News

Quartz pickling is the core process of quartz sand purification. It dissolves metal oxides, silicates and other impurities with acid to significantly improve the purity of silicon dioxide (up to 99.7% or more), meeting the needs of high-end fields such as photovoltaic glass, semiconductors, and high-purity quartz.

Process selection suggestions
● Ordinary impurity removal (SiO₂＞94%): simple pickling with hydrochloric acid/sulfuric acid (24-hour immersion);
● High purity requirements (SiO₂＞99.7%): mixed acid (HF system) + adsorbent circulation technology + PPH equipment;
● Environmental protection priority: oxalic acid-ammonium bifluoride system + zero waste liquid discharge design.

Current technology has broken through the bottleneck of traditional pickling efficiency. The future direction focuses on low-temperature catalytic acidolysis (such as Fe²⁺-catalyzed oxalic acid) and fully enclosed automated production lines to further reduce energy consumption and risks.

Weifang Guote Mining Equipment Co., Ltd. is located in Weifang City, Shandong Province, China. The company strictly follows international industry standards in product quality control, and its products have passed ISO three major system certifications and EU CE certification. With its outstanding R&D strength, the company has more than 100 patented technologies, covering all aspects of product design, process, function, etc., which gives the company’s products a unique advantage in market competition.

The company’s products cover non-metallic mineral production lines such as quartz glass sand, quartz plate sand, petroleum fracturing sand, silicon micropowder, and metal mineral production lines such as hematite, manganese ore, ilmenite, and limonite. It also provides stand-alone products such as magnetic separation, screening, sand washing, grading, drying, and dehydration. All products are independently developed and produced by the company. Each product embodies the wisdom and hard work of Guote people, and performs well in stability and reliability.

The company currently has dozens of technical personnel with rich practical experience in design, R&D, etc., and can provide customers with the best technical support and services at any time. The company has always adhered to the business philosophy of “reliability, efficiency and simplicity”. According to the specific needs of customers, it can provide a service system that integrates mineral processing tests, engineering design, production installation and commissioning services, and provide customers with One-stop EPC solutions.

Weifang Guote Mining Equipment Co., Ltd.’s products are exported to Southeast Asian countries such as South Korea, India, Malaysia, Vietnam, Indonesia, as well as Africa, South America, Oceania, Russia and other regions. It has established a good image for the global mining equipment industry on the international stage and created a well-known brand at home and abroad.

Magnetic separator is a device that uses the magnetic difference of materials to separate them in an uneven magnetic field. It is widely used in many fields such as mineral processing (ore dressing), coal washing, non-metallic mineral purification, metallurgy, building materials, chemicals, food, medicine, garbage disposal and waste material recycling. It is mainly used to separate magnetic minerals (such as magnetite, titanomagnetite, pyrrhotite, etc.) from non-magnetic minerals, or to remove ferromagnetic impurities (iron removal) in raw materials.

Understanding the principles and functions of different types of magnetic separators is essential for the efficient and economical application of magnetic separation technology in fields such as mineral processing, material purification, environmental protection and resource recovery.

There are many types of magnetic separators, which can be classified mainly from the following aspects.