Precautions for constructing a 100 ton daily lime kiln shaft kiln
1、 Site selection aspect
（1） Close to the origin of raw materials
The daily production of 100 tons of lime kiln shaft kiln requires a stable supply of limestone. Try to choose a location close to the limestone mine as much as possible, which can reduce transportation costs and losses during transportation. For example, the transportation cost per kilometer may range from a few yuan to over ten yuan. Being close to the raw material production area can save a lot of transportation costs while also ensuring timely supply of raw materials.
（2） Transportation convenience
Ensure good transportation conditions around the factory site, including roads, railways, etc. Facilitating the transportation of raw materials and finished lime. Good transportation conditions are conducive to reducing logistics costs and improving production efficiency.
（3） Surrounding environment
Avoid choosing near sensitive areas such as residential areas, schools, hospitals, etc. Because the production process of lime kilns may generate certain levels of noise, dust, and other pollution, it is necessary to maintain a reasonable distance from these areas to reduce the impact on the lives of surrounding residents.
2、 Equipment selection and installation
（1） Kiln equipment
Choose kiln body materials with reliable quality, high temperature resistance, and wear resistance. The structural design of the kiln body should be reasonable, ensuring good ventilation and even heat distribution. For example, using high-quality refractory bricks to build the kiln body can improve the service life of the kiln.
The size of the kiln body should be designed according to the production scale of 100 tons per day, as being too large or too small can affect production efficiency and product quality.
（2） Supporting equipment
Ventilation equipment: including blowers and induced draft fans, etc. Select ventilation equipment with appropriate air volume and pressure according to the volume of the kiln body and production process requirements. Ensure that there is sufficient oxygen supply in the kiln to allow the fuel to burn fully. Material conveying equipment: such as belt conveyors, elevators, etc. The conveying capacity of these devices should match the production capacity of the lime kiln to ensure stable and continuous supply of materials such as limestone and fuel into the kiln.
（3） Equipment installation
During the installation process, it is necessary to strictly follow the equipment installation instructions to ensure the accurate and secure installation position of the equipment. For example, the verticality and levelness of the kiln body must meet the requirements, otherwise it will affect the normal operation of the kiln.
After the installation of the equipment is completed, comprehensive debugging and trial operation should be carried out to check the coordination and operational stability between each device.
3、 Key points of process design
（1） Raw material preparation
Strictly screen and crush limestone to ensure its particle size meets the requirements of shaft kiln calcination. Generally speaking, a particle size between 40-80mm is more suitable to ensure uniform calcination of limestone in the kiln.
Control the impurity content of limestone, as excessive impurities such as magnesium oxide and silicon dioxide can affect the quality of lime.
（2） Calcination process
Reasonably control the calcination temperature. The general calcination temperature is around 900-1200 ℃, and the calcination temperature may vary slightly depending on the quality of limestone and product requirements. Control the calcination temperature by adjusting the fuel supply and ventilation. Control the calcination time. The usual calcination time is around 8-12 hours to ensure that limestone can be fully decomposed into lime.
（3） Cooling process
The calcined lime needs to be cooled using a reasonable cooling method, such as natural cooling or forced cooling. Ensure that the lime is cooled to the appropriate temperature before proceeding with the kiln operation to avoid damage to subsequent equipment and personnel caused by high-temperature lime. 4、 Environmental protection and safety measures
（1） Dust control
Effective dust collection devices, such as bag filters, should be installed at the inlet, outlet, and material conveying process of the lime kiln. The dust removal efficiency of bag filters can reach over 99%, effectively reducing dust emissions.
Regularly maintain and clean the dust collection device to ensure its normal operation.
（2） Waste gas treatment
Treat the exhaust gas generated by lime kilns to remove pollutants such as sulfur dioxide and nitrogen oxides. Environmental protection processes such as desulfurization and denitrification can be adopted. Install exhaust gas monitoring equipment to monitor exhaust gas emissions in real-time, ensuring that exhaust gas emissions comply with relevant national standards.
（3） Security guarantee
Establish a comprehensive safety management system and provide safety training to employees. Including knowledge of equipment operation safety, fire and explosion prevention, etc.
Set up safety protection facilities around the kiln body, such as guardrails. At the same time, necessary fire-fighting equipment such as fire extinguishers, fire hydrants, etc. should be equipped. 5、 Personnel Management and Training
（1） Personnel configuration
Reasonably allocate production personnel, technical personnel, and management personnel according to the production process of the lime kiln. For example, production personnel are responsible for equipment operation and material management, technical personnel are responsible for process control and equipment maintenance, and management personnel are responsible for production planning and personnel coordination.
（2） Training work
Provide onboarding training for new employees, including basic principles of lime kiln production, equipment operation procedures, safety precautions, and other related topics.
Regularly organize skill training and safety drills for employees to improve their professional skills and emergency response capabilities.
The construction of a 100 ton daily lime kiln shaft kiln requires comprehensive consideration of factors such as site selection, equipment, process, environmental protection, safety, and personnel. Only by making sufficient preparations and strict management at every stage can we ensure the smooth construction and efficient operation of the lime kiln, produce high-quality lime products, and maximize economic and social benefits.
