A kind of preparation method of cauliflower-shaped calcium sulfite particles
A calcium sulfite, cauliflower-like technology, applied in the direction of calcium/strontium/barium sulfite, etc., to achieve the effects of simple operation, great application value, and environmental protection of raw materials
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Embodiment 1
[0013] Embodiment 1: In 100ml beaker, prepare the calcium chloride solution of 0.1mol / L and the sodium sulfite solution of 0.1mol / L with water respectively, calcium chloride solution and sodium sulfite solution are filtered with 0.45 μm filter membrane respectively, remove undissolved Impurities, collect the filtrate, then dissolve 0.038g of citric acid in 100ml of calcium chloride solution, and adjust the pH of the calcium chloride solution to 10 with 0.5mol / L sodium hydroxide solution to fully deprotonate it. Then sodium sulfite solution was slowly added to an equal volume of calcium chloride solution, and stirred slowly. Finally, the generated calcium sulfite precipitate was filtered, centrifuged, washed alternately with double distilled water and absolute ethanol three times, and fully dried at 60°C. The particle size distribution is 5~10μm, uniform distribution, cauliflower-like calcium sulfite particles.
Embodiment 2
[0014] Embodiment 2: prepare respectively the calcium chloride aqueous solution of 0.2mol / L and the sodium sulfite aqueous solution of 0.2mol / L in the 100ml beaker, filter with 0.45 μm filter membrane then, remove undissolved impurity, then get the lemon of 0.076g Dissolve the acid in 100ml of calcium chloride solution, and adjust the pH of the calcium chloride solution to 10 with 0.5mol / L sodium hydroxide solution to fully deprotonate it. Then sodium sulfite solution was slowly added to an equal volume of calcium chloride solution, and stirred slowly. Finally, the generated calcium sulfite precipitate was filtered, centrifuged, washed alternately with double distilled water and absolute ethanol three times, and fully dried at 60°C. The particle size distribution is 5~10μm, uniform distribution, cauliflower-like calcium sulfite particles.
Embodiment 3
[0015] Embodiment 3: prepare the calcium chloride solution of 0.3mol / L and the sodium sulfite solution of 0.3mol / L with water respectively in the 100ml beaker, filter with 0.45 μm filter membrane then, remove undissolved impurity, then get 0.11g of Dissolve citric acid in 100ml of calcium chloride solution, and adjust the pH of the calcium chloride solution to 10 with 0.5mol / L sodium hydroxide solution to fully deprotonate it. Then sodium sulfite solution was slowly added to an equal volume of calcium chloride solution, and stirred slowly. Finally, the generated calcium sulfite precipitate was filtered, centrifuged, washed alternately with double distilled water and absolute ethanol three times, and fully dried at 60°C. The particle size distribution is 5~10μm, uniform distribution, cauliflower-like calcium sulfite particles.
[0016] The water used to prepare the solutions in the various embodiments of the present invention is double distilled water.
[0017] In each embodi...
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