Calcium-magnesium mineralization filter material and preparation method thereof
A calcium-magnesium and filter material technology, applied in chemical instruments and methods, separation methods, filtration and separation, etc., can solve the problems of unbalanced ratio of calcium and magnesium concentration, inability to increase magnesium content in drinking water, and inability to control the dissolution rate of limestone, etc. To achieve the effect of improving quality and increasing content
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[0038] The embodiment of the present application also provides a preparation method of a calcium-magnesium mineralized filter material, the preparation method comprising the following steps:
[0039] S1. Provide calcite solution, dolomite solution and modified limestone, wherein the particle size of the modified limestone is 60 mesh to 80 mesh, and the total pore volume of the modified limestone is 1.047×10 -2 ~4.859×10 -2 cm 3 / g, and the specific surface area of modified limestone is 4.2m 2 / g~6.7m 2 / g;
[0040] S2. Under the atmosphere of carbon dioxide gas, atomize the calcite solution and the dolomite solution and pass them into the modified limestone, stir and react to obtain the calcium-magnesium mineralized filter material, in the calcium-magnesium ore In the filter material, the mass ratio among modified limestone, recrystallized calcite and recrystallized dolomite is modified limestone: recrystallized calcite: recrystallized dolomite (3-10): 1: (2-3 ).
[00...
Embodiment 1
[0062] This embodiment provides a calcium-magnesium mineralized filter material and a preparation method thereof. The calcium-magnesium mineralized filter material of this embodiment includes a matrix and a coating layer coated on the outer surface of the matrix, wherein the matrix is a modified particle structure Limestone, the cladding layer includes recrystallized calcite and recrystallized dolomite, and the thickness of the cladding layer is 45 μm; the mass ratio between modified limestone, recrystallized calcite and recrystallized dolomite is modified limestone: recrystallized calcite : Recrystallized dolomite is 10:1:2.
[0063] The preparation method of described calcium magnesium mineralization filter material comprises the steps:
[0064] S10, preparation of calcite dissolving solution and dolomite dissolving solution: take by weighing the natural calcite of 10g and the natural dolomite of 10g, then the natural calcite and natural dolomite are broken into granularit...
Embodiment 2
[0074] This embodiment provides a calcium-magnesium mineralized filter material and a preparation method thereof. Compared with the calcium-magnesium mineralized filter material in Example 1, the difference between the calcium-magnesium mineralized filter material in this embodiment is only: calcium-magnesium mineralized filter material The mass ratio of modified limestone, recrystallized calcite and recrystallized dolomite in the mineralized filter material is modified limestone: recrystallized calcite: recrystallized dolomite is 6:1:3.
[0075] Compared with the preparation method of the calcium-magnesium mineralized filter material in Example 1, the difference in the preparation method of the calcium-magnesium mineralized filter material in this embodiment is only: the carbon dioxide gas participating in the reaction in step S30, the calcium in the reaction solution The molar ratio between ions and magnesium ions in the reaction solution is carbon dioxide gas: calcium ions i...
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