Method for extracting potassium by reaction of potassium feldspar in pipeline
A pipeline reactor and potassium feldspar technology, which is applied in the field of potassium feldspar extraction of potassium fertilizer, can solve the problems such as the inability to efficiently extract potassium in potassium feldspar, and achieve the effects of simple operation, low energy consumption, and low equipment investment.
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Embodiment 1
[0022] The raw material potassium feldspar contains potassium oxide 8.0wt%, and the particle size is 100 mesh; the concentration of sulfuric acid is: 98wt%; the concentration of fluorine in the fluoric acid is: 10wt%; the total amount of potassium feldspar is 1, and the potassium feldspar The stone and fluorine-containing acid are mixed in the mixing tank according to the weight ratio of 1.0:2.0, and stirred evenly; the potassium feldspar and sulfuric acid are mixed in the mixing tank according to the weight ratio of 0.0:1.0, and stirred evenly; the two streams of slurry are pumped into the The reaction is carried out in the pipeline reaction, and the reaction time of the reaction slurry in the pipeline reactor is 1 hour (the reaction time is controlled by controlling the flow rate of the slurry in the pipeline and the length of the reaction pipeline); the temperature of the slurry reaction in the pipeline reactor The range is 120°C, the reaction temperature is obtained by the ...
Embodiment 2
[0024] The raw material potassium feldspar contains potassium oxide 12.0wt%, the particle size is 200 mesh, the concentration of sulfuric acid is 60wt%, and the fluorine element concentration in the fluoric acid is 8wt%; the total amount of potassium feldspar is 1, and the potassium feldspar and the Fluoric acid is mixed in the mixing tank according to the weight ratio of 0.9:1.2, and stirred evenly; the potassium feldspar and sulfuric acid are mixed in the mixing tank according to the weight ratio of 0.1:1.0, and stirred evenly; the two slurries are pumped into the pipeline reaction To react, the reaction time of the reaction slurry in the pipeline reactor is 1 hour, which is controlled by controlling the flow rate of the slurry in the pipeline and the length of the reaction pipeline; the temperature range of the slurry reaction in the pipeline reactor is 80 ° C, The reaction temperature is obtained by directly feeding steam and sulfuric acid dilution heat into the pipe reacto...
Embodiment 3
[0026] The raw material potassium feldspar contains potassium oxide 10.0wt%, particle size is 250 mesh, sulfuric acid concentration is: 70wt%, fluorine element concentration is 20wt% in the fluoric acid; the total amount of potassium feldspar is 1, potassium feldspar and Fluorine-containing acid is mixed in the mixing tank according to the weight ratio of 1.0:4.0, and stirred evenly; the potassium feldspar and sulfuric acid are mixed in the mixing tank according to 0.0:0.5, and stirred evenly; the two raw materials are pumped into the pipeline reaction for reaction , the reaction time of the reaction slurry in the pipeline reactor is 3 hours, which is controlled by controlling the flow velocity of the slurry in the pipeline and the length of the reaction pipeline; the temperature range of the slurry reaction in the pipeline reactor is 30 ° C, and the reaction temperature It is obtained by dilution heat of sulfuric acid in the pipeline reactor; the flow velocity of the reaction ...
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