Pre-heater Manufacturers, Custom Pre-heater Company

Pre-heater

In cement production lines, preheaters combine raw material powder with high-temperature exhaust gas at the kiln tail through the synergistic effect of suspension preheating and partial decomposition to form a multi-stage heat exchange system, which greatly improves energy utilization and production efficiency. The preheater uses components such as cyclones, air ducts, spreading devices and air lock valves to form an efficient dispersion and separation mechanism for gas and solid phases. The preheater uses multi-stage suspension heat exchange to gradually reduce the temperature of exhaust gas at the kiln tail and improve the utilization rate of thermal energy. In actual operation, the stability of the preheater directly affects production continuity.

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Jiangsu Haijian Co., Ltd was established in 1970 and was restructured into a provincial privately-owned joint-stock company in 2003. The company currently employs over 300 people, with engineering and technical personnel accounting for 25% of the total workforce. It covers an area of 100,000㎡ and has a building area of 55,000㎡. We currently possess vertical lathes ranging from Φ2.5-10m in diameter; gear hobbing machines with Φ2-8m capacity; floor-type lathes with Φ5×16m and Φ7×20m capacities; overhead cranes ranging from 10-150t; plate rolling machines from 30-120; gas annealing furnaces measuring 6.5×6.5×18m; and automatic drying and spraying booths, with a total of 500 units/sets of various equipment.
Jiangsu Haijian Co., Ltd is a professional China Pre-heater Manufacturers and Pre-heater Company. We provide professional cement production equipment, industrial solid waste incineration equipment, and professional equipment for mining and metallurgical applications.We are a major manufacturing enterprise, a key backbone enterprise, and a primary export base for cement, power, environmental protection, and metallurgical and mining equipment in China. The company has the legal rights to independently manage the import and export of its products and is legally authorized to undertake general contracting for foreign projects.

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Industry knowledge

As a key piece of equipment in cement production lines, the preheater utilizes the synergistic effect of multi-stage suspension heat exchange and pre-calcination technology to shift the preheating and partial decomposition of raw meal powder to an earlier stage. This reduces the heat load on the rotary kiln and lowers the heat consumption of cement production, resulting in energy savings of over 40% compared to traditional wet processes. Its stable operation is directly related to system output, coal consumption, and emissions, making it a key component in optimizing energy efficiency in cement production.

Installing a suspension preheater at the tail end of a dry-process cement rotary kiln suspends the incoming raw meal in the flue gas, exchanging heat with the flue gas and preheating and decomposing it before calcination. This equipment features low heat consumption per unit product, high kiln output per unit volume, strong raw meal adaptability, high feed material decomposition rate, and resistance to scaling and clogging. Jiangsu Haijian Co., Ltd. is a professional preheater manufacturer and preheater company. We provide specialized equipment for cement production, industrial solid waste incineration, and specialized equipment for mining and metallurgical applications. We are a leading manufacturer of cement, power, environmental protection, and metallurgical mining equipment in China.

The preheater is a gas-solid multiphase heat exchange system, typically utilizing a 4-6-stage cyclone arrangement in series. Each stage consists of a cyclone separator, air duct, material spreading device, and air lock valve.
Material Flow:
Raw material is fed into the C1 cyclone inlet duct and undergoes heat exchange with the airflow down each stage.
After pre-decomposition in the calciner (decomposition efficiency ≥ 90%), it enters the rotary kiln for calcination.
Airflow Path:
High-temperature flue gas at the kiln outlet, at 1100°C, flows upward in a countercurrent.
The temperature decreases by 100-150°C after each heat exchange stage, ultimately reducing the discharge temperature to ±320°C.
Core Component Functions:
Cyclone separator: Gas-solid separation efficiency ≥ 95% (C1 stage reaches 98%).
Material spreading device: Ensures thorough dispersion of the raw material in the air duct (dispersion > 85%).
Air lock valve: Prevents short-circuiting of the airflow (leakage rate < 3%).

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