Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of red-mud-based high-sulfur tailing solid waste baking-free brick
The invention discloses a preparation method of a red-mud-based high-sulfur tailing solid waste baking-free brick, which comprises the following steps: (1) mixing red mud, high-sulfur tailing powder and water, heating, preserving heat and continuously stirring; carrying out solid-liquid separation after the reaction is finished, and washing, drying and grinding an obtained solid product to obtain a pretreated mixture; and (2) mixing the alkaline liquid obtained by solid-liquid separation with the washing liquid obtained by washing, and then adding alginic acid powder for neutralization. And then carrying out solid-liquid separation, and collecting a liquid phase to obtain the mixing water. And (3) taking the pretreated mixture, fly ash, aggregate, Portland cement and a water reducing agent as raw materials, then adding the mixing water to form slurry, performing compression molding on the slurry, and performing maintenance to obtain the baking-free brick. According to the method, the volume stability of the high-sulfur tailings is improved by utilizing the alkaline characteristic of the red mud, the adverse effect of the high-sulfur tailings on the mechanical property of the baking-free brick is relieved, and meanwhile resource utilization of bulk solid wastes such as the high-sulfur tailings and the red mud is achieved.
本发明公开一种赤泥基高硫尾砂固废免烧砖的制备方法，包括如下步骤：(1)将赤泥、高硫尾砂粉与水混合，然后加热保温并不断搅拌。完成后进行固液分离，并对得到的固体产物进行洗涤、干燥，研磨，得预处理混合料。(2)将上述固液分离所得碱性液体与所述洗涤得到的洗涤液混合，然后加入海藻酸粉末进行中和。然后进行固液分离，收集液相，即得拌和水。(3)以所述预处理混合料、粉煤灰、骨料、硅酸盐水泥、减水剂为原料，然后加入所述拌和水形成浆料，将其压制成型后养护，即得免烧砖。本发明的方法利用赤泥的碱性特性提高了高硫尾砂的体积安定性，缓解其对免烧砖的力学性能带来的不利影响，同时实现了高硫尾砂和赤泥这些大宗固废的资源化利用。
Preparation method of red-mud-based high-sulfur tailing solid waste baking-free brick
The invention discloses a preparation method of a red-mud-based high-sulfur tailing solid waste baking-free brick, which comprises the following steps: (1) mixing red mud, high-sulfur tailing powder and water, heating, preserving heat and continuously stirring; carrying out solid-liquid separation after the reaction is finished, and washing, drying and grinding an obtained solid product to obtain a pretreated mixture; and (2) mixing the alkaline liquid obtained by solid-liquid separation with the washing liquid obtained by washing, and then adding alginic acid powder for neutralization. And then carrying out solid-liquid separation, and collecting a liquid phase to obtain the mixing water. And (3) taking the pretreated mixture, fly ash, aggregate, Portland cement and a water reducing agent as raw materials, then adding the mixing water to form slurry, performing compression molding on the slurry, and performing maintenance to obtain the baking-free brick. According to the method, the volume stability of the high-sulfur tailings is improved by utilizing the alkaline characteristic of the red mud, the adverse effect of the high-sulfur tailings on the mechanical property of the baking-free brick is relieved, and meanwhile resource utilization of bulk solid wastes such as the high-sulfur tailings and the red mud is achieved.
本发明公开一种赤泥基高硫尾砂固废免烧砖的制备方法，包括如下步骤：(1)将赤泥、高硫尾砂粉与水混合，然后加热保温并不断搅拌。完成后进行固液分离，并对得到的固体产物进行洗涤、干燥，研磨，得预处理混合料。(2)将上述固液分离所得碱性液体与所述洗涤得到的洗涤液混合，然后加入海藻酸粉末进行中和。然后进行固液分离，收集液相，即得拌和水。(3)以所述预处理混合料、粉煤灰、骨料、硅酸盐水泥、减水剂为原料，然后加入所述拌和水形成浆料，将其压制成型后养护，即得免烧砖。本发明的方法利用赤泥的碱性特性提高了高硫尾砂的体积安定性，缓解其对免烧砖的力学性能带来的不利影响，同时实现了高硫尾砂和赤泥这些大宗固废的资源化利用。
Preparation method of red-mud-based high-sulfur tailing solid waste baking-free brick
一种赤泥基高硫尾砂固废免烧砖的制备方法
LIANG HAIBO (Autor:in) / JIANG YINGCHUN (Autor:in) / ZHANG XIAOLONG (Autor:in) / WANG TONGXUN (Autor:in)
07.06.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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