Cement Filling Material for Co-solidifying Antimony and Preparation Method Thereof

• Main Authors: Ni, Wen, Zhang, Yuying, Gao, Wei, Li, Yunyun, Wang, Ke, Yan, Qihui
• Format: Patent
• Language: English
• Published: 18.03.2021
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; DISPOSAL OF SOLID WASTE; LIME, MAGNESIA; METALLURGY; PERFORMING OPERATIONS; RECLAMATION OF CONTAMINED SOIL SOIL; REFRACTORIES; SLAG; TRANSPORTING; TREATMENT OF NATURAL STONE

The invention relates to a cement filling material for co-solidifying antimony and a preparation method thereof, and belongs to the field of environmental protection of mine cement filling, solid waste resource utilization and synergetic treatment for antimony containing solid wastes. The preparation method comprises the following steps: milling the required raw materials, i.e., steel slag, desulfurization gypsum and blast furnace slag, with 0.01%-1% of moisture content according to the dry basis weight percentage of 45%-80%, 5%-20% and 10%-40%, milling independently or milling by mixed powder until the specific surface area is 200-600 m /Kg, and uniformly mixing to obtain a cementing agent; drying the antimony-containing solid wastes until the moisture content is 0.01%-1%, grinding to the specific surface area of 100-1000m /Kg, according to the weight ratio of the cementing agent/aggregate of 1/8-1/2, the weight ratio of the antimony-containing solid wastes/(cementing agent + aggregate) of 1/100-1/2, adding 0%-1% of water reducing agent, until the mass fraction of slurry is 65%-82%, and uniformly stirring to obtain the qualified mine cement filling material. The preparation method provided by the invention has the advantages of simple and easy operation, low energy consumption, low cost, no new solid waste generation, less environmental pollution and environmental protection.