Microwave Solubilization of Sulfide Ore Concentrates
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Solution Overview
Problem
Current methods for extracting precious metals from ore concentrates require high energy, pressurized oxygen, and complex reactors, and existing microwave applications lack industrial scalability and efficiency for sulphuric acid use.
Innovation Solution
A system utilizing industrial microwave energy at 915 MHz and sulphuric acid concentrate with pressurized oxygen to enhance solubilization of metals like iron, cobalt, nickel, copper, and platinum group metals in an aqueous medium, involving a blending device, multi-mode chambers, and external disaggregators to manage particle size and reaction conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional energy oxidant materials, highly pressurized oxygen and high temperature are used for extracting precious metals from ore concentrate, then metal solubilization efficiency is improved, but energy consumption and reactor complexity increase
Solution Approach 1:
The invention changes the energy parameter from traditional high temperature and high pressure to microwave radiation at specific frequencies (2.45 GHz or 915 MHz), achieving metal solubilization through electromagnetic field interaction with water molecules and sulfide minerals, thereby reducing overall energy consumption while maintaining extraction efficiency
Solution Approach 2:
The invention replaces mechanical/thermal energy systems (heating, pressurization) with electromagnetic field-based microwave energy, eliminating the need for complex high-pressure reactors and high-temperature furnaces, thus reducing both energy consumption and equipment complexity
2Productivity
If traditional energy oxidant materials, highly pressurized oxygen and high temperature are used for extracting precious metals from ore concentrate, then metal solubilization efficiency is improved, but reactor complexity and safety requirements increase
Solution Approach 1:
The invention replaces complex mechanical/thermal systems (high-pressure reactors, temperature control systems) with a relatively simple microwave heating system, using standard microwave generators and waveguides, thereby significantly reducing reactor complexity and safety requirements
Solution Approach 2:
The invention changes the operating parameters from extreme conditions (high pressure, high temperature) to mild conditions (ambient pressure, moderate temperature with microwave irradiation), allowing the use of simpler reactor designs without specialized armor or safety systems
3Speed
If microwave energy is used in metallurgy chemical reactions with sulphuric acid concentrate, then metal solubilization speed is improved, but industrial scalability and efficiency were previously insufficient
Solution Approach 1:
The invention segments the microwave heating process into controlled stages with specific power levels and durations, optimizing the interaction between microwave energy, sulphuric acid concentrate, and ore particles, thereby achieving both fast solubilization and industrial-scale productivity
Solution Approach 2:
The invention creates a multi-functional system where microwave energy simultaneously heats the reaction mixture, activates the sulphuric acid concentrate, and promotes chemical reactions, while the process can be scaled from laboratory to industrial production using the same fundamental principles
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Facilitates efficient solubilization of metals in an aqueous phase, reducing energy costs and reactor complexity, while maintaining operational safety and scalability for industrial applications.
Implementation Method 1
applying industrial microwave energy with a frequency at 915 MHz
Implementation Method 2
industrial microwave energy with a frequency at 915 MHz, as a catalyzer for chemical reactions
Implementation Method 3
sulphuric acid concentrate mixed with pressurized oxygen, which enhance the power of sulphuric acid oxidation as chemical oxidant, and facilitates the solubilization
Data Source
AI summary
A system for using aqueous means for solubilizing chemical components contained in Sulphur type ore concentrate which may contain iron, cobalt, nickel, copper, platinum group metals and other metals considered valuable and of commercial interest, and a method of using the aqueous means for solubilizing such components is described.