Method for preparing calcium carbide
A technology of calcium carbide and quicklime, applied in the direction of carbide, calcium carbide, etc., can solve the problems that the production process of calcium carbide needs to be improved, and achieve the effects of lower temperature, high production capacity and good quality
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Embodiment 1
[0043] Using quicklime and reduced coal as raw materials to prepare calcium carbide, the specific method is as follows:
[0044] (1) Quicklime (CaO content 98%) and reduced coal (fixed carbon content 84.32%) are respectively ground to 100%<0.5mm.
[0045] (2) The quicklime obtained in the step (1) is finely ground, the reduced coal and manganese oxide are mixed in a mass ratio of 100:77:1, and the molar ratio of C and CaO at this time is 3.1:1.
[0046] (3) Roughly mix the mixed raw materials obtained in step (2) and then use a powerful mixer to mix them evenly, and add an organic binder to form a briquetting ball. The size of the briquette is about 3 cm.
[0047] (4) Feed the pressed balls into the calcium carbide furnace for calcium carbide reaction, the reaction temperature is 1600°C, and the holding time is 2 hours. After the reaction, the calcium carbide product was taken out when it was cooled to 60°C with the furnace, and after crushing, the gas generation measured by ...
Embodiment 2
[0049] Using quicklime and reduced coal as raw materials to prepare calcium carbide, the specific method is as follows:
[0050] (1) Quick lime (CaO content 98%) and reduced coal (fixed carbon content 84.32%) are respectively ground to 100%<0.074mm.
[0051] (2) The quicklime obtained in the step (1) finely ground, the reduced coal and nickelous oxide are mixed according to the mass ratio of 100:80:1.5, and the molar ratio of C and CaO at this time is 3.2:1.
[0052] (3) Roughly mix the mixed raw materials obtained in step (2) and then use a powerful mixer to mix them evenly, and add an organic binder to form a briquetting ball. The size of the briquette is about 3 cm.
[0053] (4) Feed the pressed balls into the calcium carbide furnace for calcium carbide reaction, the reaction temperature is 1700°C, and the holding time is 1.0h. After the reaction, the calcium carbide product was taken out when it was cooled to 60°C with the furnace, and after crushing, the gas generation m...
Embodiment 3
[0055] Using quicklime and reduced coal as raw materials to prepare calcium carbide, the specific method is as follows:
[0056] (1) Quick lime (CaO content 98%) and reduced coal (fixed carbon content 84.32%) are respectively ground to 100%<0.074mm.
[0057] (2) The quicklime, reduced coal and cobalt oxide obtained in step (1) were finely ground and mixed according to the mass ratio of 100:75:2, and the molar ratio of C and CaO at this time was 3.0:1.
[0058] (3) Roughly mix the mixed raw materials obtained in step (2) and then use a powerful mixer to mix them evenly, and add an organic binder to form a briquetting ball. The size of the briquette is about 3 cm.
[0059] (4) Feed the pressed ball into the calcium carbide furnace for calcium carbide reaction, the reaction temperature is 1800°C, and the holding time is 1.5h. After the reaction, the calcium carbide product was taken out when it was cooled to 50°C with the furnace, and after crushing, the gas generation measured ...
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