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Manufacturing method of high-purity sulfur increasing agent
2020-12-02

The manufacturing method of high purity sulfur enhancer is as follows:

The refined ferrous sulfate reacts with sodium sulfate to prepare a high-purity sulfur enhancer. The influencing factors in the reaction process are mainly investigated: the molar ratio of the reactants, the reaction temperature, the reaction time, the concentration of the reactants and other conditions, and finally the purity is obtained. 95.41% sulfur enhancer.

The sulfur enhancer is a dark brown hexagonal crystal with a relative density of 4.74g/cm3 and a melting point of 1193 to 1199 degrees Celsius. It is almost insoluble in water and insoluble in ammonia. Reacts with acid to produce ferrous salt and hydrogen sulfide gas.

  1. Direct heating method: After accurately weighing pure reduced iron powder and sublimed sulfur powder (the mass ratio of sulfur to iron is 74.2), mix them into a high-vacuum closed quartz tube, and heat at 1000 degrees Celsius for about 24 hours , Make the quartz tube continue to rotate

  2. Liquid phase reaction method: Prepare a certain concentration of sodium sulfate solution and ferrous sulfate (or ferric chloride) solution separately, and quickly put the prepared ferrous sulfate solution into the sodium sulfate solution, and a black precipitate will appear immediately, stir appropriately, and the reaction is complete . This test adopts the liquid phase reaction method and uses a multifunctional mixer to be carried out in a beaker.

  3. Redox volumetric method: The potassium dichromate volumetric method is used for the determination of Fe in FeS. Reagents ferrous sulfate heptahydrate, sodium sulfate nonahydrate.

    At present, the beneficiation method of sulfur-enhancing agent used in our country is mainly the flotation method, and a few adopt the reselection method. According to the beneficiation test results of pyrite ore deposits of sedimentary metamorphic, coal-measure stratigraphic sedimentary and hot-water filling explanatory deposits, it is technically possible to select pyrite as a pyrite concentrate with a sulfur content of more than 35%. At the same time that the economic benefits are good, useful elements such as copper, gold and silver are comprehensively recovered.

    The above is the introduction to the manufacturing method of high purity sulfur enhancer, thanks for reading.

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