Comprehensive recycling process for potassium-containing tailings after extraction of potassium sulfate from salt lake brine
A technology of salt lake brine and potassium sulfate, applied in the field of salt chemical industry, can solve the problems of low added value, waste of resources, etc., and achieve the effects of reducing the amount brought in, saving production costs, and high product yield
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Embodiment 1
[0040] In this embodiment, the potassium-containing tailings after extracting potassium sulfate from salt lake brine are selected from a domestic Xinjiang salt lake potassium sulfate factory, and the composition of potassium chloride flotation tailings is: K + 3.883%, Mg 2+ 5.015%, Cl - 27.40%, SO 4 2- 21.55%, Na + 16.30%, H 2 O25.85%; langbeinite flotation tailings composition is: K + 4.673%, Mg 2+ 2.520%, Cl - 45.77%, SO 4 2- 11.10%, Na + 27.48%, H 2 O8.455%.
[0041] (1) Separating the potassium chloride flotation tailings through a vibrating screen (controlling the sieve particle size to -20 mesh), the sieve material accounts for 44.02% of the potassium chloride flotation tailings mass, and the underscreen material accounts for 44.02% of the potassium chloride flotation tailings mass. 55.98% of the quality of flotation tailings, the composition of the sieve is: K + 1.962%, Mg 2+ 6.932%, Cl - 21.67%, SO 4 2- 25.84%, Na + 12.13%, H 2 O31.47%, the undersiev...
Embodiment 2
[0048] In this embodiment, the potassium-containing tailings after extracting potassium sulfate from salt lake brine are selected from a domestic Qinghai salt lake potassium sulfate factory, and the composition of potassium chloride flotation tailings is: K + 3.195%, Mg 2+ 3.824%, Cl - 35.85%, SO 4 2- 13.01%, Na + 24.34%, H 2 O20.47%; langbeinite flotation tailings composition is: K + 2.690%, Mg 2+ 1.520%, Cl - 46.06%, SO 4 2- 7.550%, Na + 28.88%, H 2 O13.30%.
[0049] (1) Separating the potassium chloride flotation tailings through a vibrating screen (controlling the sieve particle size to -40 mesh), the sieve material accounts for 21.37% of the potassium chloride flotation tailings mass, and the underscreen material accounts for 21.37% of the potassium chloride flotation tailings mass. 78.63% of the quality of the flotation tailings, the composition of the sieve is: K + 0.863%, Mg 2+ 4.174%, Cl - 45.33%, SO 4 2- 15.25%, Na + 28.09%, H 2 O6.30%, the undersi...
Embodiment 3
[0057] In this embodiment, the potassium-containing tailings after extracting potassium sulfate from salt lake brine are selected from a domestic Qinghai salt lake potassium sulfate factory, and the composition of potassium chloride flotation tailings is: K + 2.166%, Mg 2+ 4.903%, Cl - 28.00%, SO 4 2- 17.18%, Na + 15.661%, H 2 O32.09%; langbeinite flotation tailings composition is: K + 2.467%, Mg 2+ 2.322%, Cl - 40.96%, SO 4 2- 8.138%, Na + 24.46%, H 2 O21.65%.
[0058] (1) Separating the potassium chloride flotation tailings through a vibrating screen (controlling the sieve size to -20 mesh), the sieve material accounts for 27.78% of the potassium chloride flotation tailings mass, and the underscreen material accounts for 27.78% of the potassium chloride flotation tailings mass. 72.22% of the quality of flotation tailings, the composition of the sieve is: K + 0.954%, Mg 2+ 3.243%, Cl - 44.33%, SO 4 2- 15.25%, Na + 29.16%, H 2 O7.060%, the undersieve composi...
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