Impact Cone Stabilizes Fluidized Matter Feeding
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Solution Overview
Problem
Existing methods for feeding fine-grained matter to suspension smelting furnaces, such as copper sulfide concentrate or copper matte, face challenges in accurate and efficient delivery due to disturbances affecting weight measurement and fluidization control.
Innovation Solution
A method and arrangement involving a fluidization step followed by controlled feeding through a dosing bin and conveyor system, utilizing a loss-in-weight controller and an impact cone to stabilize fluidized matter distribution, with optional adjustments based on filling time comparisons to optimize fluidization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If fine-grained matter is fed directly to the concentrate or matte burner, then the feeding process is simple, but the weight measurement accuracy deteriorates due to disturbances from fluidization and material flow
Solution Approach 1:
The feeding system is divided into separate functional sections: a fluidization arrangement for preparing the fine-grained matter, a dosing bin for controlled feeding, and a conveyor means for delivery to the burner. This segmentation isolates the weight measurement function in the dosing bin from the disturbances of fluidization and material flow, improving measurement accuracy while maintaining manageable system complexity through modular design.
Solution Approach 2:
The dosing bin acts as an intermediary element between the fluidization arrangement and the conveyor means. It receives fluidized fine-grained matter, stabilizes the material flow, and provides a controlled interface for weight measurement before feeding to the burner. This intermediary structure buffers the disturbances from fluidization and conveyor operation, enabling accurate weight measurement.
2Productivity
If fluidized fine-grained matter is fed directly from the fluidization arrangement to the burner, then the feeding process is direct, but the delivery consistency deteriorates due to flow disturbances and weight measurement inaccuracies
Solution Approach 1:
The fine-grained matter is pre-fluidized in the fluidization arrangement before being fed to the dosing bin and conveyor means. This preliminary fluidization action ensures the material is properly prepared for controlled feeding, improving flow characteristics and delivery consistency without sacrificing feeding efficiency. The dosing bin then maintains this consistent delivery through controlled discharge.
Solution Approach 2:
The dosing bin serves as an intermediary that stabilizes the transition from fluidized state to controlled feeding. It receives the fluidized material, provides a controlled environment for weight measurement and dosing, and ensures consistent delivery to the conveyor means and burner, thereby improving reliability while maintaining productivity through efficient material handling.
3Measurement precision
If the impact cone is supported from the floor or separate structure, then the structure is stable, but the filling process disturbs the loss-in-weight controller affecting measurement accuracy
Solution Approach 1:
The impact cone is merged with the filling valve structure, forming an integrated assembly. The impact cone is supported from the filling valve body rather than from a separate floor or structure. This merging eliminates the disturbance to the loss-in-weight controller caused by separate support structures during filling operations, improving measurement accuracy while maintaining operational stability through the integrated design.
Solution Approach 2:
The filling valve body acts as an intermediary support structure for the impact cone. By supporting the impact cone from the filling valve rather than from external structures, the system isolates the weight measurement function from the mechanical disturbances of the filling operation, enabling accurate weight measurement during the filling process while maintaining ease of operation.
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
Enhances the accuracy and efficiency of feeding fine-grained matter to suspension smelting furnaces by stabilizing weight measurement and fluidization, ensuring consistent delivery and reducing operational disruptions.
Implementation Method 1
a fluidization step for producing fluidized fine-grained matter with a fluidization arrangement
Data Source
AI summary
The invention relates to a method and to an arrangement for feeding fine-grained matter to a concentrate or matte burner (1) of a suspension smelting furnace (2). The arrangement comprising a fluidization arrangement (3) for feeding fluidized fine-grained matter into a dosing bin (4), and a conveyor means (6) for feeding fluidized fine-grained matter from the dosing bin (4) to the concentrate or matte burner (1) of the suspension smelting furnace (2), and a loss-in-weight controller (5) between the dosing bin (4) and the conveyor means (6). The arrangement comprises an impact cone (8) arranged below a filling valve (7) between the fluidization arrangement (3) and the dosing bin (4) for distributing fluidized fine-grained matter flowing from the fluidization arrangement (3) within the dosing bin (4).