Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention provides stokehole modified steel slag and a preparation method thereof. According to the invention, steel slag which is discharged from converter steelmaking and has a temperature of 1400 DEG C or above is discharged to a slag tank, and meanwhile, a modifier (limestone powder, sandstone and fly ash) is mixed with the molten steel slag, wherein the particle size of the modifier is smaller than 0.15 mm, the modifier comprises, in percentage by weight, 1%-15% of the limestone powder, 1%-10% of sandstone powder and 1%-10% of the fly ash, and the total addition amount of the modifier is 5-25%; and the total content of CaO and MgO in the chemical components of the steel slag is less than 55%. The modified steel slag can be used as a cement admixture or a concrete admixture and is applied to cement or concrete. The modified steel slag is high in gelation activity, and the preparation method is simple to operate.
一种炉前改性钢渣及其制备方法，将转炉炼钢排出的温度为1400℃以上的钢渣排出到渣罐，同时将改性剂(石灰石粉、砂岩以及粉煤灰)与熔融态钢渣混合，改性剂的粒径均小于0.15mm，其组分与含量分别为石灰石粉1％‑15％、砂岩粉1％‑10％、粉煤灰1％‑10％，总加入量为5％‑25％。钢渣化学成分中CaO和MgO含量总和应小于55％。本发明的改性钢渣可以作为水泥混合材或混凝土掺合料，应用于水泥或混凝土中。本发明的改性钢渣胶凝活性高，制备方法操作简单。
The invention provides stokehole modified steel slag and a preparation method thereof. According to the invention, steel slag which is discharged from converter steelmaking and has a temperature of 1400 DEG C or above is discharged to a slag tank, and meanwhile, a modifier (limestone powder, sandstone and fly ash) is mixed with the molten steel slag, wherein the particle size of the modifier is smaller than 0.15 mm, the modifier comprises, in percentage by weight, 1%-15% of the limestone powder, 1%-10% of sandstone powder and 1%-10% of the fly ash, and the total addition amount of the modifier is 5-25%; and the total content of CaO and MgO in the chemical components of the steel slag is less than 55%. The modified steel slag can be used as a cement admixture or a concrete admixture and is applied to cement or concrete. The modified steel slag is high in gelation activity, and the preparation method is simple to operate.
一种炉前改性钢渣及其制备方法，将转炉炼钢排出的温度为1400℃以上的钢渣排出到渣罐，同时将改性剂(石灰石粉、砂岩以及粉煤灰)与熔融态钢渣混合，改性剂的粒径均小于0.15mm，其组分与含量分别为石灰石粉1％‑15％、砂岩粉1％‑10％、粉煤灰1％‑10％，总加入量为5％‑25％。钢渣化学成分中CaO和MgO含量总和应小于55％。本发明的改性钢渣可以作为水泥混合材或混凝土掺合料，应用于水泥或混凝土中。本发明的改性钢渣胶凝活性高，制备方法操作简单。
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