Introduction: After several months of hard work, the firing technology of the fly ash ceramic rotary kiln has finally completed the entire process from design, installation, commissioning to commissioning. The pilot test line is designed in full accordance with the ceramsite production process model. It not only has a systematic test function, but is also closer to the large-scale process effect. Its uniqueness is mainly manifested in the following aspects: 1. The process model adopts continuous production of rotary kiln, and has the entire production line process research and production functions. Nantong Enpur Thermal Energy&Technology Co.,Ltd , https://www.enpurwool.com
2. For the characteristics of fly ash pellets after granulation, a solidification device using waste heat from the exhaust gas is set up.
3. The system is equipped with two sets of cooling systems, vertical chiller or single chiller. According to the material characteristics of different users, it can be selected to enter the vertical chiller or single chiller to cool the chiller.
4. The kiln head, kiln tail and single cylinder cooler seals are made of flexible seals.
5. The bag filter is set at the kiln end so that the kiln exhaust gas can meet the emission requirements.
The main technical parameters are as follows:
1. Material: fly ash, material below 200 mesh, 80%~90%; auxiliary material 1,~5%; auxiliary material 2,~5%.
2. Rotary kiln specification: Φ0.8×15m, wall thickness 10mm; power 5.5KW; tilt: 4.5%; speed 0.54~5.41r/min.
3, firing temperature: 1150 ~ 1250 degrees.
4, material kiln residence time: 20 ~ 180min, achieved by frequency control.
5. Energy: Liquefied petroleum gas.
6, feeding method: driving hopper on the material.
7, feeding method: electromagnetic feeder feeding.
8, cooling method: vertical cooler, single cylinder cooler.
9, dust removal: pulse bag filter collection and processing.
10. Exhaust gas exhaust: Mechanical forced ventilation.
11, temperature measurement methods: kiln head, kiln tail, curing box, dust collector inlet 4 thermocouples.
12, pressure measurement method: kiln head, kiln tail, dust collector inlet 3 negative pressure transmitter.
13. Control method: centralized control of the electric control box on site, and the control of the combustion-supporting fan, cooler, rotary kiln, electromagnetic vibrating feeder, electric butterfly valve (2), dust-collecting fan start-stop switch in an electric control box The instrument box is displayed on site. In order to facilitate the operation and adjustment, the electric control box and the instrument box are placed on the kiln platform.
14. Chain control: The inlet temperature of the dust collector shall not be higher than 230 degrees; in normal operation, the inlet temperature of the dust collector is first adjusted by adjusting the opening degree of the electric butterfly valve 1 (cold air outlet valve of the cold smoke chamber) when the inlet temperature of the dust collector exceeds At 230 degrees, it is required to be linked with the electric butterfly valve 2 (dust collector inlet cold air valve). At this time, the valve is opened; according to the inlet temperature of the dust collector, the valve opening is manually adjusted.
The 50kg/h design idea of ​​the ceramic pilot test line is based on the industrial development and application of fly ash in the rotary kiln of the ceramic industry, taking into consideration the comprehensive industrial and mining conditions of other raw materials, and forming a pilot line with the original granulation. The perfect match formed a complete ceramic pilot test system. The completion of the pilot test line can fully meet the requirements of the process test and product formulation R&D, and can better meet the needs of frequent adjustments of the product formulation in the early stages of the development of small-scale new products.