Raw Paddy Drying Solutions by Nextech

By “drying” is meant the phase of the post-harvest system during which the product is rapidly dehydrated to a so-called “backup” moisture. This desiccation is intended to sufficiently reduce the moisture content of the grain to ensure favorable conditions for storage or subsequent processing of the product.

It is possible to obtain the drying of the products by circulating more or less hot air in a mass of grains. In its movement, the air gives heat to the grains, absorbing moisture from the most superficial layers.

The water present in the surface layers of the grains evaporates much more efficiently and more rapidly than that of the inner layers.

It is therefore much more difficult to lower the water content of a product from 25% to 15% than from 35% to 25%. It would be wrong to think that this difficulty can be overcome by carrying out a rapid drying at a high temperature. Indeed, such drying conditions generate internal tensions, producing small cracks that can lead to breakage of grains during subsequent treatments.

For the drying of grains, the methods employed are, in essence, two in number:
– Natural drying
– Artificial drying

Both have advantages and disadvantages, and there is no ideal way to meet all needs.

Natural Drying

The method of natural paddy dryer, to which the techniques illustrated in the section on pre-drying operations also relate, consists essentially in exposing the beaten products to the air (in the sun or the shade). To obtain the desired moisture content, the grains are spread in thin layers over a drying area, where they are exposed to air (in the sun or the shade) for a maximum of 10-15 days. To promote uniform drying, the seeds should frequently be stirred, especially if they are exposed to direct sunlight. In addition, for the drying to be sufficient, the relative humidity of the ambient air must not exceed 70%.

Artificial Drying

The introduction of high-yielding crop varieties and the gradual mechanization of agriculture now make it possible to harvest large quantities of grain in a short period. In the tropical and subtropical humid zones, given the unfavorable weather conditions at the time of harvest, it is often difficult to safeguard the quality of the products.

To meet the need to increase agricultural production, it is, therefore, necessary to dry the products in a relatively short time, and whatever the ambient conditions. Thus, paddy dryer plant must be used. This method consists essentially in subjecting the grains to a forced ventilation of more or less heated air. It requires the use of individual devices called “dryers.”

Artificial Raw Paddy Dryer

From the point of view of construction, the essential elements of a rice dryer machine are:

– the dryer body, which contains the grains to be dried;
– The hot air generator, which allows heating the air drying;
– The fan, which allows the circulation of drying air in the grain mass.

For the artificial drying of the grains, two types of dryers are used:

– Static or batch dryers;
– Continuous dryers.

The former is inexpensive and only treat small quantities of grain; they are therefore more suited to the needs of small and medium-sized collection and processing centers.

As for the latter, they are high flow paddy drying technology that requires more complex infrastructure, additional equipment and especially a particular planning and organization. They are therefore more suitable for large centers, silos or shops, where very large quantities of product are processed. Nextech Agri Solutions is a reliable brand if you want to purchase agricultural solutions.

Why Rice Mill Plant need a Consultant?

While ignoring the barriers of the income as well as the living standards of the people living in the state, country or city, rice is one of the grains that are affordable by the large population in any country. Besides, rice is stable food in most of the Asian countries. This is clear by now that a huge amount of quantity of this food item is traded to other countries, where the production is low.

Now the question arises that with the right rice milling machine, we can easily produce a picture where the high output, productivity and market efficiency of the mills are required. This credit for mass production definitely goes to the rice mill consultants. These professionals are hired in large number by various mill merchants who aim for better output and working.

With the presence of milling consultants, the production and quality of the crops levels get higher. Their presence makes a big difference in the working procedures and environment. Here is how the rice mill plant consultants are a necessity these days:

Being a rice industry specialist, they help the customers with the right choice of business. This implies that irrespective of customer needs to begin the cultivation business, discount, dealership, and retail rice offering business.

Obviously, the beginning of rice plant is productive and various organization take attainable study and stage as the initial step in order to guarantee the benefits to the business. Rice mill consultants facilitate the clients with the fundamental components. For instance, prerequisite arrival, outlining and development, assets and other factors that influence the day to day working of rice machine and mills.

