This invention relates to a method for
smelting low-
phosphorus stainless steel base material from
nickel and chrome-containing low-grade
limonite. The method comprises: (1) pre-treating
nickel and chrome-containing low-grade
limonite via sieving, pulverizing and
drying to obtain ore
powder and ore blocks with different particle sizes, and mixing with fuel and flux to obtain sinter ore; (2) mixing various dedusted ashes, sintered return fines, and ore
powder with an
adhesive and a reductant, and passing into cold-pressed balls or carbon-containing balls under
high pressure; (3)
drying the carbon-containing balls, adding into a converter, and reducing to obtain pre-reduced balls; (4) mixing the sinter ore with partial ore blocks, the cold-pressed balls, the carbon-containing balls, the pre-reduced balls, the fuel, the flux and auxiliary materials, and
smelting in a
blast furnace to obtain molten
nickel and chrome-containing
alloy or molten iron; (5) mixing with the cold-pressed balls, the carbon-containing balls and the pre-reduced balls, and
smelting in an electric furnace or a converter to reduce, decarbonizes, dephosphorize and obtain clean molten stainless steel base material that can be directly used in steel making; (6)
casting with a
continuous caster to obtain
solid stainless steel base material that can be directly used in steel making. The method has such advantages as low cost, little
pollution, abundant raw materials, high
recovery rate of
alloy elements, and few harmful elements.