Molten iron heat preservation agent, preparation method of molten iron heat preservation agent and method for preserving temperature of molten iron
A technology of heat preservation agent and molten iron, applied in the field of smelting, can solve the problems of poor heat preservation effect and can not meet the higher demand of production, and achieve the effect of reducing temperature drop, good spreadability, and not easy to agglomerate
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[0029] The present invention also provides a kind of preparation method of molten iron insulation agent, comprises the following steps:
[0030] The carbonized rice husk with a mass fraction of 55-80%, the fly ash with a mass fraction of 10-35%, and the pearl sand with a mass fraction of 5-20% are mixed to obtain a molten iron heat preservation agent.
[0031] In the present invention, the fly ash and pearl sand are preferably screened first, and the carbonized rice husk is mixed with the screened fly ash and pearl sand to obtain the hot metal heat insulating agent.
[0032] In the present invention, the amount and source of the fly ash are consistent with the amount and source of the fly ash in the above-mentioned technical solution, and will not be repeated here; the amount and source of the pearl sand are the same as those of the pearl sand in the above-mentioned technical solution. The dosage is consistent with the source, and will not be repeated here. In the present inv...
Embodiment 1
[0042] carbonizing the rice husk to obtain carbonized rice husk;
[0043]The fly ash and pearl sand are screened, and the screened particle size is > 0mm and ≤ 1mm, and the screened fly ash and pearl sand are obtained;
[0044] The bulk density of 28.77kg carbonized rice husk and 8.22kg is 0.78g / cm 3 The fly ash and 4.11kg pearl sand are mixed to obtain molten iron heat insulating agent;
[0045] The obtained molten iron insulation agent is thrown into the molten iron tank, and then the molten iron is transported to steelmaking.
[0046] The present invention has measured the temperature of the molten iron that present embodiment provides when ironmaking and steelmaking respectively, and the result is as shown in table 1, and table 1 is the insulation of the molten iron insulating agent that embodiment 1~2 of the present invention and comparative example 1~3 obtain performance data.
Embodiment 2
[0048] carbonizing the rice husk to obtain carbonized rice husk;
[0049] The fly ash and pearl sand are screened, and the screened particle size is > 0mm and ≤ 1mm, and the screened fly ash and pearl sand are obtained;
[0050] 24.66kg carbonized rice husk, 10.28kg bulk density is 0.7g / cm 3 The fly ash and 6.16kg pearl sand are mixed to obtain molten iron heat insulating agent;
[0051] The obtained molten iron insulation agent is thrown into the molten iron tank, and then the molten iron is transported to steelmaking.
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Abstract
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