Preparation method of porous composite carbonaceous reducing agent
A reducing agent and composite carbon technology, which is applied in the preparation/purification of carbon, chemical instruments and methods, silicon compounds, etc., can solve the problems of incompatibility between reactivity and pellet strength, so as to alleviate environmental ecological pressure and avoid resources Effect of waste and reduction of energy consumption
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Embodiment 1
[0033] The difference of embodiment 1 is:
[0034] The addition of sawdust is 5%, and the addition of binder is 2%;
[0035] Dry the reducing agent pellet precursor in step (4) under vacuum conditions, and then burn the sawdust in the reducing agent pellet precursor under vacuum at 200°C for 30 minutes. The sawdust is decomposed by burning to make the reducing agent pellets Pores are generated in the group precursor to obtain a porous composite carbonaceous reducing agent;
[0036] The specific resistance of the porous composite carbonaceous reducing agent in this example is 8000 μΩ·m, the fixed carbon content of the porous composite carbonaceous reducing agent pellet is 85%, the ash content is 3%, the reactivity is 92%, and the cold strength is 9000N.
Embodiment 2
[0037] The difference of embodiment 2 is:
[0038] The addition of sawdust is 30%, and the addition of binder is 20%;
[0039] Dry the reducing agent pellet precursor in step (4) under vacuum conditions, and then burn the sawdust in the reducing agent pellet precursor in vacuum at 600°C for 120 minutes. The sawdust is decomposed by burning to make the reducing agent pellets Pores are generated in the group precursor to obtain a porous composite carbonaceous reducing agent;
[0040] The specific resistance of the porous composite carbonaceous reducing agent in this example is 4000 μΩ·m, the fixed carbon content of the porous composite carbonaceous reducing agent pellet is 82%, the ash content is 5%, the reactivity is 90%, and the cold strength is 10000N.
Embodiment 3
[0041] The difference of embodiment 3 is:
[0042] The addition of sawdust is 15%, and the addition of binder is 10%;
[0043] Dry the reducing agent pellet precursor in the general step (4) under vacuum conditions, and then burn the sawdust in the reducing agent pellet precursor under vacuum at 400°C for 60 minutes. The sawdust is decomposed by burning to make the reducing agent Pores are generated in the pellet precursor to obtain a porous composite carbonaceous reducing agent;
[0044] The specific resistance of the porous composite carbonaceous reducing agent in this example is 6000 μΩ·m, the fixed carbon content of the porous composite carbonaceous reducing agent pellet is 86%, the ash content is 3%, the reactivity is 95%, and the cold strength is 8500N.
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