钛石膏的开发利用研究进展

The Development and Research Progress of Titanium Gypsum Exploitation and Utilization

钛石膏是硫酸法生产钛白粉过程中产生的固体废石膏。目前尚未得到有效利用,不仅造成环境污染和土地资源浪费,还使得钛石膏中的钙源和硫源大量流失,钛石膏中的杂质铁、钒、钛、铬等元素限制了它的开发利用。近年来,钛石膏除应用在水泥、混凝土、烧结砖等传统建材方面,还用于土壤调理剂、壁纸阻燃剂、硫酸钙晶须等新材料方面。本文从钛石膏的组成、纯化方法及开发利用现状等方面进行了综合评述,并对钛石膏今后的开发利用途径进行了展望。

Titanium gypsum is a solid waste gypsum,which is the by-products in the production of titanium dioxide by sulphuric acid method.Because the titanium gypsum has not been used effectively,it not only causes environmental pollution and waste of land resources,but also makes the calcium source and sulfur source in titanium gypsum lose greatly.The iron,vanadium,titanium and chromium elements containing in the titanium gypsum limit its development and utilization.in recent years,titanium gypsum has been applied to the traditional building materials such as cement,concrete,sintering brick,etc.,as well as the new materials such as soil conditioner,wall paper fire-retardant and calcium sulfate whisker.In this paper,the composition,purification methods,development and utilization of titanium gypsum are reviewed,it also prospect that future utilization of the titanium gypsum according to relevant research.