Abstract: Provided are a human LIFR antigen binding protein, a preparation method therefor, and an application thereof. A series of human LIFR antibodies having biological functions are obtained using human LIFR-ECD protein immune H2L2 humanized antibody transgenic mice by means of single B cell cloning technology (SBC), single B cell sequencing analysis, and Fc recombination. The method greatly improves the discovery efficiency and the yield of antibody drugs, and the obtained human LIFR antibody has good affinity and can block the binding of huLIF proteins to huLIFR/gp130 cells, thereby inhibiting signaling pathways such as STAT3, further inhibiting the growth of tumors, and achieving the purpose of tumor prevention and treatment.

Abstract: A method for smelting low-phosphorus high-manganese steel based on reduction dephosphorization of ferromanganese is provided in the present application, relating to the technical field of high-manganese steel smelting, where the dephosphorization of ferromanganese is carried out under reducing atmosphere conditions through mediate-frequency induction furnace to obtain molten ferromanganese with lower phosphorus content, which is subsequently mixed with low phosphorus molten steel obtained by smelting in oxidative period of electric arc furnace in LF ladle refining furnace to make the Mn content of steel reach the requirement of high-manganese steel, and smelting is carried out under the condition of reducing atmosphere by adjusting the composition and temperature of the molten steel to meet the requirements of the target composition of the steel grade before tapping the steel.

Abstract: A method for smelting low-phosphorus high-manganese steel based on reduction dephosphorization of ferromanganese is provided in the present application, relating to the technical field of high-manganese steel smelting, where the dephosphorization of ferromanganese is carried out under reducing atmosphere conditions through mediate-frequency induction furnace to obtain molten ferromanganese with lower phosphorus content, which is subsequently mixed with low phosphorus molten steel obtained by smelting in oxidative period of electric arc furnace in LF ladle refining furnace to make the Mn content of steel reach the requirement of high-manganese steel, and smelting is carried out under the condition of reducing atmosphere by adjusting the composition and temperature of the molten steel to meet the requirements of the target composition of the steel grade before tapping the steel.