高钛重矿渣用作地坪耐磨骨料的综合评价与应用技术研究

Comprehensive Evaluation and Application Technology Research on High-Titanium Heavy Slag Used as Floor Wear-Resistant Aggregates

摘要: 为综合评价高钛重矿渣用作地坪耐磨骨料的技术经济性，以市售硅砂和锡钛合金为参照，共设置纯硅砂、纯锡钛合金及二者分别与高钛重矿渣按1:1复配五组方案，系统测试了砂浆的力学性能和耐磨性能。在五组对比中，纯高钛重矿渣组的28 d抗压强度(110.3 MPa)和耐磨度比(468%)均为最高，分析认为其突出的耐磨性能与矿渣粗糙多孔表面同水泥浆体之间形成的强机械啮合有关；经济上，其原材料成本仅120元/吨，面层材料成本较硅砂体系降低25%~35%。综合考虑，高钛重矿渣兼具优异的耐磨性和明显的成本优势，是替代传统耐磨骨料的理想备选材料。本文同时还对优化级配和硅烷表面改性工艺进行了探讨。

Abstract: In order to comprehensively evaluate the technical economy of high-titanium heavy slag as a wear-resistant aggregate for flooring, with reference to the commercially available silica sand and tin-titanium alloy, a total of pure silica sand, pure tin-titanium alloy and the two are set up with high-titanium heavy slag according to 1:1, and the mechanical properties and wear resistance of mortar are systematically tested. Among the five groups of comparisons, the 28 d compressive strength (110.3 MPa) and wear resistance ratio (468%) of the pure high titanium heavy slag group are the highest. The analysis believes that its outstanding wear resistance is related to the strong mechanical interlocking formed between the rough porous surface of the slag and the slurry. Economically, the cost of its raw materials is only 120 yuan/ton, and the cost of surface materials is 25% to 35% lower than that of the silica sand system. Comprehensively considered, high-titanium heavy slag has both excellent wear resistance and obvious cost advantages, and is an ideal alternative material to replace traditional wear-resistant aggregates. This paper also discusses the optimization of grading and silane surface modification process.