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Method for volatilizing and extracting rubidium from spodumene tailings based on microwave field

A technology of spodumene and microwave field, which is applied in the direction of improving process efficiency and can solve problems that have not yet been utilized as resources

Active Publication Date: 2022-03-01
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Sichuan spodumene tailings are located in high-altitude and remote areas, and are mainly stored in tailings pools, and have not yet been utilized as resources
However, the existing treatment processes represented by the above patent documents do not involve the method of efficiently volatilizing and extracting rubidium from spodumene tailings based on microwave fields. At present, this field is still blank

Method used

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  • Method for volatilizing and extracting rubidium from spodumene tailings based on microwave field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The spodumene tailings prepared by spodumene flotation in a certain place in Sichuan were used as raw materials (tested: among them, Li 2 O 0.16%, Rb 2 O0.17%, Cs 2 O 0.011%, K 2 O 3.14%, Al 2 o 3 13.37%, SiO 2 77.62%, Fe 2 o 3 1.28%), weighing 1.0kg, ground to -74μm, accounting for more than 80%, composed of the following components: spodumene tailings: 70%; basalt fiber short waste silk: 15%; coal powder: 5%; water glass (Modulus is 3.0) 10% compatibility and homogenization; control the water content to 10%, and make raw meal pellets; screen the raw meal pellets to screen out 30mm raw meal pellets. Put the green pellets into the drying equipment, heat at 300°C, dehydrate and dry for 15 minutes to obtain dry green pellets; put the dry green pellets into the furnace made of silicon carbide, heat to 1000°C without adding an external field, and the constant temperature volatilization time is For 60 minutes, 71.7g of rubidium-enriched soot was collected by electr...

Embodiment 2

[0035]The spodumene tailings prepared by spodumene flotation in a certain place in Sichuan were used as raw materials (tested: among them, Li 2 O 0.16%, Rb 2 O0.17%, Cs 2 O 0.011%, K 2 O 3.14%, Al 2 o 3 13.37%, SiO 2 77.62%, Fe 2 o 3 1.28%), weighing 1.0kg, ground to -74μm, accounting for more than 80%, composed of the following components: spodumene tailings: 70%; basalt fiber short waste silk: 15%; coal powder: 5%; water glass (Modulus is 3.0) 10% compatibility and homogenization; control the water content to 10%, and make raw meal pellets; screen the raw meal pellets to screen out 30mm raw meal pellets. Put the green balls into the microwave belt drying equipment, under the condition of microwave power of 1000w, heat at 300°C, dehydrate and dry for 15 minutes to get the dry green balls; put the dry green balls into the silicon carbide furnace for high-temperature microwave sintering, Under the condition of microwave power of 2000w, heat to 1200°C, constant tempera...

Embodiment 3

[0037] The spodumene tailings prepared by spodumene flotation in a certain place in Sichuan were used as raw materials (tested: among them, Li 2 O 0.16%, Rb 2 O0.17%, Cs 2 O 0.011%, K 2 O 3.14%, Al 2 o 3 13.37%, SiO 2 77.62%, Fe 2 o 3 1.28%), weighing 1.0kg, ground to -74μm, accounting for more than 80%, composed of the following components: spodumene tailings: 70%; basalt fiber short waste silk: 15%; coal powder: 5%; water glass (Modulus is 3.0) 10% compatibility and homogenization; control the water content to 10%, and make raw meal pellets; screen the raw meal pellets to screen out 30mm raw meal pellets. Put the green balls into the microwave belt drying equipment, under the condition of microwave power of 1000w, heat at 300°C, dehydrate and dry for 15 minutes to get the dry green balls; put the dry green balls into the silicon carbide furnace for microwave high-temperature sintering for In the microwave high-temperature sintered silicon carbide furnace, the micro...

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Abstract

The invention relates to the field of comprehensive utilization of mineral raw materials, in particular to a method for volatilizing and extracting rubidium from spodumene tailings based on a microwave field, which comprises the following steps: S1, selecting spodumene tailings and grinding to obtain spodumene tailing powder; s2, uniformly mixing the spodumene tailing powder with inorganic non-metal fibers, pulverized coal, water glass and water, and drying and dehydrating to obtain dry green pellets; s3, the dry green pellets are heated to 1000 DEG C to 1600 DEG C, the temperature is kept constant for 30 min to 60 min, and calcined clinker is obtained; and collecting smoke dust to obtain rubidium-enriched smoke dust. The calcined clinker obtained by the invention meets the component requirement range for compatibility of mineral mixtures of basalt fibers, rubidium can be recovered from rubidium-enriched smoke dust through a leaching separation process, and relatively remarkable volatilization and enrichment are realized. According to the method, the comprehensive utilization efficiency of elements such as rubidium, lithium, silicon, aluminum, potassium and sodium in the spodumene tailings is remarkably improved, and the advantages of energy conservation and environmental protection of internal source heating are fully exerted in the technological process.

Description

technical field [0001] The invention relates to the field of comprehensive utilization of mineral raw materials, in particular to a method for extracting rubidium from spodumene tailings by volatilization based on a microwave field. Background technique [0002] Rubidium is a rare and dispersed alkali metal element with high activity and low melting point. It is the element with the highest electropositivity and the largest photoelectric effect among all the elements found on the earth. Rubidium does not contain radioactivity, while cesium is radioactive, and the mining of rubidium is much more convenient in terms of environmental protection. Some unique properties of rubidium and its compounds have shown great application prospects and important scientific and commercial values ​​in the field of emerging materials. [0003] Rubidium is a typical dispersed element, and no independent rubidium deposit has been found in the world. At present, rubidium used in countries all o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B7/02C22B26/10C22B1/24
CPCC22B7/006C22B7/02C22B1/2406C22B26/10Y02P10/20
Inventor 冀成庆陈超周雄朱昌洛邓伟杨耀辉
Owner INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI