Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method and system of drying-free machine-made fine sand and prepared machine-made fine sand
The invention relates to the field of building materials, and particularly discloses a preparation method and a system of drying-free machine-made fine sand and the prepared machine-made fine sand. The preparation method comprises the following steps that S1, ore raw materials are subjected to primary crushing and then screened, common sand with the particle size smaller than 25 mm is removed, and materials are obtained; S2, stone powder on the surfaces of the materials is blown away through high-pressure air, then secondary crushing and screening are conducted, the materials with the particle size larger than 30 mm are returned to be subjected to secondary crushing again, and the materials with the particle size smaller than 30 mm are subjected to tertiary crushing; S3, after third-stage crushing, screening is conducted, and materials with the particle size larger than 3 mm are returned to be subjected to third-stage crushing again; and finely screening of the material with the particle size of less than 3mm is carried out to obtain the machine-made fine sand with the particle size of 0.2-0.4 mm. By adopting the preparation method provided by the invention, the high-quality machine-made sand can be prepared without drying, so that the drying energy can be saved, and the preparation cost can be saved.
本申请涉及建筑材料领域，具体公开了一种免烘干机制精细砂的制备方法、系统和制得的机制精细砂。其制备方法包括如下步骤：S1、对矿石原料进行一级破碎，随后筛分，去除粒径小于25mm的普通砂，得到物料；S2、用高压空气吹去物料表面的石粉，随后进入二级破碎，筛分，粒径大于30mm的物料返回再次进行二级破碎，粒径小于30mm的物料进入三级破碎；S3、三级破碎后，筛分，粒径大于3mm的物料返回再次进行三级破碎；粒径小于3mm的物料进精细筛选，得到粒径为0.2‑0.4mm的机制精细砂。采用本申请的制备方法，可以在免烘干的情况下制得精品机制砂，从而可节约烘干的能源、节约制备成本。
Preparation method and system of drying-free machine-made fine sand and prepared machine-made fine sand
The invention relates to the field of building materials, and particularly discloses a preparation method and a system of drying-free machine-made fine sand and the prepared machine-made fine sand. The preparation method comprises the following steps that S1, ore raw materials are subjected to primary crushing and then screened, common sand with the particle size smaller than 25 mm is removed, and materials are obtained; S2, stone powder on the surfaces of the materials is blown away through high-pressure air, then secondary crushing and screening are conducted, the materials with the particle size larger than 30 mm are returned to be subjected to secondary crushing again, and the materials with the particle size smaller than 30 mm are subjected to tertiary crushing; S3, after third-stage crushing, screening is conducted, and materials with the particle size larger than 3 mm are returned to be subjected to third-stage crushing again; and finely screening of the material with the particle size of less than 3mm is carried out to obtain the machine-made fine sand with the particle size of 0.2-0.4 mm. By adopting the preparation method provided by the invention, the high-quality machine-made sand can be prepared without drying, so that the drying energy can be saved, and the preparation cost can be saved.
本申请涉及建筑材料领域，具体公开了一种免烘干机制精细砂的制备方法、系统和制得的机制精细砂。其制备方法包括如下步骤：S1、对矿石原料进行一级破碎，随后筛分，去除粒径小于25mm的普通砂，得到物料；S2、用高压空气吹去物料表面的石粉，随后进入二级破碎，筛分，粒径大于30mm的物料返回再次进行二级破碎，粒径小于30mm的物料进入三级破碎；S3、三级破碎后，筛分，粒径大于3mm的物料返回再次进行三级破碎；粒径小于3mm的物料进精细筛选，得到粒径为0.2‑0.4mm的机制精细砂。采用本申请的制备方法，可以在免烘干的情况下制得精品机制砂，从而可节约烘干的能源、节约制备成本。
Preparation method and system of drying-free machine-made fine sand and prepared machine-made fine sand
一种免烘干机制精细砂的制备方法、系统和制得的机制精细砂
FENG HUIJI (Autor:in)
28.01.2022
Patent
Elektronische Ressource
Chinesisch
Machine-made sand, preparation method and concrete prepared from machine-made sand
| Europäisches Patentamt | 2022
| Europäisches Patentamt | 2022
Machine-made sand concrete using synergist and preparation method of machine-made sand concrete
| Europäisches Patentamt | 2020
Machine-made sand tailing ground fine powder concrete mix proportion design method
| Europäisches Patentamt | 2024