Steel-smelting alterant for molten steel refining
A technology of modifier and molten steel, which is applied to blast furnace parts, furnaces, blast furnace details, etc., and can solve problems such as steel instability and steel ingot cracks
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[0018] Example 1
[0019] The molten steel refining modifier of the present invention is produced by a carbon reduction method in a 3200KVA submerged arc furnace. Table 1 is the set chemical composition (wt%).
[0020] element
[0021] The raw material batch composition of producing 1 ton of molten steel refining modifier of the present invention is shown in Table 2:
[0022] name
[0023] The main ingredients contained in the above raw materials:
[0024] 1. Weight percent of rare earth concentrate used: REO 50.06%, Nb 2 O 3 0.75%, MgO 5.05%, CaO 7.05%, Al 2 O 3 6.22%, TiO 2 7.86% etc. 2. Weight % of barite: BaSO 4 6%, SrSO 4 13% etc. 3. Silica wt%: SiO 2 98% etc.
[0025] The chemical composition (weight %) of the molten steel refining modifier of the present invention produced is shown in Table 3:
[0026]
Example Embodiment
[0027] Example 2
[0028] The molten steel refining modifier of the present invention is produced by a carbon reduction method in a 3200KVA submerged arc furnace. Table 4 is the set chemical composition (wt%).
[0029] element
[0030] The raw material ratio of producing 1 ton of molten steel refining modifier of the present invention is shown in Table 5: kg
[0031] name
[0032] The above raw materials contain main elements: manganese ore contains MnO 2 33%, bauxite containing Al 2 O 3 62%, other raw materials are the same as in Example 1.
[0033] The chemical composition (weight %) of the molten steel refining modifier of the present invention finally obtained is shown in Table 6:
[0034]
[0035] The above-mentioned production ton consumes 9856KV of electricity, and the electricity voltage is 80V, which can be continuously produced for slag-free smelting. Ca, Mg, Sr, Nb, Al, Ti, etc. in the alloy are naturally brought in by the raw m...
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