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EasyMinings - CleanMAP Technology - Ammonium Phosphate from Mining Waste
EasyMinings´s CleanMAP technology extracts ammonium phosphate from mining waste or other sources. The CleanMAP technology enables cost effective production of pure and well defined monoammonium phosphate (MAP) or diammonium phosphate (DAP) of technical grade (i.e. fully water soluble). The process does not require any evaporation, making it highly energy efficient. It only uses common commercial chemicals such as hydrochloric acid, lime, ammonia etc.
Depending on composition of the initial raw material, the process can also allow extraction and separation of valuable elements in low concentrations that be made into commercial products. The cadmium content in the ammonium phosphate product is below 1 mg Cd/Kg P. Other pollutants such as uranium and thorium are also separated, creating a state-of-the-art clean product. The CleanMAP technology is highly flexible and can be integrated parallel to existing production lines, replace existing production lines or used in in new plants.
High energy consumption can be a big expense when producing water soluble MAP (monoammonium phosphate) and DAP (diammonium phosphate). The central part of our CleanMAP technology is to extract phosphorus from different phosphorus sources in the form of pure, solid and water-soluble phosphate salts (MAP, DAP) in a cost-effective way. The three main benefits of the Clean MAP process are:
Reduced capital costsCleanMAP renders entire plant sections unnecessary, such as evaporators, steam distribution systems, condensation systems, effluent gas treatment systems, cooling water systems, and acid storage facilities. Capital costs for the new technology are lower than the savings on excluded plant sections.
Reduced operational and maintenance costsCleanMAP reduces operational costs since no steam is needed for acid concentration, and no complex gas treatment is needed for effluent gases. Reduced maintenance cost are also achieved since there is no need for sludge and scale removal from evaporation systems.
Quality difference – technical grade vs. fertiliser gradeCleanMAP enables direct production of MAP or DAP of technical grade. Pollutants such as cadmium, uranium and fluorine are separated effectively. The products are well defined and completely water-soluble. Phosphorus concentration is about 20 percent higher than in ammonium phosphates of fertiliser grade.
Almost all phosphorus used in modern fertilisers originate from phosphate mines. The phosphate-containing apatite rock is mined and shipped to fertiliser industries. The fertiliser industry traditionally uses large amounts of energy for water evaporation to produce a highly concentrated phosphoric acid from the apatite.
The phosphoric acid is then used as a raw material for different types of phosphate fertilisers. This creates a large energy demand which constitutes a substantial part of the industry’s operational cost. The processes also often lack the ability to remove all the heavy metals present in the apatite, therefore the final product will contain heavy metals such as cadmium which end up in either the food or the soil.