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Method for producing scandium compound, and scandium compound

A manufacturing method and compound technology, applied in the field of scandium compound manufacturing, can solve problems such as cost increase, and achieve the effect of reducing effort

Inactive Publication Date: 2019-04-02
SUMITOMO METAL MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the cost increases, and there may be risks on the security level

Method used

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  • Method for producing scandium compound, and scandium compound
  • Method for producing scandium compound, and scandium compound
  • Method for producing scandium compound, and scandium compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0082] Hereinafter, the present invention will be described more specifically by giving examples of the present invention. It should be noted that the present invention is not limited by the following examples.

[0083] (Wet smelting process of nickel oxide ore)

[0084] Nickel oxide ore is leached with sulfuric acid in an autoclave, and hydrated lime is added to the obtained leaching solution for neutralization. Thereafter, a sulfidizing agent was added to the obtained neutralized solution to cause a sulfidation reaction, nickel, cobalt, etc. were separated as sulfides, and a sulfided solution containing scandium was obtained.

[0085] (ion exchange treatment, neutralization treatment)

[0086] Next, the obtained vulcanized solution was subjected to ion exchange treatment using a chelate resin, and impurities in the solution were separated to obtain an eluate containing scandium eluted from the chelate resin (scandium eluate). Thereafter, a neutralizing agent is added to t...

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Abstract

Provided is a method for producing, from scandium oxalate crystals obtained through an oxalate conversion process, a readily-soluble scandium compound that dissolves easily in an aqueous solution suchas an acid. This method for producing a scandium compound involves carrying out an oxalate conversion process using oxalic acid in a solution containing scandium, separating the product obtained through the oxalate conversion process into a liquid and scandium oxalate crystals, and obtaining a scandium compound by roasting the obtained scandium oxalate crystals at a temperature of 400 DEG C to 800 DEG C, preferably 400 DEG C to 600 DEG C.

Description

technical field [0001] The present invention relates to a method for producing a scandium compound, and more specifically, relates to a method capable of producing an easily soluble scandium compound that is easily dissolved in an aqueous solution such as an acid, and a scandium compound obtained by the production method. Background technique [0002] In recent years, the High Pressure Acid Leaching (HPAL) process is becoming more and more applied. In this high-pressure acid leaching process, nickel oxide ore and sulfuric acid are put into a pressurized vessel and heated to about 240°C to 260°C. The leaching treatment is carried out at a high temperature and separated into a leaching solution containing nickel and a leaching residue. [0003] In addition to valuable elements such as nickel and cobalt, nickel oxide ores also contain trace amounts of scandium. Scandium is extremely useful as an additive to high-strength alloys and as an electrode material for fuel cells, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B59/00C22B1/02C22B3/44
CPCC22B3/42C22B3/44C22B59/00Y02P10/20C22B1/02C01F17/212C01F17/13C01P2002/72C01P2002/74C01P2006/12
Inventor 桧垣达也小林宙
Owner SUMITOMO METAL MINING CO LTD
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