How to Make Mineral Fertilizer Granules As Required Sizes?

Mineral fertilizer granules production of precise sizes involves a meticulous process that requires not only a deep understanding of raw materials but also the appropriate machinery. In general, mineral fertilizer particle size of 3-4mm is very popular in the fertilizer market. Thus, how to make the ore powder pellets in 3 to 4mm for sale? The focus will be on three main parts: preparation of the mineral materials, granulation, and post-granulation processes.

What Mineral Raw Materials Are Used for Fertilizer Granulation?

In the production of fertilizers, a wide array of mineral raw materials can be of use for granulation purposes. Commonly, these materials include limestone, calcite, barite, dolomite, potassium feldspar, marble,talcum, gypsum, kaolin, bentonite, medical stone, rock phosphate, iron ore, quartz, active carbon, coal, etc. For one thing, if the raw materials are hard solids, you must crush them in a powdered form. Conversely, if you already procure ore powder, you can directly feed them into a powder granulation machine to produce the desired granular fertilizer products.

Ore Powder

Ore Powder

How to Prepare The Mineral Raw Material for Fertilizer Production?

At the beginning, you should pay attention to prepare raw mineral materials. Because this step is crucial, as the quality of the granules heavily depends on the consistency and size of the initial material. In addition, the preparation involves two critical steps: crushing and milling.

Grinding Original Stone ≤1200mm Diameter by Jaw Crusher

Firstly, the ore fertilizer crusher machine comes into play. It efficiently breaks down large chunks of minerals, with an original stone diameter of ≤1200mm, into smaller pieces. Moreover, we design jaw crusher specifically to handle these large dimensions, ensuring a high reduction ratio. Following the crushing process, you can get the milled minerals. Typically, they have a specific fineness ranging from 10mm to 300mm, for subsequent granulation processes. Because the next step requires precise particle sizes for optimal product quality.

Raw Materials of Raymond Mill

Manufacturer of Jaw Crushing Stone Plant

Raw Materials of Raymond Mill

Raw Materials of Raymond Mill

Raymond mill — fine grinding equipment

If you need to process raw materials with smaller particle size for subsequent granulation process, the Raymond mill can meet your fine processing needs. Also, it is a secondary crushing equipment that can further crush coarsely crushed limestone to finer particles. Apparently, it is capable of producing a finer limestone powder. Raymond mill has the characteristics of high efficiency, low energy consumption and adjustable crushing particle size. To be honest, it can achieve a production output of 10-320T/D and the equipment prices can range from $20,000 to $100,000.

How Are Mineral Powders Transformed Into Granules?

Large Scale Pan PelletizerRotary Drum Granulator

Transitioning from fine mineral powder to granules is where the magic happens. This transformation requires precise control and the right equipment. Two types of granulators are primarily used for this purpose: the disc granulator machine and the rotary drum fertilizer granulator. Each of these machines has its unique method of granulation, yet both are capable of producing 3 to 4 mm sized granules.

The disc granulator uses a rotating disc to agglomerate the mineral powders into granules. Through adjustment, one can control the size of the granules. On the other hand, the rotary drum fertilizer granulator utilizes a slightly different approach, where the mineral powder is fed into a rotating drum, and the motion within the drum forms the granules. This method is particularly effective for achieving the desired 3 to 4 mm granule size.

Why Is Screening Necessary After Granulation?

After granulation, not all granules will be of the required size. Here, the screening machine plays a pivotal role. It separates the granules into the desired sizes, ensuring consistency and quality. The granules that are too large can be crushed and regranulated, while the too small ones can be reprocessed, ensuring minimal waste and maximizing efficiency.

Indeed, the post-screening phase is not the end. Double roller press granulator often comes into play to enhance the granules’ hardness and shape, making them more suitable for sale and application. This step ensures that the granules are not only of the correct size but also have the physical properties required for easy handling, storage, and application.

Pulse Bag Type Dust Collector

2T-H Roller Compact Granulator for NPK Pellets

In conclusion, making mineral fertilizer granules of specific sizes involves a detailed and equipment-intensive process. From preparing the mineral materials through crushing and milling, granulating using either a disc or drum granulator, to screening and post-treatment, each step is crucial. The use of specific machinery, such as ore fertilizer crusher machines, jaw rock crushers, Raymond mills, disc granulators, and rotary drum fertilizers granulators, ensures the production of high-quality mineral fertilizer granules ready for sale and application. Through careful control and process optimization, manufacturers can achieve the desired granule size, thereby meeting market needs and contributing to agricultural productivity.