Methods to improve the quality of quicklime briquetting

Quicklime

In the past, a large amount of lime powder was discarded, causing resource waste and environmental pollution. Quicklime briquetting can reuse these powders.In the chemical industry, it can be used as a raw material or catalyst carrier for certain chemical reactions;

In the field of environmental protection, it has great application potential in sewage treatment, flue gas desulfurization, etc. With the development of these industries, the demand for quicklime briquetting products will continue to increase, and more and more companies will join the quicklime briquetting industry.

However, in the actual production process of quicklime briquetting, briquetting failures are often encountered. There are many complex factors behind this phenomenon.

• The pressure output of the briquetting machine is unstable, sometimes high and sometimes low, which makes it difficult to succeed in briquetting.
• Severe wear of the rollers and deformation of the surface ball sockets will also make it difficult to form the pellets.
• The uneven distribution of the particle size of quicklime and the imbalance of the ratio of coarse and fine particles will cause uneven texture inside the pellets and make it difficult to form a stable structure;
• Improper control of the humidity of the raw materials, too high humidity, the quicklime is muddy and difficult to form, too low humidity, lack of sufficient bonding between particles, and the pellets are easy to loosen and break.
• Improper selection of binder or inaccurate addition of binder leads to failure of quicklime briquetting.

How to improve the quality of quicklime briquetting?

Here are some suggestions from EP Machinery, a professional manufacturer and solution service provider of quicklime briquetting machine in China:

Select high-quality raw materials

The main raw material for quicklime production is limestone, and its quality directly determines the quality of the final quicklime. Selecting limestone with high calcium content and low impurity content can improve the quality and activity of quicklime generated after calcination, reduce side reactions, and improve purity.

Optimize pretreatment process:

Breaking large pieces of limestone into small pieces can increase its surface area, facilitate heat transfer and chemical reactions during calcination, and improve calcination efficiency.

Generally speaking, the particle size of crushed limestone should be controlled below 20mm.

Further remove impurities and unqualified limestone particles through screening, wash and remove pollutants such as soil and oil on the surface of limestone, and improve its chemical properties.

Breaking large pieces of limestone into small pieces

Reasonable selection of equipment

An advanced and reliable quicklime briquette machine is the hardware foundation for ensuring the quality of briquette.

The briquette mold design of the equipment should be precise, and the extrusion system with high-precision hydraulic device can achieve efficient briquetting;

The automatic feeding molding system can ensure the quality of spherical molding.

In addition, the stability of the equipment is also crucial. Only stable operation can continuously produce high-quality pellets.

Optimize process parameters(get more about Optimizing the process parameters of quicklime briquetting)

Process parameters such as pressure, temperature, and feeding speed have a significant impact on the quality of pellets.

Appropriate pressure can make the pellet strength meet the standard, avoid insufficient pressure leading to low strength, or excessive pressure damaging the internal structure of the pellet.

Strengthen quality inspection

Establish a complete quality inspection system to monitor key indicators such as pellet strength and density uniformity in real time during the production process.

By sampling and testing the strength of the pellets, problems can be found in time and process parameters can be adjusted to ensure that the quality of each batch of quicklime briquette meets the standard.

Sampling to test the strength of quicklime pellets