CN104446209B - 一种环保型活性尾矿微粉复合浆液及其应用 - Google Patents
一种环保型活性尾矿微粉复合浆液及其应用 Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
本发明公开了一种环保型活性尾矿微粉复合浆液及其应用，将铁矿或铅锌矿的尾矿微粉磨细并进行活化处理，使尾矿微粉的比表面积大于400kg/m3，活性大于80%，掺入水泥或化学浆液，按水灰比为0.3~0.8：1配制成活性尾矿微粉复合浆液。该复合浆液活性好，颗粒细，节能环保，造价低廉，使用效果好。
Description
技术领域
本发明属于建筑材料制造技术领域，具体涉及一种环保型活性尾矿微粉复合浆液及其应用。
背景技术
随着我国工程建设的飞速发展，注浆浆液在工程领域需求量巨大。现有的浆液主要为水泥浆液和化学浆液为主，存在如下问题：1、水泥属于高耗能行业，生产水泥耗费大量能源，不利于环境保护。2、一些化学注浆有毒性，会污染地下水。3、现有的水泥浆液或化学浆液价格较高，工程经济性较差。
发明内容
本发明的目的在于提供一种环保型活性尾矿微粉复合浆液及其应用，该复合浆液活性好，颗粒细，节能环保，造价低廉，使用效果好。
为实现上述目的，本发明采用如下技术方案：
一种环保型活性尾矿微粉复合浆液：将铁矿或铅锌矿的尾矿微粉磨细至粒径5~20μm，然后进行活化处理，使尾矿微粉的比表面积大于400kg/m3，活性大于80%，掺入水泥或化学浆液，按水灰比为0.3~0.8：1配制成活性尾矿微粉复合浆液。
所述的活化处理采用高频振动磨，加入30~50wt.%的水泥熟料或10~20 wt.%的熟石膏作为助磨剂，振动幅度3~7mm，振动频率16.3~24.3次/秒，振动时间10分钟；活化处理后尾矿微粉的粒径为3~5μm。
所述的活性尾矿微粉复合浆液用于隧道壁后注浆、盾构管片后注浆、灌注桩桩端及桩侧后注浆、止水帷幕和工程抢险速凝浆液、高压旋喷桩复合地基、水泥土搅拌桩复合地基、锚杆和土钉灌浆。
本发明的显著优点在于：本发明制得的活性尾矿微粉复合浆液对固体废弃物进行资源化利用，可解决大量尾矿堆放占用土体、污染环境等问题，节能环保，工程造价低，效益好。
具体实施方式
一种环保型活性尾矿微粉复合浆液：将铁矿或铅锌矿的尾矿微粉磨细至粒径5~20μm，然后进行活化处理，使尾矿微粉的比表面积大于400kg/m3，活性大于80%，掺入水泥或化学浆液，按水灰比为0.3~0.8：1配制成活性尾矿微粉复合浆液。
所述的活化处理采用高频振动磨，加入30~50wt.%的水泥熟料或10~20 wt.%的熟石膏作为助磨剂，振动幅度3~7mm，振动频率16.3~24.3次/秒，振动时间10分钟；活化处理后尾矿微粉的粒径为3~5μm。
所述的活性尾矿微粉复合浆液用于隧道壁后注浆、盾构管片后注浆、灌注桩桩端及桩侧后注浆、止水帷幕和工程抢险速凝浆液、高压旋喷桩复合地基、水泥土搅拌桩复合地基、锚杆和土钉灌浆。
实施例
1
隧道壁后注浆/盾构管片后注浆
质量比：水：活性尾矿微粉：P.O42.5水泥=0.8:0.7:0.3，28天150mm立方体试块强度21.7MPa，平均流动度24.5mm，粘度计法测得年度（平均流出时间）24.5秒，初凝时间424min，终凝时间710min，平均密度1680kg/m3，用于隧道壁后注浆/盾构管片后注浆，可有效控制隧道开挖引起的围岩变形和地层沉降。
实施例
2
灌注桩桩端/桩侧后注浆
质量比：水：活性尾矿微粉：P.O32.5水泥=0.6:0.6:0.4，28天立方体试块强度12.3MPa，平均流动度17.8mm，粘度计法测得年度（平均流出时间）20.2秒，初凝时间388min，终凝时间640min，平均密度1705kg/m3，在桩体混凝土灌注3~5天内后注浆，注浆压力1~2MPa，单桩承载力最大可提高80%。
