Production of low-carbon amorphous precipitated silica and hydrated magnesium carbonate from olivine

A novel process is reported that produces amorphous silica and nesquehonite (MgCO3.3H2O) from the magnesium silicate mineral olivine ((Mg,Fe)2.SiO4). The amorphous silica formed is a supplementary cementitious material (SCM) for use in concrete. The formation of nesquehonite sequesters carbon and means that the overall process is carbon negative. Nesquehonite can also be used to form low-carbon construction products such as bricks, blocks, and boards. This paper reports on key process optimisation studies. The potential for amorphous precipitated silica derived from olivine to produce carbon-negative concrete is discussed., , , # Production of low-carbon amorphous precipitated silica and hydrated magnesium carbonate from olivine 1\. Title of dataset: Production of low-carbon amorphous precipitated silica and hydrated magnesium carbonate from olivine 2\. Authors: Barney Shanks - Caitlin Howe - Sam Draper - Mike Cook - Hong Wong* - Christopher Cheeseman* - \* Corresponding authors  3. Affiliation: Centre for Infrastructure Materials, Department of Civil and Environmental Engineering, Imperial College London, London SW7 2AZ, United Kingdom 4\. Date of data collection: 2022-2023 5\. Geographic location of data collection: London, United Kingdom 6\. Description of the data and file structure Filename: ProcessPaperData.xlsx Description: Excel file containing experimental data organised into eight individual worksheets. Each sheet contains the raw and processed data (where applicable) that are presented in the corresponding figures in the full paper.    Sheet #1: Figure 3 Description: X-ray...本研究报道了一种新型工艺，可从镁硅酸盐矿物橄榄石（olivine，(Mg,Fe)₂SiO₄）中制备无定形二氧化硅与三水碳酸镁（nesquehonite，MgCO₃·3H₂O）。所制得的无定形二氧化硅可用作混凝土辅助胶凝材料（supplementary cementitious material, SCM）。三水碳酸镁的生成过程可实现碳固存，令整体工艺达到碳负排放效果。此外，三水碳酸镁还可用于制备砖、砌块、板材等低碳建筑制品。本文阐述了该工艺的关键优化研究，并探讨了由橄榄石衍生的沉淀型无定形二氧化硅用于制备碳负混凝土的潜力。 # 橄榄石基低碳沉淀型无定形二氧化硅与水合碳酸镁的制备 1. 数据集标题：橄榄石基低碳沉淀型无定形二氧化硅与水合碳酸镁的制备 2. 作者： Barney Shanks - Caitlin Howe - Sam Draper - Mike Cook - Hong Wong* - Christopher Cheeseman* - * 通讯作者 3. 所属机构： 英国伦敦帝国理工学院土木与环境工程学院基础设施材料研究中心，伦敦SW7 2AZ，英国 4. 数据采集时间：2022年—2023年 5. 数据采集地理区域：英国伦敦 6. 数据与文件结构说明 文件名：ProcessPaperData.xlsx 文件说明：该Excel文件包含实验数据，分为8个独立工作表。每个工作表存储对应正文中图表所用的原始数据与处理后数据（如适用）。 工作表#1：图3 说明：X射线...