Thick foam, strong adhesion: how to achieve stable liquid level measurement in alumina weak filtration tank?
Date: 2025-11-05Read: 4
Aluminum oxide is an important inorganic compound processed from bauxite and mainly used for the production of electrolytic aluminum. The production process of alumina mainly includes Bayer process and sintering process. During the production process, bauxite is dissolved in alkaline solution, filtered, decomposed, crystallized, and finally calcined to form alumina. In this process, complex process conditions and medium characteristics impose strict requirements on measuring instruments.
Foam thick, strong adhesion
Measurement difficulties of alumina slurry
The measurement site this time is the material level measurement of the weak filter tank. The difficulty of measurement lies in the fact that the weak filtrate contains a high concentration of minerals,Serious adhesionThe container is equipped with agitation, which will form during the production processThick foam layer.
Foam layer causes measurement difficulties
Two other brands of measuring instruments were originally used on site, includingTop mounted radar level gaugeandSide mounted pressure transmitterHowever, these two instruments are subject to interference from medium adhesion and sedimentation at regular intervals, and in actual operationFrequent disassembly and cleaning are required.
Weak filtrate tank before renovation
At the same time, the measurement signals of the original instruments are unstable and the measurement results are inaccurate, which can easily cause errors in interlocking control,Causing the slurry to overflowTherefore, customers hope to have a more stable measurement solution that meets the requirements of minimal or no maintenance.
Based on the customer's needs and the installation conditions on site, VEGA measurement engineers have configured a weak filter tankVEGABAR PRO series pressure transmitterThis measurement solution has three advantages:
VEGA pressure transmitter
measurement processFree from foam and all parts in the containerThe impact.
VEGABAR pressure transmitterHigh temperature and overload resistance strengthWhen measuring pressure and liquid level of liquids and viscous media, accurate measurement can be ensured even if there is a sudden change in process temperature.
The liquid receiving part of the instrument adopts high-quality materials and optimized design,Resistant to alkaline solution, not easy to adhereIt can effectively solve problems such as frequent maintenance.
After more than half a year of operation observation after the renovation, it can be determined that the measurement results are stable and reliable in the long term, and the operation does not require maintenance, meeting the needs of customers.
In this case, VEGA measurement engineers fully utilized their technical advantages, combined with rich product selection, and provided customers with solutions based on on-site installation conditions, solving the measurement problem of adhesive media in mixing containers.
VEGA is a global manufacturer of level, limit, pressure, and density measuring instruments, and provides equipment and software for integrating instruments into process control systems. VEGA has over 2600 employees worldwide and has provided solutions to measurement challenges in various applications for over 60 years, including chemical and pharmaceutical equipment, food processing, drinking water supply, sewage treatment, landfill, mining, power generation, drilling platforms, ships, aviation, and more.