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Diamond tool bit recovery processing method

A technology of diamond cutter head and processing method, which is applied in the field of diamond cutter head recycling and processing, can solve the problem of ineffective separation of diamonds, etc., achieve the effect of low labor intensity in production and increase economic value

Active Publication Date: 2017-05-10
JIANGHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the existing waste diamond bit treatment method cannot effectively separate the diamond, tungsten carbide particles and valuable metals such as copper and iron in the waste diamond bit, the embodiment of the present invention provides a diamond bit recycling method. Approach

Method used

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Embodiment 1

[0031] figure 1 It is a flow chart of the diamond cutter head recovery treatment method provided by the embodiment of the present invention, see figure 1 , this treatment method is suitable for copper-iron-based diamond cutter head, the diamond cutter head mainly contains copper, iron, artificial diamond, in addition, also contains a small amount of tungsten carbide, zinc, nickel, cobalt, wherein, the mass fraction of main components includes: Cu 20-70%, Fe 20-80%, artificial diamond 0.5-6%, the treatment method includes:

[0032] Step 101: According to the mass ratio of the diamond cutter head to the first leaching solution is 1:2.4-3.5, add the cleaned diamond cutter head to the first leaching solution, and react in the first copper melting kettle, the reaction temperature is 80- 90°C, air is continuously fed during the reaction process, and the first leachate contains 5-15g / L sulfuric acid;

[0033] Step 102: When fine powdery sponge copper appears in the first leaching s...

Embodiment 2

[0061] In this embodiment, the mass percentages of the main components of the diamond cutter head used are: 23.50% Cu, 56.34% Fe, and 0.56% synthetic diamond. The sulfuric acid used is industrial grade sulfuric acid, wherein the mass fraction of sulfuric acid is greater than 98%.

[0062] In this embodiment, the mass percentages of the main components of the diamond cutter head used include: Cu is 23.50%, Fe is 56.34%, and artificial diamond is 0.56%, which also contains a small amount of metals such as tungsten carbide and nickel, cobalt, and zinc. Since the contents of tungsten carbide and metals such as nickel, cobalt, and zinc are extremely small, no detailed description is given here. The sulfuric acid used in the treatment process is industrial grade sulfuric acid, wherein the mass fraction of sulfuric acid is greater than 98%.

[0063] First prepare industrial-grade sulfuric acid into a dilute sulfuric acid solution with a mass fraction of 5-15g / L as the first leaching...

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Abstract

The invention discloses a diamond tool bit recovery processing method and belongs to the technical field of wet metallurgy. The processing method comprises steps as follows: a diamond tool bit is added to first leaching liquor in the mass ratio of the diamond tool bit to the first leaching liquor being 1:(2.4-3.5) to react, air is pumped into the first leaching liquor continuously, and sulfuric acid with the concentration being 5-15 g / L is contained in the first leaching liquor; when spongy copper occurs in the first leaching liquor, solid-liquid separation is performed, a first insoluble substance and first filtrate are obtained, and the first filtrate is a solution containing ferrous sulfate; the first insoluble substance and sufficient second leaching liquor react, air is introduced continuously until the reaction ends, solid-liquid separation is performed, a second insoluble substance and second filtrate are obtained, the second filtrate is a solution containing copper sulfate, and the second leaching liquor contains sulfuric acid with the concentration being 100-150 g / L; 20 parts of deionized water and 0.001-0.010 parts of kerosene are added to one part of the second insoluble substance by mass, and diamond is separated out with a flotation method.

Description

technical field [0001] The invention relates to the technical field of hydrometallurgy, in particular to a method for recovering and treating diamond cutter heads. Background technique [0002] The diamond segment is the main body of the cutting saw blade and is widely used in the cutting of hard and brittle materials, such as jewelry, stone, ceramics, hard alloys, etc. Usually, the diamond cutter head is made of fine granular diamond and tungsten carbide as the abrasive, and the matrix material with copper and iron as the main elements is made by pressing and sintering. Since the diamond, tungsten carbide particles and valuable metals such as copper and iron contained in the discarded diamond segment have great economic value, it is of great economic benefit to recycle various metals, diamond and tungsten carbide particles. [0003] At present, the domestic disposal methods of waste diamond segments mainly include hydrochloric acid-hydrogen peroxide method, hydrochloric ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/28C01G49/14C01B32/949C01G3/10C22B7/00C22B15/00C25C1/12
CPCC01G3/10C01G49/14C22B7/007C22B15/0071C22B15/0089C25C1/12Y02P10/20
Inventor 薛平陈晓芳
Owner JIANGHAN UNIVERSITY
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