A new non-drying, quick-drying, clean coal technology has recently been developed and launched by Shaanxi Xi'an Shenli Environmental Protection Technology Co., Ltd. This company is a leading enterprise in China's shaped coal pellet technology. Over the years, relying on its long-term technical accumulation, the company has continuously researched and innovated in the field of shaped coal pellet technology, developing a series of new technologies for shaped coal, pellets, barbecue charcoal, and activated carbon. The new non-drying, quick-drying, clean coal technology is another major scientific research achievement of the company in the binder field. Due to its remarkable performance compared to traditional non-drying technology, it has received high praise from numerous users and industry experts.
The so-called non-drying coal technology refers to the technology of drying or sun-drying shaped coal without the need for drying. Traditional techniques use cement as a binder, or a binder similar to magnesium oxide. Since cement itself cannot be dried, drying it would result in a loss of strength, hence the name "non-drying shaped coal technology." Traditional non-drying technologies have many drawbacks, being both unreasonable and unscientific in the application of shaped coal.
One of the issues is that using cement as a binder significantly increases the ash content in shaped coal, thereby reducing the fixed carbon content and calorific value of the shaped coal.
The combustion power and thermal efficiency of shaped coal have significantly decreased.
Secondly, using cement as the binder results in a very low balling rate and low initial strength, leading to a significantly increased rate of defective products, which affects product quality and production efficiency.
The third challenge is that shaped coal must be dried or air-dried, sometimes requiring repeated watering and maintenance to solidify, making it difficult to achieve efficient large-scale production.
Fourthly, it has poor heat resistance, causing it to crack or powder upon exposure to high temperatures. It is merely passable for civilian use but is utterly unsuitable for industrial kilns, boilers, and the like.
The new non-drying, quick-drying, and clean coal technology completely overcomes all the shortcomings of traditional methods. It boasts numerous advantages in transportation, storage, and use, catering to both small enterprises for non-drying use and large enterprises for drying and solidification. Compared to other coal binder types, whether air-dried or dried and solidified, the drying time can be reduced by 20% to 30%. It is a type of quick-drying coal binder that stands out compared to traditional technology.
High intensity of cold and heat:The coal briquettes produced by this adhesive have excellent performance indicators, boasting not only good thermal stability and strength when heated, but also excellent cold-state strength, with a cold strength exceeding 80-90 kg per ball. They are perfectly suited for transportation and handling without breaking.
Low ash content increase.The various types of coal briquettes, coke briquettes, and spheroidal nodules produced from this binder essentially maintain and approximate the characteristics of the raw coal powder used, with low ash content increase rates, significantly lower than the traditional non-drying coal briquettes' ash content increase of 5-8%.
Excellent Waterproof PerformanceThe manufactured briquettes have excellent water resistance and do not absorb moisture, ensuring they can be stored outdoors without degradation from dampness or snow and rain. The briquettes remain intact and do not disintegrate after being submerged in water for 3 to 30 days. After being soaked in water for 24 hours, their re-dry strength is almost equivalent to that of the non-soaked briquettes.
Four: Strong bonding capability.This adhesive is a composite bonding agent, featuring a simple preparation process, good fluidity, and excellent wetting of coal particle surfaces, with strong bonding power. The sphericity rate is around 95-98%, with the initial strength of the raw balls reaching 10-30 kg per ball, which is more than double that of traditional non-drying coal.
Five: Versatile in featuresThe adhesive offers functions such as sulfur fixation, smoke reduction, and combustion enhancement. The sulfur fixation rate exceeds 90%, smoke reduction is around 50-80%, and under normal circumstances, the Lingemann blackness can be reduced to about 1. The coal briquettes produced achieve a combustion rate of over 98%, significantly reducing the residue of coal.
According to the company's technical staff, this adhesive is suitable for a wide range of coal types. It can meet the application requirements of users by adjusting the amount of adhesive added. Not only can it bond anthracite, coking coal powder, coal slime, anthracite powder, various bituminous coals, but it can also be used with manganese ore powder, chrome ore powder, lead ore powder, iron ore powder, nickel ore powder, and graphite.
