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PCT/JP2018/024590 There is provided steelmaking slag for fertilizer raw material, containing, in mass%, P20 5: more than or equal to 2% and less than or equal to 8%, MnO: more than or equal to 3% and less than or equal to 10%, boron: more than or equal to 5 0.005% and less than 0.05%, the total iron: more than or equal to 15% and less than or equal to 30%, CaO: more than or equal to 29% and less than 38%, Si0 2 : more than or equal to 16% and less than 22%, sulfur: more than or equal to 0.1% and less than or equal to 0.6%, MgO: more than or equal to 4% and less than or equal to 8%, and A1203 : more than or equal to 0. 5 % and less than or equal to 3%. A ratio of 10 soluble P20 5 in the P205 is more than or equal to 50%, a ratio of citric acid-soluble MnO in the MnO is more than or equal to 80%, a slag basicity expressed by (a CaO content/a Si2 content) is more than 1.5 and less than or equal to 2.2, and a bulk specific gravity is more than or equal to 2.3 and less than or equal to 3.2.
PCT/JP2018/024590 There is provided steelmaking slag for fertilizer raw material, containing, in mass%, P20 5: more than or equal to 2% and less than or equal to 8%, MnO: more than or equal to 3% and less than or equal to 10%, boron: more than or equal to 5 0.005% and less than 0.05%, the total iron: more than or equal to 15% and less than or equal to 30%, CaO: more than or equal to 29% and less than 38%, Si0 2 : more than or equal to 16% and less than 22%, sulfur: more than or equal to 0.1% and less than or equal to 0.6%, MgO: more than or equal to 4% and less than or equal to 8%, and A1203 : more than or equal to 0. 5 % and less than or equal to 3%. A ratio of 10 soluble P20 5 in the P205 is more than or equal to 50%, a ratio of citric acid-soluble MnO in the MnO is more than or equal to 80%, a slag basicity expressed by (a CaO content/a Si2 content) is more than 1.5 and less than or equal to 2.2, and a bulk specific gravity is more than or equal to 2.3 and less than or equal to 3.2.
Steelmaking slag for fertilizer raw material, method for producing steelmaking slag for fertilizer raw material, method for producing fertilizer, and fertilizer application method
ITO KIMIO (author)
2019-09-19
Patent
Electronic Resource
English
Application of BOF Steelmaking Slag as a Partial Replacement of Agricultural Fertilizer
| Springer Verlag | 2024
Application of BOF Steelmaking Slag as a Partial Replacement of Agricultural Fertilizer
| Springer Verlag | 2024