Slag—including blast furnace slag, steel slag, and granulated slag—is a byproduct of metallurgical processes, typically with an initial moisture content of 20%-35% and containing a significant amount of hard particles. If simply stockpiled, it not only occupies land and pollutes the environment but also wastes valuable latent activity and metal resources.
Our slag dryer is specifically designed for high-hardness, highly abrasive materials. Utilizing a unique wear-resistant process and efficient heat exchange technology, it rapidly reduces slag moisture to below 2%-5%, providing an ideal raw material for subsequent grinding into slag powder, cement additives, or metal recovery. Choosing our slag drying equipment means turning industrial solid waste into a stable source of profit.
Our rotary dryer for slag is widely used in the following applications:
| Application | Typical Material | Purpose of Drying |
|---|---|---|
| Blast Furnace Slag Drying | Granulated blast furnace slag (GBFS), water-quenched slag | Reduce moisture to provide dry feed for slag powder production lines |
| Steel Slag Drying | Converter slag, electric furnace slag | Dewater for use in road materials, cement additives, or metal recovery |
| Non-Ferrous Slag Drying | Copper slag, nickel slag, lead-zinc slag | Prepare for magnetic separation or flotation to recover valuable metals |
| Slag Powder Preparation | Various types of slag | Drying is an essential pre-grinding step to ensure final product activity and output |
This slag drying equipment utilizes a co-current rotary drying process, specially reinforced to handle the high hardness and abrasiveness of slag.
Feeding & Breaking: Wet slag (moisture 20%-35%) is fed into the cylinder via a conveyor. A heavy-duty breaking device at the feed end forcibly disperses agglomerated slag, preventing blockage from large chunks.
High-Temperature Heat Exchange: A hot air furnace generates high-temperature hot air at 500°C-800°C (heat sources can include coal, natural gas, biomass, or waste heat), which fully contacts the slag inside the cylinder. The cylinder interior features combined lifting plates, constantly lifting the slag to form a uniform “material curtain” for efficient heat exchange.
Wear-Resistant Design: To address the abrasion caused by hard particles in slag, critical areas inside the cylinder are equipped with wear-resistant liners and reinforced welding processes, significantly extending equipment service life.
Gas-Solid Separation: The dried slag is discharged via a discharger, while dust-laden exhaust gas enters a high-efficiency pulse baghouse filter, ensuring emission concentrations meet strict standards for clean production.
| Dryer Size (Dia×Length) | Capacity (T/H) | Initial Moisture (%) | Final Moisture (%) | Total Power (kW) |
|---|---|---|---|---|
| Ф1.5×12m | 6 – 9 | ≤ 20 – 30 | ≤ 3 | 15 |
| Ф1.8×14m | 9 – 13 | ≤ 20 – 30 | ≤ 3 | 15 |
| Ф2.2×12m | 12 – 17 | ≤ 20 – 30 | ≤ 3 | 22 |
| Ф2.4×18m | 21 – 31 | ≤ 20 – 30 | ≤ 3 | 30 – 37 |
| Ф2.4×20m | 23 – 34 | ≤ 20 – 30 | ≤ 3 | 37 |
| Ф2.6×20m | 28 – 40 | ≤ 20 – 30 | ≤ 3 | 45 |
| Ф3.0×25m | 46 – 64 | ≤ 20 – 30 | ≤ 3 | 75 |
| Ф3.2×25m | 60 – 80 | ≤ 20 – 30 | ≤ 3 | 90 |
| Ф3.6×32m | ≥ 106 | ≤ 15 | ≤ 1 | 185 |
Specialized Experience in Metallurgical Industry: With over 15 years of experience serving the steel and non-ferrous metallurgical industries, we deeply understand the process challenges and customer pain points of blast furnace slag drying and steel slag drying.
Significantly Reduce Downstream Processing Costs: Dried slag with stable moisture of 2%-5% provides ideal feed for slag powder production lines, increasing grinding output by 20%-30% and reducing electricity consumption per ton of product.
Support Solid Waste Resource Utilization: Efficient drying transforms hard-to-handle industrial solid waste into high-value building material feedstocks or metal recovery feedstocks, aligning with global trends in circular economy and green mining.
Complete Turnkey Service: From material testing, process design, equipment manufacturing, to overseas installation, commissioning, and personnel training, we provide comprehensive EPC turnkey services.
Turn your slag from “waste” into “high-value resource”! If you are facing high slag stockpiling costs, environmental pressure, or struggling with moisture issues for your slag powder production line, contact us today.
Request a Customized Quote → Tell us your capacity requirements and heat source availability, and we will respond within 24 hours
Schedule a Technical Discussion → Speak one-on-one with our metallurgical industry engineers
