Rotating Drum Ore Comminution with Accelerating Elements
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional ore comminution methods, such as ball mills, are inefficient, lead to high energy consumption, significant wear, and health risks due to dust development, and are unsuitable for processing brittle slag, requiring multiple units and additional grinding elements.
Innovation Solution
A device comprising two movable comminuting elements with accelerating protrusions or recesses that create a comminuting space for ore, allowing for effective pulverization through micro-impact and rotation, eliminating the need for additional grinding elements and reducing wear and energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ball mills with grinding cylinders and balls are used for ore comminution, then pulverisation can be achieved, but the grinding cylinder weight is greatly increased and energy consumption is high
Solution Approach 1:
The invention extracts and eliminates the grinding cylinder and balls from the conventional ball mill configuration. Instead of using a rotating cylinder with grinding media, the patent employs a simpler device with a rotating drum that directly pulverizes ore through mechanical action and impact, thereby removing the heavy grinding cylinder and reducing energy consumption
Solution Approach 2:
The invention inverts the conventional ball mill approach by using a rotating drum with direct impact mechanism rather than a stationary grinding cylinder with rolling balls. The drum rotates in a way that creates direct impact and pulverisation action, reversing the traditional grinding mechanism to achieve lower energy consumption
2Reliability
If ball mills with grinding cylinders are used, then ore can be ground, but the grinding cylinder is subject to high wear and must be replaced after relatively short time
Solution Approach 1:
The invention removes the grinding cylinder component entirely from the system. Instead of having a grinding cylinder that wears and requires replacement, the patent uses a rotating drum with a simpler structure that directly pulverizes ore through impact and mechanical action, eliminating the wear problem associated with grinding cylinders
Solution Approach 2:
The invention employs a simpler, more wear-resistant drum structure that can operate for longer periods without requiring replacement. The drum is designed to withstand the pulverisation process better than traditional grinding cylinders, reducing maintenance needs and service life constraints
3Reliability
If ball mills are used for ore comminution, then pulverisation can be achieved, but multiple ball mills connected one behind the other are required and effective pulverisation is hardly possible
Solution Approach 1:
The invention merges the functions of multiple ball mills into a single integrated device. The rotating drum performs both the grinding and pulverisation actions that would traditionally require separate stages of processing, combining multiple functions into one unit that achieves effective pulverisation without requiring multiple connected ball mills
Solution Approach 2:
The invention segments the comminution process into distinct functional zones within the single drum structure. Different regions of the drum provide different types of action (impact, abrasion, compression) to achieve progressive comminution and pulverisation, replacing the need for multiple separate ball mills with segmented functional zones
4Productivity
If conventional comminution methods are used, then ore can be processed, but dust is developed which affects the health of people involved
Solution Approach 1:
The invention incorporates hydraulic or pneumatic elements in the drum structure that create a controlled environment during pulverisation. The rotating drum with water or liquid medium creates a wet pulverisation process that suppresses dust generation while maintaining effective comminution and pulverisation capabilities
Solution Approach 2:
The invention introduces water or liquid medium as an intermediary substance in the pulverisation process. This liquid intermediary suppresses dust generation by wetting the ore particles during comminution, while still allowing effective pulverisation to occur through the mechanical action of the rotating drum
5Strength
If ball mills are used, then ore can be ground, but the weight of the grinding cylinder is greatly increased to withstand balls striking against the cylinder wall
Solution Approach 1:
The invention extracts and removes the heavy grinding cylinder from the system. Instead of using a thick-walled cylinder to withstand ball impact, the patent employs a lighter rotating drum structure that achieves pulverisation through direct impact mechanism, eliminating the need for heavy cylinder walls
Solution Approach 2:
The invention replaces the mechanical ball-mill system with a direct impact pulverisation system. The rotating drum creates pulverisation through its own rotation and direct contact with ore, substituting the need for heavy grinding cylinder walls with a simpler, lighter structure that uses different mechanical action
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 device achieves efficient and rapid pulverization of ore and slag with minimal wear and energy input, allowing for direct processing without pre-comminution, reducing dust and operational costs, and enabling effective comminution of brittle materials.
Implementation Method 1
by a relative movement in the form of a rotation of at least one of the two comminuting elements the ore to be comminuted is pulverised in that one or more accelerating elements, in particular protrusions, are provided on at least one of the comminuting elements
Implementation Method 2
the striking of this differently accelerated ore also provides pulverisation by means of the so-called micro-impact of ore
Data Source
AI summary
A device and method for comminuting ore and/or slag with an ore feeding unit for feeding ore to a pulverizer, wherein the pulverizer includes at least two comminuting elements that form at least one comminuting space for the ore such that, by a relative movement in the form of a rotation of at least one of the comminuting elements, the ore is pulverized. One or more accelerating elements are provided on the at least one of the comminuting elements for accelerating and comminuting the ore by the rotation of one of the comminuting elements. An intermediate space is provided between two comminuting elements and/or in at least one of the comminuting elements, through which the pulverized ore, during the rotation, is transported from the center of rotation, and an outlet unit is provided, which is connected to the intermediate space and through which the pulverized ore is discharged.