Method and apparatus for sorting particles with electric and magnetic forces

A magnetic separation and particle technology, applied in magnetic separation, chemical instruments and methods, Lorentz force separation, etc., can solve the problems that electrostatic technology cannot adapt to scale and limitations
CN1354694AInactive Publication Date: 2002-06-19艾克斯普技术公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
艾克斯普技术公司
Publication Date
2002-06-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

Disclosed is an apparatus and method for sorting particles. The apparatus includes a magnet mechanism(12)for separating particles with a magnetic force. The apparatus includes an electric mechanism including an electrode(22)disposed adjacent to the magnet mechanism for separating particles with a electric force. The apparatus includes a mechanism(26)for providing the particles to the magnet mechanism and the electric mechanism. The providing mechanism is engaged with the magnet mechanism and the electric mechanism. The magnet mechanism(12)acts as another electrode to create an electric field between the magnet mechanism(12)and the electrode(22). The method includes the steps of providing the particles to a magnet mechanism(12)and an electric mechanism, comprised of electrode(22)and magnet mechanism(12). Then there is a step of separating the particles with the magnetic force and the electric force, both acting simultaneously on the particles.
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Description

[0001] The present invention is based on the PMI-9760706 funding granted by the National Science Foundation, and is carried out with the support of the government. The government has certain rights in this invention. field of invention

[0002] The present invention relates to methods and apparatus for classifying particles. More specifically, the present invention relates to methods and apparatus for sorting particles using electrical and magnetic forces, said particles being charged by frictional and capacitive contact. Background of the invention

[0003] The present invention aims to separate particles with similar magnetic properties but different surface electrical properties. An example of commercial importance is the separation of unburned carbon from fly ash from fossil-fuel combustion. The triboelectric precipitant collects dry pulverized coal fly ash with an average particle size of about 10-30um to prevent its emission into the atmosphere. The fly ash is mainl...

Claims

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