Method for preparing filtering material from copper tailings and application

A filter material, copper tailings technology, applied in the application, filtration separation, separation method, etc., can solve the problems of chronic soil and groundwater pollution, secondary pollution, waste earth and stone, etc., achieve uniform and stable filter aperture, reduce pollution, high potency effect

Inactive Publication Date: 2020-10-13
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, concrete blocks are simply used as building materials, which will produce waste earth and stone, and even leach heavy metals from antimony tailings under the washing of rainwater, causing chronic pollution to soil and groundwater
[0005] In 2012, 201210338851.8 disclosed a preparation method of using silicate particles in tailings to produce flexible anti-seepage materials. Using the electronic adsorption characteristics of the surface of silicate particles in tailings and the stable water repellency of alkane organic compounds, these hydrophobic Water-based organic macromolecules are mixed with silicate particles, adsorbed and embedded on the surface of silica particles, so that the surface of silica particles has the effect of repelling water molecules, so the alkane organic molecules are complexed by covalent bonds Inlaid on the surface of silicate mineral particles, the granular anti-seepage material can be obtained; but the granular anti-seepage material needs a certain foundation to be constructed as an anti-seepage layer, and when the foundation is damaged, secondary pollution may occur

Method used

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  • Method for preparing filtering material from copper tailings and application
  • Method for preparing filtering material from copper tailings and application
  • Method for preparing filtering material from copper tailings and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: The method for preparing filter material by using copper tailings and treating sludge with a moisture content of 99% are as follows:

[0036] The chemical composition of copper tailings is shown in the table:

[0037]

[0038] (1) Copper tailings pretreatment: Wash the tailings repeatedly with deionized water until the pH rises to 7; dry the tailings at 105°C, crush and sieve until the particle size is less than 0.1mm, and set aside;

[0039] (2) Raw meal preparation: Mix and stir the pretreated tailings, water, modifier, and binder to make a raw meal with a moisture content of 20%;

[0040] (3) Raw material injection molding: Pour the stirred raw material into the installed plate-shaped steel formwork, and die-cast it with a pressure of 2MPa;

[0041] (4) Roast raw materials to prepare new energy-saving and environment-friendly filter materials.

[0042] The specific content is: wash the copper tailings repeatedly with deionized water, so that the pH r...

Embodiment 2

[0047] Embodiment 2: The method of using copper tailings to prepare filter materials and the treatment of tailings with a pulp concentration of 10-15%

[0048] The chemical composition of copper tailings is shown in the table:

[0049]

[0050] Wash the copper tailings repeatedly with deionized water until the pH rises to 8, and remove the water-soluble substances and suspended solids in the tailings gravel; dry the tailings at 110°C to ensure that water is removed while removing Other substances that are easy to evaporate and remain on the surface of the tailings, avoid affecting the combination of synthetic materials at high temperatures; crush and screen the tailings, and use high-strength mechanical action to break its crystal lattice; then pretreated tailings Powder, water, sodium sulfate and carbon powder (the amount of sodium sulfate and carbon powder added is 3% of the mass of the tailings powder), clay (the amount added is 15% of the mass of the tailings), etc. are...

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Abstract

The invention discloses a method for preparing a filtering material from copper tailings. The method comprises the following steps of: mixing pretreated copper tailings, water, a modifier and an adhesive to prepare a raw material with the water content of 10-30%; and performing injection molding and roasting on the raw material so as to obtain the filtering material. The energy-saving and environment-friendly filter material is prepared on the premise of solving the problems of low comprehensive utilization rate of metal tailings and the like, and is applied to filtration and dehydration of mine concentrates and solid-liquid separation in the industries of coal, fine chemical engineering, papermaking, pharmacy, chemical fibers, foods, environmental protection and the like, so that the resource utilization of the tailings is efficiently realized.

Description

technical field [0001] The invention belongs to the field of environmental functional materials, and in particular relates to a method and application of using tailings to prepare energy-saving and environment-friendly filter materials. Background technique [0002] Mineral resources are irreplaceable and non-renewable. With the increasing demands of social development and the continuous development of mineral resources, mineral resources are facing a crisis of depletion. More than 85% of my country's energy and raw materials depend on mineral resources. Due to the large number of refractory minerals in my country, the level of production and processing technology and the low rate of development and utilization, the loss and waste of mineral resources are serious, and a large number of tailings are generated. The comprehensive utilization rate of metal tailings in my country is less than 10%, which is far from the 60% utilization rate of foreign tailings. A large number of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/20B01D29/03C04B38/02C04B33/132C04B33/32
CPCB01D29/03B01D39/2075C04B33/1324C04B33/32C04B38/02C04B2235/3201C04B2235/349C04B2235/422C04B2235/6562C04B2235/6567C04B2235/96C04B2235/9669Y02P40/60
Inventor 瞿广飞李江松王晨鹏刘亮亮
Owner KUNMING UNIV OF SCI & TECH
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