Application of electromagnetic flow meter in ore slurry with high solid content

Abstract: The application information of electromagnetic flow meter in ore slurry with high solid content is provided by excellent flow meter and flow meter manufacturers and quotation manufacturers. Abstract: Electromagnetic flowmeters are widely used in the advantages of smooth straight pipes, strong corrosion resistance, and the fact that the measured volume flow is not significantly affected by fluid density, viscosity, temperature, pressure and electrical conductivity. in various industrial production. exist. For more flowmeter manufacturers to select models and price quotations, you are welcome to inquire. The following is the application article details of electromagnetic flowmeters in ore slurry with high solid content. Electromagnetic flowmeters are widely used in various types of electromagnetic flowmeters because their measurement channels are smooth straight pipes, with strong corrosion resistance, and the measured volume flow is actually not significantly affected by fluid density, viscosity, temperature, pressure and conductivity. in industrial production. In this project, the electromagnetic flowmeter has been partially changed to make it more effective in the production control process, and at the same time, the reliability of the equipment operation has been improved. Keywords: Electromagnetic flowmeter lining material Solid content Ore slurry 1 Overview With the rapid development of industrial automation, various smart meters are also playing an increasingly important role in industrial design. In modern industrial production, the application of intelligent systems is more and more extensive, which also reduces the possibility of artificial problems in production. However, the requirements for the accuracy and operability of various instruments have also increased. The application of electromagnetic flowmeter in the flow rate of ore liquid with high solid content in a certain stone coal extraction project of vanadium pentoxide, the problems and their solutions are discussed as follows. 2. Brief introduction of technological process This project is a comprehensive utilization project of stone coal. The existing vanadium extraction process produces a large amount of waste residue. Its main component is silicon dioxide, but it contains a large amount of vanadium resources, and the utilization rate of vanadium resources is low. At the same time, the alkali content in the waste residue is relatively high. If the waste residue is randomly stacked, it is easy to cause environmental pollution. The biggest feature of this project is that the secondary vanadium extraction slag in the existing vanadium extraction process is used as the main raw material for the preparation of precipitation silica, and the silicon resources in the waste residue are fully utilized. It creates a new economic growth point for the enterprise, and at the same time solves the waste of vanadium resources and environmental pollution caused by the existing vanadium extraction production. In addition, the project uses the waste heat generated in the decarbonization process of the existing vanadium extraction production line as a heating heat source , replacing the traditional method of using bituminous coal as the main fuel, that is, the waste heat generated in the production has been effectively and reasonably used, and the fuel cost generated has been further reduced, achieving the purpose of energy saving and emission reduction, comprehensive utilization of resources, and the process flow. The block diagram is as follows. In the process of slurry preparation, a certain amount of sodium hydroxide needs to be added, so that the vanadium in the ore can be dissolved in the alkaline solution as much as possible, and the solid content in the prepared slurry is relatively high, about 50%. To stabilize operation and product quality, it is necessary to accurately measure the amount of slurry added to the dissolving tank. And through the DCS control system to control the valve opening. to ensure stable flow. This puts forward high requirements for the anti-corrosion, anti-corrosion and precision of the flowmeter. This paper mainly expounds the correct selection of flowmeter in this project and the use of electromagnetic flowmeter in high solid content slurry. (Figure block diagram of comprehensive utilization process flow of stone coal) 3. Selection method of flowmeter In industrial production, in the measurement of the four thermal parameters of temperature, pressure, flow rate and liquid level, it is generally believed that the flow measurement should achieve the expected accuracy and reliability. is the hardest. This is related to the provision of the process database, the selection, installation and use of the instrument are correct, and of course the quality of the instrument itself. When choosing a flow measuring instrument, the main consideration is the suitability of the process medium and application conditions, as well as the scale, function, accuracy and economy of the instrument. Electromagnetic flowmeter is a kind of instrument for measuring conductive liquid based on Faraday's law of electromagnetic induction. From its working principle, it is in line with the conditions of the alkaline solution with high solid content proposed by this project for the flowmeter. 4 In this project, the problems and solutions for the selection of electromagnetic flowmeters are discussed. 4.1 The working principle of electromagnetic flowmeters The electromagnetic flowmeter is a kind of instrument for measuring the conductivity of liquids based on Faraday's law of electromagnetic induction. That is to say, when the conductor cuts the magnetic field lines in the magnetic field, an induced potential is generated in the conductor, and the magnitude of the induced potential is proportional to the magnetic induction intensity and the strength of the fluid cutting magnetic lines of force. 4.2 Advantages and disadvantages of electromagnetic flowmeters 4.2.1 Advantages of electromagnetic flowmeters (1) The measurement channel is a smooth straight pipe, which will not be blocked. It is suitable for measuring liquid-solid two-phase fluids containing solid particles, such as pulp, mud, sewage, etc. . (2) No pressure loss caused by flow detection. (3) The measured volume flow is actually not significantly affected by fluid density, viscosity, temperature, pressure and conductivity. (4) The flow range is large,Wide caliber range. (5) Corrosive fluids can be applied.

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