The difference between Magnesium reduction process and Sodium reduction method
Nov 11, 2021
| The difference between Magnesium reduction process and Sodium reduction method | |||
| Item | Project | Sodium reduction method | Magnesium reduction process |
| 1 | Reducing agent characteristics | Sodium has a low melting point and is easy to clean and transport | The high melting point of magnesium makes it difficult to clean and transport |
| 2 | Reduction product treatment method | NaCl does not absorb water, does not deliquescence, and can be washed off with water | MgCl2 is easy to absorb water and is easy to deliquesce, so it should be distilled out by vacuum |
| 3 | investment situation | Simple equipment and low investment | Complex equipment and large investment |
| 4 | Characteristics of titanium sponge | Containing less iron and oxygen, but more Cl- the sponge titanium block is small, loose, and more powder, and the density is small (0.1-0.8g/cm3) | Low Cl- content, large and dense sponge titanium block, less powder, high bulk density (1.2-1.3g/cm3) |
| 5 | Product casting performance | Poor, more volatile | Good, less volatile |
| 6 | Restore operation | Fast speed, large heat release, simple operation, small furnace capacity | Slightly slower speed, less heat release, more complicated operation, large furnace capacity |
The industrial production of sponge titanium has a history of more than 50 years. Until the mid-1980s, the magnesium reduction vacuum distillation method, magnesium reduction-acid leaching method, sodium reduction method and magnesium reduction helium circulation distillation method were all used in industrial production. But by the 8th century
The industrial production of sponge titanium has a history of more than 50 years. Until the mid-1980s, the magnesium reduction vacuum distillation method, the magnesium reduction-acid leaching method, the sodium reduction method and the magnesium reduction helium circulating distillation method were all used in industrial production. But in the 80s of the 20th century
In the late decade, the sodium reduction method and the magnesium reduction-pickling method have been eliminated. The Oregon Metallurgical Company of the United States adopts the magnesium reduction-helium circulation distillation method, which has been discontinued at present, and all other plants adopt the magnesium reduction vacuum distillation method. In the industrial production of sponge titanium, the magnesium reduction-vacuum distillation method (MD method) has now occupied a dominant position.
