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a. Bahan baku :

‣ Potassium Chloride (KCl)

‣ Asam Sulfat

b. Proses Prembuatan ZK dengan bahan baku KCl dan CaSO 4

Ada 3 tahapan utama dalam metode proses ini, yaitu:

1. Pelarutan gypsum

2. Konversi satu tahap (T = 25ºC)

3. Siklus amoniak dalam proses

Diagram alir proses produksi ZK dengan dekomposisi KCl dengan CaSO4 dit

unjukkan pada gambar 4.8.

Fuel

Air

Potassium

Chloride

Reaction

Unit

Sulfuric Acid

Fume

Water

Tail

Gas

Scrubber /

absorber Unit

By Product

HCl 32 %

Crude

SOP

Cooling

Neutralization Unit

Screening

Unit

ZK

Product

Bagging

Unit

Crushing

Unit

Gambar 4.8 Diagram blok proses pembuatan pupuk ZK

48 | I n d u s t r i K i m i a I n d o n e s i a

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