Products Description
A new process for smelting medium and low carbon ferro manganese by blast furnace-refining furnace method, the temperature of the molten pool of the refining furnace is controlled at 1650℃-1750℃, the characteristic is that the blast furnace ferromanganese liquid is hot sent to the mixing furnace to heat up to 1450℃-1550℃, and then added to the refining furnace for oxygen blowing decarburization, the oxygen supply intensity is 2.5-3.0m3(min·t)-1 in the early stage, argon oxygen mixed blowing in the middle stage, the oxygen supply intensity is 0.8-1.0m3(min·t)-1, and the oxygen is turned off and argon is blown for reduction operation in the later stage, and the terminal temperature is controlled at 1750℃-1800℃. It can make full use of poor manganese ore resources to organize production, realize hot delivery and hot loading, low energy consumption, high production efficiency, and high manganese recovery rate.
Products parameters
| Grade | Designation | Chemical Composition | ||||
| Mn | C | Si | P | S | ||
| ≥ | ≤ | ≤ | ||||
| Low Carbon | FeMn85C0.2 | 85 | 0.2 | 0.8-2.0 | 0.1-0.3 | 0.02 |
| FeMn80C0.5 | 20 | 0.5 | 0.8-2.0 | 0.1-0.3 | 0.02 | |
| FeMn80C0.7 | 20 | 0.7 | 0.8-2.0 | 0.1-0.3 | 0.02 | |
Products cooperation picture
1.Pure iron was used as a diluent for ferro manganese alloy, which was melted by high-frequency heating and centrifugally cast into block samples. A method for analyzing manganese, silicon and phosphorus in ferromanganese by centrifugal casting and X-ray fluorescence spectrometry was established. A graphite crucible was inserted into the ceramic crucible to avoid the contamination of the measured components by the ceramic crucible material. This sample preparation method can effectively overcome the mineral effect and particle effect of ferroalloys. The experimental results show that the chemical composition distribution at different parts and depths of the block sample surface is uniform, and the samples under the same melting conditions have good repeatability, which solves the error caused by powder tableting in the measurement results. The linear ranges of Mn, Si and P are 70.47%~84.28%, 0.43%~1.51% and 0.15%~0.34%, respectively. When the method is used to determine Mn, Si and P in ferromanganese, the relative standard deviations are 0.17%, 1.61% and 3.64%, respectively. Compared with the results of chemical determination, it has good consistency and meets the requirements of routine analysis.
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