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Cyclic utilization method of cutting fluid containing copper and nickel

A technology of cutting fluid and copper-nickel, which is applied in the field of recycling of cutting fluid, can solve the problems of complex cutting fluid treatment process and high treatment cost, and achieve the effect of small impact, high metal content and low moisture content

Pending Publication Date: 2020-07-10
HUACHEN ENVIRONMENTAL PROTECTION ENERGY (GUANGZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the technical problems of complex processing technology and high processing cost of the existing cutting fluid, and provides a recycling method for copper-nickel-containing cutting fluid

Method used

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  • Cyclic utilization method of cutting fluid containing copper and nickel
  • Cyclic utilization method of cutting fluid containing copper and nickel

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Effect test

specific Embodiment approach 1

[0015] Specific embodiment one: present embodiment is a kind of recycling method of copper-nickel cutting fluid, specifically carries out according to the following steps:

[0016] 1. Fix the membrane filter on the inner bottom of the reaction tank. The membrane filter is connected to the water inlet of the self-priming centrifugal pump through the water pipe, and the water outlet of the self-priming centrifugal pump is connected to the collection tank; the cutting fluid to be treated is added to the reaction tank and then add sodium sulfide or organic sulfide polymer chelating agent. After adding, the concentration of sodium sulfide or organic sulfide polymer hydrating agent in the reaction tank is 1g / L~3g / L, and then put it into the reaction tank Add polyacrylamide aqueous solution, the concentration of polyacrylamide in the reaction tank after adding is 10mg / L~15mg / L, turn on the stirrer in the reaction tank, the stirrer speed is 200r / min~400r / min, and the stirring time is ...

specific Embodiment approach 2

[0019] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the membrane filter described in step 1 is an ultrafiltration membrane, a microporous membrane, a nanofiltration membrane, a microfiltration membrane, a hollow fiber ultrafiltration membrane or Ceramic Membrane. Others are the same as the first embodiment.

specific Embodiment approach 3

[0020] Embodiment 3: This embodiment differs from Embodiment 2 in that: the pore diameter of the membrane wall of the membrane filter described in step 1 is 0.1 μm˜1 μm. Others are the same as in the second embodiment.

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Abstract

The invention relates to a cyclic utilization method of cutting fluid, in particular to a cyclic utilization method of cutting fluid containing copper and nickel, and aims to solve the technical problems of complex treatment process and high treatment cost of the existing cutting fluid. Copper ions and nickel ions in the cutting fluid form precipitates through the chemical agent sulfide and the organic sulfide polymer griddling agent, the turbidity degree of the cutting fluid is reduced, the copper ions, the nickel ions and the metal chips in the cutting fluid are removed, and the precipitatesare separated from the cutting fluid through membrane filtration; metal precipitates generated by the medicament are low in water content and high in metal content, and metal substances in the metalprecipitates are recycled; after membrane filtration, the cutting fluid can be clarified and transparent, the recovery rate of the cutting fluid is high, the average recovery rate is 96%, the influence on the properties of the cutting fluid is small, the reusability is achieved, the discharge amount and the use amount of the cutting fluid are reduced and the cost is reduced. The method is appliedto recovery of the cutting fluid.

Description

technical field [0001] The invention belongs to a method for recycling cutting fluid. Background technique [0002] Cutting fluid can be divided into water-based cutting fluid and oil-based cutting fluid. Because water-based cutting fluids are flame retardant and easy to dilute, the machining industry often uses water-based cutting fluids to reduce the cutting force generated by cutting, cutting, grinding, etc. in the process of mechanical production and manufacturing, and reduce the cutting temperature. With the prolongation of the use time of cutting fluid, the quality of water-based cutting fluid deteriorates, the content of metal ions increases, and the use effect decreases significantly. Therefore, it is necessary to replace the cutting fluid regularly, which leads to an increase in the demand for cutting fluid and the treatment of cutting waste fluid. The volume also increased accordingly. [0003] The treatment process of cutting waste fluid is usually divided into ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M175/00C10M175/06C22B7/00C22B15/00C22B23/00C10N40/22
CPCC10M175/0016C10M175/06C22B7/006C22B15/0091C22B23/0469Y02P10/20
Inventor 魏利赵云发李春颖潘春波欧阳嘉魏东张昕昕范晓刚
Owner HUACHEN ENVIRONMENTAL PROTECTION ENERGY (GUANGZHOU) CO LTD
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