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The complexed iron-sulfur recovery process is mainly used in small-scale sulfur production facilities. The initial by-product produced is sulfur paste with a moisture content of 30–50%, which means that this sulfur by-product requires further processing. Currently, users generally employ a continuous sulfur melting process for sulfur purification. The following suggestions are offered to improve the capacity of this continuous sulfur melting process: 1. Ensure that the solid content of elemental sulfur fed into the sulfur melting tank is as high as possible. The specific heat capacity of water is higher than that of sulfur; therefore, for the same temperature increase, the higher the water content, the more heat needs to be absorbed, resulting in greater energy consumption and making it difficult to save energy. Thus, under the same conditions, when sulfur is fed continuously (while it remains fluid), a higher solid content of sulfur contributes to an increased sulfur melting capacity. 2. Regularly boil the pot to remove dirt. The higher the content of salts and impurities in the feed, the more likely scaling will occur inside the sulfur melting equipment. This increases the thermal resistance due to fouling, reduces the heat transfer coefficient, and hinders the sulfur melting process. Therefore, it is necessary to carry out regular cleaning operations to remove fouling. 3. The temperature of liquid sulfur should be as high as possible, above 125°C. Within the temperature range of 120–155°C, the higher the temperature of the liquid sulfur, the lower its viscosity, which facilitates the sedimentation of the liquid sulfur and the separation from the clear liquid. Additionally, a higher temperature helps to prevent melting failure and the formation of lumps or scale due to low local temperatures.