​What is the limestone fertilizer production line?


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Limestone fertilizer production line is a kind of fertilizer production line that uses limestone as the main raw material to produce fertilizer. Limestone cannot be used directly to producer fertilizer therefore it needs to be processed in order to be used in the fertilizer making procedure. Limestone fertilizer is widely used in the fertilizer industry due to its alkaline properties to optimize the acidic soil condition. The process flow of making limestone fertilizer are as follows: Raw material grinding, lime powder calcination, hydration, mixing, granulation, drying, cooling, screening, packaging.


What are the steps of making limestone fertilizer?

The first step of making limestone fertilizer is getting the limestone from the quarry, TONGLI also manufactures SAG mill for world famous mining company. After the limestone is crushed, it needs to be further grinded using the vertical roller mill to the required mesh.


What you need to know before making limestone fertilizer?

The limestone powder needs to be heated to over 1000 degrees in the lime kiln to undergo the reaction called calcination, the by product for this process is CO2 and the formation of this reaction is CaO calcium oxide.


What is the first step of making limestone fertilizer?

The first step of making limestone fertilizer is the hydration of the quicklime, the calcinated lime powder is mixed in the reactor to form Ca(OH)2 which is an important ingredient for making fertilizer.


How to make limestone compound fertilizer?

In order to make limestone compound fertilizer, the Ca(OH)2 is mixed and blended with other raw materials nitrogen (N), phosphorus (P), and potassium (K), to form granules. The process flow of making limestone compound fertilizer including: granulation, drying, cooling, coating, screening, packaging.


1. The blended fertilizer mixture enters the rotary drum granulator to form granule.

2. The newly formed granules are fed into the dryer to remove the extra moisture to ensure the stability.

3. Materials coming out form the dryer enters the cooler to prevent moisture regain and cool the material down to the required temperature for further processing.

4. Unqualified particle are sent back to the granulator or crusher by the conveyor belt, and qualified particle proceed to the rotary drum coating machine.

5. With the combination of anti-caking agent and coating oil, the raw materials are coated therefore the resistance to moisture is improved.

6. The last step of making limestone fertilizer Is packaging, limestone based NPK compound fertilizer is being stored in bags or cans for distribution.



How to make Limestone fertilizer?

A limestone fertilizer production line is a manufacturing process that involves the production of fertilizer using limestone as a key ingredient. Limestone is a sedimentary rock primarily composed of calcium carbonate (CaCO3). It is commonly used in the fertilizer industry due to its high calcium content and alkaline properties to improve the soil conditions.


This article is authored by full-time technical writer Richard Zhu