实施例
3
止水帷幕/工程抢险速凝浆液
质量比：水：活性尾矿微粉：P.O32.5水泥：水玻璃=0.8:0.4:0.6:0.45，水玻璃40Be，模数2.6~2.8。浆液可控性好，胶凝时间可准确控制几十分钟范围内，适用于止水帷幕施工和隧道涌水、突泥封堵等工程抢险，可达到快速堵漏的目的，也可用于隧道始发井和管片围岩土体加固。
实施例
4
高压旋喷桩复合地基
水泥浆质量比：活性尾矿微粉：P.O42.5水泥：水：减水剂=0.8:2:1:0.011，20~25MPa旋喷压力，单2.5mm喷嘴，提升速度20cm，砂土层中成桩桩径0.6m，成桩质量好，桩体强度可4.7MPa，复合地基承载力比天然地基提高50%~110%。
实施例
5
水泥土搅拌桩复合地基
活性尾矿微粉和P.O42.5水泥质量比3:7，正方形布桩，桩径0.5m，胶凝材料掺入比16%，采用2喷4搅施工工艺，桩体强度平均值可达2.5MPa，复合地基承载力比天然地基提高60%~150%。
实施例
6
锚杆和土钉灌浆
质量比：水：活性尾矿微粉：P.O42.5水泥=0.8:0.7:0.3，28天150mm立方体试块强度21.7MPa，平均流动度24.5mm，粘度计法测得年度（平均流出时间）24.5秒，初凝时间424min，终凝时间710min，平均密度1680kg/m3，用于深基坑和边坡支护的锚杆或土钉锚固体灌浆。
以上所述仅为本发明的较佳实施例，凡依本发明申请专利范围所做的均等变化与修饰，皆应属本发明的涵盖范围。
Claims (3)
1.一种环保型活性尾矿微粉复合浆液，其特征在于：铁矿或铅锌矿的尾矿微粉经研磨后，进行活化处理，使尾矿微粉的比表面积大于400kg/m3，活性大于80%，掺入水泥或化学浆液，按水灰比为0.3~0.8：1配制成活性尾矿微粉复合浆液；所述的活化处理采用高频振动磨，加入30~50wt.%的水泥熟料或10~20 wt.%的熟石膏作为助磨剂，振动幅度3~7mm，振动频率16.3~24.3次/秒，振动时间10分钟；活化处理后尾矿微粉的粒径为3~5μm。
2.根据权利要求1所述的环保型活性尾矿微粉复合浆液，其特征在于：研磨后尾矿微粉的粒径为5~20μm。
3.一种如权利要求1所述的环保型活性尾矿微粉复合浆液的应用，其特征在于：所述的活性尾矿微粉复合浆液用于隧道壁后注浆、盾构管片后注浆、灌注桩桩端及桩侧后注浆、止水帷幕和工程抢险速凝浆液、高压旋喷桩复合地基、水泥土搅拌桩复合地基、锚杆和土钉灌浆。
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| JPH04310583A (ja) * | 1991-04-03 | 1992-11-02 | Nippon Steel Chem Co Ltd | セメント硬化体の製造方法 |
| CN101096303B (zh) * | 2006-06-30 | 2011-09-21 | 富春控股集团有限公司 | 筑路、建筑用快速抢修材料 |
| CN100467418C (zh) * | 2007-06-29 | 2009-03-11 | 郑州祥通耐火陶瓷有限公司 | 锁扣砖用微膨胀注塑料 |
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| CN102924019B (zh) * | 2011-08-11 | 2014-08-13 | 北京建筑材料科学研究总院有限公司 | 一种高强微膨胀灌浆材料及其制备方法 |
| CN103387368B (zh) * | 2013-08-02 | 2015-09-23 | 大连铭源全建材有限公司 | 一种超低温胶凝喷射材料 |
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