GGBS Plant
Capacity: 200,000-1,500,000 t/y
Output Fineness: 420-500 m²/kg
Features: fully automatic, customizable, reasonable price
Blast furnace slag is a kind of solid waste generated by steel plants during the iron-making process. When iron ore, coke, and fluxing agents are smelted at high temperatures in a blast furnace, the impurities in the iron ore combine with the fluxing agents to form molten slags. These slags float on the surface of the molten iron, after being discharged, undergo water quenching to form granulated blast furnace slag.
GGBS plant (ground granulated blast furnace slag plant), also known as GGBFS plant, is specially designed to further process granulated blast furnace slag into slag powder. It is the most crucial step in transforming granulated blast furnace slag from waste into a valuable resource. After processing, the slag powder can be sold as a product and applied in various industries.
Wide Application Of GGBS
Slag cement production: blast furnace slag powder can be used as a cement admixture to replace part of the cement clinker (20%-70%) in the production of slag silicate cement, enhancing the durability and sulfate resistance of the cement.
Concrete mixing: as a mineral admixture for concrete, blast furnace slag powder can improve the strength and durability of concrete. Each cubic meter of slag powder can replace 50 to 80 kg of cement, significantly reducing the cost.
Agricultural application: blast furnace slag powder can be applied to improve acidic soils, adjust the soil pH, enhance soil fertility and structure, and provide trace elements.
Road engineering: blast furnace slag powder is available in the production of pavement concrete to enhance the skid resistance and durability of the surface. It is also a subgrade stabilizer to improve the bearing capacity and stability of the subgrade.
Why Choose To Invest In GGBS Plant?
Easy obtained raw materials: global steel production is immense, and approximately 0.3-0.5 tons of blast furnace slags are generated for every ton of pig iron produced.
Broad product market: slag powder can be widely used in the construction industry, agriculture industry, road engineering, and environmental protection, ensuring a steady demand.
Low-price raw materials: since the production cost of blast furnace slag is already included in the steel manufacturing process, its price as a raw material is typically low.
Well-established production process: the grinding technology for blast furnace slag is highly mature and not complex, making it easy for new investors to get started.
Short payback period: typically, the initial investment can be recouped within 1 to 3 years.
AGICO is a professional cement equipment supplier. We provide customized cement production solutions for customers around the world. In addition, we have extensive experience in the construction of lime production lines and various grinding plants. The GGBS plant is one of our best-selling projects. We offer a variety of slag grinding processes and corresponding equipment to meet the diverse production needs of our clients. If you have any requirements, please feel free to contact us >>!
GGBS Manufacturing Process
The production process of GGBS can be divided into two types: vertical mill finish grinding and ball mill and roller press combined grinding.
Vertical Mill Finish Grinding
The slag is first transported via a belt conveyor to the crusher for initial crushing. During the conveying process, the slag undergoes de-ironing and screening through a magnetic separator and vibrating screen. After the initial crushing, the slag is lifted into a vertical mill for grinding. The ground slag powder, aided by hot air from a hot blast stove, enters a powder separator for classification and is simultaneously dried. The slag powder that meets the fineness requirements is collected by a bag filter and transported via an air slide conveyor and elevator into the finished product silo. The slag powder that does not meet the requirements is returned to the vertical mill for further grinding.
Ball Mill & Roller Press Combined Grinding
The slag is first sent into a dryer for moisture removal by a belt conveyor. During the conveying process, the slag undergoes de-ironing and screening through a magnetic separator and vibrating screen. After that, the dried slag is fed into a roller press to be ground into slag powder. The slag powder is then lifted by a bucket elevator to a separator for classification. The slag powder with qualified particle size is conveyed by an air slide conveyor and elevator to a ball mill for further grinding. The coarse particles are returned to the roller press for re-grinding. A dust collector is installed at the discharge end of the ball mill, and the qualified slag powder collected by the dust collector is delivered to the finished product silo.
Vertical Mill Finish Grinding Systems Vs Ball Mill Combined Grinding Systems
Vertical mill finish grinding system and ball mill combined grinding system are currently the most efficient and commonly used slag grinding systems, each with its own advantages and disadvantages. AGICO offers customized solutions for both types of GGBS production systems.
Vertical Mill Finish Grinding System
The equipment is minimal, and under normal operating conditions, it produces low noise and minimal dust pollution (emission ≤ 30mg/Nm³).
5 major systems: feeding system, vertical roller mill, finished powder classification system, finished powder collection system, and finished powder conveying system.
Small footprint, saving more than 30% of the area compared to the ball mill combined grinding system.
Energy savings of 30-60% (system power consumption is 36 kWh/t).
Adjustable powder fineness and the ability to separately grind different types of materials, such as cement clinker, etc.
By equipping a hot air system, the material drying process can be completed inside the mill, and the use of recirculating air also improves heat utilization efficiency.
System operating rate: 93% – 97%.
Ball Mill Combined Grinding System
Strong material adaptability, large specific surface area, and powder particle shape superior to that of vertical mill finish grinding systems.
