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Filter Cake Utilization as Filler of 15-15-15+5S Compound Fertilizer: Particle Size Distribution and Granule Crushing Strength Properties

*Kasmadi Kasmadi  -  PT Pupuk Kujang Cikampek, Indonesia
Budi Nugroho  -  Department of Soil Science and Land Resources, Faculty of Agriculture, IPB University, Indonesia
Atang Sutandi  -  Department of Soil Science and Land Resources, Faculty of Agriculture, IPB University, Indonesia
Syaiful Anwar  -  Department of Soil Science and Land Resources, Faculty of Agriculture, IPB University, Indonesia
Open Access Copyright (c) 2019 Reaktor under http://creativecommons.org/licenses/by-nc-sa/4.0.

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Abstract

Compound fertilizer which combining organic-inorganic materials need to be developed to improve the effectivness of fertilizers in the soil. Filter cake as a material has highly potential to be used as a filler in physical process granulation of compound fertilizer. In this study, the particle size distribution and granule crushing strength properties were tested using 15-15-15 + 5S fertilizer compound formula, which are varied in the filler composition and K sources. Potassium sources consisted of 2 (two) types of fertilizers i.e KCl and K2SO4. Filler composition as a binder in fertilizer granulation consists of 5 combination filter cake and clay ratios (60:40, 70:30, 80:20, 90:10 and 100:0). Granulation carried out by the granulation method using pan granulator of 2 kg/batch capacity, 23 rpm rotation speed and 50o pan slope. The results of the research showed that statistically the combination of filter cake and clay 70:30 had a size distribution and hardness of granules not significantly different from standard fertilizer (100% clay).

 

Keywords: crushing strength; filler; filter cake; granulation; size distribution

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Funding: PT Pupuk Kujang Cikampek

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Section: Research Article
Language : EN
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