Preparation method of high-activity steel slag admixture

• Main Authors: HU XIANZHU, PENG JIANWEI, YU JINNAN, CHEN YITAO, YAO JIANAN, WU CHENGHAO, HUANG HAI, WEN JIANFENG, WANG CHUNMAN, WANG ZHIYONG, ZHU ZONGJIAN, LEE SEO-IL, LIN CHUNHONG, TANG JIE, FAN DONGDONG
• Format: Patent
• Language: Chinese; English
• Published: 01.09.2023
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

The invention discloses a preparation method of a high-activity steel slag admixture, which comprises the following steps: carrying out ball milling on steel slag micro powder, adding an acidic activator solution in a spray form in the ball milling process, adding an alcohol amine compound and an inorganic alkali compound after the specific surface area is greater than or equal to 900m < 2 >/kg, and continuously carrying out ball milling for a period of time, thereby obtaining the high-activity steel slag admixture. The preparation method is simple, the prepared high-activity steel slag admixture does not need to be doped with volcanic ash minerals to improve the activity and can directly replace part of cement to prepare concrete, the doping amount is large, the prepared concrete is high in strength, the mechanical property of the concrete is improved, and the cost of the concrete is reduced. 本发明公开了一种高活性钢渣掺合料的制备方法，包括以下步骤：将钢渣微粉进行球磨，并在球磨的过程中以喷雾的形式加入酸性激发剂溶液，待球磨至比表面积≥900m2/kg后，再加入醇胺类化合物和无机碱类化合物，继续球磨一段时间，即得。本发明制备