What equipment is needed to build a lime plant with a daily output of 200 tons
Building a lime plant with a daily output of 200 tons is a complex project that requires comprehensive consideration of multiple aspects such as raw material processing, calcination, cooling and grinding, storage and transportation.
1、 Raw material processing equipment
1. Crushing equipment
The main raw material of the lime plant is limestone, whose chemical composition, mechanical strength, physical properties, etc. must meet production requirements, and the calcium content should not be less than 50%. The first step in raw material processing is crushing, and commonly used crushing equipment includes jaw crushers, impact crushers, and hammer crushers. According to the particle size and hardness of the raw materials, a suitable crusher can be selected. For example, jaw crushers are suitable for coarse crushing, while impact crushers and hammer crushers are suitable for medium and fine crushing. These devices can effectively crush large pieces of limestone into particle sizes suitable for calcination.
2. Screening equipment
The crushed limestone needs to be screened to remove particles that do not meet the requirements. Screening equipment such as vibrating screens and drum screens can ensure uniform particle size of raw materials and improve calcination efficiency.
2、 Calcination equipment 1. Rotary kiln
Rotary kiln is the core equipment in lime production, with advantages such as large production capacity and uniform calcination temperature. For lime plants with a daily output of 200 tons, larger scale rotary kilns are usually chosen. The diameter and length of the rotary kiln will be adjusted according to specific production capacity. Taking a rotary kiln with a diameter of 3 meters and a length of 12 meters as an example, its cost is approximately 1.5 million yuan. The high-temperature environment inside the rotary kiln decomposes limestone into calcium oxide and carbon dioxide, completing the calcination process.
2. Combustion system
The combustion system includes equipment such as burners, blowers, and induced draft fans to provide necessary heat for the rotary kiln. The burner is the core of the combustion system, and its price is influenced by factors such as brand and model, usually around hundreds of thousands of yuan. The blower and induced draft fan are responsible for providing sufficient air for the combustion process and discharging exhaust gases.
3、 Cooling and grinding equipment
1. Cooling equipment
The calcined lime needs to be quickly cooled to prevent it from recombining. There are two commonly used cooling methods: blast cooling and chamber cooling. The blower cooler has good cooling effect and small footprint, but the investment cost is high; The chamber cooler has the advantages of simple operation and convenient maintenance. The specific choice of cooling method depends on the actual situation.
2. Grinding equipment
The cooled lime blocks need to be ground into fine powder for subsequent use. The commonly used grinding equipment includes ball mills and Raymond mills. Ball mills have advantages such as strong crushing ability and good product fineness, but they have high energy consumption; Raymond mill has the advantages of simple structure and easy maintenance, making it suitable for small and medium-sized lime plants. Enterprises should choose appropriate grinding equipment based on their actual situation.
4、 Storage and transportation equipment
1. Storage equipment
Lime products need to be stored properly to prevent moisture and deterioration. There are two main forms of storage equipment: indoor warehouses and outdoor storage yards. Indoor warehouses have advantages such as rain and fire protection, but their construction costs are relatively high; Outdoor storage yards have advantages such as low land costs, but environmental and safety issues need to be considered. Enterprises can choose appropriate storage methods based on their actual situation.
2. Transportation equipment
There are various transportation methods for lime products, including road transportation, railway transportation, and waterway transportation. Transportation equipment mainly includes trucks, trains, and ships. When selecting transportation equipment, factors such as the nature of the product, transportation distance, and cost need to be considered.
5、 Auxiliary equipment
1. Dust removal equipment
A large amount of dust is generated during the lime production process, and dust removal equipment needs to be installed to protect the environment. Common dust removal equipment includes cyclone dust collectors, bag dust collectors, etc. The selection of dust removal equipment should be based on production processes and environmental requirements.
2. Automation control system
In order to improve production efficiency and safety, lime plants usually need to install automated control systems. This system can monitor and control process parameters such as temperature, pressure, and flow in real time, reducing the difficulty of manual operation. The selection of automation control systems should be based on production needs and budget.
