Functional material prepared from copper flotation tailings and preparation technology of functional material

A technology of functional materials and tailings, which is applied in the field of comprehensive utilization of solid waste resources, can solve the problems of low utilization of resources and difficult disposal of copper tailings, and achieve the effect of increasing specific surface area and porosity, and improving adsorption capacity

Active Publication Date: 2018-08-03
CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the current problems of difficult disposal of copper tailings and low degree of resource utilization, the present invention proposes to use copper tailings as raw material, process copper tailings through particle size screening, surface activation and lanthanide loading, and process the copper tailings Made into a functional material with good phosphorus adsorption performance, so as to realize the harmless treatment and efficient resource utilization of copper tailings

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  • Functional material prepared from copper flotation tailings and preparation technology of functional material

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Embodiment 1

[0018] A process for preparing functional materials using copper-selected tailings, comprising the steps of:

[0019] A certain amount of copper tailings was taken, and the particle size was screened by cyclone classification. By adjusting the working parameters of the hydrocyclone classifier, the proportion of particles below 37 μm in the copper tailings accounted for 89%. Take 10g of fine-grained copper tailings after cyclone classification, add it to 150mL NaoH solution of 1mol / L, stir well, filter and wash until the eluate is neutral, and dry. Disperse the fine-grained copper tailings after surface activation by alkali treatment in 100mL deionized water, stir well and slowly add a certain amount of La(NO 3 ) 3 ·6H 2 The isopropanol solution with O content (with the addition ratio of fine-grained copper tailings after alkali treatment and surface activation is 5mmol / g), vigorously stirred to obtain a uniform mixed solution; add 1mol / L NaOH solution until the mixed solutio...

Embodiment 2

[0021] A process for preparing functional materials using copper-selected tailings, comprising the steps of:

[0022] A certain amount of copper tailings is taken, and the particle size is screened by cyclone classification, and the proportion of particles below 37 μm in the copper tailings is controlled to be 100% by adjusting the working parameters of the hydrocyclone classifier. Take 10g of fine-grained copper tailings after cyclone classification, add it to 150mL of 1mol / L HCl solution, stir well, filter and wash until the eluate is neutral, and dry. Disperse the fine-grained copper tailings after acid treatment and surface activation in 100mL deionized water, stir well and slowly add a certain amount of La(NO 3 ) 3 ·6H 2 Isopropanol solution with O content (with the addition ratio of fine-grained copper tailings after acid treatment and surface activation is 10mmol / g), stir vigorously to obtain a uniform mixed solution; add 1mol / L NaOH solution until the mixed solution ...

Embodiment 3

[0024] A process for preparing functional materials using copper-selected tailings, comprising the steps of:

[0025] A certain amount of copper tailings is taken, and the particle size is screened by cyclone classification, and the proportion of particles below 37 μm in the copper tailings is controlled to 85% by adjusting the working parameters of the hydrocyclone classifier. Take 10g of fine-grained copper tailings after cyclone classification, add it to 150mL NaOH solution of 1mol / L, stir well, filter and wash with water until the eluate is neutral, and dry. Disperse the fine-grained copper tailings after surface activation by alkali treatment in 100mL deionized water, stir well and slowly add a certain amount of La(NO 3 ) 3 ·6H 2 The isopropanol solution with O content (with the addition ratio of fine-grained copper tailings after alkali treatment and surface activation is 0.5mmol / g), vigorously stirred to obtain a uniform mixed solution; add 1mol / L NaOH solution until ...

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Abstract

The invention provides a functional material prepared from copper flotation tailings and a preparation technology of the functional material to solve the problems that the resource utilization degreeof copper flotation tailings is very low and stacking disposal can damage ecological environment and threaten production safety. The technology comprises key processes as follows: (1) performing particle size screening on the copper flotation tailings to remove coarse-grained tailings; (2) performing surface activation on fine-grained tailings obtained after particle size screening; (3) performinglanthanide series loading on the fine-grained tailings obtained after surface activation treatment. The prepared functional material has good adsorption removal capacity for phosphate in water, can be applied to phosphorus removal purification of natural water and different kinds of wastewater and has greater actual application prospects and commercial development value. The harmless treatment and resource utilization of the copper flotation tailings are realized through preparation of the functional material, waste is changed into wealth, and the basic strategy of waste resource regenerationand development of circle economy is conformed.

Description

technical field [0001] The invention relates to the field of comprehensive utilization of solid waste resources, in particular to a functional material prepared by using copper-selected tailings and a preparation process thereof. Background technique [0002] Copper beneficiation tailings are wastes produced after copper ore beneficiation by flotation process. Areas with developed copper industry in China produce a large amount of copper tailings every year, and the disposal of copper tailings has always plagued local copper mining enterprises. [0003] At present, three methods are generally adopted: goaf backfilling, comprehensive utilization of resources and stacking of tailings ponds to dispose of copper beneficiation tailings. However, backfilling of goafs is limited by terrain, and tailings stacking will threaten the ecological environment and production safety. Existing The efficiency of comprehensive utilization of resources is low. Therefore, to solve the problem ...

Claims

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Application Information

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IPC IPC(8): B01J20/02B01J20/30C02F1/28C02F101/10
CPCB01J20/02B01J2220/42B01J2220/4806C02F1/281C02F2101/105
Inventor 黄茁林莉金海洋李青云刘敏
Owner CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION
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