Ecological Foamed Ceramic from Lepidolite Filter Mud
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Solution Overview
Problem
The disposal of lepidolite filter mud, a byproduct of lithium ore beneficiation, poses ecological security risks due to slow sedimentation, high water content, and difficulty in transportation and utilization, leading to inefficient consumption and limited application scenarios.
Innovation Solution
Preparation of ecological foamed ceramics using lepidolite filter mud as the main raw material with sodium carbonate and silicon carbide as a composite foaming agent, involving ball milling, homogenization, drying, material distribution, and heat treatment to create a ceramic suitable for water purification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If lepidolite filter mud is disposed of by stacking, then transportation and utilization difficulties are avoided, but ecological security risks increase and large-scale consumption is not achieved
Solution Approach 1:
The invention converts the harmful waste filter mud into a beneficial building material (foamed ceramic). The filter mud, which poses ecological risks when stacked, is transformed through a sintering process into a useful product for water treatment and construction, thereby eliminating harm while achieving large-scale consumption
Solution Approach 2:
The invention changes the physical and chemical parameters of the filter mud through controlled sintering at specific temperatures (900-1100°C) and adding foaming agents. This transforms the waste material into a porous ceramic structure with desired properties for water treatment applications
2Adaptability or versatility
If existing technical means are used to prepare ceramic products, then product turnover frequency is low, but application scenarios are severely limited
Solution Approach 1:
The foamed ceramic product prepared from filter mud has multiple applications including water treatment filtration, construction materials, and insulation materials. This multi-functionality expands application scenarios while the standardized production process maintains high turnover frequency
3Productivity
If lepidolite filter mud is used as main raw material with composite foaming agent, then large-scale consumption is achieved, but manufacturing complexity increases
Solution Approach 1:
The invention performs preliminary classification of the filter mud by particle size before sintering, and pre-mixes the foaming agents (sodium carbonate and silicon carbide) with the classified mud. This preliminary preparation simplifies the overall manufacturing process by organizing raw materials in advance, making the sintering stage more efficient and manageable
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 method enables large-scale consumption of lepidolite filter mud, reducing environmental pollution and ecological risks, while producing a ceramic with a wide application range and high replacement frequency for water treatment.
Implementation Method 1
using sodium carbonate and silicon carbide as a composite foaming agent... heat treatment to create a ceramic
Implementation Method 2
involving ball milling, homogenization, drying, material distribution, and heat treatment
Implementation Method 3
heat treatment to create a ceramic suitable for water purification
Data Source
AI summary
A method for preparing an ecological foamed ceramic from lepidolite filter mud whole waste belongs to the field of environmental protection and resource reuse. The ecological foamed ceramic with excellent properties can be prepared by using lepidolite filter mud as the main raw materials, including ball milling, homogenization, drying, material distribution, and heat treatment. The amount of lepidolite filter mud in the present invention accounts for more than 90%, which is a whole waste utilization and can achieve high-value utilization of bulk lepidolite filter mud. The present invention uses a composite foaming agent combined with a foaming technology and has the advantages of rapid foaming and controllable pore size compared with a single foaming agent. The ecological foamed ceramic prepared by the present invention meets the industrial standard of CJ/T 299-2008 “Artificial ceramic filter material for water treatment” and has potential application value in domestic sewage treatment.