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Method for preparing copper crude ore from copper-containing waste water

A waste water and coarse ore technology, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve problems such as environmental pollution, achieve the effects of avoiding secondary pollution, stabilizing the structure, and realizing comprehensive utilization

Inactive Publication Date: 2016-09-28
JIANGSU LONGCHANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The copper content in copper-containing wastewater is as high as 0.1-35g / L, which greatly exceeds the sewage discharge standard (GB8978-1996). If it is discharged directly, it will seriously pollute the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The method for preparing copper rough ore from copper-containing wastewater in this embodiment takes copper in copper-containing wastewater as the measurement standard, and puts in calcium chloroaluminate according to the mass ratio of copper:calcium chloroaluminate=1:8, and the calcium chloroaluminate in the calcium chloroaluminate The calcium-aluminum ratio is 3:1, react at room temperature for 8 hours, separate the precipitated calcium cuproaluminate, and then filter the precipitated calcium cuproaluminate, and then dry the filter cake at 400°C to obtain Copper crude ore, wherein the copper content in the copper crude ore is 16.5%.

Embodiment 2

[0016] The method for preparing copper coarse ore from copper-containing wastewater in this embodiment takes copper in copper-containing wastewater as the measurement standard, and puts in calcium chloroaluminate according to the mass ratio of copper: calcium chloroaluminate=1: 18, and the calcium chloroaluminate in the calcium chloroaluminate The calcium-aluminum ratio is 3:1, react at room temperature for 2 hours, separate the precipitate calcium cuproaluminate, and then filter the precipitate, and dry the filter cake at 100°C after the press filter to obtain Copper crude ore, wherein the copper content in the copper crude ore is 18.5%.

Embodiment 3

[0018] The method for preparing copper rough ore from copper-containing wastewater in this embodiment takes copper in copper-containing wastewater as the measurement standard, and puts in calcium chloroaluminate according to the mass ratio of copper:calcium chloroaluminate=1:12, and the calcium chloroaluminate in the calcium chloroaluminate The calcium-aluminum ratio is 3:1, react at room temperature for 5 hours, separate the precipitated calcium cuproaluminate, and then filter the precipitated calcium copper-aluminate, and then dry the filter cake at 250°C to obtain Copper rough ore, wherein the copper content in the copper rough ore is 23.5%.

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PUM

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Abstract

The invention relates to a method for preparing copper crude ore from copper-containing waste water. The method comprises, based on copper-containing waste water copper weight, putting calcium chloroaluminate into the copper-containing waste water according to a mass ratio of copper: calcium chloroaluminate of 1: 8-18, carrying out a reaction process at the normal temperature for 2-8h, carrying out press filtration, and drying the filter cake at a temperature of 100-400 DEG C to obtain copper crude ore. The method utilizes a calcium chloroaluminate treatment agent to treat copper-containing waste water and the treated solid slag is subjected to press filtration and drying to form a desired product. Through a chemical bond, the desired product has a stable structure, prevents leaching loss and secondary pollution, solves the problems of heavy metal waste water treatment and realizes comprehensive utilization of copper-containing waste water.

Description

technical field [0001] The invention belongs to the technical field of waste water recovery and utilization in environmental protection, and in particular relates to a method for preparing copper rough ore from copper-containing waste water. Background technique [0002] Copper-containing wastewater is a type of wastewater produced by metallurgy, electronics and other industries, mainly including printed circuit board etching wastewater, electroplating wastewater, etc. The copper content in copper-containing wastewater is as high as 0.1-35g / L, which greatly exceeds the sewage discharge standard (GB8978-1996). If it is discharged directly, it will seriously pollute the environment. Therefore, necessary measures must be taken to treat copper-containing wastewater. At present, the treatment methods for copper-containing wastewater mainly include chemical method, ion exchange method, evaporation concentration method, adsorption method, membrane separation technology and biologi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F101/20
CPCC02F1/001C02F1/5236C02F9/00C02F2101/20
Inventor 张剑宇赵雪松王映辉
Owner JIANGSU LONGCHANG CHEM
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