硅粉是从制造炼钢用脱氧脱硫剂的硅铁合金或者用电炉制造硅金属时所产生的废气(粉尘)中,用收尘装置所收集到的超细粉末。早在六十年代,加拿大、美国及北欧的一些国家就对用硅粉作为掺合料来改善混凝土性质作了大量的研究,并已将硅粉用于配制特种水泥、高强混凝土、高强轻质混凝土等方面。 Silica fume is an ultra-fine powder collected by a dust collecting device from a ferro-silicon alloy for producing a deoxidation desulfurization agent for steelmaking or an exhaust gas (dust) generated when silicon metal is produced in an electric furnace. As far back as the 1960s, Canada, the U.S., and some countries in the Nordic countries did a lot of research on the use of silica fume as admixture to improve the properties of concrete. The silica fume has been used to formulate special cements, high-strength concrete, and high-strength, lightweight materials. Concrete and so on.