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Steelmaking slag for fertilizer raw material, method for producing steelmaking slag for fertilizer raw material, method for producing fertilizer and fertilizing method
Steelmaking slag for fertilizer raw material, method for producing steelmaking slag for fertilizer raw material, method for producing fertilizer and fertilizing method
[PROBLEMS] To provide a variety of elements as plant fertilizers easily and at low cost without runoff due to water flow even in acidic soils in areas where rainfall is high or rivers are flooded. The steelmaking slag for fertilizer raw material according to the present invention is in mass%, P2O5: 2% to 8%, MnO: 3% to 10%, boron: 0.005% to less than 0.05%, Total iron: 15% to 30%, CaO: 29% to less than 38%, SiO2: 16% to less than 22%, Sulfur: 0.1% to 0.6%, MgO: 4% to 8%, Al2O3: 0.5% or more and 3% or less, the ratio of soluble P2O5 in the P2O5 is 50% or more, the ratio of soluble MnO in the MnO is 80% or more, and (CaO The slag basicity represented by (content / SiO2 content) is more than 1.5 and not more than 2.2, and the bulk specific gravity is not less than 2.3 and not more than 3.2. [Selection figure] None
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机译：［问题］即使在降雨多或河水泛滥的酸性土壤中，也能够容易且低成本地提供多种元素作为植物肥料，而不会因水流而径流。根据本发明的用于肥料原料的炼钢炉渣以质量％计，P 2 O 5：2％至8％，MnO：3％至10％，硼：0.005％至小于0.05％，总铁：15％至30。 ％，CaO：29％至小于38％，SiO2：16％至小于22％，硫：0.1％至0.6％，MgO：4％至8％，Al2O3：0.5％以上且3％以下， P 2 O 5中的可溶性P 2 O 5的比例为50％以上，MnO中的可溶性MnO的比例为80％以上，并且（CaO，以（含量/ SiO 2含量）表示的炉渣碱度为1.5以上且1以下。 2.2，且体积比重不小于2.3且不大于3.2。
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