In strengthening process inspection, emphasis is placed on controlling the quality of rotating parts to ensure their consistency and stability. The use of professional separation machinery product testing center, the key parts of the coaxiality, dynamic balance, surface accuracy and other detailed testing, excluding unqualified products, strengthen product quality.

According to the national standard JB/T 11095-2011 "Centrifugal extractor Technical conditions", each centrifugal extractor is tested one by one, and the original data is recorded and archived to form an inspection report.

The centrifugal extraction system with more than 100 stages involves multiple processes, multiple equipment and multiple parameters, and the complexity of the system is high. Centrifugal extraction equipment belongs to professional equipment, its technical parameters and operating parameters need to cooperate with the process. Only by combining design calculation and engineering data with application experience, combined with the actual situation of the site to adjust, can the best effect be achieved. In summary, the technical core of the centrifugal extraction system is manifested in the following aspects:

Perfect theoretical design and calculation are the premise of reliable operation of 100-stage centrifugal extraction system. Through the application of computer simulation software, the fluid state, phase equilibrium process and material transfer were simulated and analyzed according to extraction mechanism, fluid dynamics, chemical equilibrium and reaction dynamics, etc., which provided the basis for system design.

Fully consider the effects of variables in the system, such as material concentration gradient, material transfer, density change and gas resistance on centrifugal extraction separation. Through reasonable allocation of supporting facilities, optimization of inter-stage design and engineering experience data, the above negative effects can be eliminated.

Ensuring the continuity of production is the primary consideration for the reliability and flexibility of the system design. Through technical means such as advance intervention, data monitoring, fault warning and standby station switching, the whole system can run continuously under the premise of a certain failure rate.

Automatic intelligence is the basic guarantee of efficient operation of 100-stage centrifugal extraction system. Different from other general-purpose equipment, centrifugal extraction has unique characteristics, which need to be grasped. For example, the centrifugal extraction system should advance the heavy phase with higher density, and then enter the light phase with lower density through intelligent judgment. Before the phase equilibrium is established, the outgoing material needs to be collected and circulated to the raw material end, and the operation process should be intelligent. In addition, for the handling of unplanned downtime and parameter adjustment, the system needs to be able to respond quickly and achieve one-click operation to maximize productivity.

Typical application

The 100-stage centrifugal extraction system is playing an increasingly important role in the fields of nuclear power, rare earth, waste ternary battery recycling, metal extraction, modern biomedicine and new materials. For example, isotope enrichment requires cascades of more than 100 thousand levels, and step-by-step enrichment is the most effective alternative method for enrichment and separation of lithium isotopes, which has the advantages of good selectivity, continuous operation and easy automatic control. After the ternary waste batteries are extracted by centrifugal solvent, cobalt sulfate, nickel sulfate, manganese sulfate and battery grade lithium carbonate products can be produced, and anhydrous sodium sulfate by-products can be recovered to realize resource recycling, which brings obvious economic and social benefits. In the field of modern biomedicine, the purification of bioorganic acids such as lactic acid can be achieved by means of multistage tandem countercurrent, which has the advantages of high extraction rate and renewable use of extractants, thus reducing operating costs. In the field of rare earth industry and rare metals, green and efficient centrifugal extractors are gradually replacing traditional extraction tanks, greatly reducing the consumption of extractants and saving operating costs.