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A platform for research: civil engineering, architecture and urbanism
Method for preparing unfired high-strength brick and poly-aluminum flocculant from aluminum ash and ardealite and product of unfired high-strength brick and poly-aluminum flocculant
The invention discloses a method for preparing an unfired high-strength brick and a polyaluminum flocculant from aluminum ash and ardealite and a product thereof, and the method comprises the following steps: mixing aluminum ash, a silicon-based material and ardealite, grinding, calcining, and adding a sulfuric acid solution to obtain separation slag and an aluminum-rich solution; adding calcium aluminate into the aluminum-rich solution until the pH value of the mixed solution is acidic, aging, and carrying out solid-liquid separation to obtain calcium slag and a flocculant precursor solution; the flocculant precursor solution is dried and ground into powder, and the polyaluminum sulfate flocculant is obtained; and mixing the separated slag, calcium slag and light calcined magnesia, adding water, stirring, statically pressing and curing to obtain the unfired high-strength brick. The preparation process is simple, full utilization of aluminum ash components is achieved through the processes of reasonable burdening, calcination, acid leaching, polymerization and curing, the maximum strength of the prepared baking-free brick can reach 37.83 MPa, the maximum COD adsorption capacity of the prepared flocculant can reach 1274 mg/g, and the maximum ammonia nitrogen adsorption capacity can reach 112 mg/g.
本发明公开了一种利用铝灰和磷石膏制备免烧高强砖和聚铝絮凝剂的方法及其产品，所述方法包括以下步骤：混合铝灰、硅基材料和磷石膏，研磨，煅烧，加入硫酸溶液，得到分离渣和富铝溶液；在富铝溶液中加入铝酸钙直至混合液pH为酸性，陈化，固液分离，得到钙渣和为絮凝剂前驱液；将絮凝剂前驱液烘干，磨粉，得到聚合硫酸铝絮凝剂；混合分离渣、钙渣和轻烧氧化镁，加水，搅拌，静压，养护，得到免烧高强砖。本发明制备过程简单，通过合理配料、煅烧、酸浸、聚合、固化过程实现铝灰成分的充分利用，制备的免烧砖最高强度可达37.83MPa，制备的絮凝剂COD吸附容量最高可达1274mg/g，氨氮吸附容量最高可达112mg/g。
Method for preparing unfired high-strength brick and poly-aluminum flocculant from aluminum ash and ardealite and product of unfired high-strength brick and poly-aluminum flocculant
The invention discloses a method for preparing an unfired high-strength brick and a polyaluminum flocculant from aluminum ash and ardealite and a product thereof, and the method comprises the following steps: mixing aluminum ash, a silicon-based material and ardealite, grinding, calcining, and adding a sulfuric acid solution to obtain separation slag and an aluminum-rich solution; adding calcium aluminate into the aluminum-rich solution until the pH value of the mixed solution is acidic, aging, and carrying out solid-liquid separation to obtain calcium slag and a flocculant precursor solution; the flocculant precursor solution is dried and ground into powder, and the polyaluminum sulfate flocculant is obtained; and mixing the separated slag, calcium slag and light calcined magnesia, adding water, stirring, statically pressing and curing to obtain the unfired high-strength brick. The preparation process is simple, full utilization of aluminum ash components is achieved through the processes of reasonable burdening, calcination, acid leaching, polymerization and curing, the maximum strength of the prepared baking-free brick can reach 37.83 MPa, the maximum COD adsorption capacity of the prepared flocculant can reach 1274 mg/g, and the maximum ammonia nitrogen adsorption capacity can reach 112 mg/g.
本发明公开了一种利用铝灰和磷石膏制备免烧高强砖和聚铝絮凝剂的方法及其产品，所述方法包括以下步骤：混合铝灰、硅基材料和磷石膏，研磨，煅烧，加入硫酸溶液，得到分离渣和富铝溶液；在富铝溶液中加入铝酸钙直至混合液pH为酸性，陈化，固液分离，得到钙渣和为絮凝剂前驱液；将絮凝剂前驱液烘干，磨粉，得到聚合硫酸铝絮凝剂；混合分离渣、钙渣和轻烧氧化镁，加水，搅拌，静压，养护，得到免烧高强砖。本发明制备过程简单，通过合理配料、煅烧、酸浸、聚合、固化过程实现铝灰成分的充分利用，制备的免烧砖最高强度可达37.83MPa，制备的絮凝剂COD吸附容量最高可达1274mg/g，氨氮吸附容量最高可达112mg/g。
Method for preparing unfired high-strength brick and poly-aluminum flocculant from aluminum ash and ardealite and product of unfired high-strength brick and poly-aluminum flocculant
一种利用铝灰和磷石膏制备免烧高强砖和聚铝絮凝剂的方法及其产品
FENG YUXUAN (author) / HUANG TAO (author) / SONG DONGPING (author) / LI YUE (author) / JIANG YIRONG (author) / TANG CHAOJUN (author) / WANG BAIJUN (author) / ZHANG YANG (author) / CHEN QIANG (author) / ZHANG SHUWEN (author)
2024-05-03
Patent
Electronic Resource
Chinese
IPC:
C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
,
Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden
/
C02F
Behandlung von Wasser, Schmutzwasser, Abwasser oder von Abwasserschlamm
,
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
/
C04B
Kalk
,
LIME
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