Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-water-resistance low-toxicity phosphogypsum curing agent and preparation method thereof
The invention belongs to the field of curing agents, and discloses a high-water-resistance and low-toxicity phosphogypsum curing agent which comprises the following components: ground phosphorus slag, calcined red sandstone powder, a cementing agent, a waterproof agent and a toxicity reducing agent. The cementing agent is prepared by mixing and grinding sodium alginate, cement kiln ash, red mud, alunite powder, sodium silicate powder, agar and the like. The waterproof agent is formed by compounding one or more of sodium methyl silicate, polyacrylate and nano silicon dioxide. The toxicity reducing agent is formed by mixing petroleum coke desulfurization ash, slaked lime and carbide slag. The curing agent is applied to curing of phosphogypsum. The unconfined compressive strength of a cured ardealite roadbed material sample is greatly improved, the maximum softening coefficient reaches 0.8 or above, the leaching concentration of fluorine and phosphorus can meet the first-level limit value of GB 8978-1996 Integrated Wastewater Discharge Standard, the curing effect is remarkable, the process is simple, energy is saved, the environment is protected, and the ardealite roadbed material has wide application prospects.
本发明属于固化剂领域，公开了一种高耐水性低毒性的磷石膏固化剂，成分包括磨细磷渣、煅烧红砂岩粉、胶结剂、防水剂、降毒剂。胶结剂包括海藻酸钠、水泥窑灰、赤泥、明矾石粉、硅酸钠粉、琼脂等混合粉磨而成。防水剂由甲基硅酸钠、聚丙烯酸酯和纳米二氧化硅中的一种或多种复合而成的。降毒剂由石油焦脱硫灰、消石灰、电石渣混合而成。本发明将该固化剂应用于固化磷石膏。固化后的磷石膏路基材料试样的无侧限抗压强度大幅提升，软化系数最高达到0.8以上，氟、磷的浸出浓度可满足GB 8978—1996《污水综合排放标准》一级限值，固化效果显著，且工艺简单、节能环保，具有广泛的应用前景。
High-water-resistance low-toxicity phosphogypsum curing agent and preparation method thereof
The invention belongs to the field of curing agents, and discloses a high-water-resistance and low-toxicity phosphogypsum curing agent which comprises the following components: ground phosphorus slag, calcined red sandstone powder, a cementing agent, a waterproof agent and a toxicity reducing agent. The cementing agent is prepared by mixing and grinding sodium alginate, cement kiln ash, red mud, alunite powder, sodium silicate powder, agar and the like. The waterproof agent is formed by compounding one or more of sodium methyl silicate, polyacrylate and nano silicon dioxide. The toxicity reducing agent is formed by mixing petroleum coke desulfurization ash, slaked lime and carbide slag. The curing agent is applied to curing of phosphogypsum. The unconfined compressive strength of a cured ardealite roadbed material sample is greatly improved, the maximum softening coefficient reaches 0.8 or above, the leaching concentration of fluorine and phosphorus can meet the first-level limit value of GB 8978-1996 Integrated Wastewater Discharge Standard, the curing effect is remarkable, the process is simple, energy is saved, the environment is protected, and the ardealite roadbed material has wide application prospects.
本发明属于固化剂领域，公开了一种高耐水性低毒性的磷石膏固化剂，成分包括磨细磷渣、煅烧红砂岩粉、胶结剂、防水剂、降毒剂。胶结剂包括海藻酸钠、水泥窑灰、赤泥、明矾石粉、硅酸钠粉、琼脂等混合粉磨而成。防水剂由甲基硅酸钠、聚丙烯酸酯和纳米二氧化硅中的一种或多种复合而成的。降毒剂由石油焦脱硫灰、消石灰、电石渣混合而成。本发明将该固化剂应用于固化磷石膏。固化后的磷石膏路基材料试样的无侧限抗压强度大幅提升，软化系数最高达到0.8以上，氟、磷的浸出浓度可满足GB 8978—1996《污水综合排放标准》一级限值，固化效果显著，且工艺简单、节能环保，具有广泛的应用前景。
High-water-resistance low-toxicity phosphogypsum curing agent and preparation method thereof
一种高耐水性低毒性磷石膏固化剂及制备方法
HUANG XUQUAN (Autor:in) / CAI JIAWEI (Autor:in) / XUE FEI (Autor:in) / TAN YUNZHI (Autor:in) / ZHAO XIAORONG (Autor:in) / WANG HAOJIE (Autor:in) / WANG JUN (Autor:in) / YU HAO (Autor:in)
05.07.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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