Anhydrous potassium carnallite and preparation method and application thereof
A carnallite and potassium chloride technology, applied in chemical instruments and methods, magnesium halide, inorganic chemistry, etc., can solve the problems of complex production process, small selection range of raw materials, and high magnesium oxide content, and reduce environmental protection input costs. , the production process is short, the effect of high purity
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Embodiment 1
[0054] Mix 3.50g of magnesium oxide, 10.77g of ammonium chloride and 6.52g of potassium chloride and add them into a 50ml crucible. Cover the crucible and keep it at 300°C for 1.5 hours, then keep it at 450°C for 2.0 hours to obtain anhydrous potassium carnallite. In this embodiment, based on the addition of 1.00 parts by weight of magnesium oxide, the addition of ammonium chloride is 3.08 parts by weight, and the addition of potassium chloride is 1.86 parts by weight.
[0055] The obtained anhydrous potassium carnallite was characterized according to the above measurement method. The result is as follows:
[0056] Carry out XRD phase analysis on the sample composition, the composition is anhydrous KMgCl 3 ,Such as figure 2 shown.
[0057] XRD analysis was performed on the precipitate after the sample was dissolved in water, and the composition was magnesium oxide. The content of magnesia is titrated, and the content of magnesia is 0.41%.
[0058] The moisture content i...
Embodiment 2
[0060] Mix 3.50g of magnesium oxide, 11.70g of ammonium chloride and 6.52g of potassium chloride and add them into a 50ml crucible. Cover the crucible and keep it at 300°C for 2.0 hours, then keep it at 480°C for 2.0 hours to obtain anhydrous potassium carnallite. In this embodiment, based on the addition of 1.00 parts by weight of magnesium oxide, the addition of ammonium chloride is 3.34 parts by weight, and the addition of potassium chloride is 1.86 parts by weight.
[0061] The obtained anhydrous potassium carnallite was characterized according to the above measurement method. The result is as follows:
[0062] Carry out XRD phase analysis on the sample composition, the composition is anhydrous KMgCl 3 .
[0063] XRD analysis was performed on the precipitate after the sample was dissolved in water, and the composition was magnesium oxide. The content of magnesia is titrated, and the content of magnesia is 0.34%.
[0064] The moisture content in the sample was measured...
Embodiment 3
[0066] Mix 3.50g of magnesium oxide, 14.04g of ammonium chloride and 6.52g of potassium chloride and add them into a 50ml crucible. Cover the crucible and keep it at 300°C for 2.0 hours, then keep it at 480°C for 2.0 hours to obtain anhydrous potassium carnallite. In this embodiment, based on the addition of 1.00 parts by weight of magnesium oxide, the addition of ammonium chloride is 4.01 parts by weight, and the addition of potassium chloride is 1.86 parts by weight.
[0067]The obtained anhydrous potassium carnallite was characterized according to the above measurement method. The result is as follows:
[0068] Carry out XRD phase analysis on the sample composition, the composition is anhydrous KMgCl 3 .
[0069] XRD analysis was performed on the precipitate after the sample was dissolved in water, and the composition was magnesium oxide. The content of magnesia is titrated, and the content of magnesia is 0.18%.
[0070] The moisture content in the sample was measured,...
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