Smelting process of industrial silicon
A smelting method and industrial silicon technology, applied in chemical instruments and methods, silicon compounds, inorganic chemistry, etc., can solve the problems of poor air permeability and reactivity of furnace materials, and achieve the effects of improving reactivity, increasing yield, and protecting forest resources
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Embodiment 1
[0033] This embodiment is used to illustrate the industrial silicon smelting method disclosed in the present invention.
[0034] Petroleum coke particles (particle size is 30-100 mesh, fixed carbon content is 90%, ash content is 0.25%), 20wt% H 2 o 2 solution, 85 wt% H 2 SO 4 The solution is mixed, petroleum coke particles, H 2 o 2 solution, H 2 SO 4 The solution is formulated according to 1g: 1.2ml: 2ml, and mixed evenly. The reaction was carried out at a temperature of 60° C. for 3 hours, and the reaction was stirred. The reacted petroleum coke powder was rinsed with deionized water until the pH value was 7 and then dried.
[0035] The above treated petroleum coke particles were immersed in a 10 wt% potassium hydroxide solution at normal temperature and pressure for 5 minutes, taken out and filtered to obtain modified petroleum coke particles A1.
[0036] Mix modified petroleum coke particles A1, unmodified petroleum coke particles (particle size not greater than 6m...
Embodiment 2
[0040] This embodiment is used to illustrate the industrial silicon smelting method disclosed in the present invention.
[0041] Petroleum coke particles (with a particle size of 50-100 mesh, a fixed carbon content of 91%, and an ash content of 0.20%) were calcined at a temperature of 1500°C.
[0042] Calcined petroleum coke particles were mixed with 68wt% HNO 3 solution, 95wt% H 2 SO 4 Solution mixing, petroleum coke particles, HNO 3 solution, H 2 SO 4 The solution is formulated according to 1g: 0.6ml: 3ml, and mixed evenly. The reaction was carried out at a temperature of 40° C. for 1 hour, and the reaction was stirred. The reacted petroleum coke powder was rinsed with deionized water until the pH value was 7 and then dried.
[0043] The above treated petroleum coke particles were immersed in 10 wt% potassium carbonate solution at normal temperature and pressure for 15 minutes, taken out and filtered to obtain modified petroleum coke particles A2.
[0044] Mix modifi...
Embodiment 3
[0048] This embodiment is used to illustrate the industrial silicon smelting method disclosed in the present invention.
[0049] Petroleum coke particles (with a particle size of 50-100 mesh, a fixed carbon content of 90%, and an ash content of 0.28%) were calcined at a temperature of 1500°C.
[0050] Calcined petroleum coke particles, 40wt% H 2 o 2 solution, 85 wt% H 2 SO 4 The solution is mixed, petroleum coke particles, H 2 o 2 solution, H 2 SO 4 The solution is prepared according to the ratio of 1g: 1ml: 2ml, and mixed evenly. The reaction was carried out at a temperature of 60° C. for 3 hours, and the reaction was stirred. The reacted petroleum coke powder was rinsed with deionized water until the pH value was 7 and then dried.
[0051] The above treated petroleum coke particles were immersed in 18 wt% sodium carbonate solution at normal temperature and pressure for 10 minutes, taken out and filtered to obtain modified petroleum coke particles A3.
[0052] Mix m...
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