OVERVIEW

Each hearth forms a distinct chamber where process conditions can be varied.  Heat, steam, and reducing agents can be selectively applied to control a process.  Multiple process steps such as drying, calcining, incinerating, and cooling can be performed simultaneously in the same furnace.

Within a BSP multiple hearth furnace, oxygen rich or starved environments can be established. The unit also handles continuous or intermittent operating modes and can be designed with up-draft, down-draft, or cross-draft flow patterns to provide optimum process atmospheres.

With customized burner locations, each hearth or level of the furnace can be controlled to a different temperature.

Processing is controlled by the speed of the shaft.  The shaft's variable speed drive can be automated to change speeds with changes in feed moisture or weight. Feed rates and necessary retention times drive the size of the furnace.

BSP'S advanced instruments and control techniques provide maximum system performance.  All critical conditions affecting furnace operation can be automatically monitored and controlled to prevent costly downtime.

The vertical nature of a multiple hearth furnace typically results in a much smaller footprint than rotary kilns.