Process method for preparing sulfuric acid from low-sulfur-content pyrite
A process method, pyrite technology, applied in the field of sulfuric acid preparation, can solve the problems affecting the purity of sulfuric acid, reduce the rate of sulfur dioxide generation, increase the reaction time, etc., and achieve the effect of shortening the heating time, improving the purity and increasing the concentration
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[0031] The present invention will be further described in detail below in conjunction with the drawings.
[0032] Reference figure 1 , Is a process method for preparing sulfuric acid from low-sulfur pyrite disclosed in the present invention, including the following steps:
[0033] A1. Raw material processing: crushing pyrite;
[0034] A2. Roasting of raw materials: the powdered pyrite raw materials are introduced into the roasting furnace for high-temperature roasting, and the roasting temperature is 800℃;
[0035] A3. Catalytic oxidation of furnace gas: using a catalyst to mix sulfur dioxide discharged from the roaster with oxygen to oxidize sulfur dioxide into sulfur trioxide;
[0036] A4. Add water to prepare sulfuric acid: mix sulfur trioxide and water to make sulfuric acid.
[0037] Reference figure 2 The roasting furnace used in the above steps A1 and A2 includes a roasting furnace body, a pulverizer and a preheating device. The roaster body is a fluidized roaster commonly used i...
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