石英的矿床工业类型与应用特点

石英的工业应用十分广泛，使用量和工业产值巨大，尤其是在电子信息、新材料和新能源等战略性新兴产业中得到广泛应用，并由于石英是硅产业的物质基础和芯片生产所需关键材料的原料，因此石英是一种战略性非金属矿产。本工作根据石英SiO₂纯度及其工业应用特点，将石英及相关产品划分为w（SiO₂）99%±、w（SiO₂）99%~99.9%、w（SiO₂）>99.9%等三大类。其中，SiO₂纯度≥99.998%（4N8）的高纯石英高端产品是一种矿物功能材料和关键基础材料，目前还需要从国外高价进口；石英在自然界中的分布广泛，成因多种多样，但目前能够作为工业应用的石英矿物资源主要有天然水晶、石英砂岩、石英岩、脉石英、粉石英、天然石英砂和花岗岩石英等7种矿床工业类型；我国石英矿物资源丰富，矿产地遍布全国，但迄今为止尚未发现能够稳定满足工业生产需要的高纯石英优质原料矿产资源；石英的矿床工业类型与工业应用存在密切的关系，如何根据不同矿床工业类型石英的特点有针对性地开发利用，已成为石英原料加工技术及其项目成败的关键点。 

Industrial Types and Application Characteristics of Quartz Ore Deposits

The industrial application of quartz is very extensive with huge usage and industrial output value, especially in the strategic emerging industries such as electronic information, new materials and new energy. Because the quartz is the material basis of the silicon industry and the raw material of key materials for chip production, it is a strategic non-metallic mineral. According to the purity of silica and its industrial application characteristics, quartz and related products are divided into three categories:w (SiO₂) 99%±, w (SiO₂) 99%~99.9%, w (SiO₂) > 99.9%. Among them, the high grade product of high purity quartz with SiO₂ purity ≥ 99.998% (4N8) is a kind of mineral functional material and key basic material, which still needs to be imported from abroad at a high price at present. Quartz is widely distributed in nature with various causes. However, the quartz mineral resources that can be used for industrial applications mainly include 7 industrial types of ore deposits, including natural crystal, quartz sandstone, quartzite, vein quartz, powder quartz, natural quartz sand, and granite quartz. In China, the quartz mineral resources are abundant and spread all over the country. But so far, no high-quality raw material mineral resources of high purity quartz that can meet the needs of industrial production have been found. There is a close relationship between the industrial types of quartz deposits and their industrial applications. And how to develop and utilize quartz in accordance with the characteristics of different industrial mineral types has become the key point for the success of quartz raw material processing technology and its projects.