FIELD: technological processes.
SUBSTANCE: invention relates to manufacturing of foamed granules. Method to produce foamed granules includes shaping of raw granulated material from charge containing a foaming agent, a glass forming element and/or glass, heating of raw granulated material in a rising flow of smoke gases in the heating zone of the vertical furnace to temperature providing foaming, with subsequent cooling of foamed granules. Raw granulated material is foamed in suspended layer. Quantity of raw granulated material fed to the furnace is defined according to the following formula: G≤38⋅ρ⋅S⋅(Vs.g-Vr.g), kg/hr, where ρ - apparent density of raw granulated material, kg/m3, S - cross section of furnace heating zone, m2; Vs.g - velocity of smoke gases in the furnace heating zone, m/sec.
EFFECT: invention simplifies method of foamed granules production, increases efficiency of the process and quality of the finished product.
5 cl, 3 dwg
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