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Comprehensive resource recycling method for waste diamond tool

A diamond tool and recycling technology, applied in the direction of solid waste removal, etc., can solve the problems of low recycling efficiency and large waste of waste diamond tools, and achieve the effect of easy industrial scale production, simple process, and smooth and complete surface

Active Publication Date: 2011-09-28
GRIPM ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Aiming at the problems of low recovery efficiency and large waste of waste diamond tools in China, the present invention provides a comprehensive recycling method for waste diamond tools, which is characterized in that it includes the following steps:

Method used

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  • Comprehensive resource recycling method for waste diamond tool
  • Comprehensive resource recycling method for waste diamond tool
  • Comprehensive resource recycling method for waste diamond tool

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Effect test

Embodiment 1

[0029] figure 1 The technical roadmap adopted for the present invention; figure 2 It is the microscopic morphology of diamond particles recovered in the present invention. First prepare the mixed acid solution according to the volume concentration of concentrated sulfuric acid, concentrated hydrochloric acid and concentrated nitric acid being 0, 80% and 20% respectively; take 15kg of the mixed acid solution and slowly add it to the enamel reaction kettle with the same volume of deionized water as the mixed acid , take 1 kg of discarded diamond tools and slowly add them to the above reactor, heat the reactor to 40°C, keep the stirring speed at 50r / min, and bubbles will continue to emerge during the reaction process; after the discarded diamond tools are completely dissolved, put the The solid-liquid mixture is moved to a ceramic filter for filtration, and the undissolved solid particles are separated, and the solid particles are washed repeatedly with deionized water until th...

Embodiment 2

[0031] Firstly, the mixed acid solution is prepared according to the volume concentrations of concentrated sulfuric acid, concentrated hydrochloric acid and concentrated nitric acid being 30%, 40% and 30% respectively. Take 8kg of mixed acid solution and slowly add it to the enamel reaction kettle with the same volume of deionized water as the mixed acid, take 1kg of waste diamond tools and slowly add it to the above reaction kettle, heat the reaction kettle to 80°C, and stir at a speed of 200r / min , During the reaction process, there are constantly bubbles coming out. After the waste diamond tools are completely dissolved, move the solid-liquid mixture in the reactor to a ceramic filter to filter, separate the undissolved solid particles, and repeatedly wash the solid particles with deionized water. Wash until the pH value of the washing filtrate is 7. The washed solid particles were dried in an electric drying oven at a drying temperature of 150° C. and a drying time of 2 ho...

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Abstract

The invention belongs to the fields of comprehensive resource recycle and superfine metal pre-alloyed powder preparation, and particularly relates to a comprehensive resource recycling method for a waste diamond tool. The method comprises the following steps: firstly, reclaiming diamond and tungsten carbide grains from the waste diamond tool through acid dipping and filtering processes; and detecting components of leachate by adopting atomic absorption spectrum, adjusting the components and the concentration by adding corresponding soluble salt and deionized water into the leachate, and preparing superfine pre-alloyed powder through various non-ferrous metals in the mother solution by adopting a chemical coprecipitation-reduction process. The method can furthest reclaim the diamond and tungsten carbide grains from the waste diamond tool; the prepared superfine pre-alloyed powder can be directly applied to the production of the diamond tools; and the method avoids the complex metal ionseparation processes such as extraction and impurity removal and the like adopted in the traditional metal reclamation, has the characteristics of simple process, low cost and the like, and is easy for industrialized mass production.

Description

technical field [0001] The invention belongs to the field of resource comprehensive recovery and utilization and preparation of ultrafine metal pre-alloy powder, and in particular relates to a method for comprehensive recovery and utilization of waste diamond tools. Background technique [0002] In the "Eleventh Five-Year Plan" of our country, it is proposed to vigorously develop circular economy and build a conservation-oriented and environment-friendly society. For the non-ferrous metallurgy industry, no matter in terms of resources, energy, environment, etc., there is an urgent need to vigorously develop "secondary resources". [0003] The world's developed industrial countries attach great importance to the utilization of "secondary resources". Renewable resources have become the main raw materials of non-ferrous metals, and the secondary non-ferrous metal industry has become an independent industry. For example, in 2000, the world produced 8.16 million tons of secondar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/00B09B1/00B22F9/24C01B31/06
Inventor 刘宇慧汪礼敏张景怀王林山闫世凯
Owner GRIPM ADVANCED MATERIALS CO LTD
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