A rare earth-loaded functional material prepared from rare earth tailings and its preparation process

A technology for functional materials and rare earth tailings, applied in other chemical processes, alkali metal oxides/hydroxides, inorganic chemistry, etc., can solve the problem of difficulty in resource utilization of rare earth tailings, and achieve the effect of reducing environmental hazards

Inactive Publication Date: 2016-08-17
INNER MONGOLIA UNIVERSITY
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Problems solved by technology

[0003] Aiming at the current problem that rare earth tailings are difficult to achieve resource utilization, this paper proposes a technical route for preparing granular rare earth-loaded functional materials from rare earth tailings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Take 500 g of rare earth tailings, put the rare earth tailings particles into a ball mill, run it at 300 rpm for 15 minutes, and take out the obtained powder. Mix the powder, rice husk ash, and water in a weight ratio of 20:1:3, and stir evenly to make a slurry. The slurry is made into balls with a diameter of 10-15mm by using a ball forming disc. The pellets are put into a muffle furnace for sintering, the sintering temperature is 1000°C, and the temperature is kept for 10 minutes. Put the obtained rare earth tailings ceramsite into a closed heatable reaction kettle, and add NaOH solution with a concentration of 1mol / L, and the solid-liquid ratio is 1 / 5. The solid-liquid mixture in the kettle was stirred for 3 minutes, then the reaction kettle was heated to 100° C., and kept at this temperature for 5 hours. After the reaction is completed, solid-liquid separation is achieved by filtration, and the obtained solid-phase product is washed with water for 3 times, which i...

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Abstract

Aiming at the dilemma that the degree of resource utilization of rare earth tailings in my country is very low and the value of resource products is not high, the invention proposes to use the tailings as the main raw material to prepare granular rare earth-loaded functional materials. The key technical process mainly includes: (1) preparation of rare earth tailings ceramsite; (2) zeolite process of ceramsite; (3) zeolite ceramsite rare earth loading process. The prepared porous granular rare earth-loaded functional material contains developed pore structure and rare earth functional components, and has the advantages of large specific surface area, strong adsorption capacity, and easy solid-liquid separation.

Description

technical field [0001] The invention relates to a porous granular rare-earth-loaded functional material with rare-earth tailings as the main raw material and a preparation method thereof, belonging to the field of comprehensive utilization of environmental functional materials and solid waste resources. It belongs to the high value-added resource utilization technology of rare earth tailings. The prepared granular rare earth-loaded functional material has high-efficiency removal ability for pentavalent arsenic ions in water, and is easy to realize solid-liquid separation. Background technique [0002] Rare earth tailings are wastes that are discharged to tailings ponds after mechanical washing using a certain process in mine concentrators. They are the main component of solid waste in the rare earth industry. Dozens of tons of tailings are discharged for every 1 ton of rare earth concentrate produced. At present, the comprehensive utilization of rare earth tailings in my c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/18B01J20/28B01J20/30C04B38/06
Inventor 王川杨双
Owner INNER MONGOLIA UNIVERSITY
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