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A platform for research: civil engineering, architecture and urbanism
Modified lithium slag composite mineral admixture and preparation and application thereof
The invention provides a modified lithium slag composite mineral admixture, and belongs to the technical field of building materials. The admixture comprises the following components in parts by mass:40-70 parts of acid-process lithium slag, 20-55 parts of limestone powder, 5-10 parts of an active calcium salt modifier and 0.1-0.2 part of a reinforcing activator. The acid-process lithium slag comprises the following components in percentage by mass: 6-12% of Loss, 45-60% of SiO2, 13-22% of Al2O3, 5-11% of CaO, 3-10% of SO3 and the balance of impurities, wherein the sum of the total mass percentages is 100%. The invention also provides preparation and application of the modified lithium slag composite mineral admixture. According to the admixture disclosed by the invention, the active calcium salt modifier is introduced, and the acidic lithium slag and the limestone powder are compounded, so the defect of performance of the acidic lithium slag is overcome, the performance of concrete can be remarkably improved, and high performance and greenization of the concrete are realized. The modified lithium slag composite mineral admixture provided by the invention can replace existing admixtures such as fly ash, mineral powder and the like, the cement consumption is reduced, the concrete production cost is further reduced, and the modified lithium slag composite mineral admixture has obvious economic benefits and social benefits.
本发明提供一种改性锂渣复合矿物掺合料，属于建筑材料技术领域。以质量份数计，包括：酸法锂渣40～70份，石灰石粉20～55份，活性钙盐改性剂5～10份，增强活化剂0.1～0.2份。所述酸法锂渣按质量百分比计，包括：Loss：6～12％，SiO2：45～60％，Al2O3：13～22％，CaO：5～11％，SO3：3～10％，余量为杂质，总质量百分含量之和为100％。本发明还提供所述改性锂渣复合矿物掺合料的制备和应用。本发明掺合料引入活性钙盐改性剂，通过复合酸性锂渣和石灰石粉，弥补了酸性锂渣性能的不足，能够显著改善混凝土性能，实现混凝土高性能化和绿色化。本发明提供的改性锂渣复合矿物掺合料可以替代现有的粉煤灰、矿粉等掺合料，降低了水泥用量，进而降低了混凝土生产成本，具有明显的经济效益和社会效益。
Modified lithium slag composite mineral admixture and preparation and application thereof
The invention provides a modified lithium slag composite mineral admixture, and belongs to the technical field of building materials. The admixture comprises the following components in parts by mass:40-70 parts of acid-process lithium slag, 20-55 parts of limestone powder, 5-10 parts of an active calcium salt modifier and 0.1-0.2 part of a reinforcing activator. The acid-process lithium slag comprises the following components in percentage by mass: 6-12% of Loss, 45-60% of SiO2, 13-22% of Al2O3, 5-11% of CaO, 3-10% of SO3 and the balance of impurities, wherein the sum of the total mass percentages is 100%. The invention also provides preparation and application of the modified lithium slag composite mineral admixture. According to the admixture disclosed by the invention, the active calcium salt modifier is introduced, and the acidic lithium slag and the limestone powder are compounded, so the defect of performance of the acidic lithium slag is overcome, the performance of concrete can be remarkably improved, and high performance and greenization of the concrete are realized. The modified lithium slag composite mineral admixture provided by the invention can replace existing admixtures such as fly ash, mineral powder and the like, the cement consumption is reduced, the concrete production cost is further reduced, and the modified lithium slag composite mineral admixture has obvious economic benefits and social benefits.
本发明提供一种改性锂渣复合矿物掺合料，属于建筑材料技术领域。以质量份数计，包括：酸法锂渣40～70份，石灰石粉20～55份，活性钙盐改性剂5～10份，增强活化剂0.1～0.2份。所述酸法锂渣按质量百分比计，包括：Loss：6～12％，SiO2：45～60％，Al2O3：13～22％，CaO：5～11％，SO3：3～10％，余量为杂质，总质量百分含量之和为100％。本发明还提供所述改性锂渣复合矿物掺合料的制备和应用。本发明掺合料引入活性钙盐改性剂，通过复合酸性锂渣和石灰石粉，弥补了酸性锂渣性能的不足，能够显著改善混凝土性能，实现混凝土高性能化和绿色化。本发明提供的改性锂渣复合矿物掺合料可以替代现有的粉煤灰、矿粉等掺合料，降低了水泥用量，进而降低了混凝土生产成本，具有明显的经济效益和社会效益。
Modified lithium slag composite mineral admixture and preparation and application thereof
一种改性锂渣复合矿物掺合料及其制备和应用
ZHANG WUZONG (author) / WANG JUN (author) / ZHANG YUAN (author) / LAN CONG (author) / LIU DONG (author) / LIU XIA (author) / YUAN WENTAO (author) / YANG SHIHAI (author) / ZHU YUN (author)
2020-12-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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