Temperature-Controlled Mineral Milling for Mechanochemical Activation
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Solution Overview
Problem
Existing mechanical activation methods for mineral materials like clays face inefficiencies, with only 25% of applied milling energy converted into chemical energy, leading to overheating and loss of beneficial properties, and require energy-intensive thermal processes that emit pollutants.
Innovation Solution
A temperature-controlled mechanical activation process using a mill with integrated temperature sensing and control systems to regulate energy input and material feed, preventing overheating by maintaining optimal grinding conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If mechanical activation is performed through intensive grinding, then chemical activation energy is converted, but 75% of milling energy is converted into heat causing material overheating and loss of beneficial properties
Solution Approach 1:
The patent implements a control device that continuously monitors the temperature of the material during mechanical activation and dynamically adjusts the drive power of the mill based on temperature feedback. This closed-loop control system prevents overheating by reducing energy input when temperature thresholds are approached, thereby maintaining the balance between achieving sufficient chemical activation and preventing thermal degradation of the material's beneficial properties.
2Reliability
If thermal activation is used to activate clays, then activation is achieved, but high energy consumption and pollutant emissions occur
Solution Approach 1:
The patent replaces the conventional thermal activation process with a mechanical activation process using a mill. Instead of heating clay to high temperatures (900-1000°C) to achieve activation, the system uses intensive mechanical grinding to convert milling energy directly into chemical activation energy. This substitution eliminates the need for fuel combustion and associated pollutant emissions while significantly reducing energy consumption, as mechanical activation can proceed at ambient or controlled low temperatures.
3Temperature
If drive power is reduced to prevent overheating, then temperature control is improved, but activation quality deteriorates due to insufficient energy input
Solution Approach 1:
The patent employs dynamic adjustment of drive power rather than a fixed reduction. The control device continuously adapts the mill's drive power based on real-time temperature measurements, allowing the system to operate at high power levels when temperature is low (maximizing activation) and automatically reduce power only when temperature approaches critical thresholds. This dynamic approach maintains both temperature control and activation quality throughout the processing cycle.
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
Ensures consistent activation quality by efficiently converting milling energy into chemical energy, preserving the material's properties and reducing energy consumption and emissions.
Implementation Method 1
The temperature sensing element can be a thermocouple, for example, or it can also be designed as an IR sensor
Implementation Method 2
The first temperature sensing element is arranged in or on the mill
Implementation Method 3
the mill has a cooling device. The cooling device is arranged in or on the housing of the mill or is a component of the housing
Implementation Method 4
The mill has a drive. The energy is introduced into the mill via the drive
Data Source
Figure 1
AI summary
The invention relates to a device for mechanically activating a mineral material. The device has a mill (10), said mill (10) having a drive (20). The device has at least one first temperature-detecting element (30), said first temperature-detecting element (30) being positioned in or on the mill (10), and the device has a controller (40), wherein the device has a material feed (50) for supplying milling material to the mill (10), the controller (40) is connected to the first temperature-detecting element (30) in order to transmit the detected temperature, and the controller (40) is connected to the drive (20) in order to control the drive power and to the material feed (50) in order to control the supplied quantity of milling material.