Description
Cement rotary kilns calcine cement and other materials, converting raw materials into clinker. Generally speaking, this process consists of three stages: raw material preparation, clinker calcination, and cement grinding, commonly known as "two grindings, one burning." If pulverized coal preparation is included, the term can be changed to "three grindings, one burning."
Cement production can be categorized into two types, dry (including semi-dry) and wet (including semi-wet), depending on the raw material preparation method. Today, cement production primarily utilizes the new dry process, which preheats the raw material through the high temperatures of a preheater and exhaust gases before it enters the kiln. This decomposition of the calcium carbonate in the raw material into calcium oxide in the calciner results in over 90% of the calcium carbonate being converted to calcium oxide.
Equipment Advantages
01. Suitable for cement production lines with a capacity of 1,000 to 10,000 tons/day
Cement rotary kilns are available in various sizes, ranging from φ3.2 x 48m to φ4.8 x 74m, to meet the needs of various production capacities.
02. High Capacity, High Efficiency, and Low Heat Consumption
The cement rotary kiln calcining system utilizes innovative technologies, including a new hydraulic throttle mechanism, a high-precision metering plunger pump, a speed control valve, and a contact-type graphite block seal. This system delivers stable performance, high output, and low energy consumption.
03. Wide Range of Applications
Cement rotary kilns are widely used in a variety of production industries, including building materials, metallurgy, chemicals, and environmental protection.
Working Principle
A rotary kiln is a cylindrical structure with a slope of 3-3.5%. Its rotation promotes agitation of the materials within the kiln, allowing them to mix, contact, and react. Coal injection at the kiln head generates a large amount of heat, which is transferred to the materials through flame radiation, convection of hot gases, and conduction through the kiln bricks (kiln lining). The materials are moved forward within the kiln by the kiln's tilt and rotation.
Technical advantages
High quality castings
Our machines use high-quality materials and imported quality. Reduce the wear of accessories and increase the life of the machine.
Easy replacement of accessories
The lubrication system adopts polymer composite pipe, which effectively reduces the occurrence of oil leakage, and the novel design reduces the difficulty of installing parts.
Overload protection
When the unbreakable material falls into the crusher and the machine exceeds the normal load, the automatic stop device can automatically stop to avoid damage to the entire machine and ensure production safety.
Low noise and less dust
Through innovative R&D and design, our machine has the advantages of less dust, green and environmental protection, and passed the local environmental protection policy.
Technical parameters
| Specifications m | φ3.2x50 | φ3.3x54 | φ4x60 | φ4.2x60 | φ4.3x64 | φ4.5x66 | φ4.7x72 | φ4.8x72 | φ4.8x74 | φ5x60 | φ5.2x61 | ||
| Capacity t/d | 1200 | 1650 | 2500 | 2800 | 3200 | 4000 | 5000 | 5000 | 5000 | 5500 | 6000 | ||
| Kiln body slope % | 3.5 | 3.5 | 3.5 | 3.5 | 4 | 3.5 | 4 | 4 | 4 | 3.5 | 3.5 | ||
| Kiln speed | Number of supports | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | |
| Gear wheel type | Hydraulic | ||||||||||||
| Kiln body speed main drive rpm | 0.398-3.975 | 0.43-4.3 | 0.396-3.96 | 0.4165-4.165 | 0.449-4.49 | 0.41-4.1 | 0.45-4.5 | 0.403-4.03 | 0.35-4.0 | 0.4-4.0 | 0.38-3.79 | ||
| Slow transmission r/h | 11.585 | 8.04 | 8.56 | 10.35 | 8.86 | 11.65 | 12.6 | 11.47 | 8.52 | 11.02 | 6.53 | ||
| Main drive | Electric motor | Model | ZSN4-280-11B | ZSN4-315-092 | ZSN4-355-092 | ZSN4-355-12 | ZSN4-355-12 | ZSN4-400-22 | ZSN4-450-092 | ZSN4-400-22 | ZSN4-400-092 | ZSN4-450-097 | ZSN4-450-12 |
| Rated power kW | 190 | 220 | 315 | 420 | 450 | 560 | 710 | 630 | 630 | 710 | 800 | ||
| Speed range rpm | 150-1500 | 100-1000 | 100-1000 | 100-1000 | 100-1000 | 100-1000 | 100-1000 | 100-1000 | 150-1500 | 100-1000 | 100-1000 | ||
| Rated voltage v | 440 | 440 | 440 | 440 | 440 | 660 | 660 | 660 | 660 | 660 | 660 | ||
| Reducer | Model | ZL130-16 | ZSY500-31.5 | ZSY630-35.5 | ZSY710-35.5 | JH630C-SW305-25 | JH800C-SW306-35.5 | ZSY710-28 | YNS1760-31.5VDR | JH710C-SW305-40 | JH800C-SW306 | JH900C-SW305 | |
| speed ratio | 40.85 | 31.5 | 34.601 | 35.526 | 24.365 | 34.069 | 28 | 30.365 | 42.226 | 31.5 | 31.5 | ||
| Auxiliary drive | electric motor | Model | Y180L-4 | Y200L1-6 | Y200L-4 | Y225S-4 | Y225S-4 | Y250M-4 | Y280S-4 | Y280S-4 | Y250M-4 | Y280S-4 | Y250M-4 |
| Rated power kW | 22 | 18.5 | 30 | 37 | 37 | 55 | 75 | 75 | 55 | 75 | 55 | ||
| Rated speed rpm | 1470 | 970 | 1470 | 1480 | 1480 | 1480 | 1480 | 1480 | 1480 | 1490 | 1480 | ||
| Rated voltage v | 380 | 380 | 380 | 380 | 380 | 380 | 380 | 380 | 380 | 380 | 380 | ||
| reducer | Model | ZL50-10 | ZSX180-31.5 | ZL65-16 | ZSY280-35.5 | ZSY315-45 | ZSY280-31.5 | ZSY355-31.5 | YNS790-31.5IIR | JH220C-SW302-28 | ZSX355-31.5 | JH320C-SW302 | |
| speed ratio | 20.17 | 31.5 | 40.85 | 35.745 | 44.983 | 31.25 | 31.5 | 31.192 | 28.125 | 31.5 | 51.462 | ||
| Total weight t | 263 | 334.2 | 487.5 | 576.1 | 585 | 710.4 | 825 | 847 | 841 | 787 | 859 | ||
