Porous fly ash unfired ceramsite and preparation method thereof

• Main Authors: SONG HUIPING, CHENG FANGQIN, JIA YANGJIE, CHAI CHUNJING, FENG ZHENGJUN
• Format: Patent
• Language: Chinese; English
• Published: 04.09.2020
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

The invention relates to the technical field of preparation of unfired ceramsite, in particular to porous fly ash unfired ceramsite and a preparation method. The porous fly ash unfired ceramsite is prepared by adding water into raw materials including fly ash, calcium oxide, desulfurized gypsum and agricultural polymer water-absorbent resin and conducting granulation. According to the invention, process is simple, high-temperature calcination is not needed in the preparation process, energy is saved, and the environment is protected; pores can be formed in the ceramsite and on the surface of the ceramsite in a solid phase state in a unique efficient pore-forming process, so the obtained ceramsite product has high porosity, and the stacking density of the ceramsite is also reduced; and theresidual agricultural high-molecular water-absorbent resin can improve the water and fertilizer retention performance of the ceramsite. 本发明涉及免烧陶粒制备技术领域，更具体而言，涉及一种多孔粉煤灰免烧陶粒及制备方法，通过原料粉煤灰、氧化钙、脱硫石膏、农用高分子吸水树脂加水造粒制得，工艺简单，制备过程不需要进行高