Production process of side product barium sulfate with bittern containing sulfate radical
A production process and sulfate radical technology, applied in the direction of calcium/strontium/barium sulfate, etc., can solve problems such as environmental pollution and rising cost of main products, and achieve the effect of reducing production costs
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Embodiment 1
[0018] Take 3M 3 The brine containing sulfate ions of 42g / L is filtered through a sand filter to remove solid particles and suspended matter, and 2.1M 3 The barium chloride solution that barium ion is 92g / L reacts at normal temperature, filters after generating precipitation, and filtrate is used for producing barium chloride, and precipitate is used the potassium sulfate 2.5M of 0.5wt%. 3 The solution was stirred and washed at 60°C, and then filtered; the filtrate was recovered, the precipitate was stirred and washed with demineralized water at 80°C, and filtered for the fourth time; the filtrate was used for recovery, and the precipitate was dried and crushed at 120°C to obtain 0.275 tons of sulfuric acid barium products. The barium sulfate test results are shown in Table 1.
Embodiment 2
[0020] Take 2.8M 3 The brine containing sulfate ions of 35g / L is filtered through a sand filter to remove solid particles and suspended matter, and 1.72M 3 Barium ion is that the barium chloride solution of 85g / L reacts at normal temperature, filters after generating precipitation, and filtrate is used for producing barium chloride, and the potassium sulfate 2M of 2wt% is used for precipitate 3 The solution was stirred and washed at 95°C, and then filtered; the filtrate was recovered, and the precipitate was stirred and washed with demineralized water at 90°C, and filtered for the third time; the filtrate was recovered, and the precipitate was dried and crushed at 100°C to obtain 0.226 tons of barium sulfate product . The barium sulfate test results are shown in Table 1.
Embodiment 3
[0022] Take 2.5M 3 The brine containing sulfate ions of 40g / L is filtered through a sand filter to remove solid particles and suspended matter, and 1.95M 3 Barium ion is that the barium chloride solution of 88g / L reacts at normal temperature, filters after generating precipitation, and filtrate is used for producing barium chloride, and precipitate is with the potassium sulfate 2M of 3wt%. 3 The solution was stirred and washed at 75°C, and then filtered; the filtrate was recovered, and the precipitate was stirred and washed with demineralized water at 85°C, and filtered for the third time; the filtrate was recovered, and the precipitate was dried and crushed at 140°C to obtain 0.233 tons of barium sulfate product . The barium sulfate test results are shown in Table 1.
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