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Iron tailing activation method and multi-solid-waste iron tailing concrete
The invention belongs to the technical field of building material and solid waste resource utilization, and relates to an iron tailing activation method and iron tailing-containing multi-solid-waste concrete. A multi-solid-waste admixture comprises 20-30 parts of iron tailing powder, 10-15 parts of a calcium phase admixture, 10-15 parts of an aluminum phase admixture, 4-5 parts of a composite activator, and 1-2 parts of a grinding aid. The multi-solid-waste admixture is used as an auxiliary cementing material, and each cubic meter of the multi-solid-waste concrete is prepared from the following components in proportion: 310-336 kg of cement, 144-170 kg of the multi-solid-waste admixture, 492-517 kg of machine-made sand, 221-281 kg of natural sand, 1020-1055 kg of machine-made stone, 1.2-1.5% of an air-entraining and water-reducing agent (with respect to the total amount of the cementing material) and 177-186 kg of water. The iron tailings are activated in a composite activation mode of microwave irradiation, mechanical grinding and chemical excitation, the activity index of the admixture can be well increased, a large amount of solid waste is used, the comprehensive utilization rate of the iron tailings is increased, consumption of natural resources is reduced, and the concrete is more environmentally friendly.
发明属于建材与固体废弃物资源化利用技术领域，涉及了一种铁尾矿活化方式及含铁尾矿多固废混凝土，多固废掺合料包括铁尾矿粉20‑30份、钙相掺合料10‑15份、铝相掺合料10‑15份、复合激活剂4‑5份、助磨剂1‑2份；用多固废掺合料作为辅助胶凝材料，并以以下配比制备多固废混凝土，每方混凝土需水泥310‑336kg、多固废掺合料144‑170kg、机制砂492‑517kg、天然砂221‑281kg、机制石1020‑1055kg、引气减水剂1.2‑1.5%（占胶凝材料总量）、水177‑186kg，经过微波辐照、机械研磨、化学激发复合活化方式对铁尾矿进行活化，可以较好的提高掺合料的活性指数，且使用了大量的固废，提高了铁尾矿的综合利用率，减少了天然资源的耗费，对环境更加友好。
Iron tailing activation method and multi-solid-waste iron tailing concrete
The invention belongs to the technical field of building material and solid waste resource utilization, and relates to an iron tailing activation method and iron tailing-containing multi-solid-waste concrete. A multi-solid-waste admixture comprises 20-30 parts of iron tailing powder, 10-15 parts of a calcium phase admixture, 10-15 parts of an aluminum phase admixture, 4-5 parts of a composite activator, and 1-2 parts of a grinding aid. The multi-solid-waste admixture is used as an auxiliary cementing material, and each cubic meter of the multi-solid-waste concrete is prepared from the following components in proportion: 310-336 kg of cement, 144-170 kg of the multi-solid-waste admixture, 492-517 kg of machine-made sand, 221-281 kg of natural sand, 1020-1055 kg of machine-made stone, 1.2-1.5% of an air-entraining and water-reducing agent (with respect to the total amount of the cementing material) and 177-186 kg of water. The iron tailings are activated in a composite activation mode of microwave irradiation, mechanical grinding and chemical excitation, the activity index of the admixture can be well increased, a large amount of solid waste is used, the comprehensive utilization rate of the iron tailings is increased, consumption of natural resources is reduced, and the concrete is more environmentally friendly.
发明属于建材与固体废弃物资源化利用技术领域，涉及了一种铁尾矿活化方式及含铁尾矿多固废混凝土，多固废掺合料包括铁尾矿粉20‑30份、钙相掺合料10‑15份、铝相掺合料10‑15份、复合激活剂4‑5份、助磨剂1‑2份；用多固废掺合料作为辅助胶凝材料，并以以下配比制备多固废混凝土，每方混凝土需水泥310‑336kg、多固废掺合料144‑170kg、机制砂492‑517kg、天然砂221‑281kg、机制石1020‑1055kg、引气减水剂1.2‑1.5%（占胶凝材料总量）、水177‑186kg，经过微波辐照、机械研磨、化学激发复合活化方式对铁尾矿进行活化，可以较好的提高掺合料的活性指数，且使用了大量的固废，提高了铁尾矿的综合利用率，减少了天然资源的耗费，对环境更加友好。
Iron tailing activation method and multi-solid-waste iron tailing concrete
一种铁尾矿活化方式及多固废铁尾矿混凝土
GU XIAOWEI (author) / LI XIAOHUI (author) / ZHANG WEIFENG (author) / WANG QING (author) / XU XIAOCHUAN (author)
2021-07-23
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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