Patent EP-3838856-A1 (EP)
Inventor: KLUGE MATEUSZ JANUSZ
IPC: C03C13/06
Filed: 2020-12-18
Abstract: A method of producing stole wool of a specific composition using steel slag as a component of raw materials used for lava production, which is fed to a cascade spinner comprising rotors, which uses the centrifugal force of the rotors and the air blowing from the rotor crowns, characterised in that, to obtain wool with a composition of: SiO 2  in the range of: 31.16% ÷ 44.86%, Al 2 O 3  in the range of: 18.12% ÷ 29.97%, CaO in the range of: 14.13% ÷ 24.81%, MgO in the range of: 5.67% ÷ 15.44%, CaO+MgO in the range of: 24.03% 
÷ 37.68%, Na 2 O in the range of: 0% ÷ 4.87%, K 2 O in the range of: 0% ÷ 4.63%, Na 2 O+K 2 O in the range of: 0% ÷ 6.95%, Fe 2 O 3  in the range of: 0% ÷ 11.56%, TiO 2  in the range of: 0% ÷ 4.32%, P 2 O 5  in the range of: 
0% ÷ 4.15%, SO 3  in the range of: 0% ÷ 4.78%, MnO in the range of: 0% ÷ 4.15%, BaO in the range of: 0% 
÷ 4.89%, Cr 2 O 3  in the range of: 0% ÷ 4.25%, SrO in the range of: 0% ÷ 4.36%, ZrO 2  in the range of: 0% ÷ 4.88%, ZnO in the range of: 0% ÷ 4.02%, PbO in the range of: 0% ÷ 3.99% and with biological durability preventing the carcinogenic effect of wool, raw steel slag in the amount of 3÷15 [%] v/v is added to a mixture of raw materials used for stone wool production. The entire mixture is melted in a furnace, after which lava (1) at a temperature of 1,350-1,550°C is gravitationally fed by a chute to a cascade spinner, comprising four rotors (1.0, 2.0, 3.0, 4.0) with diameters of: first rotor (1.0) - from 150 mm to 250 mm, second rotor (2.0) - from 200 mm to 300 
mm, third rotor (3.0) - from 350 mm to 450 mm, and fourth rotor (4.0) - from 350 mm to 450 mm, to first 
rotor (1.0). Rotors (1.0, 2.0, 3.0, 4.0) rotate around their long axes at speeds of: first rotor (1.0) - from 3,000 to 4,500 rpm, rotating anticlockwise (looking from the front of the cascade spinner), second rotor (2.0) - from 5,000 to 7,500 rpm, rotating clockwise (looking from the front of the cascade spinner), third rotor (3.0) - from 5,500 to 8,000 rpm, rotating anticlockwise (looking from the front of the cascade spinner), fourth rotor (4.0) - from 5,500 to 8,000 rpm, rotating clockwise (looking from the front of the cascade spinner). Lava (1) from first rotor (1.0) is fed to second rotor (2.0), then from second rotor (2.0) to third rotor (3.0), and then from third rotor (3.0) to fourth rotor (4.0), with angle (β) at which the stream of lava enters second rotor (2.0) from first rotor (1.0) being 100-150°. On second, third, and fourth rotors (2.0, 3.0, 4.0), on their crowns (2.01, 3.01, 4.01), the following plates are mounted: on second rotor (2.0): first plate (2.1), 7 pieces, inclined to the axis of crown (2.a) at an angle of 0° to 5°, second plate (2.2), 2 pieces, inclined to the axis of crown (2.b) at an angle of 2° to 12°, third plate (2.3), 2 pieces, inclined to the axis of crown (2.c) at an angle of 9° to 19°, fourth plate (2.4), 2 pieces, inclined to the axis of crown (2.d) at an angle of 16° to 26°, fifth plate (2.5), 2 pieces, inclined to the axis of crown (2.e) at an angle of 23° to 33°, sixth plate (2.6), 9 pieces, inclined to the axis of crown (2.f) at an angle of 30° to 40°; on third rotor (3.0): first plate (3.1), 15 pieces, inclined to the axis of crown (3.a) at an angle of 0° to 5°, second plate (3.2), 2 pieces, inclined to the axis of crown (3.b) at an angle of 2° to 12°, third plate (3.3), 2 pieces, inclined to the axis of crown (3.c) at an angle of 9° to 19°, fourth plate (3.4), 2 pieces, inclined to the axis of crown (3.d) at an angle of 16° to 26°, fifth plate (3.5), 2 pieces, inclined to the axis of crown (3.e) at an angle of 23° to 33°, sixth plate (3.6), 21 pieces, inclined to the axis of crown (3.f) at an angle of 30° to 40°; on fourth rotor (4.0): first plate (4.1), 16 pieces, inclined to the axis of crown (4.a) at an angle of 0° to 5°, second plate (4.2), 1 piece, inclined to the axis of crown (4.b) at an angle of 5° to 15°, third plate (4.3), 12 pieces, inclined to the axis of crown (4.c) at an angle of 15° to 25°, fourth plate (4.4), 3 pieces, inclined to the axis of crown (4.d) at an angle of 25° to 35°, fifth plate (4.5), 11 pieces, inclined to the axis of crown (4.e) at an angle of 35° to 45°, sixth plate (4.6), 1 piece, inclined to the axis of crown (4.f) at an angle of 30° to 40°, seventh plate (4.7), 2 pieces, inclined to the axis of crown (4.g) at an angle of 20° to 30°, eighth plate (4.8), 1 piece, inclined to the axis of crown (4.h) at an angle of 8° to 18°, ninth plate (4.9), 1 piece, inclined to the axis of crown (4.i) at an angle of 1° to 11°. To control the angle of the air supplied from the crowns of second rotor (2.0), third rotor (3.0), and fourth rotor (4.0), the flow of which in these crowns (2.01, 3.01, 4.01) is from 10,000 Nm 3 /h to 20,000 Nm 3 /h, giving air blow speed directly at the outlets of crowns (2.01, 3.01, 4.01) from 80 m/s to 180 m/s, wherein to control the temperature of four rotors (1.0, 2.0, 3.0, 4.0), a mixture of deionised water and reverse osmosis water is used, with a proportion of deionised water from 50% to 90% and of reverse osmosis water from 50% to 10% and with a mixture temperature of 5-40°C, which is fed to rotors (1.0, 2.0, 3.0, 4.0) in the following quantities: to first rotor (1.0) 
- from 0.5 l/min to 15.0 l/min, to second rotor (2.0) - from 1.5 l/min to 25.0 l/min, to third rotor (3.0) - from 3.5 l/min to 30.0 l/min, to fourth rotor (4.0) - 
from 3.5 l/min to 30.0 l/min.