I. Classification of magnesium-based desulfurizer

Magnesium-based desulfurizer is a kind of alloy material used for removing sulfide in the process of iron and steel smelting. According to its chemical composition and different uses, it can be divided into the following types:

1. Magnesium-aluminum alloy desulfurizer

Magnesium-aluminum alloy desulfurizer is mainly composed of two elements, magnesium and aluminum, which has a very good desulfurization effect and can quickly eliminate the oxides in the melt, thus reducing the oxygen content in steel and improving the quality of steel. In addition, magnesium and aluminum alloy desulfurization agent can also make the liquidity of the melt become better, which is conducive to the steel out of the steel.

2. Trace aluminum-magnesium alloy desulfurizer

Trace aluminum-magnesium alloy desulfurizer is an alloy material composed of magnesium, aluminum, rare earth metals and other elements, which is mainly used for removing sulfide in scrap and low alloy steel, and can replace the traditional desulfurizers such as alumina and magnesium oxide.

3. Magnesium-iron alloy desulfurizer

Magnesium-iron alloy desulfurizer is mainly composed of magnesium and iron, which has good desulfurization effect. In iron and steel smelting, this desulfurizer can not only effectively remove the sulfide in the melt, but also eliminate the oxides and inclusions in the steel and improve the quality of steel.

                                            Mg-Al alloy                                                                                                          Mg-Fe alloy

Ⅱ. Magnesium-based desulfurization agent models, parameters and specifications

The following are the models, main parameters and specifications of several common magnesium-based desulfurizer:

Mg-Al alloy desulfurizer Mg: 20-60% Al: 20-70% Si: 3%max Φ5-25mm, length 20-50mm

Trace aluminum-magnesium alloy desulfurizer Mg: 25-35% Al: 0.5-1.0% Ce: 0.02-0.05% Φ5-25mm, length 20-50mm

Magnesium-iron alloy desulfurizer Mg: 25-40% Fe: 35-45% Si: 3%max Φ5-25mm, length 20-50mm

It should be noted that when using magnesium-based desulfurizer, it should be selected according to the specific smelting conditions and steel requirements in order to achieve the best desulfurization effect and steel quality.