MINCHEM

MINCHEM^R Application

MINCHEM is Syensqo's proprietary solvent extraction modeling application. MINCHEM gives users the ability to evaluate various circuit feed conditions, plant configurations, and reagent formulations. The program helps identify the optimum extractant for any circuit condition and choose the operating parameters on the plant that will achieve the best metallurgical results. The evaluations are based on McCabe-Thiele diagram construction using real or simulated isotherms.

Two main types of models can be evaluated using MINCHEM: Circuit Design and Circuit Analysis

Circuit Design Models

MINCHEM Design mode models allow the user to predict the Cu Recovery, Cu Transfer, and Net Transfer of a circuit given the following input variables:

PLS Cu grade and pH
Concentration and type of extractant
Desired extract O/A ratio or PLS/Organic flowrates
Lean electrolyte Cu concentration (gpl Cu) or desired strip O/A ratio or electrolyte flowrate
Circuit configuration
Stage efficiency

Operator and metallurgists can use MINCHEM Circuit Design models to understand the impact of changes in feed conditions and make the correct operational changes to optimize the solvent extraction process.

Example:

Input conditions

Design mode outputs

Under the operating conditions provided, Cu Recovery is estimated at 96.69%, Cu Transfer is 69.61% ton/day and Net Transfer is 0.29 g/L Cu per vol%. The full McCabe-Thiele plot is available for each model.

McCabe-Thiele Diagram

Circuit Analysis Models

MINCHEM Analysis mode models allow the user to evaluate the performance of a solvent extraction circuit. Analysis of the aqueous and organic copper at the entrance and exit of each stage is obtained and then entered as the input to the model. MINCHEM calculates the stage efficiency and metallurgical O/A ratio to determine the efficiency and stability of the circuit.

Example: