In the antimony smelting process, slagging plays a crucial role and there are many special considerations involved.

The unique physical properties of antimony pose challenges to the control of smelting temperature. Antimony has the characteristics of low melting point and high volatility, which means that the setting of smelting temperature needs to be carefully balanced. Low temperature and poor fluidity of slag are not conducive to the full progress of smelting reactions; If the temperature is too high, antimony will evaporate in large quantities, causing serious losses. Good slag making operation can optimize the composition and structure of slag, reduce the temperature required for smelting, effectively reduce the volatilization of antimony while ensuring good fluidity of slag, and improve the recovery rate of antimony.

The removal of arsenic is also a key aspect that needs to be focused on in antimony smelting using the slag making method. Antimony ore often accompanies arsenic, a harmful impurity, which, if not treated, can seriously affect the quality of antimony products. During the slag making process, by precisely controlling the oxidation atmosphere and adding specific fluxes such as soda, arsenic can be fixed in the slag in the form of arsenate salts, such as Na3-AsO ₄, thereby achieving partial arsenic removal and improving the purity of antimony products.

In addition, the control of the direction of iron cannot be ignored. Iron, as a common impurity in antimony smelting, exhibits different behaviors in different smelting equipment. In a blast furnace, iron is prone to enter the matte phase, leading to the loss of antimony; During the direct furnace reduction process, iron mainly enters the slag phase. Therefore, according to different smelting processes, reasonable control of the distribution ratio of iron in slag, matte, and metal phases is the key to improving antimony smelting efficiency and reducing losses.

In summary, the slag making method in antimony smelting requires comprehensive consideration of factors such as the physical properties of antimony, removal of arsenic, and the direction of iron. Through scientific and rational operation, efficient smelting and purification of antimony can be achieved.