Core Viewpoint - The article highlights the transformation of CITIC Heavy Industries from a traditional mining machinery factory to a leading advanced equipment manufacturing enterprise with extreme manufacturing capabilities, driven by capital market empowerment and innovation. Group 1: Capital Empowerment and Technological Breakthroughs - Since its listing on the Shanghai Stock Exchange in 2012, CITIC Heavy Industries has utilized the capital market as a strategic platform for high-quality development, focusing on core technology breakthroughs and industrial upgrades [2] - The 2015 targeted issuance was a key move, allowing the company to acquire 80% of Tangshan Kaicheng, entering the special robotics field and establishing a core platform for high-end intelligent equipment [2] - The company's robotics industry is now among the top tier in the industry, with a "4+6+N" layout that includes four core bases and six robot platforms, achieving large-scale applications in mining and emergency rescue [2] Group 2: Participation in National Major Projects - CITIC Heavy Industries has participated in several national major projects, providing key forgings for the Shenzhou spacecraft and core components for domestic aircraft carriers and large aircraft [3] - The company has developed oversized mining equipment that has set world records, showcasing China's strength in high-end equipment manufacturing [3] Group 3: Industry Chain Collaboration and Upgrading - As a core enterprise in the advanced manufacturing cluster in Luoyang, CITIC Heavy Industries drives the collaborative upgrade of the industrial chain, integrating resources from local enterprises and research institutions [4] - The company has successfully developed high-end materials and technologies in collaboration with local research institutes, breaking import monopolies and enhancing the regional industrial ecosystem [4][5] Group 4: Future Development and Strategic Goals - Looking ahead, CITIC Heavy Industries aims to align its capital layout with the high-quality development goals of Henan Province, transitioning from an equipment manufacturer to a system service provider [7] - The company plans to enhance its technological capabilities in hydraulic systems, intelligent control units, and new materials, while expanding its robot solutions into various sectors [7] - CITIC Heavy Industries is committed to green and low-carbon transformation, developing energy-saving products and upgrading traditional production processes to support sustainable development [8]

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]