The main method for extracting zinc from flue ash is solvent extraction. The specific process flow is: leaching-purification-extraction-stripping-electrolysis.
In the leaching stage, acid leaching is generally selected, mainly using sulfuric acid as the leaching agent. After leaching, the purification stage requires precipitation to remove impurities in the leaching solution, and then the extraction operation is carried out after the impurities are removed. The first two stages are relatively simple, and extraction and stripping are more critical.
Extraction and stripping are the key stages of extracting zinc from flue ash, so the operation of this section is very critical and directly related to the final extraction effect. The extraction section and the stripping section use centrifugal extraction equipment. Multi-stage extraction or single-stage extraction is selected according to the conditions of the feed liquid. Generally, in order to ensure the extraction effect, multi-stage continuous extraction is mostly used. Compared with traditional extraction equipment, the effect of centrifugal extraction is much better. Because the centrifugal extractor uses a motor to drive the drum to rotate at high speed, two liquids with different densities and immiscible with each other complete the mixing and mass transfer under the action of the shear force generated by the rotation of the drum or blades, and are quickly separated under the centrifugal force generated by the high-speed rotation of the drum.
CWL-M centrifugal extractor is developed and produced by Zhengzhou Tiei Extraction. Tiei Extraction produces many types of CWL-M centrifugal extractors, which are divided into experimental extractors and industrial extraction equipment. Generally, in order to ensure the efficiency of extraction, a test will be done before the equipment is selected. Zhengzhou Tiei Extraction has its own professional laboratory that can be provided to customers for experiments. The experiment uses CWL50-M, a small extraction equipment, which has good experimental results, fast response, and is easy to operate.
Advantages of Centrifugal Extractor for Zinc Extraction from Flue Ash
- Centrifugal extractor has a compact structure, convenient maintenance and simple operation.
- Centrifugal extractor has a large processing capacity and low power consumption, which reduces the overall operating cost
- There are many equipment models, and the equipment can be selected according to the processing capacity. The material can be customized and has corrosion-resistant materials
- Centrifugal extractor has a high extraction rate and good extraction effect.
Welcome contact us for more details about Centrifugal Extractor.
Email: sales@tieiextraction.com
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