A kind of magnesium oxide-based desulfurizer and preparation method thereof
A magnesium oxide-based desulfurizer technology, applied in chemical instruments and methods, separation methods, ceramic products, etc., can solve the problems of high cost of magnesium oxide desulfurizers, low desulfurization efficiency of calcium-based desulfurizers, and large pollution emissions. To achieve the effect of good economic benefits, excellent performance and excellent performance
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Embodiment 1
[0031] This embodiment provides a magnesium oxide-based desulfurizer, and the preparation method of the magnesium oxide-based desulfurizer includes the following steps:
[0032] (1) Take magnesite tailings with a magnesium oxide content of ≤43.0%, crush them with a jaw crusher, put them into a ball mill for ball milling, add chemicals for desiliconization and decalcification, and obtain tailings slurry with a fineness of 120 mesh ;
[0033] (2) The tailings slurry is fed into the flash dryer through the raw material feeder for drying, and the dried powder is fed into the suspension kiln, and is suspended and calcined at 1100°C for 50 minutes to obtain a fineness of 200 mesh with a pass rate of 95%, activity ≥75% active lightly burned magnesia powder (citric acid method activity measurement time 18 seconds) (wherein, such as figure 2 Shown, the fineness distribution of the activated light-burned magnesia powder that obtains is uniform);
[0034] (3) Add 500 parts by weight o...
Embodiment 2
[0036] This embodiment provides a magnesium oxide-based desulfurizer, and the preparation method of the magnesium oxide-based desulfurizer includes the following steps:
[0037](1) Take magnesite tailings with a magnesium oxide content of ≤43.0%, crush them with a jaw crusher, put them into a ball mill for ball milling, add chemicals for desiliconization and decalcification, and obtain tailings slurry with a fineness of 120 mesh ;
[0038] (2) The tailings slurry is fed into the flash dryer for drying through the raw material feeder, and the dried powder is fed into the suspension kiln, and is suspended and calcined at 850°C for 30 minutes to obtain a fineness of 200 mesh with a pass rate of 95%, activity ≥75% active light-burned magnesia powder;
[0039] (3) Add 500 parts by weight of activated light-burned magnesia powder obtained in step (2), 20 parts by weight of pore-forming agent talcum powder, and 480 parts by weight of water, and mix uniformly to prepare a magnesium o...
Embodiment 3
[0041] This embodiment provides a magnesium oxide-based desulfurizer, and the preparation method of the magnesium oxide-based desulfurizer includes the following steps:
[0042] (1) Take magnesite tailings with a magnesium oxide content of ≤43.0%, crush them with a jaw crusher, put them into a ball mill for ball milling, add chemicals for desiliconization and decalcification, and obtain tailings slurry with a fineness of 120 mesh ;
[0043] (2) The tailings slurry is fed into the flash dryer through the raw material feeder for drying, and the dried powder is fed into the suspension kiln, and is suspended and calcined at 1100°C for 50 minutes to obtain a fineness of 200 mesh with a pass rate of 95%, activity ≥75% active light-burned magnesia powder;
[0044] (3) Add 500 parts by weight of active light-burned magnesia powder obtained in step (2), 50 parts by weight of pore-forming agent talcum powder, and 520 parts by weight of water, and mix uniformly to prepare a magnesium ox...
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