The main characteristics and uses of fertile coal, the difference between gas fertilizer coal and fa

Fertile coal has good cohesiveness and medium and high volatile matter (about 25 -35), and can produce a large number of colloids when heated, forming a colloidal layer greater than 25mm, and the coking is the strongest. Using this coal to make coking, you can make coke with good meltability and wear resistance, but this kind of coke has many transverse cracks, and the coke root part often has bee coke, which is easy to break into small pieces. Due to its strong cohesiveness, it is the main ingredient in coal blending coking.

It is mainly used for coking (some high-ash and high-sulfur fertile coal is used to generate electricity). Compared with other coal grades, fertile coal generally has a higher sulfur content.

Fat coal volatiles are generally higher. The colloidal layer is thicker. Strong cohesiveness, a large amount of colloids are produced when heated, and the coke generated when coking alone has good meltability and high wear resistance, so it is coking coal.

The coke made with fertile coal has many transverse cracks, high porosity, and many bee coke at the root of the coke, which is fragile, so it is necessary to mix gas coal and lean coal to improve the quality of coke during coking. The cohesive force of fertile coal is very strong, and it can be matched with coal with weak cohesion to produce high-quality coal, which is called the mother of coking coal. Fertile coal is an important component in coking coal, and the combination of fertile coal can make the coke melt well, thereby improving the wear resistance of coke, and creating conditions for the addition of coal or leaning agent with poor cohesiveness.

Volatile matter VDAF = 20% 28%, maximum thickness of colloidal layer, y 25mm.

Gas-fertilized coal is a kind of strong cohesive fertilized coal with high volatile matter and colloidal layer, and some are called liquid fertilized coal. The coking performance is between fertile coal and gas coal.

The structure of fertile coal is: fertilizer (left and right structure) coal (left and right structure).

The structure of fertile coal is: fertilizer (left and right structure) coal (left and right structure). The pinyin is: féi méi. The phonetic pronunciation is:

What is the specific explanation of fertile coal, we will introduce it to you through the following aspects:

1. Explanation of terms [click here to view the details of the plan].

A type of bituminous coal.

2. Citations and Explanations.

A kind of bituminous coal, used for coking, good coking, the coke strength is high, but the wear resistance is poor, it is easy to expand when it is used alone for coking, damaging the furnace wall, so it is mixed with other bituminous coal.

3. Chinese dictionary.

A bituminous coal. For coking, the coking property is good, the coke strength is high, but the wear resistance is poor, it is easy to expand when it is used alone for coking, damaging the furnace wall, so it is mixed with other bituminous coal.

Fourth, the network explained.

Fertile coal is a kind of bituminous coal, with a high degree of coalification, and is a weakly cohesive coal with medium volatile matter and medium and high volatile matter, and its volatile content is about 25%-35%. Spike dust fertilizer coal is also a kind of coking coal, mostly used for coking, good coking, high coke strength, but poor wear resistance, it is easy to expand and damage the stove when it is used alone for coking, so it is mixed with other bituminous coal. The maximum thickness of the colloidal layer of fertile coal is y>25 mm.

Compared with other coal grades, fertile coal generally has a higher sulfur content.

Idioms about fertile coal.

Pick fat, pick thin, fat head, big face, Qin Yue, fat and barren, ancient fat, barren teeth, sweet fat, eat and drink fat, soap bubbles, swallows, thin rings, fat horses, good fighting, light Qiu.

Words about fertile coal.

Fat horses, light Qiu Yan, thin rings, fat fields, fertile lichens, light fat, Qin Yue, fat barren clothes, light multiplication, barren clothes, fat people, pick fat, pick thin, soap bubbles, spider silk, coal tails.

Sentence formation about fertile coal.

1. The effects of biomass dosage, fertile coal dosage, molding pressure, coal screening composition and carbonization heating rate on the compressive strength of coke were studied.

2. The interface bonding of coke obtained by the combination of Xigou fertile coal and Yicheng anthracite coal was studied from the aspects of batching ratio and bulk density.

3. Maintain the same coke quality, and appropriately reduce the dosage of high-quality coking coal and fertile coal after mixing medium temperature asphalt, and reduce the cost of coal.

4. The contribution of the properties of Wangfenggang coal to the thermal properties of coke was studied under the condition of conventional coking process and the relatively stable ratio of fertile coal and coking coal.

Fertile coal is a kind of bituminous coal, with a high degree of coalification, and is a strong cohesive coal with medium volatile matter and medium and high volatile matter, and its volatile content is about 25%-35%. Fertile coal is also a kind of coking coal, mostly used for coking, good coking, high coke strength, but poor wear resistance, it is easy to expand and damage the stove when it is used for coking alone, so it is mixed with other bituminous coal.

Lean coal has less volatiles, weak cohesiveness, and can coke alone, which is a coking coal. A considerable amount of colloids can be produced during the coking process, and the Y value is generally about 6-10mm. The coke produced by coking with a single type of coal has poor meltability, easy to crush, and has small wear resistance, but large lumpiness.

It is often used as a leaning agent for coal blending coking to reduce the cracks of coke and improve the wear resistance and lumpiness of coke. It is also used as a raw material for fuel and gasification.

Both strong and fertile coal are high-quality anthracite with high fixed carbon and low ash content, but they have some differences in biogenesis, chemical properties, and applications.

1.Biogenesis: Fertile coal is mainly formed from fern residues, while fertile coal is mainly formed from woody plant residues.

2.Chemical properties: The sulfur content in strong fertilizer coal is relatively high, and it is easy to produce acid mist pollution; The sulfur content in fertile coal is relatively low. In addition, under oxidizing conditions, strong fertilizer coal is more likely to naturally fire than ordinary anthracite.

3.Application: Due to its high fixed carbon and low ash content, both of them are widely used in metallurgy, chemical and other industries as reducing agents or dry distillation raw materials in high-temperature processing.

However, in the field of iron and steel metallurgy, strong fertilizer coal is often used as a substitute for coke powder; In other fields, such as electric power and civil heating, mixed anthracite-free charcoal based on fertilizer is mostly used.

In short, in practical application, it is necessary to choose the appropriate product type according to different needs, and pay attention to environmental protection issues.

Fertile coal: bituminous coal with a moderate degree of metamorphism. When coking alone, it can produce coke with good meltability, but there are more transverse cracks, and there is bee coke in the coke root.

Coking coal: Bituminous coal with a high degree of metamorphism. When coking alone, the colloidal body produced has good thermal stability, and the obtained coke has large lumpiness, few cracks and high strength.

Lean coal: a high degree of deterioration with potatoes to make celery bituminous coal. When the individual cultivator cokes, most of them can coke. The lumpiness of coke is large. There are few cracks, but the melting is poor, and the wear strength is low.

Gas coal: bituminous coal with a low degree of metamorphism and high volatile matter. When coking alone, the coke is more elongated, brittle, and has more longitudinal cracks.

1 3 Coking coal: between coking coal, fertile coal, and gas coal, with medium or high volatile content of strong cohesive coal. When coking alone, it can produce coke with high strength.