Environment-friendly tundish covering agent and preparation method thereof
A tundish and covering agent technology, which is applied in the field of environment-friendly tundish covering agent and its preparation, can solve the problems of insignificant sulfur increase effect, reduced carbon increase, smoke emission, etc., and achieves remarkable environmental protection effect, reduced heat absorption, and suppressed The effect of molten steel temperature drop
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Embodiment 1
[0029] An environment-friendly tundish covering agent, made of the following raw materials in parts by weight: 34 parts of fused calcium silicate, 22 parts of quartz, 4 parts of fluorite, 20 parts of high-purity cement, 20 parts of high-carbon graphite, carboxymethyl Sodium cellulose 2 parts.
[0030] Among them: SiO in fused calcium silicate 2The mass percentage content of CaO is 28.5%, the mass percentage content of CaO is 56%, and the mass percentage content of MgO is 12%.
[0031] SiO in quartz 2 The mass percent content is 98%.
[0032] CaF in fluorite 2 The mass percentage content is 90%, SiO 2 The mass percent content is 5%.
[0033] High Purity Cement SiO 2 The mass percentage content of CaO is 21.0%, and the mass percentage content of CaO is 65.0%.
[0034] The mass percentage content of fixed carbon in high carbon graphite is ≥81.5%.
[0035] The active ingredient of the environment-friendly tundish covering agent is calculated by mass percentage: SiO 2 : 37...
Embodiment 2
[0042] An environment-friendly tundish covering agent, made of the following raw materials in parts by weight: 40 parts of fused calcium silicate, 35 parts of high-purity cement, 10 parts of quartz, 3 parts of fluorite, 8 parts of high-carbon graphite, carboxymethyl Sodium cellulose 3 parts.
[0043] Among them: SiO in fused calcium silicate 2 The mass percentage content of CaO is 29%, the mass percentage content of CaO is 52%, and the mass percentage content of MgO is 13%.
[0044] High Purity Cement SiO 2 The mass percentage content of CaO is 21.0%, and the mass percentage content of CaO is 65.0%.
[0045] SiO in quartz 2 The mass percentage content is 98.5%.
[0046] CaF in fluorite 2 The mass percentage content is 92%, SiO 2 The mass percent content is 4.5%.
[0047] The active ingredient of the environment-friendly tundish covering agent is calculated by mass percentage: SiO 2 : 29.64%, CaO: 45.90%, MgO: 4.82%, Fe 2 o 3 : 0.97%, Al 2 o 3 : 2.24%, Na 2 O: 0.50...
Embodiment 3
[0054] An environment-friendly tundish covering agent is made of the following raw materials in parts by weight: 70 parts of refining slag, 20 parts of high-purity cement, 5 parts of fluorite, 5 parts of quartz, and 2 parts of sodium carboxymethylcellulose.
[0055] Among them: SiO in premelted refining slag 2 The mass percentage content of CaO is 4.9%, the mass percentage content of CaO is 51%, and the content of Al 2 o 3 The mass percent content is 40%.
[0056] High Purity Cement SiO 2 The mass percentage content of CaO is 21.0%, and the mass percentage content of CaO is 65.0%.
[0057] CaF in fluorite 2 The mass percentage content is 93.5%, SiO 2 The mass percent content is 5.2%.
[0058] The active ingredient of the environment-friendly tundish covering agent is calculated by mass percentage: SiO 2 : 10.0, CaO: 52.0%, MgO: 2.0%, Fe 2 o 3 : 0.54%, Al 2 o 3 : 30.0%, Na 2 O: 1.70%, F - : 2.0%, fixed carbon: 0.5%, alkalinity 5.2.
[0059] The preparation method ...
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