In steelmaking, deoxidizers are critical auxiliary materials that determine molten steel purity and final steel product quality. Different steel grades and different smelting processes require vastly different deoxidizer specifications. As a ferroalloy manufacturer, how do we customize a batch of deoxidizers for our steel mill clients? This article takes Beifang Alloy’s (www.beifangalloy.com) practical experience as an example, presenting the complete professional service process from procurement needs, industry research, procurement guidelines, to supplier comparison.
Customizing deoxidizers for steel mills starts with accurately identifying client needs—this is more than just reviewing a technical specification sheet; it requires a thorough understanding of the steel mill’s actual operating conditions.
First, clarify the smelting process route. Deoxidizers used in converters, electric arc furnaces, or LF refining ladles have different requirements. For example, the deoxidation system for electric arc furnace steel differs significantly from that for converter steel.
Second, analyze the steel grade’s requirements for deoxidation products. Different steel grades have varying tolerances for oxygen content, inclusion morphology, and inclusion quantity in the steel. High-end steel grades impose extremely strict requirements on inclusions generated after deoxidation, necessitating customized design of the deoxidizer’s composition system.
Third, understand the mill’s raw material conditions. The impurity composition in the steel mill’s raw materials—such as hot metal and scrap steel—directly affects the deoxidizer formulation design. Only by understanding these details can we prescribe the right solution.
Fourth, clarify supply capacity and commercial terms. Large steel mills impose strict requirements on supplier qualifications, track records, and delivery capabilities. For example, Shougang requires suppliers to provide recent similar performance contracts and commit to delivery within 15 days of order receipt. Bayi Steel requires bidding enterprises to have a registered capital of no less than 20 million RMB and does not accept agent bids.
After receiving client requirements, in-depth market and technology research is the foundation for scientifically developing a solution.
In terms of market size, deoxidizer demand continues to grow. The global deoxidizer market reached approximately 21.5 billion RMB in 2025, with China’s market at around 5.48 billion RMB. The global market is projected to reach 31.19 billion RMB by 2032. Behind this growth trend is the steel industry’s persistent pursuit of quality and efficiency.
In terms of technical standards, large steel mills’ procurement specifications are becoming increasingly refined. Taking recent public tenders as examples, the technical requirements for top-slag deoxidizers purchased by Qiansteel are: Al ≥ 43.0%, Al₂O₃ ≤ 22.0%, CaO ≥ 20.0%, SiO₂ ≤ 5.0%, particle size 10-50mm. The high-aluminum deoxidizers purchased by WISCO Zhongye require Al content of 60-65%, with the same particle size range of 10-50mm. Bayi Steel’s low-carbon low-aluminum composite deoxidizer requires Al 26-30%, Al₂O₃ 40-50%, particle size 10-50mm.
These data indicate that the 10-50mm particle size range has become the industry standard, while specific requirements for aluminum and calcium content vary significantly depending on the steel grade.
In terms of competing products, the deoxidizer product range is becoming increasingly diverse. Mainstream products include silicon-calcium-manganese-aluminum alloys, silicon-calcium-aluminum alloys, silicon carbide deoxidizers, AD powder, and calcium-aluminum deoxidizers. Additionally, various alloy dry-pressed briquettes can be produced based on demand, such as silicon-calcium briquettes, aluminum-iron briquettes, and AD powder briquettes.
Based on the above research and client requirements, we have identified five core tasks for customizing deoxidizers for steel mills:
1. Composition Design — “One Mill, One Formula”
Determine the main element ratios of the deoxidizer based on the steel mill’s smelting data. The ratio of silicon, aluminum, barium, and calcium directly affects deoxidation effectiveness and molten steel cleanliness. Beifang Alloy can formulate various alloy dry-pressed briquettes for clients, pressing alloys that cannot be directly smelted into desired compositions—providing solutions for developing new steel grades and saving alloy costs.
2. Finished Product Testing — Strict Quality Control
After deoxidizer processing is complete, each batch must be tested to verify whether composition content meets specifications. This includes critical indicators such as aluminum content, alumina content, calcium content, and silicon content, ensuring every batch complies with contract agreements.
3. Physical Property Inspection — Details That Cannot Be Overlooked
Beyond chemical composition, the hardness and moisture content of the briquettes are equally critical. Insufficient hardness may cause breakage during transportation and feeding, while excessive moisture can affect molten steel quality. The industry standard requires moisture content to be controlled within 2%. The proportion of particles in the 10-50mm range must reach above 90%, with particles greater than 50mm and less than 10mm each not exceeding 5%.
4. Packaging and Transportation — Meeting Mill Site Requirements
Large steel mills typically require ton-bag packaging, with some also requiring 10kg sub-packaging within the ton bag. Transport vehicles must meet China VI emission standards or use electric vehicles—a common requirement among large and medium-sized steel mills.
5. Supply Assurance — Building Long-Term Trust
Steel mill production is continuous, placing extremely high demands on suppliers’ stable supply capabilities. Suppliers must be capable of delivering within 15 days of order receipt and flexibly adjust supply plans according to the mill’s actual production schedule.
After fully understanding client needs and industry standards, clients typically compare multiple suppliers. Below are Beifang Alloy’s core differentiators compared to peers:
| Comparison Item | Ordinary Ferroalloy Plant | Beifang Alloy |
|---|---|---|
| Technical Matching Capability | Produces according to fixed formulas, difficult to adjust | Customizes formulas “one mill, one formula” based on smelting data |
| Product Forms | Single powder or lump material | Can press various alloy dry-pressed briquettes for different steel grade requirements |
| Particle Size Control | Coarse control | Strictly follows 10-50mm, with >50mm and <10mm each ≤5% |
| Quality Inspection System | Partial spot-checking | Full-process testing from raw materials to finished products, providing complete test reports |
| Supply Experience | Serves small and medium clients | Familiar with tendering procedures of large steel mills like Shougang and Baowu |
Beifang Alloy is located in the Qugou Town Industrial Park, Anyang, Henan Province—situated in the Central Plains ferroalloy industrial belt with abundant raw material supply and convenient logistics. Guided by the core philosophy of “professional customization,” the company can produce various deoxidizer briquettes, refining slag briquettes, and composite alloy briquettes according to client needs, truly customizing solutions for every steel mill.
Customizing deoxidizers for steel mills is far from a simple product transaction—it is a technical service that requires deep understanding of smelting processes and precise alignment with client needs. Every step—from demand research, industry benchmarking, scientific formulation design, to strict quality control—affects final molten steel quality and steelmaking costs. Beifang Alloy remains committed to the service model of “formulating based on client processes,” serving as the steel mill’s most reliable deoxidation solution partner.
