A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Baking-free brick and preparation method and application thereof
The invention relates to the technical field of comprehensive utilization of resources and environmental protection and treatment, and particularly provides a baking-free brick and a preparation method and application thereof. The baking-free brick takes a red mud-based sulphoaluminate cementing material as a matrix, and biomass ash is wrapped in the matrix and has an adsorption effect. The preparation method comprises the following steps of crushing, stirring and homogenizing the red mud, the dolomite, the desulfurized gypsum and the aluminum slag to prepare a red mud-based sulphoaluminate cementing material raw material, and performing high-temperature calcination to form the red mud-based sulphoaluminate cementing material, sieving biomass ash, mixing the sieved biomass ash with the prepared red mud-based cementing material according to a specific ratio, adding tap water or industrial wastewater, fully stirring, pouring into a baking-free brick mold, fully compacting by a vibrating table, pressing, demolding and curing to obtain the baking-free brick. The problems that in the prior art, due to the fact that biomass ash is doped in building materials, the building materials are white and saltpetering, the utilization rate of the biomass ash is low, and due to the fact that building waste such as red mud is adopted for preparing baking-free bricks, pollutants exceed the standard are solved.
本公开涉及资源综合利用和环境保护治理技术领域，具体提供一种免烧砖及其制备方法与应用。所述免烧砖以赤泥基硫铝酸盐胶凝材料为基体，其中包裹生物质灰渣，生物质灰渣具有吸附作用。其制备方法包括如下步骤，将赤泥，白云石，脱硫石膏，铝渣经破碎、搅拌、均化先制备成赤泥基硫铝酸盐胶凝材料生料，在经过高温煅烧，形成赤泥基硫铝酸盐胶凝材料；将生物质灰渣经筛分后，在与制备的赤泥基胶凝材料按特定比例混合，加入自来水或工业废水，经充分搅拌后倒入免烧砖模具内，经振动台充分振实，压制后，脱模养护，既得。解决现有技术中在建材中掺杂生物质灰渣导致建材白华和泛碱现象，生物质灰渣利用率低，以及采用赤泥等建筑废料制备免烧砖导致污染物超标的问题。
Baking-free brick and preparation method and application thereof
The invention relates to the technical field of comprehensive utilization of resources and environmental protection and treatment, and particularly provides a baking-free brick and a preparation method and application thereof. The baking-free brick takes a red mud-based sulphoaluminate cementing material as a matrix, and biomass ash is wrapped in the matrix and has an adsorption effect. The preparation method comprises the following steps of crushing, stirring and homogenizing the red mud, the dolomite, the desulfurized gypsum and the aluminum slag to prepare a red mud-based sulphoaluminate cementing material raw material, and performing high-temperature calcination to form the red mud-based sulphoaluminate cementing material, sieving biomass ash, mixing the sieved biomass ash with the prepared red mud-based cementing material according to a specific ratio, adding tap water or industrial wastewater, fully stirring, pouring into a baking-free brick mold, fully compacting by a vibrating table, pressing, demolding and curing to obtain the baking-free brick. The problems that in the prior art, due to the fact that biomass ash is doped in building materials, the building materials are white and saltpetering, the utilization rate of the biomass ash is low, and due to the fact that building waste such as red mud is adopted for preparing baking-free bricks, pollutants exceed the standard are solved.
本公开涉及资源综合利用和环境保护治理技术领域，具体提供一种免烧砖及其制备方法与应用。所述免烧砖以赤泥基硫铝酸盐胶凝材料为基体，其中包裹生物质灰渣，生物质灰渣具有吸附作用。其制备方法包括如下步骤，将赤泥，白云石，脱硫石膏，铝渣经破碎、搅拌、均化先制备成赤泥基硫铝酸盐胶凝材料生料，在经过高温煅烧，形成赤泥基硫铝酸盐胶凝材料；将生物质灰渣经筛分后，在与制备的赤泥基胶凝材料按特定比例混合，加入自来水或工业废水，经充分搅拌后倒入免烧砖模具内，经振动台充分振实，压制后，脱模养护，既得。解决现有技术中在建材中掺杂生物质灰渣导致建材白华和泛碱现象，生物质灰渣利用率低，以及采用赤泥等建筑废料制备免烧砖导致污染物超标的问题。
Baking-free brick and preparation method and application thereof
一种免烧砖及其制备方法与应用
REN CHANGZAI (author) / XIE HONGZHANG (author) / ZHAO BAOFENG (author) / WANG WENLONG (author) / HOU SIYU (author) / QIN KEXUAN (author)
2021-07-09
Patent
Electronic Resource
Chinese
| European Patent Office | 2023