Since 1972, Kappes, Cassiday & Associates (KCA) has specialized in the metallurgical treatment of gold and silver ores. KCA’s laboratory typically completes process development test work on over 100 different projects each year.  KCA always provides a logical, down to earth approach to metallurgical testing and in many cases sets the bar for current industry standards.  KCA’s test work is based upon real solutions developed from years of working in real mines.  KCA is a research oriented process development laboratory supporting the global mining community.  KCA works closely with a client to design testing programs that meet the client’s project objectives and maximize the client’s resources.  KCA works to always provide a quality, highly detailed product.  

​KCA can evaluate both precious as well as base and exotic metal ores using both cyanide and acid hydrometallurgical methods as well as physical processing methods such as gravity and flotation concentration. In addition, KCA conducts programs used for the design of other unit operations such as carbon adsorption, solvent extraction and electrowinning. KCA has the ability to provide laboratory and pilot scale studies using all-types of mineral beneficiation techniques. 

​KCA’ s laboratory facility is home to one of the very few pilot scale high pressure grinding roll (HPGR) units in North America. The ThyssenKrupp Polycom PILOTWAL HPGR unit is capable of producing between 6 and 8 tonnes of crushed product per hour and can be used to define both operational parameters as well as sizing for full-scale production units. 

KCA’s work to date has focused on using the HPGR for flow sheet development for both heap leach as well as milling circuits. These projects have ranged from precious metal to industrial product applications. 

​If you are interested in obtaining a quote for our process development test work, you may contact us HERE. – to contact page on KCA website.