The present invention pertains to plants for producing inorganic fibers from melted rocks, advantageously, with narrow working interval and low
diathermy, for example, basalts, diabases, amphibolites, andesites, dacites, rhyolites and other rocks. The
plant comprises the furnace for obtaining the melt connected to the feeder, working aperture and a warmed feeder with draw dies located below working aperture where, according to the invention, transition chamber is installed on the feeder exit, such transition chamber is intended for creation of
thin layer melt flow, its
enclosure contains working aperture, the transition chamber has the heater, the threshold installed at its entrance and adjustable
damper located over the threshold, and these components are intended for obtaining the melt flow of needed thickness and quality. The feature of the proposed invention is also the bottom of the transition chamber which has an inclination directed towards the working aperture. The
plant has also accumulator tank installed between the exit of the furnace for obtaining the melt and the feeder, which is intended for receiving the melt homogeneous in ten is of composition and temperature. Another feature of the
plant is that the plant has the unit for removing iron containing impurities from the melt, such unit being the source of direct or pulsing current with electrodes installed at the feeder entrance, connected to corresponding poles of the
current source and intended for creating
electric current in the melt. The proposed invention is aimed at creation of such plant which will improve strength, chemical and
thermal stability of produced fibers by way of creating conditions near working aperture that will decrease the quantity of external impurities in the flow and allow obtaining of the melt, which is homogenous in terms of composition and temperature, in said zone of the plant. It is attained by means of adjustable
damper installed at the entrance of the transition chamber, which does allow upper part of the melt flow (i.e. foam) to pass to the working aperture, and by means of the threshold installed below the adjustable
damper, which does not allow lower part of the melt containing heavy unmelted rock particles to pass to the transition chamber. This significantly reduces the possibility of formation of stress concentrators in produced
fiber and also the draw dies clogging.