Preparation method of scandium oxide for solid fuel battery

A solid fuel cell and scandium oxide technology, applied in fuel cells, chemical instruments and methods, electrochemical generators, etc., can solve problems affecting the physical and mental health of workers, achieve a good operating environment for workers, mild reaction conditions, and make up for electrical conductivity. low rate effect

Active Publication Date: 2017-08-22
山西城市动力新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem mainly solved by the present invention is: for the problem that traditional high-purity scandium oxide is prepared from scandium concentrate by extraction method, and a large amount of toxic extractant is used, which affects the physical and mental health of workers, a scandium oxide for solid fuel cell is provided preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] Weigh 600g of scandium concentrate, put it in a pulverizer, and pass through a 180-mesh sieve after crushing to obtain scandium concentrate powder, then transfer the obtained scandium concentrate powder into a muffle furnace, and heat up to 700°C at a rate of 15°C / min , heat-preserved and calcined for 5 hours, then pour the material in the muffle furnace into a water tank filled with 5L of water at a temperature of 6°C while it is still hot, and then filter the material in the water tank to obtain a fine scandium concentrate filter residue, and then pour the fine scandium concentrate The filter residue is placed in an oven and dried to constant weight at a temperature of 110°C to obtain calcined scandium concentrate powder; weigh 400g of the obtained calcined scandium concentrate powder and pour it into a container containing 1000mL of 20% sodium hydroxide solution. In the three-necked flask, the three-necked flask was moved into an ultrasonic microwave chemical reactor,...

example 2

[0018]Weigh 500g of scandium concentrate, put it in a pulverizer, and pass through a 120-mesh sieve after crushing to obtain scandium concentrate powder, then transfer the obtained scandium concentrate powder into a muffle furnace, and heat up to 680°C at a rate of 10°C / min , heat-preserved and calcined for 3 hours, then pour the material in the muffle furnace into a water tank filled with 3L of water at a temperature of 4°C while it is still hot, and then filter the material in the water tank to obtain fine scandium concentrate filter residue, and then refine the scandium concentrate The filter residue was placed in an oven and dried to constant weight at a temperature of 105°C to obtain calcined scandium concentrate powder; weigh 300g of the obtained calcined scandium concentrate powder and pour it into a container containing 800mL of 15% sodium hydroxide solution. In the three-necked flask, move the three-necked flask into an ultrasonic microwave chemical reactor, under the ...

example 3

[0020] Weigh 550g of scandium concentrate, put it in a pulverizer, and pass through a 140-mesh sieve after crushing to obtain scandium concentrate powder, then transfer the obtained scandium concentrate powder into a muffle furnace, and heat up to 690°C at a rate of 12°C / min , heat-preserved and calcined for 4 hours, then pour the material in the muffle furnace into a water tank filled with 4L of water at a temperature of 5°C while it is still hot, and then filter the material in the water tank to obtain fine scandium concentrate filter residue, and then refine the scandium concentrate The filter residue was placed in an oven and dried to constant weight at a temperature of 107°C to obtain calcined scandium concentrate powder; weigh 350g of the obtained calcined scandium concentrate powder and pour it into a container containing 900mL of 17% sodium hydroxide solution. In the three-necked flask, the three-necked flask was moved into an ultrasonic microwave chemical reactor, and ...

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Abstract

The invention relates to a preparation method of scandium oxide, in particular to a preparation method of scandium oxide for a solid fuel battery, and belongs to the technical field of inorganic chemistry. According to the method, firstly, scandium concentrate is firstly crushed and is then roasted; the cracking occurs after the fast quenching through cold water; then, ultrasonic-microwave treatment is performed in alkali liquid, so that the alkali-soluble impurities are removed; biogas slurry is used for mixed fermentation; weak acid environment is provided; the ball milling is matched; partial metal oxide impurities are removed; organic matters in the biogas slurry are removed after the drying; then, the cold diluted hydrochloric acid is used for soaking; metal oxide impurities such as ferric oxide are removed; then, hot diluted hydrochloric acid is used for dissolving the scandium oxide to form a high-purity scandium chloride solution; oxalic acid is used as a precipitator; after scandium oxalate precipitates are formed; roasting is performed. Therefore the high-purity scandium oxide for solid fuel battery can be obtained. The alkaline leaching is used for matching with the microbial fermentation and ball milling treatment; impurities in the scandium concrete can be removed, so that the product can be purified; in the preparation process, toxic extraction agents are not used; the production process achieves the environment-friendly effects and non-toxicity.

Description

technical field [0001] The invention relates to a preparation method of scandium oxide, in particular to a preparation method of scandium oxide for solid fuel cells, and belongs to the technical field of inorganic chemistry. Background technique [0002] Scandium oxide (Sc 2 o 3 ) is one of the more important products in scandium products. Its physical and chemical properties are similar to those of rare earth oxides (such as La 2 o 3 , Y 2 o 3 and Lu 2 o 3 etc.), so the production methods used in production are very similar. Scandium oxide can produce metal scandium, different salts (scandium chloride, scandium fluoride, scandium iodide and scandium oxalate, etc.) and various scandium alloys (Al-Sc, Al-Zr-Sc series) and other products. These scandium products It has practical technical value. [0003] At present, the raw materials used in the production of scandium oxide mainly include the following three types: waste liquid containing scandium in metallurgy, wast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F17/00H01M8/1246
CPCC01F17/206C01P2006/80H01M8/1246Y02E60/50Y02P70/50
Inventor 闫博文许丽君
Owner 山西城市动力新能源有限公司
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