MATHEMATICAL DESCRIPTION OF THE PROCESS OF MINERAL-FIBER FORMATION BY THE PLASMA METHOD A. N. Laktyushin and V. L. Sergeev UDC 532.516:666.1.036.25:531.767 The problem of microfiber formation from a melt jet of mineral raw material in exposure to a flow of electric-arc plasma is formulated. Its solutions are given for some simple cases.JEPTER7492019985 JEPTER749205