the initial material depends on its physical properties.

**If discs with tungsten carbide inserts are used.

Advantages of VIBROTECHNIK Disc grinders:

  • Use of discs with two types of working surface: wedge-shaped (for preliminary comminution) and flat (for regrinding);
  • Positioning of discs strictly parallel to one another by adjusting the position of the fixed disc;
  • Discs are made of wear-resistant materials: carborundum, high-strength iron or manganese steel;
  • Increased disc service life (DG 175М, DG 200 and DG 250) due to:
    • Ability to rotate the discs 180 degrees;
    • Interchangeable moving and fixed discs;
    • Reversible operation.
  • Safe operation of the grinders is ensured by:
    • Equipping the grinders with control panels;
    • Limit microswitches that prevent grinders from being started with the covers or grinding chambers open.
  • Openings for monitoring the gap between the discs are provided in DG 175М, DG 200 and DG 250 stationary chambers.

Applications: ferroalloys, ore, granite, marble, limestone, coal, coke, slag, diatomaceous earth, silica gel, automotive catalyst, glass, salt.

Industries: mining, metallurgy, construction, chemical.