Instruction Manual for Water-Cooled Cement Cooler
Ⅰ.Overview
As cement grinding equipment becomes larger and grinding processes more complex, coupled with rising temperatures of the feed material (clinker) entering the mill, the temperature of the cement after grinding continues to reach new highs. Excessively high cement temperatures not only adversely affect cement quality (causing false setting due to gypsum dehydration) but also have negative impacts on subsequent conveying, packaging, transportation, and concrete quality. For example, high-temperature cement can cause premature aging of steel-cord conveyor belts, affecting their service life, and lead to issues such as a higher breakage rate in packaging bags due to aging. Therefore, the cooling of cement is of critical importance.
II. Cooling Principle
A series of cooling water tanks are installed within a chamber where the cement has been thoroughly aerated. By increasing the contact area between the cooling water tanks and the cement, heat exchange efficiency is improved, allowing a larger volume of cement to be cooled more thoroughly and, consequently, achieving a significant reduction in temperature. Since the cement has been thoroughly aerated and possesses excellent flowability, material can be fed in and discharged at the same horizontal level, facilitating the process layout of the cement cooler.
III. Features
The cooling water uses a closed-loop circulation system, eliminating any environmental impact on the quality of the circulating water. Energy consumption per metric ton ≤ 0.5 kW/t The process layout is simple, allowing for horizontal feeding and discharge. When the material temperature is above 95°C and the water temperature is below 30°C, the cooling effect exceeds 30°C.
IV. Requirements for Materials to Be Cooled
1. The material must be in powder form, with less than 15% of particles finer than a specified size.
2. Moisture content must be less than 1.5%.
3. Bulk density must be less than 2 × 10³ kg/m³.
4. The material must be non-viscous.
V. Ordering Guidelines
1. Select the equipment model based on the processing capacity and the required temperature reduction.
2. Select the installation location based on the equipment’s external dimensions.
3. Select the process flow and design the actual dimensions of the equipment based on the on-site location.
4. Select the equipment’s feed and discharge configurations based on the practical process flow.
5. Ensure that the cooler operates under sufficient negative pressure.
6. The user must have a cooling water circulation system in place, including a cooling tower, a recirculation tank, and other necessary components.
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