K2SO4 Mannheim Process Potassium Sulfate Making Machine is well-known as there are
two kind of popular methods to be used to produce PotassiumSulfate Product, one is Double
decomposition method, the reaction is not good, the product quality should be improved.
Another method is the Mannheim furnace process, it is used widely, but there are some
difficulties occurred during the production. We had made the necessary and important
improvement and perfection on its production equipment and production process of
Mannheim furnace, to form a unique and perfect Potassium Sulfate production technology
now, improve the construction and material of furnace to achieve even heating, complete
reaction and low energy consumption. New material and technology is applied to the part
of hydrochloric acid absorption, thus absorption efficiency is enhanced and environmental
issue is also well resolved.
Mannheim Process
The most common method of producing potassium sulfate is the Mannheim Process,
which is the reaction of potassium chloride with sulphuric acid at high temperatures. The
raw materials are poured into the centre of a muffle furnace heated to above 600ºC.
Potassium Sulfate is produced along with hydrochloric acid in a two-step reaction via
potassium bisulphate. This method for creating SOP accounts for 50% to 60% of global
supply. The Mannheim Process is also the most expensive of the processing techniques
due to the high input costs associated with purchasing MOP and sulphuric acid. This means
that the final product costs about $500 per ton.The Mannheim process is an important
method for the manufacture of hydrogen chloride and potassium sulfate from potassium
chloride (table salt) and sulfuric acid in which case the K2SO4 is known as salt cake:
2 KCI + H2SO4 →K2SO4 +2 HCI
Technical Advantage
1. Some key components of our potassium sulfate fertilizer equipment are made of special
materials which are corrosion resistant and durable. Hence, this fertilizer equipment also f
eatures long service life.
2. Waste recovery system to recycle hydrochloride acid (HCl) and meet environment requirements
3. Adjusted original HCl absorption system, improved on the quality of the final product.
4. Improved the flue design in the furnace which can make full use of energy and save
energy consumption.
5. Used PLC automatic control system to control manufacturing the products, adjust the ratio
of feedstock, and saved the labor cost.
6. Adopt gas generator replacing other heating method.
7. Stable production and easy operation.
8. Large output& Low coal consumption
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