Slag grinding unit
Processing material: slag produced in the iron-making process in blast furnaces
Final product: ground granulated blast-furnace slag (GGBS or GGBFS)
Output: 300-2,000 thousand tons/year
Fineness: specific surface area of product≥420 m2/kg
A slag grinding plant is also referred to as a slag grinding unit, a GGBS grinding unit, or a GGBFS production line. As its name indicates, the plant aims at producing ground granulated blast furnace slag, a fine powder with a specific fineness (marked as a specific surface area). The finished GGBS powder is a substitution for part of conventional Portland cement used in concrete mixers, significantly reducing the side effects on the environment while enhancing the properties of concrete.
GGBS Plant Solution Provider
About Sinoma
SINOMA Zibo is capable of undertaking general contracting of the slag grinding plant including design, production, delivery, installation, and debugging. To fit specific production requirements, a wide range of capacity from 300,000 to 2,000,000 tons/year provides customers with more choices. The configuration of the GGBS plant varied depending on the niche capacity. With strong scientific and engineering ability, a series of vertical roller mills and related equipment are designed and developed to complete the production efficiently as well as save energy and costs.
Highlights of Slag Grinding Plant Designed By SINOMA
Energy saving and environmental protection
Using a vertical roller mill and high-efficiency separator can greatly improve the grinding efficiency and reduce power consumption and dust release. Statistics from our former customers show that the power consumption index is better than the industry average index.
High automation degree
Advanced automatic controlled systems are equipped to level up productivity and guarantee product quality.
Stable operation and quality
The vertical roller mill work is stable for dozens of hours. The quality ground granulated blast furnace slag is stable and its property meets the standards for concrete mixers after the process of classification and dust removal.
Why Us?
Our strength
Intellectual property rights owned by the company
We possess proprietary intellectual property rights of key equipment in slag grinding plants. The vertical roller mill produced by our company has been proven durable and reliable during slag grinding operations.
EPC service
We offer one-stop solutions for slag grinding plants so that our customers take less time, less energy, less costs, and lower risks. The contract price is strictly controlled, and the engineering cycle is clear and carried out efficiently.
Rich Experience
The company has been devoted to providing grinding solutions for GGBS, GSS, cement, clinker, etc. materials. Our equipment and complete plant solutions are delivered both domestically and abroad.
Talented team
Our company is a subsidiary of Tianjin Cement Design & Research Institute Co., Ltd., we share the technology and expertise from it. What’s more, we inherited rich project experience from its mother company Sinoma International Engineering Co., Ltd.
Equipment For Slag Grinding Plant
A GGBS production line main includes slag feeding equipment, a bucket elevator, a dust collector, a slag vertical mill, a powder separator, a fan, a funnel, a conveyor belt, a hot-blast stove, and a finished product storage facility.
The benefit of the key equipment- vertical mill
The following advantages are examples based on the LMR series slag vertical mill. For details of other types of cement vertical mills, contact us!
Special design
LRM series slag vertical mill can realize no(light)-load starting. The specially designed structure reduces vibration and has less spary. The water spraying device stabilizes the material layer and lowers heat consumption.
Smooth running
The slag vertical mill adopts a hydraulic system, the operating pressure is low, and the mill runs smoothly.
High efficiency
The slag vertical mill is facilitated with 4 same grinding rollers. The main and auxiliary roller can be switched at any time, which greatly improves the operation efficiency while keeping the costs at a low level.
Easy maintenance
The roller device can be turned out using the roll-turning device, which is convenient for maintenance.
GGBS manufacturing process
The manufacturing of GGBS goes through material taking, transportation, feeding, grinding, separating, drying, regrinding, slag powder collecting, and storage.
The forklift takes the heaped slag, feeds it, and uses a belt conveyor to transport it.
The elevator carries the slag into the slag vertical mill so that it can be ground. The powder separator then gathers the slag powder and uses a hot blast stove to dry it.
After being dried and ground, the slag powder is collected using a powder separator and sent to a vertical mill for regrinding. The approved powder is then transferred to a finished product warehouse.
1. Slag feeding equipment
2. Bucket elevator
3. Dust collector
4. Slag vertical mill
5. Powder separator
6. Fan
7. Funnel
8. Conveyor belt
9. Hot-blast furnace
10. Finished product storage
why produce GGBS?
Why GGBS?
Reduce costs of cement production
After the slag is ground, it can be directly added to the finished 42.5 cement at about 30%, which can achieve the same strength as the original cement, save a lot of cement clinker, and reduce the cost of cement production.
Reduce concrete costs and enhance its strength and durability
In the original mix ratio of concrete, each cubic meter of concrete slag powder can replace 50 to 80 kg of cement, which can reduce the cost of concrete production and greatly improve the density and durability of concrete.
