Industrial mixer KB2PC01300DD MC² — MIXER FOR RUBBER TYRE COMPOUND ADDITIVES
Industry: Rubber

MIXER FOR RUBBER TYRE COMPOUND ADDITIVES

KB2PC01300DD

The Challenge

For a new plant producing powder additives for rubber compounds, we were commissioned to manufacture a 1,300-litre batch paddle mixer in AISI 304L stainless steel.

Operating as the heart of a new production line, the machine receives solid powder ingredients and liquid additives, with the task of blending the solids and incorporating the liquids within short cycle times while achieving an exceptionally high level of homogenisation. Because it must handle a vast array of different formulations (as every tyre manufacturer specifies unique characteristics for their own compounds), the mixer strictly needed to maintain the ultra-high quality standards dictated by the sector, delivering fully validated and completely uncontaminated products. This demanded thorough, precision cleaning procedures during product or campaign changeovers.

The MC² Solution

  • Mixer model: KB2SC01300DD batch mixer
  • Material of construction: all parts built in high thickness 304L stainless steel
  • Maximum working capacity: 1,425 litres
  • Solid 304L stainless steel rotor shaft, with air-purged seals
  • Mixing tools: adjustable, bolted blades and scrapers made of 304L stainless steel
  • 2 off. flanged round inlets
  • 1 off. flanged round vent port
  • 2 off. round discharge outlets with flush-fit trapdoors and independent electropneumatic actuation
  • 2 off. frontal inspection doors with safety interlocks and gas-springs
  • Finishing of all parts in contact with product: satin polishing with RA ≤0.8µm
  • 4 off. high-speed side refiners with blade-type tools in 304L stainless steel, 5.5 kW e-motor (2900 rpm)
  • 8 off. atomisers for liquids
  • Pneumatic panel in 304L stainless steel for the distribution of compressed air
  • Direct drive, flanged to the mixer’s end support, complete with a 37 kW electric motor
  • ATEX declaration of conformity to Zone 21 internal / 22 External (ATEX II 2/3D Ex h IIIC 135°C DbDc)

Key Benefits

  • Outstanding homogenisation of all ingredients (solid and liquid). Perfect incorporation of liquids thanks to the atomisers (that create a mist) and the subsequent action of the refiners
  • Ultra-fast mixing times, guaranteeing super-high production levels (3 shifts/day)
  • Quick and easy cleaning operations
  • Guaranteed repeatability of lots
  • Excellent return on investment