2015年的定向增发堪称关键布局。公司通过发行股份收购唐山开诚80%股权，快速切入特种机器人领 域，搭建起高端智能装备的核心平台。这一举措不仅拓展了业务边界，更成为公司向智能化、数字化转 型的关键一步。 清晨的洛阳，中信重工（601608）新能源装备智能车间内，机械臂精准完成超大型锻件加工，AGV小 车有序转运零部件——这幅智能化生产图景的背后，是这家诞生于"一五"时期156项重点工程的重型装 备龙头，借助资本市场赋能，从"矿山机器厂"蜕变为全球稀缺的具备极限制造能力的先进装备制造企业 的生动实践。 作为河南装备制造的标杆，中信重工以资本为桥、创新为核，在技术突破、产业协同、全球布局的征程 上稳步前行，书写着资本市场赋能实体企业、助力河南高质量发展的精彩答卷。 资本赋能 破局技术攻坚 自2012年在上海证券交易所A股主板上市以来，中信重工坚持将资本市场作为推动高质量发展的战略平 台，持续聚焦主业、深耕实业，围绕国家重大需求开展核心技术攻关和产业升级。 如今，中信重工机器人产业已跻身行业第一梯队，形成"4+6+N"布局——攻克"中信微"操作系统、"中 信智"智能控制器等四大核心底座，打造人形、四足、轮式等六大机 ...

Crushing and Screening Stage - The initial step involves selecting high-purity, low-gray particles from larger ore types like quartzite, followed by crushing using jaw or cone crushers, ensuring the desired particle size through a closed-loop system with vibrating screens [2] - The crushed product is then processed in a sand-making machine to obtain quartz sand of specific granularity [2] Grinding Stage - Quartz sand grinding typically employs a single-stage or two-stage overflow ball mill, with the second stage forming a closed-loop cycle with a spiral classifier or hydrocyclone to ensure the required fineness [3] Beneficiation Stage - To achieve high-purity industrial quartz sand, further purification processes are necessary after obtaining quartz sand of a certain granularity, including washing, classification, scrubbing, magnetic separation, flotation, and acid leaching [4] - Washing and classification are essential to remove clay and impurities, as the quality of quartz sand decreases with smaller particle sizes [4] - Scrubbing utilizes mechanical force to remove iron films or adhering impurities from quartz particles, followed by separation of finer particles using a hydrocyclone [4] - Magnetic separation effectively removes weakly magnetic impurities like hematite and biotite, using wet permanent magnetic drum separators for weak magnetic and high-gradient magnetic separators for strong magnetic separation [4] - Flotation aims to remove non-magnetic impurities such as feldspar and mica, with HF commonly used as an activator in the process [5] - Acid leaching exploits the solubility properties of quartz to separate and purify it, as quartz is nearly insoluble in common acids except for HF [5] - Microbial leaching is an emerging technique that uses specific microorganisms to remove iron films from quartz sand, showing promising results in laboratory settings but requiring further industrial research [5]