The method uses H2S and SO2 as raw materials, and H2S and SO2 are respectively subjected to contact reaction through a reactor with acid medium, and the reaction product is a mixture of soluble sulfur and insoluble sulfur. The mixture is subjected to washing, drying, pulverization, extraction and the like to obtain an insoluble sulfur product.
Gasification, also known as high-temperature method is to dry the sulfur melting and intermittent heating to 500 ~ 700 ℃ to produce superheated steam, and then rely on its own high-speed jet into the quenching liquid rapidly cooled to be insoluble sulfur and soluble sulfur plastic mixture , In which the IS mass fraction can be more than 50%. After being cured, it is extracted with CS2 solvent, separated, rinsed and dried to obtain high content of insoluble sulfur products. And later on the original process of continuous improvement in the reaction process into a certain amount of H2S, so that the viscosity of raw materials in the production process to reduce, thereby improving the stability of insoluble sulfur products; canceled quenching, refining machine acid deacidification of sulfur Tablet and drying, crushing and other links, "one-step" direct production of high content of insoluble sulfur products, simplifying the production process and reduce production costs.
B - type net belt cleaning melting method
Melt, also known as low-temperature method, is 130 ~ 150 ℃ in the melting of sulfur, add a certain amount of stabilizer, and then the mixture temperature increased to 180 ~ 210 ℃. And the mixture is kept under stirring for a certain period of time so that the soluble sulfur is maximally converted to insoluble sulfur.