Precipitation is a process widely employed in hydrometallurgy for recovery of metal values or removal of impurity elements from process solutions. AuTec has undertaken testing on precipitation in a number of projects for flowsheet development. The most commonly tested precipitation processes are limestone/lime/soda ash neutralization and sulfide precipitation.
AuTec has equipment to support a variety of environmental work. Many of the environmental tests use typical laboratory equipment, such as agitated tanks, rotating bottle and shake flasks. In additional, AuTec has trains of agitated tanks of various sizes to run continuous water treatment processes, and also thickeners.
AuTec has a cyanide destruction test kit which includes 2 L tanks, agitators and stands that can be shipped and assembled on site. The requirements for on-site tests are process air for tests involving SMBS, power (120 or 240 V) and access to on-site assay lab for quick turnaround of samples. The equipment can be shipped to site and assembled by our personnel immediately after their arrival.
Counter Current Decantation circuit is mainly used to separate solids in slurry, as well as to wash out any leachate entrained in the solid phase. AuTec’s thickeners have 39 cm inner diameters and are 98 cm high with a working volume of 115 L. The body is made of acrylic; other parts such as thickener head, cone and base, rake and rake mechanism are stainless steel. The thickeners are also fitted with a mixing pot where flocculant solution is added and mixed with slurry before flowing into the thickener feed well.
Precipitation is a process widely employed in hydrometallurgy for recovery of metal values or removal of impurity elements from process solutions. AuTec has undertaken precipitation of copper sulfide using H2S gas.
Mini-Flotation pilot plant (10-20 kg/h) for continuous flotation, plant simulation, flowsheet development, reagent optimization at lab or for testing at a mine site.
Pilot equipment consists of a batch rod mill, feed tank, CFM-12 continuous flotation bank, continuous pin regrind mill, reagent pumps, Malvern Mastersizer and DeltaV control system.
The M4 Tornado is a top of the line micro x-ray fluorescence scanning unit. The system is equipped with dual 60mm energy dispersive detectors and a rhodium x-ray tube. Spot size is variable to maximum resolution of 20 microns. The system is capable of accepting large sample sizes and can produce element or mineral maps.
The TIMA-X Probe is AuTec’s newest automated mineral analysis platform. This is a large chamber unit accepting large samples. The platform includes a state of the art Oxford microanalysis system as well as dual EDAX Element 30 EDS detectors and a cathodoluminescence system. The system uses an isolated column which allows for unparalleled beam stability. Being a TIMA combined with an Oxford microanalysis system, the system is capable of but not limited to:
AuTec’s two TIMA-X systems are state of the art rapid automated mineral analysis systems. The systems are powered by two EDAX Element 30 energy dispersive detectors and upgraded pulse processing units. Each systems accepts both 25 and 30mm polished sections. Examples of the data provided are:
AuTec’s quantitative microanalysis system is installed on our newest TIMA-X system. The microanalysis system is comprised of an X-Max 150 mm EDS detector and an Inca Wave 700 WDS. Both EDS and WDS are used in tandem to quantify elements from major to trace levels.
Bruker D8 Focus (Powder diffractometer)
Pulverizers are used to reduce particle sizes to analytical fineness. The pulverizing units at AuTec are low chrome steel ring and puck models.