What is GGBS?
GGBS is the short term for ground granulated blast furnace slag. It is a by-product of the iron-making process in blast furnaces. The initial form of the GGBS is molten iron slag which is then quenched, dried, and ground into fine powders.
Physical properties: A finely power with glassy nature and a particle size distribution which makes concrete durable.
Chemical properties: It can increase the strength of the concrete mix because of the additional biding yield in the chemical reaction. (silicates and alumina silicate of lime form GGBS reacts with calcium hydroxide in cement).
GGBS production line key equipment configurations
150 thousand tons/year ggbs powder production line
| Equipment | Parameters |
|---|---|
| LRMS22.2 vertical mill for slag | Capacity: ≥20t/h, Specific surface area of product: ≥420m2/kg, Power: 630kW |
| Hot-blast stove | Heating capacity: 0.4×107 kcal/h |
| Dust collector | Airflow: 80000 m³/h, Filter area: 1594 m2 Filtration velocity: 0.80～0.85 m/min Inlet dust concentration: ≤800g /Nm3 Outlet dust concentration: ≤30mg/Nm3 |
| Fan | Total pressure: 7200 Pa Airflow: 80000 m3/h Power: 220 kW |
200 thousand tons/year ggbs powder production line
| Equipment | Parameters |
|---|---|
| LRMS25.2 vertical mill for slag | Capacity: ≥28t/h, Specific surface area of product: ≥420m2/kg, Power: 900kW |
| Hot-blast stove | Heating capacity: 0.5×107 kcal/h |
| Dust collector | Airflow: 112000 m³/h, Filter area: 2196 m2 Filtration velocity: 0.80～0.850.80m/min Inlet dust concentration: ≤800g /Nm3 Outlet dust concentration: ≤30mg/Nm3 |
| Fan | Total pressure: 7200 Pa; Airflow: 112000 m3/h Power: 315kW |
300 thousand tons/year ggbs powder production line
| Equipment | Parameters |
|---|---|
| LRMS36.3 vertical mill for slag | Capacity: ≥45 t/h, Specific surface area of product: ≥420m2/kg, Power: 1600 kW |
| Hot-blast stove | Heating capacity: 0.9×107 kcal/h |
| Dust collector | Airflow: 180000 m³/h, Filter area: 3659 m2 Filtration velocity: 0.80～0.85 m/min Inlet dust concentration: ≤800g /Nm3 Outlet dust concentration: ≤30mg/Nm3 |
| Fan | Total pressure: 7200 Pa; Airflow: 180000 m3/h Power: 500 kW |
450 thousand tons/year ggbs powder production line
| Equipment | Parameters |
|---|---|
| vertical mill for slag | Capacity: ≥65 t/h, Specific surface area of product: ≥420m2/kg, Power: 2000 kW |
| Hot-blast stove | Heating capacity: 1.3×107 kcal/h |
| Dust collector | Airflow: 260000 m³/h, Filter area: 5352 m2 Filtration velocity: 0.80～0.85 m/min Inlet dust concentration: ≤800g /Nm3 Outlet dust concentration: ≤30mg/Nm3 |
| Fan | Total pressure: 7200 Pa; Airflow: 260000 m3/h Power: 710 kW |
500 thousand tons/year ggbs powder production line
| Equipment | Parameters |
|---|---|
| LRMS38.3 vertical mill for slag | Capacity: ≥75 t/h, Specific surface area of product: ≥420m2/kg, Power: 2500 kW |
| Hot-blast stove | Heating capacity: 1.5×107 kcal/h |
| Dust collector | Airflow: 300000 m³/h, Filter area: 6116 m2 Filtration velocity: 0.80～0.85 m/min Inlet dust concentration: ≤800g /Nm3 Outlet dust concentration: ≤30mg/Nm3 |
| Fan | Total pressure: 7200 Pa; Airflow: 300000 m3/h Power: 800 kW |
600 thousand tons/year ggbs powder production line
| Equipment | Parameters |
|---|---|
| LRMS43.3 vertical mill for slag | Capacity: ≥90 t/h, Specific surface area of product: ≥420m2/kg, Power: 3150 kW |
| Hot-blast stove | Heating capacity: 1.8×107 kcal/h |
| Dust collector | Airflow: 360000 m³/h, Filter area: 7319 m2 Filtration velocity: 0.80～0.85 m/min Inlet dust concentration: ≤800g /Nm3 Outlet dust concentration: ≤30mg/Nm3 |
