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How the Habla Zig-Zag Kiln Works

The Habla Zig-Zag Kiln (HZZK) construction and operation is unique and differs from other zig-zag kilns in significant ways.

EFFICIENT USE OF FUEL REDUCES ENERGY CONSUMPTION

  • Significantly less masonry is heated during the firing process.
  • The zig-zag partitioned walls are themselves made of green bricks, which when fired also become the saleable product.
  • High fuel combustion efficiency means less fuel is consumed, almost entirely eliminating GHG, soot (black carbon) and CO
  • The directional zig-zag controlled air turbulence, creates higher temperatures, which increases fuel combustion efficiency and decreases fuel consumption.
  • Heat from fired bricks, is reclaimed from behind the fire zone and moved forward ahead of the fire zone accelerating the drying of green bricks and facilitating faster fire progress.
  • Increasing the speed of firing zone, means the kiln requires a smaller footprint.

EFFICIENT FIRING & HEAT RECOVERY PROCESSES

  • The HZZK offers almost complete fuel combustion.
  • The fire moves through stationary bricks in a zig-zag fashion creating critical air turbulence allowing for: even heat distribution; maximum heat generation; maximum energy extraction from the fuel source.
  • The firing process is accelerated by creating air flow and turbulence (draught) through the use of a low horsepower axial fan.
  • Control valves and dampers, are used in conjunction with the fan, resulting in increased directional air turbulence and highly efficient fuel combustion with minimal emissions.

UNIQUE FIRING PROCESS