Different Types of Briquette Binder for Coal Briquette!

The dust can be easily converted into a briquette by using a coal briquetting machine or biomass briquette machine. The binder is one thing in this briquetting process, which makes things simple. In the briquette-making procedure, the coke briquette and coal briquette binders have a dual function. For saving coking coal, and improving the further value of pulverized coal, reasonably selecting the binder is of good significance. Let’s read further about the different briquette binders:

Inorganic Binder

Usually used inorganic binders contain a variety of inorganic salts such as bentonite, kaolin, clay, and argil. The inorganic binder has a low price, a wide source, and definite thickness. The coal briquette made with an inorganic binder has good thermal stability. High strength high-temperature resistance, and low sulfur content but, the high energy value is decreasing because of the high ash content.

However, most inorganic binders are willingly soluble in water, making the coal briquette badly water-resistant. For coal briquetting, lime and clay are the initial used inorganic binders. In the inorganic binder, the alkaline earth metal, alkali metal, and other parts can react with sulfur.

Organic Binder

Coal tar and tar slag are two organic binders that have good bonding properties, which can significantly enhance the cold thermal strength and mechanical strength of coal briquette. But these binders are effortlessly decomposing at high temperatures, consequently in the disappearance of the bonding effect.

Coal Tar and Tar Residue

Coal Tar:

One of the main by-products of coke production is coal tar. It is dark viscous and, brown, low in ash, and heavier than water. It is a mixture of a range of organic substances.

Coal tar is a superior hot-melt type binder. It divides into low-temperature coal tar, medium-temperature, and high temperature according to the different final temperatures of coal pyrolysis.

Its bonding performance is the best because of the high content of asphaltenes in high-temperature coal tar.

The coal biomass briquette machine finished with coal tar has an extensive hardening time, from which the carbonized coke briquette has a short strength. To remove light fractions having a low boiling point, distillation is usually use the heavy fraction having a higher boiling point is concentrate to get a comparable asphalt property.

Moreover, the bonding property is extraordinarily enhanced, and thus it can be used alone as a coal briquette binder.

Tar Residue:

The coal tar mix with coke powder, pulverize coal, resinous polymer, and many more are known as tar residues. It is an industrial harmful waste remains, which are unsafe solid wastes that directly pollute the full of atmosphere and pollute groundwater sources as well.

The tar remains have high organic fixed carbon content and high calorific value. that can use as the binder for the coking coal, which is the best way to solve the use of waste slag resources and can save limited coking coal resources. Apart from this, tar residue has major economic and social advantages.

Asphalt

Asphalts largely comprise coal petroleum pitch and tar pitch. Coal tar pitch includes heterocyclic and aromatic compounds. It has a strong similarity with coal, together they can make polar covalent bonds.

Numerous coal coking factories pulverized and, coal briquette utilizes coal tar pitch as a binder. Asphalt binders have high mechanical strength and good water resistance. The formed coal briquettes are easy to transport, store, and use.

Industrial Waste

The industrial waste used as a coal and coke briquette binder can understand the resource utilization of waste, save coking coal resources, augment coke production, and resolve the environmental pollution problem reasoned by conventional waste treatment approaches. In the production of coal briquette, industrial wastes are normally used.

Biomass

Biomass resources are low in price, renewable, high in calorific value, have no secondary pollution, and don’t boost the ash of coal briquette. Cellulose, lignin, and hemicelluloses are dishonor to dissimilar extents, leaving solid-phase fiber parts.

That linked, net coal particles, making chemical bonds made between the coal particles after physicochemical modification. The attained liquid sugars, tannins, and the like also have a binding action. Adding a little biomass to the coal briquette enhances the compressive strength and mechanical strength of the coal briquette.

At the End

After reading the above-written points, you must have known which briquette binders are available in the market for coal briquette. Apart from this, if you want to read about a biomass briquette machine or its process, stay connected with us.