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Zinc-containing waste liquid treatment process

A waste liquid treatment and process technology, applied in the chemical industry, can solve the problems of low zinc recovery rate, long process, high energy consumption, etc., and achieve the effect of convenient operation and favorable recovery

Inactive Publication Date: 2018-05-15
CHINA ENFI ENGINEERING CORPORATION
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the above method has problems such as long process, high energy consumption and low zinc recovery rate.

Method used

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  • Zinc-containing waste liquid treatment process
  • Zinc-containing waste liquid treatment process

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Embodiment Construction

[0023] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0024] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner" and "outer" are based on those shown in the accompanying drawings. Orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specifi...

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Abstract

The invention discloses a zinc-containing waste liquid treatment process. The zinc-containing waste liquid treatment process comprises the steps of S1, adding a neutralizer into zinc-containing wasteliquid to precipitate impurities and to form a waste residue and zinc-rich ore pulp; and S2, separating the zinc-rich ore pulp from the waste residue by adopting a supergravity grading device. According to the zinc-containing waste liquid treatment process, the zinc-rich ore pulp and the waste residue can be separated through the supergravity grading device, so that valuable metal zinc in the zinc-containing waste liquid can be recycled, and the method is convenient to operate.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a process for treating zinc-containing waste liquid. Background technique [0002] In related technologies, in zinc smelters, after sodium and magnesium salts are leached into the system, they cannot be removed by general purification methods. The continuous accumulation of sodium and magnesium ions in the solution increases the density of the solution, increases the viscosity of the solution, increases the resistance of the electrolyte, and reduces the current efficiency of zinc electrowinning. [0003] At present, the method of opening sodium and magnesium plasma in zinc smelters is generally used to neutralize the waste electrolyte, and the mixed slag of zinc hydroxide and calcium sulfate is sent to the rotary kiln or fuming furnace for volatilization, and then the zinc is recovered in the form of zinc oxide to neutralize the waste liquid Send sewage treatment. How...

Claims

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Application Information

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IPC IPC(8): C22B19/30C22B19/20C22B3/46
CPCC22B19/26C22B19/30Y02P10/20
Inventor 孙文亮孙宁磊王霄刘苏宁殷书岩彭建华
Owner CHINA ENFI ENGINEERING CORPORATION
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