Why Rice Husk Ash is All-Important in our Industries

globalrecycling Sep 27 2017

Rice is consumed by a large population from around the globe. Many in India consider rice as vital to their diet. However, the process by which rice is obtained, leaves behind a large quantity of the rice ‘husk’. The husk gets separated from the rice during the threshing and polishing part of the rice production process and was usually disposed of earlier as waste. Disposing rice husk was a problematic process for farmers because of the risks it poses for our environment. As a result, before discovering its industrial uses, rice husk was disposed of by the tones earlier before.

It was only when the husk was burnt and analyzed by engineers and scientists that they realized that rice husk ash could have real-time applications and usages. Rice husk soon lost its tag of being a waste product to a highly useful and necessary source in the industry. People burn rice husk in various processes like as fuel for boilers, generating power for machineries, etc. The rice ash that gets left behind is what you see being used for industrial purposes. Ever since the industries have recognized the properties of rice hull ash, they have started using it as alternatives for its chemical and industrial applications. You can easily use this husk ash for any of the usual reasons one uses it for.

How is Rice Husk Ash Used and what all can be achieved by using it?

a.   If you want, you can change or regulate the purpose and quality of the rice ash that you are using for any construction purpose or more. This means, that you will be able to make it into an insulator that is good for sealing in the heat and doesn’t let it escape. Furthermore, you can change its quality to use it in any structure that needs to be fire or water resistant. It can even be used to absorb any liquids like oil or water too. 

b.   Rice husk ash can be used as a strong binder in cement, instead of the usual substance used. This means that you can get a reliable and cheap alternative to make your cement constructions efficient and on par with your product quality. Since it becomes active when mixed with the cement paste, you will save a lot of money, effort and time if you had been using any other artificial material. 

c.  This rice hull ash is generally reactive in nature, while possessing a pozzolanic property. Being a reactive agent, you can easily use it in any important construction work of yours. Instead of importing silica or depending on artificial substances, you have the choice to use this instead. Rice hull ash will give you concrete that is of the same quality; durable and strong. It is used by many in their construction of bridges, factories, plants, etc.  

d.   Rice ash naturally, has a high content of amorphous silica. Around 90 percent of its make, you can use it for an alternative to market bought and imported silica. You’d no longer need to buy micro silica or silica fume at higher costs, once you start using this cheaper yet effective alternative.

It is these qualities and uses that make rice husk ash, a byproduct that is certainly not a waste product, but highly useful and relevant in our industry.