Corrosion Protection, Explosion-Resistant Design and Material Selection for Chemical and Mining Facilities

Mining and chemical industry factories belong to high-risk special industrial buildings, and the production environment is accompanied by corrosive gases, dust, acidic and alkaline media, high temperature and humidity. Some areas have flammable and explosive risks, and the requirements for corrosion resistance, explosion protection, fire resistance and fatigue resistance are much stricter than those of ordinary industrial factories. The design and material selection system of ordinary civil steel structures is completely unsuitable for chemical and mining conditions, and is prone to safety hazards such as steel corrosion, component aging, and structural failure. Hongsheng Steel Structure Group has been deeply involved in the field of special industrial steel structures for many years. It has established exclusive design logic and material selection standards for different working conditions such as mining crushing, chemical production, raw material storage, and exhaust gas treatment, fully adapting to the safety needs of high-risk industrial scenarios.

At the design level, the core of the group follows the principles of "maximizing safety redundancy, prioritizing corrosion and explosion prevention, structural fatigue resistance, and adaptability to working conditions". The mining chemical plant is subjected to long-term equipment vibration, dust impact, and medium corrosion. The structural design does not pursue lightweight, but focuses on strengthening the structural stiffness and node stability. The beam column system adopts a ribbed reinforcement layout, with support structures and reinforcement nodes added in key equipment areas to resist structural fatigue damage caused by continuous vibration of heavy equipment. In response to the flammable and explosive characteristics of the chemical workshop, strict implementation of explosion-proof design, control of component splicing gaps, and prevention of static electricity accumulation. The roof and walls are designed with pressure relief structures to quickly release pressure in emergency situations and reduce the damage of explosion impact to the main structure. At the same time, optimize the ventilation and drainage structure of the workshop to avoid the long-term accumulation of corrosive media adhering to the steel surface, and reduce the risk of corrosion from the design source.

The material selection process adopts strict standards of graded adaptation and high-risk upgrading, which is completely different from ordinary factory materials. Ordinary carbon steel is replaced with higher-strength steel for the main load-bearing components, and Q355B high-strength steel is selected for conventional chemical corrosion conditions. It has high strength, excellent deformation resistance, and fatigue resistance, and is suitable for long-term vibration and load alternating conditions; High corrosion acid alkali workshops and mine tailings supporting plants directly use Q355NH weathering steel or specialized low-alloy corrosion-resistant steel to enhance corrosion resistance at the substrate level. All high-strength bolts, connectors, and welding auxiliary materials are made of stainless steel to prevent the problem of common connectors being corroded first and causing node failure.

The selection of materials for protection and enclosure is the core focus of mining chemical plants. The anti-corrosion system adopts C5 level heavy anti-corrosion technology, and the components undergo high standard sandblasting and rust removal before leaving the factory. Multiple layers of heavy anti-corrosion coatings are thickened and coated, suitable for strong corrosive environments such as acid, alkali, salt spray, and chemical gases, to prevent rapid coating peeling and steel corrosion. The enclosure board does not use ordinary color steel plates, but uses aluminum magnesium zinc high corrosion resistant board, combined with special anti-corrosion sealant. All cutting and splicing joints of the board are treated with anti-corrosion reinforcement to prevent joint corrosion. The fire-resistant material selection is suitable for the high-risk fire-resistant level of the chemical industry, using thick fire-resistant coatings and fire-resistant sealing systems. Key areas are covered with fire-resistant boards to meet the long-term fire-resistant needs of high-risk factories. In response to high dust and high wear conditions in mines, the floor and platform components are thickened to enhance their impact resistance and wear resistance.

Special industrial plants have extremely high requirements for production processes, construction qualifications, and specialized technologies of enterprises, which ordinary steel structure enterprises cannot meet. Hongsheng Steel Structure Group is a large-scale enterprise engaged in the production of steel structural materials and construction of steel structures, with subsidiaries both domestically and internationally. The group has the qualification for specialized production and construction of special industrial steel structures, and its own production base can complete customized processing, heavy anti-corrosion pretreatment, and explosion-proof process treatment of specialized steel components for high-risk working conditions. It strictly controls the quality of the entire process of substrate, coating, nodes, and enclosure. We undertake various types of mining, chemical production, fine chemical, and new energy chemical plant projects domestically. Our overseas subsidiaries adapt to different national high-risk industrial building standards and implement overseas chemical and mining steel structure projects, providing high safety and high durability steel structure overall solutions for special industrial projects at home and abroad.

The core of the steel structure in mining and chemical plants is safety and durability. Precise design for adapting to working conditions, strict grading material selection, and standardized special processes are key to eliminating industrial safety hazards and extending the service life of the plant. The group relies on a specialized technical system to ensure the stable, safe, and long-term operation of high-risk industrial plants in all aspects.

Related Questions and Answers

Q: Can the steel structure of the chemical plant be retrofitted with anti-corrosion instead of the original factory's heavy anti-corrosion process in the later stage?

Answer: Not recommended. In the later stage, the on-site anti-corrosion and rust removal environment is poor, the coating adhesion is weak, and the thickness is uneven, which cannot meet the factory's standardized heavy anti-corrosion process standards, and it is easy to peel off in the short term. High risk chemical working conditions must undergo standardized heavy anti-corrosion treatment during the component production stage to meet long-term corrosion resistance requirements.