Device and method for dynamically detecting magnetic iron content in iron ores

Abstract

The invention relates to a device for detecting magnetic iron content in iron ores in mineral dressing industry, in particular to a device and a method for dynamically detecting the magnetic iron content in the iron ores. The device for detecting comprises an induction coil, an electric induction or magnetic induction current detecting instrument, an electromagnetic coil arranged around a conveying belt, a paramagnetic material frame, a detecting instrument connected with the induction coil, an electronic balance in the conveying belt, an interface module, a digital integrator and a computer, wherein the detecting instrument is either an electric induction current detecting instrument or a magnetic induction current detecting instrument; the interface module is an analog-digital conversion module; and the computer is an industrial control computer. The method for detecting comprises the following steps: dynamically detecting the electric induction or magnetic induction current of the induction coil, and measuring the weight of iron-containing magnetic minerals synchronously; establishing a corresponding relation curve set of the magnetic iron content and the detected electric induction or magnetic induction current of the iron ores; scheduling a detection cycle; and determining the magnetic iron content in the iron ores by the computer according to a mathematical model. The device for dynamically detecting utilizes electromagnetic induction principle, has simple structure and is easy to use in industrial fields.

Description

technical field [0001] The invention relates to a detection device for magnetic iron content of iron ore in mineral processing industry, in particular to a dynamic detection device and method for magnetic iron content of iron ore. Background technique [0002] At present, the main methods for determining the magnetic iron content of iron ore include chemical methods and electromagnetic induction methods. Chinese patents CN10626000 and 200420016292.X once disclosed two kinds of magnetic iron measuring instruments, one adopts electromagnetic induction method, and the other adopts mechanical method, but both methods are static measurement methods, which have certain limitations in practical application sex. No method for dynamically measuring the magnetic iron content of iron ore has been found in the existing literature, especially a dynamic detection device for measuring the magnetic iron content of iron ore on a belt conveying iron ore. Contents of the invention [0003]...

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Problems solved by technology

Chinese patents CN10626000 and 200420016292.X once disclosed two kinds of magnetic iron measuring instruments, one adopts electromagnetic induction method, and the other adopts mechanical method, but both methods are static measurement methods, which have certain limitations in practical application sex

In the existing literature, there is no method for dynamically measuring the magnetic iron content of iron ore, especially the dynamic detection device for measuring the magnetic iron content of iron ore on the iron ore belt.

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