7 major systems: feeding system, roller press, semi-finished powder classification system, closed-circuit ball mill, finished powder classification system, finished powder collection system, and finished powder conveying system.
There are many pieces of equipment, so the system occupies a larger area. However, dust emissions are controllable, at ≤ 30mg/Nm³.
System power consumption is 80 kWh/t.
Adjustable product fineness and the ability to separately grind different types of materials, such as cement clinker, etc.
The drying process cannot be completed inside the mill and requires additional drying equipment.
System operating rate: 85% – 95%.
AGICO Slag Grinding Equipment For Sale
Air Slide Conveyor
Magnetic Separator
Slag Ball Mill
* We only list part of the equipment. If you want to get the detailed equipment configuration of the whole GGBS plant, please send us an inquiry. We will provide a configuration list and corresponding quotation for your production needs.
| Slag Vertical Mill | |||||
| Model | Grinding Disc Diameter(mm) | Grinding Roller Median Diameter(mm) | Grinding Roller Quantity | Power(kW) | Capacity(t/h) |
| AGI33.31 | 3200 | 1700 | 3 | 1600 | 50 |
| AGI35.41 | 3500 | 1800 | 4 | 1800 | 60 |
| AGI40.41 | 4000 | 1900 | 4 | 2240 | 70 |
| AGI43.41 | 4300 | 2120 | 4 | 2800 | 90 |
| AGI46.41 | 4600 | 2240 | 4 | 3150 | 105 |
| AGI48.41 | 4800 | 2240 | 4 | 3550 | 125 |
| AGI50.41 | 5000 | 2360 | 4 | 3800 | 140 |
| AGI53.41 | 5300 | 2500 | 4 | 4200 | 160 |
| AGI56.61 | 5600 | 2500 | 6 | 5000 | 180 |
| *(MFs)=0.9-1; Max material moisture=15%; Fine powder moisture=0.5-1%; The specific parameters can be adjusted based on the materials and customer requirements. | |||||
| Slag Ball Mill & Roller Press | |||
| Ball Mill | Roller Press | Capacity(t/h) | Power Consumption(KWh/t) |
| φ2.6x13m | AG120-80 | 27-31 | 13-15 |
| AG150-100 | 38-45 | 36-42 | |
| φ3.2x13m | AG150-100 | 45-53 | 13-15 |
| AG160-140 | 55-65 | 36-42 | |
| φ3.8x13m | AG160-140 | 70-82 | 13-15 |
| AG180-160 | 82-95 | 36-42 | |
| φ4.2x13m | AG180-160 | 98-110 | 13-15 |
| AG200-180 | 110-125 | 36-42 | |
| *The above refers to the conventional configuration for closed-circuit grinding to produce slag powder with a specific surface area of 450 m²/kg. If the ball mill system is open-circuit, the output is approximately 90% of the closed-circuit system. | |||
GGBS Production Line Estimated Costs
Taking a 600000-ton annual output GGBS production line as an example, the total investment for this project is 50 million RMB, and the equipment investment cost was recovered within just two years. It is currently in a pure profit state. Please refer to the table below for detailed cost calculations:
| Investment | Total Investment | 50 million RMB |
| Cost | Material Costs | ≈70 RMB/ton |
| Production Costs(including wages, electricity fees, coal fuel, maintenance and management costs, sales expenses, etc.) | ≈50 RMB/ton | |
| Profit Calculation | Sales Price | 160 RMB/ton |
| Profit Per Ton | 40 RMB/ton | |
| Annual Profit | 24 million RMB | |
| Economic Benefit | Recovering all investment in 2 years | It is currently in a state of pure profit |
| Quality Of Slag Powder | Specific Surface Area | 420-500㎡/kg |
| 7-day Activity Index | about 100% |
Highlights Of AGICO GGBS Production Line
AGICO provides turnkey projects, from civil construction to equipment commissioning, allowing customers to efficiently put into slag powder production with minimal effort.
AGICO has strong manufacturing capabilities, strict product quality control, and short delivery times. We have an independent installation and after-sales team to ensure the project is completed on schedule.
AGICO slag grinding plants have significant advantages, including a simple process flow, high grinding efficiency, low energy consumption, low wear, high automation control, and low operating costs.
The production line is equipped with a PLC/DCS automatic control system, which allows for remote control and simple operation.
The new high-efficiency powder separator ensures that the specific surface area of the finished product can be flexibly adjusted between 420 to 550 m²/kg, meeting customer requirements for various fineness of slag powder.
All equipment spare parts are produced by AGICO, ensuring guaranteed quality and greatly reducing the problem of customers being unable to find spare parts later on.
The iron removal device ensures a cast iron recovery rate of 0.2-0.3%. For each ton of slag powder produced, higher metal recovery revenue can be obtained, while also reducing the consumption of wear parts and lowering maintenance costs.
Why Choose AGICO
Free One-to-one Consultation
Production Line Design Service
Safe & On-time Delivery
GGBS Plant Construction
Equipment Installation & Debugging
Staff Training Service
Spare Parts Supply
Vertical Lathe Group
Engine Lathe
φ5m Vertical Lathe
CNC Cutting Machine
Shot Blasting Machine