| Fan | Total pressure: 7200 Pa; Airflow: 360000 m3/h Power: 1000 kW |
800 thousand tons/year ggbs powder production line
| Equipment | Parameters |
|---|---|
| LRMS46.3 vertical mill for slag | Capacity: ≥115 t/h, Specific surface area of product: ≥420m2/kg, Power: 3550 kW |
| Hot-blast stove | Heating capacity: 2.3×107 kcal/h |
| Dust collector | Airflow: 460000 m³/h, Filter area: 8782 m2 Filtration velocity: 0.80～0.85 m/min Inlet dust concentration: ≤800g /Nm3 Outlet dust concentration: ≤30mg/Nm3 |
| Fan | Total pressure: 7200 Pa; Airflow: 460000 m3/h Power: 1250 kW |
900 thousand tons/year ggbs powder production line
| Equipment | Parameters |
|---|---|
| LRMS50.3 vertical mill for slag | Capacity: ≥130 t/h, Specific surface area of product: ≥420m2/kg, Power: 4000 kW |
| Hot-blast stove | Heating capacity: 2.6×107 kcal/h |
| Dust collector | Airflow: 520000 m³/h, Filter area: 10873 m2 Filtration velocity: 0.80～0.85 m/min Inlet dust concentration: ≤800g /Nm3 Outlet dust concentration: ≤30mg/Nm3 |
| Fan | Total pressure: 7200 Pa; Airflow: 520000 m3/h Power: 1400 kW |
1 million tons/year ggbs powder production line
| Equipment | Parameters |
|---|---|
| LRMS53.3 vertical mill for slag | Capacity: ≥140 t/h, Specific surface area of product: ≥420m2/kg, Power: 4500 kW |
| Hot-blast stove | Heating capacity: 2.8×107 kcal/h |
| Dust collector | Airflow: 560000 m³/h, Filter area: 10873 m2 Filtration velocity: 0.80～0.85 m/min Inlet dust concentration: ≤800g /Nm3 Outlet dust concentration: ≤30mg/Nm3 |
| Fan | Total pressure: 7200 Pa; Airflow: 560000 m3/h Power: 1600 kW |
1.2 million tons/year ggbs powder production line
| Equipment | Parameters |
|---|---|
| LRMS56.3 vertical mill for slag | Capacity: ≥170 t/h, Specific surface area of product: ≥420m2/kg, Power: 5400 kW |
| Hot-blast stove | Heating capacity: 3.4×107 kcal/h |
| Dust collector | Airflow: 680000 m³/h, Filter area: 13592 m2 Filtration velocity: 0.80～0.85 m/min Inlet dust concentration: ≤800g /Nm3 Outlet dust concentration: ≤30mg/Nm3 |
| Fan | Total pressure: 7200 Pa; Airflow: 680000 m3/h Power: 1800 kW |
1.5 million tons/year ggbs powder production line
| Equipment | Parameters |
|---|---|
| LRMS63.3 vertical mill for slag | Capacity: ≥210 t/h, Specific surface area of product: ≥420m2/kg, Power: 6500 kW |
| Hot-blast stove | Heating capacity: 3.4×107 kcal/h |
| Dust collector | Airflow: 840000 m³/h, Filter area: 16310 m2 Filtration velocity: 0.80～0.85 m/min Inlet dust concentration: ≤800g /Nm3 Outlet dust concentration: ≤30mg/Nm3 |
| Fan | Total pressure: 7200 Pa; Airflow: 840000 m3/h Power: 2240 kW |
1.8 million tons/year ggbs powder production line
| Equipment | Parameters |
|---|---|
| LRMS66.4 vertical mill for slag | Capacity: ≥250 t/h, Specific surface area of product: ≥420m2/kg, Power: 8000 kW |
| Hot-blast stove | Heating capacity: 5.0×107 kcal/h |
| Dust collector | Airflow: 1000000 m³/h, Filter area: 19880 m2 Filtration velocity: 0.80～0.85 m/min Inlet dust concentration: ≤800g /Nm3 Outlet dust concentration: ≤30mg/Nm3 |
| Fan | Total pressure: 7200 Pa; Airflow: 1000000 m3/h Power: 2800 kW |
2 million tons/year ggbs powder production line
| Equipment | Parameters |
|---|---|
| LRMS70.4 vertical mill for slag | Capacity: ≥280 t/h, Specific surface area of product: ≥420 m2/kg, Power: 8500 kW |
| Hot-blast stove | Heating capacity: 5.6×107 kcal/h |
| Dust collector | Airflow: 1120000 m³/h, Filter area: 21400 m2 Filtration velocity: 0.80～0.85 m/min Inlet dust concentration: ≤800 g/Nm3 Outlet dust concentration: ≤30m g/Nm3 |
| Fan | Total pressure: 7200 Pa; Airflow: 1120000 m3/h Power: 3000 kW |