Agglomeration Drum Gas Recirculation for Leaching Yield
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Solution Overview
Problem
Hydrometallurgical agglomeration drums in the prior art release toxic gases to the environment, limit the use of effective reagents due to toxicity, and do not efficiently utilize recirculated gases, leading to environmental contamination and reduced extractive yields in leaching processes.
Innovation Solution
An agglomeration drum with a gas recirculation system and a chemical process that produces uniform, stable agglomerates with increased reagent contact surface, preventing gas release and allowing the reuse of recirculated gases, thereby enhancing the extractive yield and reducing environmental and health risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional agglomeration drums are used to process minerals, then the leaching process can proceed, but toxic gases are released to the environment causing contamination and health risks
Solution Approach 1:
The patent applies an inert atmosphere principle by creating a closed system where gases are recirculated rather than released to the environment. The drum is equipped with a sealed structure and gas recirculation system that maintains an enclosed atmosphere, preventing toxic gases from escaping while allowing the leaching process to proceed efficiently.
Solution Approach 2:
The patent converts the harmful toxic gases into a beneficial resource by recirculating them back into the drum. The gas recirculation system captures gases that would otherwise be harmful emissions and reintroduces them to the process, where they can participate in further reactions or be treated, thus transforming an environmental hazard into a process asset.
2Productivity
If effective reagents are used to improve extractive yield, then leaching efficiency increases, but the use of toxic reagents is limited due to environmental concerns
Solution Approach 1:
The closed system with inert atmosphere allows the use of reagents that would otherwise be restricted due to their toxic properties. By preventing the release of gases generated during reactions with these reagents, the system enables process engineers to select from a broader range of chemically effective reagents without environmental penalties.
Solution Approach 2:
The gas recirculation system allows toxic reagents to be used more freely by capturing and recirculating the gases they produce. This converts what would be harmful emissions into a controlled process parameter, enabling the use of highly effective but previously restricted reagents to maximize extractive yield.
3Device complexity
If gases are released to the environment, then the process is simple and open, but environmental contamination occurs and operating costs increase
Solution Approach 1:
The gas recirculation system converts what would be waste emissions into a valuable resource. By recirculating gases back into the drum, the system reduces the need for continuous addition of fresh reagents, thereby lowering operating costs while maintaining process effectiveness. The complexity introduced is offset by the economic benefits of reduced material consumption.
Solution Approach 2:
Instead of discarding gases to the environment, the system recovers and recirculates them. This approach transforms a waste stream into a process asset, reducing the need for continuous input of fresh materials and lowering operational expenses, despite the added complexity of the recirculation infrastructure.
4Device complexity
If conventional open drums are used, then the structure is simple, but uniform agglomerates with high reagent contact surface are not achieved
Solution Approach 1:
The closed inert atmosphere system enables better control over the agglomeration process conditions. By maintaining a controlled environment with recirculated gases, the system ensures more uniform reaction conditions throughout the drum, leading to more consistent and uniform agglomerate formation with better reagent contact surfaces.
Solution Approach 2:
The gas recirculation system ensures continuous and uniform distribution of reactive gases throughout the process. This continuous action maintains consistent reaction conditions across all material in the drum, promoting uniform agglomerate formation rather than localized variations that would occur in open systems.
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
The solution increases the extractive yield of leaching processes, reduces environmental contamination, and enables the use of effective reagents by recirculating gases and optimizing the agglomeration process, resulting in improved material recovery and reduced formation of elemental sulfur barriers.
Implementation Method 1
having a gas recirculation system, which by being closed keeps gases inside the agglomeration drum and process. This recirculation of gases not only allows preventing the release of said gases to the environment, but it also reduces the operating costs by using the recirculated gases as part of the agglomeration process.
Implementation Method 2
uniform agglomerates are produced known as 'aggregates', which are used in later processes as leaching
Implementation Method 3
The process of chemical reactions occurring inside the agglomeration drum is included in the agglomeration procedure
Implementation Method 4
provided with rectangular cross-section lifting bars in the inside, properly spaced, so that a rolling movement of the material inside the same is generated
Implementation Method 5
a rolling movement of the material inside the same is generated. The rotational speed of the agglomeration cylinder... are studied for each case according to the nature and size of the mineral particles
Data Source
AI summary
The present invention refers to an agglomeration drum and to a procedure for the agglomeration of mineral inside said drum for the pretreatment of minerals, both of them mainly used in hydrometallurgy. Said drum and procedure use a system and a phase of recirculation of gases as part of the invention. Additionally, in the agglomeration procedure the process of chemical reactions occurring inside the agglomeration drum is included. The agglomeration drum, agglomeration procedure and the reactive process allow to obtaining uniform, stable and poorly degradable agglomerates that have a bigger agglomerate-reagent contact surface. The agglomerates or aggregates produced in the agglomeration drum and according to the process of the invention increase the extractive yield of the later leaching process, thus reducing the creation of preferred ways for the leaching solution in the leaching piles. In addition, the drum and procedure of the invention allow preventing the release of gases to the environment, having a gas recirculation system, which by being closed keeps gases inside the agglomeration drum and process. This recirculation of gases not only allows preventing the release of said gases to the environment, but it also reduces the operating costs by using the recirculated gases as part of the agglomeration process.