Austenitic stainless steel smelted through laterite-nickle ore and production process of austenitic stainless steel
A technology for austenitic stainless steel and laterite nickel ore, which is applied in the field of stainless steel smelting technology, can solve the problems of long time for product formation, large equipment investment, and many production processes, so as to improve internal quality, reduce intermediate processes, and increase molten steel loading capacity. Effect
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[0032] Example 1
[0033] This embodiment provides a smelting of austenitic stainless steel using laterite nickel ore, and its chemical composition weight percentage is: C: 0.042%, Si: 0.49%, Mn: 1.02%, Cr: 18.07%, Ni: 8.03% , N: 0.044%, Cu: 0.02%, P: 0.0287%, S: 0.0026%, O: 0.0042%, Ti: 0.008%, Mo: 0.025%, the rest are Fe and inevitable impurity elements; Dg value = 6.98 .
[0034] The above-mentioned austenitic stainless steel production process is as follows:
[0035] Now take the production of austenitic stainless steel in a φ5×40m drying kiln, φ4.4×100m rotary kiln, 33000KVA submerged arc furnace, 75t AOD furnace, LF ladle refining furnace, and a first-class 200*1600mm slab continuous caster as an example. Describe the production process of the present invention:
[0036] (1) With different taste of laterite nickel ore, the Ni in laterite nickel ore is 1.3~1.6%, Fe is 20.0~26.0%, P <0.01%;
[0037] (2) Use dry kiln coal powder as fuel to reduce the water content of laterite ore ...
Example Embodiment
[0065] Example 2
[0066] This embodiment provides a smelting of austenitic stainless steel using laterite nickel ore, and its chemical composition weight percentage ratio is: C: 0.040%, Si: 0.54%, Mn: 1.05%, Cr: 18.12%, Ni: 8.04% , N: 0.046%, Cu: 0.04%, P: 0.0264%, S: 0.0039%, O: 0.0037%, Ti: 0.007%, Mo: 0.024%, the rest are Fe and inevitable impurity elements; Dg value = 7.38 .
[0067] The production process of the austenitic stainless steel in this embodiment is as follows:
[0068] Now take the production of austenitic stainless steel in a φ5×40m drying kiln, φ4.4×100m rotary kiln, 33000KVA submerged arc furnace, 75t AOD furnace, LF ladle refining furnace, and a first-class 200*1600mm slab continuous caster as an example. Describe the production process of the present invention:
[0069] (1) With different taste of red earth nickel ore, Ni is 1.3~1.6%, Fe is 20.0~26.0%, P <0.01%;
[0070] (2) Dry kiln coal powder is used as fuel to reduce the water content of laterite ore from 3...
Example Embodiment
[0099] Example 3
[0100] This embodiment provides a smelting of austenitic stainless steel using laterite nickel ore, and its chemical composition weight percentage is: C: 0.039%, Si: 0.43%, Mn: 1.06%, Cr: 18.16%, Ni: 8.07% , N: 0.047%, Cu: 0.04%, P: 0.0291%, S: 0.0051%, O: 0.0045%, Ti: 0.006%, Mo: 0.023%, the rest are Fe and inevitable impurity elements; Dg value = 6.85 .
[0101] The production process of the austenitic stainless steel in this embodiment is as follows:
[0102] Now take the production of austenitic stainless steel in a φ5×40m drying kiln, φ4.4×100m rotary kiln, 33000KVA submerged arc furnace, 75t AOD furnace, LF ladle refining furnace, and a first-class 200*1600mm slab continuous caster as an example. Describe the production process of the present invention:
[0103] (1) With different taste of red earth nickel ore, Ni is 1.3~1.6%, Fe is 20.0~26.0%, P <0.01%;
[0104] (2) Dry kiln coal powder is used as fuel to reduce the water content of laterite ore from 35-40% ...
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