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K2SO4 Mannheim Process Potassium Sulfate Making Machine is well-known as there are two kind of popular methods to be used to produce Potassium Sulfate 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 KCl + H2SO4 → K2SO4 + 2 HCl
Technical Advantage
| No. | Case | Date |
| 1 | SOP plant in Philippines for 10,000MTPA | In 2016 year |
| 2 | EPC project of SOP in Egypt for 60,000MTPA&100,00MTPA | In 2015 Year |
| 3 | Overhaul the furnace in Indonesia | In 2011 year |
| 4 | The project of SOP for 40,000MTPA | In 2010 year |
| 5 | Main equipment supplier of SOP in India for 20,000MTPA | In 2018 year |
| 6 | The EPC porject os SOP in Indonesia for 10,000MTPA | In 2008 year |
| 7 | The contractor of SOP in Phipilippines for 10,0000MTPA | In 2006 year |
| Description | Index |
| Content of potassium oxide (K2O) % ≥ | 50 |
| Content of chlorine (CL) % ≤ | 1.5 |
| Content of moisture % ≤ | 1.0 |
| Content of free acid (H2SO4) % ≤ | 0.5 |
| Appearance | White |
| Description | Index |
| Content of total acid (calculated by HCL) % ≥ (HCL)≥ |
31 |
| Content of iron (Fe) % ≤ | 0.005 |
| Content of oxide (calculated by CL-) % ≤ | 0.05 |
| Content of burnt leavings% ≤ | 0.08 |
| Content of sulfate (calculated by SO42-) % ≤ | A acid: 0.005 B acid: 0.5-0.75 Production ratio of A & B: ~1:2 |
| Content of arsenic (AS) % ≤ | 0.0001 |
| Description | Specification | Unit | Quantity |
| Potassium chloride | K2O 60% | Kg | 860 |
| Sulfuric acid | H2SO4 98% | Kg | 570 |
| Stone powder | Kg | 40 | |
| Electricity | V=380 50HZ | kwh | 60-70 |
| Fuel | Natural gas | Liter | 90 |
| Diesel oil | Liter | 75 | |
| Water used for process | ≤ 30ºC | M3 | 1.2 |
| Compensative water for cooling | M3 | 10 |
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