Farmers make their own honeycomb briquettes. Why do they put yellow mud in the coal?

Honeycomb coal is not used by many people now. In the past, whether in rural areas or cities, honeycomb coal was indispensable in winter. Honeycomb coal was really practical in the last few years from the end of last century to the beginning of this century.

Why should yellow mud be added to honeycomb coal? When I was a child, I would go to the village to play briquettes with my mother every winter and order briquettes for the winter. At that time, the price of briquettes was very cheap. I remember that the price of a kilo of coal is about 6 cents, and the price of a briquette is about 1 cent. At that time, I went to book a room with my mother. The boss who sells briquettes always looks gloomy and always enthusiastically tells my mother that it can't be cheaper. I have just studied a tool that can play coal balls. It looks like a bicycle pump.

At that time, my mother bought two or three hundred briquettes a winter. Coal balls are used for heating in winter, and cooking is still done in a pot in the yard. At that time, the briquettes always went out in the middle of the night without knowing what was going on. My mother always asks me to take my new briquette and exchange it with my neighbor for a burning briquette, so I don't have to rekindle it.

Later, the price of briquettes has been rising, the briquette pressing machine has been constantly updated, and the briquette furnace has been constantly improved. Later, the price of briquettes rose to 60 cents, and the machine for beating briquettes became electric. With the conveyor belt, the briquette stove became a water tank coal fire, and sweet potatoes could be baked, but now few people use briquettes.

Back to the production of briquettes, briquettes not only use coal in the production process, but also use very important yellow mud, and yellow mud is not added at will, but has certain standards. Adding yellow mud is not a waste of raw materials, but has its important role. We know that coal itself is loose and not sticky. Even if we add a certain amount of water to coal, it is still difficult for coal to form. At this time, the yellow mud has a space for it to play its role. Yellow mud becomes sticky when it meets water. If yellow mud is mixed into coal in a certain proportion, it will make the briquettes more sticky, so it is easier to form. In this way, when the coal is gathered together, the air can still circulate and the coal can burn more violently. Moreover, the briquettes can keep a good shape after burning, so they can be easily taken out of the coal stove.

Moreover, adding yellow mud to coal plays a very important role in increasing the adhesion between coal molecules, prolonging the combustion time of coal and making the heat release more uniform. Improve the heat utilization rate and make the briquette burn fully.

Of course, there is a certain proportion of yellow mud, neither too much nor too little. Too much is easy to cause the briquettes to burn badly and the heat can't reach. Too little yellow mud will lead to cracking of briquettes and fast combustion time.