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Manganese oxide adsorbent and preparation method thereof

A technology of manganese oxide and adsorbent, which is applied in the direction of chemical instruments and methods, other chemical processes, process efficiency improvement, etc., can solve the problems such as the complexity of Li+ separation technology, and achieve easy preparation methods, mild reaction conditions, and extensive industrial application prospects Effect

Inactive Publication Date: 2013-02-13
SHANGHAI INST OF SPACE POWER SOURCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lithium-containing salt lake brine resources in my country are mostly brine with a high ratio of magnesium to lithium, and the high content of Mg 2+ The existence of makes the separation of Li + The technology is more complicated, and there is no foreign technology to learn from at present, which has become the technical bottleneck of lithium extraction from brine

Method used

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  • Manganese oxide adsorbent and preparation method thereof
  • Manganese oxide adsorbent and preparation method thereof
  • Manganese oxide adsorbent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Mix the manganese-containing compound and the lithium-containing compound with a weight ratio of 1:1, and then heat it to 200°C in a closed container in the air, keep the temperature for 24 hours, and take pictures with a Hitachi-S3400N scanning electron microscope. Such as figure 1 shown.

[0023] The resulting mixture was dried at 60°C, and then kept at 500°C for 6 hours to obtain a powder containing manganese oxide, which was photographed with a Hitachi-S3400N scanning electron microscope. The electron microscope photos are as follows: figure 2 shown.

[0024] Take 140 parts by weight of the obtained powdered manganese oxide and 25 parts of binder, mix evenly, and finally form by extrusion, and drop the molding into the solution of ethanol and deionized water to prepare the manganese oxide adsorbent . Adopt Hitachi-S4800 scanning electron microscope to take pictures of manganese oxide adsorbent, the electron microscope photos are as follows image 3 shown.

[0...

Embodiment 2

[0027] Mix the manganese-containing compound and the lithium-containing compound with a weight ratio of 1:1.5 evenly, then heat to 100°C in a closed container in the air, and keep the temperature for 48 hours.

[0028] The resulting mixture was dried at 80°C, and then kept at 600°C for 5 hours to obtain a powder containing manganese oxide.

[0029] Take 120 parts by weight of the obtained powdered manganese oxide and 28 parts of binder, mix evenly, and finally form by centrifugation, and drop the molded product into the ethanol solution to prepare the manganese oxide adsorbent.

[0030] The manganese oxide adsorbent is used for brine adsorption, and the brine passes through the manganese oxide adsorbent until it is saturated, and the concentration of lithium ions in the brine before and after adsorption is tested by an atomic absorption spectrophotometer. The test shows that the adsorption concentration of the adsorbent can reach the original brine The medium concentration is ...

Embodiment 3

[0032] Mix the manganese-containing compound and the lithium-containing compound with a weight ratio of 1:3, and then heat to 150°C in a closed container in the air, and keep the temperature for 36 hours.

[0033] The resulting mixture was dried at 100°C, and then kept at 400°C for 8 hours to obtain a powder containing manganese oxide.

[0034] Take 100 parts by weight of the obtained powdery manganese oxide and mix evenly with 30 parts of binder, and finally form by centrifugation, and drop the molded product into the ethanol solution to prepare the manganese oxide adsorbent.

[0035] The manganese oxide adsorbent is used for brine adsorption, and the brine passes through the manganese oxide adsorbent until it is saturated, and the concentration of lithium ions in the brine before and after adsorption is tested by an atomic absorption spectrophotometer. The test shows that the adsorption concentration of the adsorbent can reach the original brine More than 80% of the medium c...

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Abstract

The invention discloses a manganese oxide adsorbent and a preparation method thereof. The manganese oxide adsorbent comprises the following components in parts by weight; 100-150 parts of powder containing manganese oxide and 25-30 parts of binding agent, wherein the powder containing manganese oxide is composed of a manganese-containing compound and a lithium-containing compound in a weight ratio of (1:1)-(1:3). The preparation method comprises the steps of: 1, uniformly mixing the manganese-containing compound with the lithium-containing compound, heating to 100-200 DEG C and carrying out temperature preservation for 24-48 hours; 2, cooling the mixture to the room temperature, drying at the temperature of 60-100 DEG C, and then carrying out the temperature preservation for 5-8 hours at the temperature of 400-600 DEG C so as to obtain the powder containing manganese oxide; 3, uniformly mixing 100-150 parts of powder containing manganese oxide in the step 2 with 25-30 parts of binding agent; 4, carrying out extrusion forming or centrifugal forming on the obtained uniform mixture; and 5, dripping the formed material in ethanol or a solution of the ethanol and deionized water to obtain the manganese oxide adsorbent. The manganese oxide adsorbent disclosed by the invention is high in extraction efficiency and long in service life; and the preparation method is easy to implement, convenient, safe and low in energy consumption.

Description

technical field [0001] The invention relates to the field of micron-attached materials, in particular to a manganese oxide adsorbent and a preparation method thereof. Background technique [0002] With the continuous development of new energy vehicles, the demand for lithium products in the international market continues to grow, with an average annual growth rate of 7% to 11%. As an upstream product of the new energy vehicle industry chain, the development and utilization of lithium resources has become a hot topic of common concern to international scientific research departments and industrial circles. Some lithium companies in the world are constantly seeking ways to develop new resources and expand product output. Due to the limited resources of lithium rich ore on land, the production cost is high, and the taste of mineral products has declined. Unable to meet the current demand, it has become a foregone conclusion that lithium extraction from salt lakes has replaced ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/06B01J20/30
CPCY02P10/20
Inventor 丰震河汤卫平解晶莹
Owner SHANGHAI INST OF SPACE POWER SOURCES
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