Waste Industrial Processing of Boron-Treated by Plasma Arc to Produce the Melt and Fiber Materials

Abstract

The article presents the results of the melting of waste industrial processing of boron in the arc plasma to obtain melts and fibrous materials. It performs calculations power generation capacity of the reactor core of the current density and voltage gradient. When calculating the diameter of the reactor chamber accepted for determining the size and all the basic laws of the electric band are expressed through it. Research performed by methods of X-ray spectral analysis and electron microscopy. We studied the material composition of the melt and the mineral fiber obtained his blow from the man-made boron-containing waste using plasma arc reactor of the combined type. Experiments showed high refractoriness waste without additional charging (above 2800 °C) and the intensive evolution of gas during processing. To reduce the melting point, reduction of gas and evaporation substance as additional charging waste cullet used to produce uniform composition melts. Melting waste was investigated by mass concentration of 50 % (by waste) with finishing, eventually up to 60 %. At higher concentrations of mass (65 % or more) to obtain fiber failed to haunt the high content of magnesium in the waste, leading to the formation MgSiO₃. Melting of the components with mass concentration (waste—glass) 50:50 passed quietly with low gas emission, energy consumption for the melt was 3.4 kWh/kg, with melt draining conducted stretch fibers. Melting of the components with mass concentration (waste—glass) 60:40 also carried out calmly with a low gas emission, energy consumption for the melt has reached 4.5 kWh/kg. When pumping the melt was also carried stretch fibers, but fibers obtained differed inhomogeneity thickness (diameter). Thus, the content of magnesium in the melt increases with the concentration of waste, which increases the refractoriness and hence the duration of melting with increasing energy costs. When increased (to 60 %) in the concentration of waste melt is a sharp decrease of the silicon content in the fiber, which in turn explains the change in the surface structure.