The need of perfect land piece and its determination is fundamental as most of the plant proprietors require highly stable capacity zone for this purpose that by now, has been processed and will be processed without much ado. Expert rice consultants have a vision to this, they make deals and perform various troublesome exercise and choose right rice processing machine. They are held responsible to consider the land zone where the production will take place.

Furthermore, the design and development are vital to accomplishing the gigantic benefits from the rice processing business. Factories and mills, under their guidance, out to produce in such a way that they permit smooth and fulfilling operations along within the arranged space. Stores and Godowns are outlined and create so as to store crude paddies and arranging the rice securely.

The consultants also take care of cleaning units, parboiling domains and various fragments reserved suitably.

Keeping up with the high rice milling equipment alongside the desired amount of production is an errand for the proprietors. These two variables add advantage to the era ability of the business. The rice mill consultants set their attention in the right direction while fitting into the interests in the rice processing hardware. They generally prescribe another rice milling process machine. In the present day, the interests, machinery, and technology offer vital protection, simple upkeep process, the higher efficiency with decreased generation cost and improved productivity of the rice mill plants.

Nextech agri solutions
is an all-inclusive agriculture machinery and solution providers for grains and seed industry. They provide high-quality assistance and machinery for rice mills and others.

How to Determine the Moisture Content in Paddy?

Moisture content, as we define it, is the weight of water in rice or paddy expressed in percentage. In post-harvest handling, MC is stated on a wet basis (MCwb). Simply put, it’s percentage of water in a wet grain.

The importance of measuring moisture content

It’s imperative to determine accurate moisture content. This is done with a view to effectively manage and market paddy, for each purpose requires different moisture content.

For e.g. 18% MC for storing grains up-to 2 weeks, 9% for long-term storage, etc.

Inaccurate moisture testing could lead to:

  1. Grain loss if excessively dried
  2. Increased drying costs and paddy loss if milled at high moisture content
  3. Lower head rice, when milled at wrong moisture content
  4. Weight loss when dried excessively
  5. Mold development
  6. Heat buildup in the grain
  7. Pest infestation
  8. Discoloration
  9. Reduced yield
  10. Loss of germination

How to measure paddy moisture content?

There are two widely used methods to measure moisture content. These are:

1. Primary Method: It is based on weight measurements and is ramified into 2 steps:
– Oven method
– Infrared method
2. Secondary Method: It involves measuring the electrical traits of grains using an electronic instrument

There are a number of different portable moisture meters available in the market. One simply has to make sure that the chosen meter is suitable for harvesting paddy or grains to be milled, depending on whatever you’re planning to do.

Let’s take a look at the moisture content required for different post-production activities:

Paddy Harvesting

When harvesting paddy, one needs to keep in mind that lower moisture content can possibly lead to grain shattering and higher moisture content can lead to losses owing to poor grain quality.
– Ideal moisture content: 20-25%
– Primary losses: Grain shattering and poor quality

Paddy Threshing
– Ideal moisture content: 20% for manual threshing and 20-25% for mechanical threshing
– Primary losses: Breakage/cracking, grain damage and partial threshing

Paddy Drying

The drying process should begin within 24 hours of harvest. Otherwise, there’s a very high possibility of quality deterioration and grain damage.

It should also be noted that seeds should be dried well below 12% moisture content while grains to below 14%.
– Ideal moisture content: 14% or lower
– Primary losses: Discoloration, spoilage and fungal infestation

Rice Storage
– Ideal moisture content:
14% or less if it’s to be milled or stored or a month
Less than 13% for storage up-to 12 months
12% for seed storage
– Primary losses: Pest infestation, fungal infection, loss of germination, etc.

Rice Milling
– Ideal moisture content: 13-14%
– Primary losses: Cracking and breakage

I sincerely hope this post would be helpful to all those planning to venture into the business of rice processing and milling. For any further assistance, feel free to contact Nextech Agri Solutions, one of the best rice mill consultants in India.