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How To Get Rice Husk Charcoal

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Rice husk charcoal is made when rice husk, the hard outer layer of the rice seed, is heated but not burned completely. This happens when the temperature is below the point where it would normally catch fire. Rice husk is a common waste product from milling rice, so there’s a lot of it and it doesn’t cost much. Because of this, making rice husk charcoal is a great business idea that doesn’t cost a lot and can give you a lot in return.

There are two main methods to turn rice husk into charcoal. The first is to directly carbonize the rice husk in a special furnace until it becomes charcoal, and then press it into briquettes. The second method is to first compress the rice husk into briquettes using a special machine, and then carbonize these briquettes to turn them into charcoal. In the following, we’ll explain each of these processes in detail.

First molding >>> carbonizing

Rice husk, rich in cellulose and lignin, can be easily pressed into briquettes using a rice husk briquette machine. Since the husk is already small, there’s no need to crush it first. So, the process of making charcoal from rice husks is similar to that of sawdust.

After making the briquettes, the next step is carbonization. This is when the briquettes undergo high-temperature pyrolysis in the absence of air, turning them into charcoal. There are two main methods for carbonization: using a traditional charcoal kiln or a modern carbonization furnace. Compared to the traditional kiln, the furnace reduces flue gas emissions and allows for the recycling of wood vinegar and wood tar (though these by-products are produced in small quantities).

First carbonizing >>> molding

Here, we’ll focus on the machine-based approach for producing rice husk charcoal.

Compared to the traditional method, carbonization machines offer several advantages. They require less manual labor, have shorter carbonization times, produce less smoke, and result in higher charcoal yields.

We offer a range of carbonization furnaces suitable for rice husk carbonization. For small or medium-scale production, vertical and horizontal-type furnaces are recommended. For larger-scale operations, the continuous carbonization machine (rotary carbonizer) is a great choice.

After the rice husk is carbonized into charcoal, the next step is to use a charcoal briquette machine to shape the charcoal into briquettes. There are four common types of molding machines that can be selected as needed.

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