Technical parameters of improved calcium hydroxide production line
Calcium hydroxide, as a basic chemical raw material, is widely used in fields such as environmental protection, building materials, and medicine. The improved calcium hydroxide production line has achieved increased production capacity, reduced energy consumption, and stable product quality through optimized process design and equipment configuration. Its core technical parameters directly determine the operational efficiency and product competitiveness of the production line. The specific parameter system is as follows:
1、 Raw material processing parameters
High quality quicklime with particle size ≤ 50mm is selected as the raw material, with CaO content ≥ 90% and MgO content ≤ 1.5%, to avoid impurities affecting product purity. The effective volume of the raw material warehouse is designed to be 10-15m ³, equipped with a vibrating feeder. The feeding amount can be adjusted by frequency conversion within the range of 1-5t/h to ensure uniform conveying of raw materials. The processing capacity of the jaw crusher is 5-8t/h, and the particle size of the crushed lime is controlled at 3-5mm to meet the requirements of subsequent digestion reactions. The dust emission in the crushing process is ≤ 10mg/m ³, which meets environmental standards.
2、 Digestive reaction parameters
The digester adopts a double helix structure with an effective volume of 8-12m ³, and the reaction temperature is controlled at 80-100 ℃. The steam heating and stirring rate are adjusted in coordination, and the stirring speed is set to 15-20r/min to ensure sufficient reaction between quicklime and water. The water cement ratio is precisely controlled at 0.6-0.8:1, and the reaction time is maintained for 30-45 minutes. The initial purity of the generated calcium hydroxide can reach over 92%. The digestive system is equipped with a tail gas treatment device, which reduces the exhaust gas temperature to below 40 ℃ and controls the humidity at 60% -70% to avoid pipeline condensation and blockage.
3、 Refined processing parameters
The initial product is transported to the Raymond mill by a bucket elevator, with a main power of 37-55kW. The grinding fineness can be adjusted by the speed of the analyzer, and the finished particle size can be switched between 80-325 mesh as needed, with a particle size qualification rate of ≥ 98%. The grading system adopts a combination of cyclone separator and pulse dust collector, with a dust removal efficiency of ≥ 99.9%. The collected finished products are sent to the finished product warehouse through a closed screw conveyor, and the conveying capacity matches the grinding capacity, reaching 2-4t/h.
4、 Energy consumption and environmental parameters
The energy consumption per unit product of the entire production line is ≤ 80kWh/t, which is 15% -20% lower than traditional production lines; Water consumption should be controlled at 0.8-1.2t/t, and the water recycling utilization rate should be ≥ 85%. In terms of environmental protection, dust collection devices are installed at each dust point on the production line. The factory boundary noise is ≤ 65dB (A), and the amount of solid waste (mainly impurities screening residue) generated is ≤ 0.05t/t. It can be sold externally for building materials and auxiliary materials to achieve solid waste resource utilization.
5、 Automation control parameters
Equipped with a PLC control system, it can monitor 12 key parameters such as raw material feeding amount, digestion temperature, and grinding fineness in real time, with a control accuracy of ± 2%. The system supports remote operation and fault alarm, with a device operation rate of ≥ 95%. The production line can achieve continuous operation with 2-3 operators, greatly reducing labor costs.
The improved calcium hydroxide production line, through precise design of the above parameters, not only meets the differentiated requirements of different industries for calcium hydroxide purity and particle size, but also achieves the production goals of high efficiency, energy conservation, and environmental protection, providing technical support for enterprises to enhance their market competitiveness.
