The preparation method of edible magnesium chloride
A technology of magnesium chloride and potassium chloride, which is applied in the field of food chemistry, can solve problems such as the destruction of the ecological environment of salt lakes, the waste of magnesium resources, and the impurity content of products is easy to exceed the standard, and achieves the effect of easy operation and preparation and loose control conditions
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Embodiment 1
[0018] This embodiment discloses a preparation method of edible magnesium chloride, specifically refer to the following steps:
[0019] In step 1, take 100mL of secondary water as dissolved water, place 300g of solid ore in it and stir, and filter when the dissolution-precipitation equilibrium is reached to obtain the first filter residue and the first filtrate, and use the first filtrate as the first mother liquor for primary evaporation.
[0020] In this embodiment, the solid ore is a by-product bischofite in the salt lake, which is derived from the Chaerhan Salt Lake; obtained simultaneously in the process.
[0021] Specifically, the component analysis of the solid ore was carried out. In this embodiment, three parallel experiments were carried out for testing, which were recorded as G-1 to G-3 respectively; the analysis results are shown in Table 1.
[0022] Table 1 Full analysis results of solid ore components (in mass percent)
[0023]
[0024] Note: In Table 1, "—...
Embodiment 2
[0043] In the description of Embodiment 2, the similarities with Embodiment 1 will not be repeated here, and only the differences with Embodiment 1 will be described. The difference between Example 2 and Example 1 is that in step 1, 100mL of secondary water is taken as dissolved water, 350g of solid ore is placed in it and stirred, and filtered when the dissolution-precipitation equilibrium is reached to obtain the first Filter residue and the first filtrate, take the first filtrate as the first mother liquor; the quality of the obtained first mother liquor is 388.56g; the content analysis results of the main ions of the first mother liquor of this embodiment are shown in Table 4.
[0044] Table 4 Analysis results of main ions in the first mother liquor (in mass percent)
[0045]
[0046] In the first mother liquor, in addition to the above-mentioned ions, the rest are H 2 O.
[0047] In step 2, the mass of water lost through evaporation from the first mother liquor is 17...
Embodiment 3
[0054] In the description of Embodiment 3, the similarities with Embodiment 1 will not be repeated here, and only the differences with Embodiment 1 will be described. The difference between Example 3 and Example 1 is that in step 1, 100mL of secondary water is taken as dissolved water, 500g of solid ore is placed in it and stirred, and filtered when the dissolution-precipitation equilibrium is reached to obtain the first For the filter residue and the first filtrate, take the first filtrate as the first mother liquor; the quality of the obtained first mother liquor is 390.03g; the content analysis results of the main ions of the first mother liquor of this embodiment are shown in Table 6.
[0055] Table 6 Analysis results of main ions in the first mother liquor (in mass percent)
[0056]
[0057] In the first mother liquor, in addition to the above-mentioned ions, the rest are H 2 O.
[0058] In step 2, the mass of water lost through evaporation from the first mother liqu...
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