New Products / Product Highlights

Sacmi: Two-Channel Roller Kiln

The functional/styling updating policy that has been applied to all Sacmi Forni machines for several years has led to the development of a new range of two-channel kilns with outstanding design and performance. On this new two-channel range, named FBP, all the structural parts have been designed to make maintenance easier and improve air seal during firing. In the roller through-zone, the tubular structural supports have been eliminated to extend the “flocking” operation to all rollers.

Hot air (150°C) can be recovered from the cooling zone to feed the kiln burners, providing fuel savings in the order of 6%. All combustion air piping is insulated and incorporated within the structure. In the slow cooling zone, the micro-blowers used on previous versions have been replaced by an indirect heat exchange zone with heat exchange piping. In final blowing, numerical computer simulation has been used to identify the most efficient hole diameters, pipe center-to-centers, and pipe diameters.

A new final extraction hood geometry has been developed and assessed the same way; unlike previous versions, the new hoods result in a more homogeneous thermal profile and lower outgoing piece temperatures. The goal was to use the two-channel kiln as the “sum” of two separate -- and separately manageable – machines. To this end, the intermediate roof has been built using a new construction technique that employs a greater number of silicon carbide bars than other machines on the market, thus allowing temperature differences between one channel and the other as high as 450°C.

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