Biological CaCO3 Dissolution for Magnesite Ore Enrichment
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Solution Overview
Problem
Current methods for enriching magnesite ore are costly, energy-intensive, and generate hazardous waste, with low efficiency in purifying low-quality ores, and require extensive physical and chemical processes that are environmentally unfriendly.
Innovation Solution
Development of new bacterial strains and fungal isolates that can biologically dissolve CaCO3 in magnesite ore, reducing the need for chemical treatments and energy consumption, and enabling in-situ processing at the mineral deposit, thereby decreasing labor and transportation costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional physical and chemical enrichment methods (magnetic separation, flotation, heavy medium separation) are used to purify magnesite, then the purity of magnesite is improved, but the cost increases and hazardous waste is generated
Solution Approach 1:
The patent replaces mechanical and chemical enrichment systems with a biological system. Bacteria are used to selectively dissolve calcium carbonate impurities from magnesite ore through biological leaching, substituting the need for magnetic separation, flotation, and heavy medium separation processes. This biological approach eliminates the generation of hazardous waste associated with conventional methods while achieving effective purification.
Solution Approach 2:
The patent introduces bacteria as an intermediary agent to facilitate the separation of magnesite from calcium carbonate impurities. These microorganisms act as a natural mediator that selectively attacks and dissolves the calcium carbonate phase while leaving magnesite intact, thereby achieving enrichment without direct mechanical or chemical intervention that would generate waste.
2Manufacturing precision
If conventional enrichment methods are used, then magnesite purity is improved, but energy consumption increases
Solution Approach 1:
The patent replaces energy-intensive mechanical and thermal processes with a biological process that operates under mild conditions. Instead of using high-energy magnetic separators, flotation machines, or calcination furnaces, the invention employs bacteria that naturally dissolve calcium carbonate at ambient temperatures and pressures, dramatically reducing energy consumption while maintaining purification effectiveness.
3Manufacturing precision
If low-quality ores are processed using conventional methods, then some enrichment is achieved, but the amount of recovered product is low and cost is high
Solution Approach 1:
The patent uses bacteria as a selective intermediary that can process low-quality ores effectively. The microorganisms selectively dissolve calcium carbonate impurities even in low-grade materials, releasing magnesium into solution which can then be recovered. This approach enables effective processing of low-quality ores that would be uneconomical to process using conventional methods, increasing both the amount and quality of recovered product.
4Manufacturing precision
If physical and chemical enrichment processes are applied, then magnesite is separated from gang minerals, but device complexity and process steps increase
Solution Approach 1:
The patent extracts the separation function from complex mechanical and chemical systems and concentrates it into a single biological process. Instead of implementing multiple sequential steps including magnetic separation, flotation, and heavy medium separation, the invention uses bacteria to directly dissolve calcium carbonate impurities in situ, simplifying the overall process flow and reducing the number of required process steps while maintaining effective separation.
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 microbial strains effectively decalcify magnesite, producing high-purity magnesium with reduced environmental impact and operational costs, and can be applied in low-quality mines without generating hazardous waste, offering a more economical and environmentally friendly alternative to traditional methods.
Implementation Method 1
bacterial strains and fungal isolates which can dissolve the CaCO3 mineral in the magnesite ore via biological mechanisms
Data Source
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AI summary
The present invention relates to new bacteria strains and fungus isolates which can dissolve the CaCO3 mineral in the magnesite ore via biological mechanisms. By means of the present invention; magnesite is enriched, a more economic and environment friendly dissolving process is obtained, enrichment of low quality minerals is enabled, chemicals are not used during dissolving process, and harmful wastes are not released to the environment.