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Comprehensive resource utilization method of phosphate tailing waste residues and carbide slag
The invention discloses a comprehensive resource utilization method of phosphate tailing waste residues and carbide slag. The method comprises: calcining the phosphate tailings to remove organic impurities, grinding the calcined phosphate tailings into powder, preparing an acid diluent, uniformly stirring, slowly adding the calcined phosphate tailing powder, heating and stirring until the powder is completely dissolved to obtain a dark brown emulsion, performing suction filtration and washing to obtain brownish yellow acid leaching phosphate tailing waste residues and faint yellow filtrate, and mixing the obtained acid-leached phosphate tailing waste residues, carbide slag and bauxite in proportion, grinding in a vibration mill until the fineness is less than or equal to 75 microns, pressing and forming, calcining for 1-2 hours at the temperature of 1150-1280 DEG C, quickly cooling in liquid nitrogen, grinding again, and doping an additive to obtain the belite sulphoaluminate cement. The obtained belite sulphoaluminate cement has the 3-day compressive strength of 34.64 MPa, the breaking strength of 9.7 MPa, the 28-day compressive strength of 48.7 MPa and the breaking strength of 10.1 MPa.
本发明公开了一种磷尾矿废渣和电石渣的综合资源化利用方法；将磷尾矿煅烧去除有机杂质，研磨煅烧的磷尾矿成粉末；配置酸稀释液，搅拌均匀，缓慢加入煅烧的磷尾矿粉末，升温搅拌直至粉末全部溶解，得到棕褐色乳浊液；抽滤、洗涤得到棕黄色酸浸磷尾矿废渣、淡黄色滤液；所得酸浸磷尾矿废渣、电石渣、铝矾土按比例混合，置于振动磨中粉磨至细度≤75μm，压制成形在1150℃～1280℃下煅烧1h～2h，放置液氮中急速冷却，再次粉磨后掺入外加剂，得到贝利特‑硫铝酸盐水泥。所得贝利特‑硫铝酸盐水泥3天抗压强度34.64MPa，抗折强度9.7MPa，28天抗压强度48.7MPa，抗折强度10.1MPa。
Comprehensive resource utilization method of phosphate tailing waste residues and carbide slag
The invention discloses a comprehensive resource utilization method of phosphate tailing waste residues and carbide slag. The method comprises: calcining the phosphate tailings to remove organic impurities, grinding the calcined phosphate tailings into powder, preparing an acid diluent, uniformly stirring, slowly adding the calcined phosphate tailing powder, heating and stirring until the powder is completely dissolved to obtain a dark brown emulsion, performing suction filtration and washing to obtain brownish yellow acid leaching phosphate tailing waste residues and faint yellow filtrate, and mixing the obtained acid-leached phosphate tailing waste residues, carbide slag and bauxite in proportion, grinding in a vibration mill until the fineness is less than or equal to 75 microns, pressing and forming, calcining for 1-2 hours at the temperature of 1150-1280 DEG C, quickly cooling in liquid nitrogen, grinding again, and doping an additive to obtain the belite sulphoaluminate cement. The obtained belite sulphoaluminate cement has the 3-day compressive strength of 34.64 MPa, the breaking strength of 9.7 MPa, the 28-day compressive strength of 48.7 MPa and the breaking strength of 10.1 MPa.
本发明公开了一种磷尾矿废渣和电石渣的综合资源化利用方法；将磷尾矿煅烧去除有机杂质，研磨煅烧的磷尾矿成粉末；配置酸稀释液，搅拌均匀，缓慢加入煅烧的磷尾矿粉末，升温搅拌直至粉末全部溶解，得到棕褐色乳浊液；抽滤、洗涤得到棕黄色酸浸磷尾矿废渣、淡黄色滤液；所得酸浸磷尾矿废渣、电石渣、铝矾土按比例混合，置于振动磨中粉磨至细度≤75μm，压制成形在1150℃～1280℃下煅烧1h～2h，放置液氮中急速冷却，再次粉磨后掺入外加剂，得到贝利特‑硫铝酸盐水泥。所得贝利特‑硫铝酸盐水泥3天抗压强度34.64MPa，抗折强度9.7MPa，28天抗压强度48.7MPa，抗折强度10.1MPa。
Comprehensive resource utilization method of phosphate tailing waste residues and carbide slag
磷尾矿废渣和电石渣的综合资源化利用方法
LIU QUANTAO (author) / CHEN SHUAICHAO (author) / WU HANJUN (author) / ZHANG DENGFENG (author) / WU SHAOPENG (author) / CHEN MEIZHU (author) / XIE JUN (author)
2021-03-26
Patent
Electronic Resource
Chinese
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