Core Viewpoint - The article discusses the differences between quartz powder and silica micro powder, including their production methods, physical and chemical properties, and application fields. Group 1: Definitions and Production - Quartz powder is a coarser form of SiO2 obtained by crushing quartz ore, while silica micro powder is a finer form produced through grinding or chemical methods to achieve high purity [1] - Micro silica, also known as silica fume, is a byproduct of industrial processes, specifically from the collection of smoke dust in smelting plants, containing about 90% SiO2 [3] - White carbon black is produced through chemical methods and can achieve a purity of up to 99% with particle sizes ranging from 10 to 20 nm [3] Group 2: Historical Context - The earliest silica micro powder originated from dust collected from steel plant chimneys, primarily used in the refractory materials industry in the early 1990s [4] - In the late 1990s, the rapid development of the electronic circuit board industry in China led to the ultra-fine purification of quartz powder, which became known as silica micro powder [5] Group 3: Physical and Chemical Properties - Both silica micro powder and quartz powder are fine materials with particle sizes typically below 1 micron, but they differ in physical properties; silica micro powder is lighter and less dense, while quartz powder is denser [7] - Chemically, silica micro powder is a form of SiO2 with a non-crystalline structure and many active surface groups, whereas quartz powder is made from crushed crystalline quartz [7] Group 4: Application Fields - Silica micro powder is widely used in electronics, optics, ceramics, cosmetics, coatings, and plastics to enhance material stability, reduce costs, and improve processing performance [7] - Quartz powder is primarily used in glass, ceramics, cement, building materials, and metal surface coatings due to its high hardness and chemical stability [7]

Core Points - The company has completed the registration change and received a new business license, reflecting a reduction in registered capital from 423,462,140 RMB to 423,299,750 RMB [1] - The total number of shares has decreased from 423,462,140 to 423,299,750 [1] - The company operates in the production and R&D of zirconium series products, advanced grinding materials, and other related industrial materials [1] Company Information - The company is named "三祥新材股份有限公司" (Sanxiang New Materials Co., Ltd.) and is a joint-stock company [1] - The registered capital is now 42329.9750 million RMB [1] - The company was established on August 24, 1991, and is located in Fujian Province, China [1] Business Scope - The company’s business includes the production and R&D of zirconium series products, single crystal alumina advanced grinding materials, and casting core wires [1] - It also engages in the production of micro-silica powder and various chemical products used in construction ceramics, functional ceramics, and refractory materials [1] - The company is involved in industrial material technology testing and services, subject to relevant approvals [1]

1. 硅业新材料生产流程简介 1.1 目标产品： 硅业新材料主要目标产品为工业硅，副产品为微硅粉； 其中工业硅执行《工业硅》 (GB/T2881-2014）标准； 微硅粉执行《电炉回收二氧化硅微粉》GB/T21236-2007标准； 1 .3 烟气特性： 矿热炉烟气，一般温度在450-650度，经过余热锅炉回收热量后，经过脱硫除尘脱硝处理，排入大气； 1.2 设备设施及工艺流程： 工艺流程可分为配料、冶炼、精炼、成品加工、尾气处理等阶段；主要原料包括硅石、洗精煤、木块 等； 设备设施主要包括矿热电炉生产线、配套余热利用发电、余热回收系统、氧气精炼系统、配套烟气除尘 及微硅粉加密系统等； 工艺流程图如图所示（图1）： 根据物料特性和燃烧情况，烟气中污染物含量基本情况如下： 颗粒物浓度为3000mg/m 3 左右，通常在1000mg/m 3 -3000mg/m 3 之间； 硫化物浓度在100mg/m 3 -150mg/m 3 左右； 氮氧化物浓度在200mg/m 3 左右； 2. 脱硫脱硝方案选择 根据图1所示的流程图可以看出：以往普遍采用的脱硫脱硝方式为SDS（小苏打直喷）+布袋除尘器收尘 +SCR脱硝； 然而 ...