Coal briquetting technology

Investigating alternate heating techniques becomes essential as we work to make our homes more ecologically and energy-efficient. Coal briquetting technology is one such technique that is gaining popularity. Because of environmental concerns, coal may not be the first resource that many choose, but new developments in briquetting technology provide a more sustainable and effective way to use this resource.

Coal fines are compressed during the coal briquetting process to create solid briquettes that can be burned for heat. By reducing emissions and waste, this process not only increases the efficiency of coal utilization but also lessens its impact on the environment. Furthermore, briquettes of coal have a higher energy density than loose coal, which makes them a more cost-effective option for home heating.

The adaptability of coal briquetting technology is one of its main benefits. Briquettes allow for more exact control over temperature and combustion because they can be customized to meet specific heating requirements. Because of their adaptability, coal briquettes can be used with a variety of heating systems, including both contemporary boilers and conventional stoves.

Furthermore, by making use of coal fines and other waste materials that would otherwise be thrown away, coal briquetting technology promotes sustainability. We lessen the need for virgin coal and the environmental damage caused by its extraction and transportation by turning these materials into functional briquettes.

We’ll examine the advantages, uses, and most recent technological developments of coal briquetting in greater detail in this piece. The technology of coal briquetting presents a viable option for sustainable home heating, regardless of your goals: lowering your carbon footprint or increasing the efficiency of your heating system.

About coal briquetting technology

Melting the boiler with wood and then adding the dusty fuel fraction on top of the burning logs is one method of burning coal fines. However, since the coal dust needs to be fed frequently and in small portions, this is too problematic.

When a lot of fuel is loaded, some of it will inevitably spill and waste away, leaving the remaining fuel to fill the spaces between the wood. The furnace will start to fade out when air stops entering the combustion zone.

The best method is to press a small fraction into briquettes, which burn extremely well and release a significant amount of heat. An effective solution known as coal briquetting was first proposed in Russia at the turn of the 20th century by inventor A.Ο. Veshnyakov’s briquetting process is still in use today, both in homes and in industry. Its main idea is that fuel with a calorific value equal to or higher than premium coals can be produced by compacting coal fines using high pressure and specialized equipment.

We note that such briquettes are produced in two types, without delving deeply into the intricacies of the technological process and the classification of different grades of fuel:

• with binders for industrial purposes;
• briquettes are intended for combustion in household boilers.

Note: You cannot use compressed briquettes with binders in your home. When these materials burn, they produce toxic or dangerous compounds that are collected in the industry using various techniques. Household fuel was once bound with the addition of starch or molasses, but this technology is no longer in use.

It is worthwhile to take this particular technology into consideration because we are interested in the process of producing coal briquettes for domestic use without the need for any additives. Thus, the following is the process’s order:

• First, the coal is pulverized to a maximum size of 6 mm;
• next operation – drying to achieve an optimum moisture content of 15%. For this purpose, special equipment is used for the production of coal briquettes – steam or gas dryers;
• After drying, the composition is cooled and fed for pressing. The operation takes place at a pressure of 100-150 MPa in a so-called stamp press;
• final cooling and shipment to the warehouse.

Note: The following describes the traditional technological process; however, depending on the equipment being used, there may be differences in the requirements for the size fraction and moisture content of raw materials. For instance, the Russian company UNITEC’s contemporary mini-mill requires particle sizes of up to 0.0.25 mm and a moisture content of 6–16%. In other words, even though the coal briquetting technology in this instance should allow for better grinding, much less pressing pressure is used.

The result is a coal briquette with an ash content of no more than 15-20%, a maximum mechanical load of 3 kg/cm2, and a maximum mass loss of 15% upon impact when the product falls from a height of up to 2 m. The grade of coal used to compress the briquette affects the combustion heat.

Production of charcoal briquettes at home

It is evident that the typical homeowner cannot afford the industrial equipment needed for coal briquetting because of its high cost. But even our grandfathers could churn out briquettes without a tool. In order to achieve this, a thick mass was created by combining coal dust and crumbs with water in a specific ratio. From there, tortillas were manually formed. These products were successfully burned in a household stove after drying. In other words, the mixture used to make coal briquettes is moistened rather than dried, which is against production technology.

Briquettes can be made in two ways at home:

• using a manual press;
• on a homemade screw extruder.

The first approach is advantageous since the press machine can be made or purchased for a reasonable price. Its drawback is low productivity; you will need to put in a lot of effort to produce fuel briquettes for the entire season. In the second scenario, coal dust is briquetted quickly due to automation of the entire process. However, this is where the unit’s cost becomes important; even a do-it-yourself installation will cost money. Purchases of a strong electric motor, gearbox, and other components will be required.

The following is the algorithm that determines how coal briquettes are made by hand:

• It is necessary to try to pulverize coal crumbs in any available way. The smaller the fraction will be, the more qualitative the product will turn out;
• mix the resulting mixture with water. It is not possible to specify exact proportions, as they depend on the dust content. The main thing is that the mixture should be very thick and molded by hand. It is not necessary to add clay, it will only increase ash content;
• fill the mold with the mixture and activate the manual mechanism;
• Remove the briquetted charcoal from the mold and leave it to air-dry.

Consequently, we obtain breakable goods that are not ideal for shipping but do not burn excessively in the stove. This video will teach you how to briquet coal at home in one method:

The availability of a screw press greatly expedites and simplifies production. After turning on the electric motor, the aforementioned mixture is shoveled into the extruder’s receiving hopper. The result is a superior quality of cylindrical "sausages." It is important to note that these charcoal briquettes are transportable and have good durability.

Watch the video to find out more about the extruder’s operation:

For the heating and insulation of homes, coal briquetting technology presents a viable answer to problems related to the environment and finances. In comparison to traditional coal, this process produces a fuel source that burns cleaner and more efficiently by compressing coal dust into briquettes. Because of the reduced emissions produced by the resulting briquettes, air pollution is decreased and the carbon footprint associated with heating is minimized.

Furthermore, by making use of coal waste and byproducts, coal briquetting technology advances sustainable practices. Coal dust can be recycled into functional briquettes, which will lessen its negative effects on the environment and increase resource efficiency. By making the most of the available coal reserves, this not only aids in waste management but also conserves natural resources.

Adopting coal briquetting technology can help homeowners save money in terms of expenses. In comparison to raw coal, briquettes have a higher energy efficiency, which means that less fuel is required to produce the same amount of heating. Over time, this results in lower energy costs, which benefits households financially in the long run.

Coal briquetting technology is not only advantageous in practice, but it also supports the move toward greener energy sources. Although coal is still a major energy source in many areas, its negative effects on the environment have led to the hunt for greener, more sustainable energy sources. Briquetting technology provides a workable stopgap measure while communities strive toward a greater adoption of renewable energy sources by increasing the effectiveness and environmental performance of coal usage.

To sum up, the technology of coal briquetting offers a strong alternative for improving home insulation and heating. Its capacity to convert coal waste into cleaner-burning fuel benefits homeowners monetarily and lessens environmental damage. Communities can meet their heating needs and move toward more sustainable and efficient energy practices by adopting this technology.

We explore the inventive method of converting coal into briquettes for effective use in heating systems in the article "Coal Briquetting Technology" on our website, which is devoted to heating and insulating homes. By compressing coal dust and additional ingredients into solid blocks, coal briquetting produces coal that burns cleaner and longer than conventional coal. Numerous advantages of this technology include lower emissions, higher energy efficiency, and financial savings for homeowners. Through an in-depth examination of coal briquetting, readers can acquire knowledge about a sustainable heating option that complies with contemporary environmental regulations and improves home insulation and warmth.

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