Method for preparing potash manure (kali salt) from potassium-rich rock using hydrothermal chemical reaction
A potassium-rich rock, chemical reaction technology, applied in chemical instruments and methods, potash fertilizers, inorganic chemistry, etc., can solve the problems of limited raw material range and high cost, and achieve the effects of low energy consumption, reduced production cost, and convenient operation.
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Embodiment 1
[0045] (1) Select raw materials, including:
[0046] Potassium-rich rock: collected from Nanshan, Miyun County, Beijing, its chemical composition (%) is as follows: SiO 2 TiO 2 al 2 O Fe2O 3 +FeO MnO 2 CaO MgO K 2 O Na 2 OP 2 O loss on ignition Total
[0047] 3 560.78 0.75 17.07 4.98 0.02 0.15 0.39 13.48 0.22 0.06 1.96 99.86
[0048] X-ray powder crystal diffraction analysis indicates that the mineral composition of the potassium-rich rock is mainly potassium feldspar, and the others are quartz.
[0049] Dolomite lime: containing 53.23% CaO, 36.27% MgO, and 8.07% loss on ignition, taken from the Babaoshan Limestone Mine in Huailai County, Hebei Province.
[0050] Hemihydrate gypsum: purchased from the market.
[0051] (2) Put 5.000g of potassium-rich rock coarse powder, 5.000g of lime coarse powder, and 1.000g of hemihydrate gypsum into a vibrating grinder to fully grind them so that the particle size of the above materials reaches below 200 mes...
Embodiment 2
[0059] (1) Select raw materials, including:
[0060] Potassium-rich rock: collected from Nanshan, Miyun County, Beijing, its chemical composition (%) is as follows: SiO 2 TiO 2 al 2 O Fe 2 o 3 +FeO MnO 2 CaO MgO K 2 O Na 2 OP 2 O loss on ignition Total
[0061]3 560.78 0.75 17.07 4.98 0.02 0.15 0.39 13.48 0.22 0.06 1.96 99.86
[0062] X-ray powder crystal diffraction analysis indicates that the mineral composition of the potassium-rich rock is mainly potassium feldspar, and the others are quartz.
[0063] Lime: CaO content 97%, purchased from the market.
[0064] Hemihydrate gypsum: purchased from the market.
[0065] (2) Put 5.000g of potassium-rich rock coarse powder, 5.000g of lime coarse powder, and 1.000g of hemihydrate gypsum into a vibrating grinder to fully grind them so that the particle size of the above materials reaches below 200 mesh, mix them evenly, and add them to a plastic container 16.5ml of water, then transfer the material to a plastic con...
Embodiment 3
[0073] (1) Select raw materials, including:
[0074] Potassium-rich rock: collected from Nanshan, Miyun County, Beijing, its chemical composition (%) is as follows: SiO 2 TiO 2 al 2 O Fe 2 o 3 +FeO MnO 2 CaO MgO K 2 O Na 2 OP 2 O loss on ignition Total
[0075] 3 560.78 0.75 17.07 4.98 0.02 0.15 0.39 13.48 0.22 0.06 1.96 99.86
[0076] X-ray powder crystal diffraction analysis indicates that the mineral composition of the potassium-rich rock is mainly potassium feldspar, and the others are quartz.
[0077] Light-burned magnesia: containing 68.27% MgO, 4.17% CaO, and 4.50% loss on ignition, obtained from Dashiqiao Magnesite Factory of Yingkou Magnesite Chemical (Group) Co., Ltd., Liaoning Province.
[0078] Hemihydrate gypsum: purchased from the market.
[0079] (2) Put 10.000g of potassium-rich rock coarse powder, 10.000g of lightly burned magnesia coarse powder, and 2.000g of hemihydrate gypsum into a vibrating grinder for dry grinding, so that ...
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