Method for recovering diamond by gas-liquid-solid phase method

Abstract

The invention discloses a method for recovering diamond by a gas-liquid-solid phase method, and the method is used for solving the problem of wastewater discharge in the prior art. The method is characterized by adopting gas-liquid-solid phase reaction, namely using acid liquor generated by dissolving chlorine in water to corrode diamond wastes. A gas-liquid-solid phase reaction device is formed by a reaction kettle (6), a kettle cover (2) with a sealing washer, a chlorine distributor (5), and the like, wherein the reaction kettle (6) is made from acid and heat resistant plastics; the kettle bottom is made into a taper; a drain pipe with a drain valve (7) is installed at the lowest part of the kettle bottom; a feed pipe with a feed valve (1) is arranged beside the kettle cover (2) above the reaction kettle (6); an intake pipe with one end connected with a chlorine valve (3) and the other end inserted into the kettle bottom to be connected with the chlorine distributor (5) is arranged at the lateral upper side. The method has the beneficial effects that the method avoids bringing plenty of water by purchasing acid liquor in the original process; the water in the production process can be recycled and no wastewater is discharged.

Description

1. Technical field [0001] The invention belongs to the fields of waste recycling and environmental protection, and relates to the recovery of diamond by a gas-liquid-solid phase method. 2. Background technology [0002] The chemical composition of diamond is C, which is the same polymorphic variant of carbon as graphite, and it is the hardest substance in nature. According to statistics, about 70% of industrial diamonds in the world are used to manufacture stone processing tools, of which diamond circular saw blades account for the vast majority. In our country, 76% of the total diamond is used to make diamond saw blades. When diamond saw blades are in use, in order to avoid damage to the substrate, about 10-20% of the cutting head of each saw blade cannot be used up. In addition, diamond saw blade manufacturers will produce a certain amount of defective products in the process of producing diamond saw blades. In these scrap saw blades, in addition to containing expensive...

AI Technical Summary

Problems solved by technology

If it is discharged directly, it will seriously pollute the water body. If it is evaporated and concentrated to extract metal salts, it will produce a large amount of evaporative and condensed wastewater, which will also pollute the environment.

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