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周龙, 周素莲, 马华菊. 铅锌尾矿免蒸免烧砖的制备及性能[J]. 矿产综合利用, 2022, 43(3): 12-16. doi: 10.3969/j.issn.1000-6532.2022.03.003
引用本文: 周龙, 周素莲, 马华菊. 铅锌尾矿免蒸免烧砖的制备及性能[J]. 矿产综合利用, 2022, 43(3): 12-16. doi: 10.3969/j.issn.1000-6532.2022.03.003
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Zhou Long, Zhou Sulian, Ma Huaju. Study on the Preparation and Performance of Lead-Zinc Mine Steam-free and Burn-free Brick[J]. Multipurpose Utilization of Mineral Resources, 2022, 43(3): 12-16. doi: 10.3969/j.issn.1000-6532.2022.03.003
Citation: Zhou Long, Zhou Sulian, Ma Huaju. Study on the Preparation and Performance of Lead-Zinc Mine Steam-free and Burn-free Brick[J]. Multipurpose Utilization of Mineral Resources, 2022, 43(3): 12-16. doi: 10.3969/j.issn.1000-6532.2022.03.003
shu

铅锌尾矿免蒸免烧砖的制备及性能

  • 桂林理工大学 南宁分校，广西　南宁　530001

  • 基金项目: 广西科技基地与人才专项（桂科AD17129007）
详细信息
    作者简介: 周龙（1988-），男，硕士，讲师，主要从事固体废弃物资源化利用研究。

  • 中图分类号: TD982

Study on the Preparation and Performance of Lead-Zinc Mine Steam-free and Burn-free Brick

  • Guilin University of Technology at Nanning, Nanning, Guangxi, China

    摘要

  • 以铅锌尾矿为主要原料，掺入石膏、石粉、水泥制备免烧砖，考察了各组分含量和用水量对免烧砖性能影响。结果显示，较佳成型水分为14%，成型压力为20 MPa，尾矿∶石膏∶水泥∶石粉＝2.5∶1.5∶1∶5时，制备的免烧砖满足《非烧结垃圾尾矿砖》MU25级别要求，固废使用量达到25%，实现了固体废弃物的资源化。

    Using tailings, gypsum, cement and stone powder to prepare the no-fire brick, the mechanical properties are discussed by change of the proportion of tailings、gypsum、cement and stone powder, and the dosage of the water. The results show that the best preparation condition is that the proportion of tailings、gypsum、cement and stone powder being 2.5∶1.5∶1∶5, the water consumption accounting for 14% of the total solid materials. The prepared non-fired bricks can meet the standard requirements of iron tailings, the use of solid waste reached 25%, realizing the recycling of solid waste.

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  • 图 1  免烧砖制备工艺流程

    Figure 1. 

    下载: 全尺寸图片 幻灯片

    图 2  铅锌尾矿的XRD图谱

    Figure 2. 

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    图 3  石膏的XRD图谱

    Figure 3. 

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    图 4  尾矿含量对抗压强度和吸水率的影响

    Figure 4. 

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    图 5  石膏含量对试样性能的影响

    Figure 5. 

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    图 6  用水量对试样性能的影响

    Figure 6. 

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    图 7  免烧砖的XRD图谱

    Figure 7. 

    下载: 全尺寸图片 幻灯片

    表 1  粒级分布

    Table 1.  Particle size distribution

    粒级/mm+0.600-0.600
    +0.300    		-0.300
    +0.150    		-0.150
    +0.075    		-0.075
    含量/%16.3818.818.541.7854.40
    下载: 导出CSV
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出版历程
收稿日期:  2020-05-30
修回日期:  2020-06-24
刊出日期:  2022-06-25

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