Ammonium sulfate crystallizer in mined ore application
Mining and Metal Process Solutions
HPD evaporation and crystallization systems are a critical process component in solution mining production, by-product recovery and internal process water management within the metals processing industry.
HPD crystallization systems are used to recover a majority of the domestic production of detergent grade sodium sulfate from such processes as battery recycling, chrome production and rayon manufacturing.
HPD specialty metal crystallization systems have processed a wide variety of specialty metals such as vanadium, tungsten, lithium and molybdenum. These systems have recovered vanadium, tungsten and molybdenum from spent catalysts and even produced lithium chloride for production of lithium batteries.
Copper and nickel sulfate crystallization is part of ore refining and recovered from spent metal processing solutions in HPD designed systems. In addition, HPD crystallizers recover fertilizer grade ammonium sulfate generated in the refining of nickel from mined ores.
HPD Alumina industry evaporator installation - South America
Evaporation and Crystallization Solutions for Alumina Refiners
In the aluminum industry, HPD evaporation and crystallization systems purify alumina from the refining of bauxite (Bayer Process) and recover aluminum and by-product salts from aluminum dross. HPD provides innovative processes in this important stage of alumina production. The custom designed, multi-stage flash evaporator systems provide an effective means to treat spent caustic liquor streams to produce strong liquor and quality condensate that is cycled back into the process.
Innovative Solutions for Scaling in Alumina Production
The control of fouling tendencies is also critical in the processing of spent caustic. If left unchecked, inconsistency in on-stream time and disruption of production schedules is often the result. HPD supplies an efficient design that maintains greater than 90% of capacity during cleaning. Reduction of scaling potential is instrumental to the guaranteed high availability of the system outside of planned shutdowns.
Some refineries require sodium oxalate removal as an important part of the overall process to ensure quality alumina output. HPD's oxalate removal systems purge salts and other non-process elements that would otherwise accumulate in the plant.
The evaporation system at the Alcan Gove G3 expansion required innovative process and mechanical engineering to achieve essential performance guarantees.
