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Help CenterRotary Kiln for Blast Furnace Slag Processing 800 Tpd
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Product Introduction
The 800 TPD (Tons Per Day) Blast Furnace Slag Processing Rotary Kiln is a large-scale, high-efficiency industrial thermal processing unit designed for the advanced recycling and value-added treatment of blast furnace slag. Blast furnace slag, a major by-product of ironmaking, possesses excellent latent hydraulic properties.
This 800 TPD rotary kiln system is engineered to dry, calcine, or thermally activate granulated blast furnace slag. By optimizing the mineral structure and removing moisture, the kiln transforms raw slag into highly reactive material suitable for producing premium slag powder, high-grade cement additives, or specialized building materials. It offers iron and steel enterprises an ideal path to achieve circular economy goals and increase profitability.
Working Principle
The operation of the 800 TPD blast furnace slag rotary kiln utilizes targeted thermal exposure and counter-current heat exchange to remove moisture and alter mineral properties:
Material Input: Moist granulated blast furnace slag is continuously fed into the kiln through the feeding pipe located at the kiln tail, which is the higher end of the system.
Heat Exchange and Advance: The kiln body is installed at a specific incline of 3.5 percent to 4 percent. As the kiln shell rotates slowly under the power of the drive system, the slag is lifted and tumbled by the internal lining. This tumbling motion exposes the slag uniformly to the hot gas stream flowing from the opposite direction, while gravity gently moves the material downward toward the lower end, known as the kiln head.
Thermal Activation and Drying: High-efficiency burners at the kiln head burn pulverized coal, natural gas, or blast furnace gas to generate high-temperature airflow. As the slag travels through the drying and heating zones, moisture is rapidly evaporated. For specific applications requiring activation, the slag is heated to precise temperatures to optimize its vitreous content and glassy structure without causing over-sintering, preserving its maximum hydraulic activity.
Discharge and Final Handling: The processed and dried slag is discharged from the kiln head at the lower end. It then enters a cooling device or is directly conveyed to grinding mills where it is pulverized into ultra-fine blast furnace slag powder for the market.
Product Features
High Throughput and Thermal Efficiency: Specially designed for the 800 TPD capacity, the kiln internal structure features optimized lifting flights or internal lifters. These components maximize the contact area between the slag and the hot air, achieving excellent drying and heat transfer rates while minimizing fuel consumption.
Preservation of Hydraulic Activity: The thermal control system allows for precise regulation of internal temperatures. This prevents the slag from overheating, ensuring that the crystalline phase does not transform into an inert state, thereby maintaining the high hydraulic reactivity required for cement applications.
Heavy Duty Construction for High Moisture Materials: Raw blast furnace slag often carries high initial moisture. The kiln shell is fabricated from high-strength carbon steel plates designed to resist thermal shock and stress caused by moisture evaporation, ensuring a long operational life without deformation.
Advanced Anti-Sticking Design: Blast furnace slag can become sticky under certain moisture and temperature conditions. The internal geometry and refractory lining are engineered with anti-accumulation features to prevent material ring formation and clogging, guaranteeing continuous and stable operation.
Integrated PLC Automation and Sealing: The entire system is managed via an automated PLC network that syncs the kiln rotational speed, raw material feeding rate, and fuel injection. Combined with high-performance labyrinth or scale seals at the kiln ends, the system eliminates dust leakage and negative pressure disruptions, ensuring compliance with strict environmental regulations.
Technical parameters
Model |
Speed (r/min) |
Inclination (%) |
Capacity (t/h) |
Gearbox Model |
Ratio |
Motor Model |
Motor Power (kW) |
Motor Speed (r/min) |
Thrust Roller Type |
Support Count |
Weight (t) |
Φ1.9/1.6x36 |
0.53-1.59 |
4 |
2.5-3 |
JZQ750-1 |
48.58 |
JZT-72-4 |
30 |
1200/400 |
Mechanical |
3 |
53 |
Φ2.1/1.8x36 |
0.5-1.51 |
4 |
4 |
UT2-110 |
163.38 |
JZS-81 |
30/10 |
1410/470 |
-- |
3 |
75 |
Φ1.2x25 |
0.5-1.6 |
3 |
-- |
PM650 |
40.17 |
JZTY71-4 |
22 |
1200/120 |
-- |
3 |
34 |
Φ1.6x32 |
0.158-0.258 |
3 |
-- |
PM750 |
48.57 |
JZJY61-4 |
15 |
1200/120 |
-- |
3 |
46.82 |
Φ1.8x45 |
0.66-1.98 |
4 |
3.5 |
UT2-110 |
163.38 |
JZS-81 |
30/10 |
1410/470 |
-- |
3 |
80 |
Φ2.2x50 |
0.125-1.25 |
3.5 |
4 |
ZS145-11 |
157 |
YCT280-4A |
30 |
1320/132 |
-- |
3 |
130.7 |
Φ2.5x50 |
0.516-1.549 |
3.5 |
5.5 |
ZS165-7 |
99.96 |
YCT355-4A |
55 |
1320/440 |
-- |
3 |
167.5 |
Φ3x48 |
0.3309-3.309 |
3.5 |
35 |
ZL130-14 |
32.11 |
ZSN4-250-21B |
90 |
1000/100 |
-- |
3 |
237 |
Φ3.2x50 |
0.398-3.975 |
3.5 |
50 |
ZL130-16 |
40.85 |
ZSN4-280-11B |
190 |
1500/150 |
-- |
3 |
263 |
Φ3.3x52 |
0.391-3.91 |
3.5 |
50 |
ZSY500-28 |
27.707 |
ZSN4-315-082 |
190 |
1000/100 |
-- |
3 |
280.8 |
Φ4x60 |
0.396-3.96 |
3.5 |
104 |
ZSY630-35.5 |
34.601 |
ZSN4-355-092 |
315 |
1000/100 |
Hydraulic |
3 |
487.5 |
Φ4.2x60 |
0.4165-4.165 |
3.5 |
116 |
ZSY710-35.5 |
35.526 |
ZSN4-355-12 |
420 |
1000/100 |
-- |
3 |
576.1 |
Φ4.3x62 |
0.398-3.98 |
3.5 |
125 |
ZSY710-35.5 |
35.714 |
ZSN4-355-12 |
420 |
1000/100 |
-- |
3 |
598.5 |
Φ4.8x74 |
0.35-4 |
4 |
208 |
JH710C-SW305-40 |
42.226 |
ZSN4-400-092 |
630 |
1500/130 |
-- |
3 |
841 |
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