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Hydrometallurgical process and method for recovering metals

A metal and valuable metal technology, applied in rare earth metal fluorides, chemical instruments and methods, rare earth metal compounds, etc., to achieve the effect of reducing demand, reducing reactant costs and transportation requirements, and reducing operating costs

Inactive Publication Date: 2013-02-20
MOLYCORP MINERALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This often requires mine operators to build sufficient power generation equipment at high capital and operating costs

Method used

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  • Hydrometallurgical process and method for recovering metals
  • Hydrometallurgical process and method for recovering metals
  • Hydrometallurgical process and method for recovering metals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A

[0141] Example A is the determination of a multi-stage precipitation and ion exchange process for the removal of divalent and trivalent cations prior to salt splitting treatment. Figure 4 and Figure 5 The reduction of divalent alkaline earth metal (especially magnesium, calcium, strontium and barium) and trivalent (lanthanum, cerium, praseodymium, neodymium, samarium and iron) cations after each precipitation and ion exchange stage are shown, respectively.

[0142] M1 is the first precipitation stage ( image 3 ), wherein a salt solution having a pH of about pH 7 (e.g., the by-product salt solution 224, the metal value-depleted salt solution 216, or a combination thereof (combined solution 228) as described above) contacts a Sodium carbonate solution at a pH of about pH 9.5 to form a metal carbonate slurry. Sodium carbonate was dissolved in water with stirring to form the sodium carbonate solution. The metal carbonate slurry has metal carbonate precipitates dispersed in b...

Embodiment B

[0148] Embodiment B is trivalent cation in chelating ion exchange resin ( image 3 Determination of load capacity on IX1) in. The chelating ion exchange resin evaluated was an iminodiacetate based resin sold under the trademark Amberlite IRC-748i by Rohm & Haas. The trivalent cation is lanthanum. By adding about 400 mg of lanthanum oxide (La 2 o 3 ) was dissolved in hydrochloric acid (about 3.7 ml of 2N HCl) to obtain a pH of about pH 4, about 50 g / L NaCl and 83 mg / L lanthanum (as LaCl 3) of the lanthanum feed solution. After dissolving the lanthanum oxide, about 200 grams of NaCl was added, the pH was adjusted to about pH 4 with 1 N NaOH and deionized water was added to give a final volume of about 4 liters. The column was packed with Amberlite IRC-748i. The lanthanum feed solution was passed through the packed column at a rate of about 2.05 mL / min at about 21 degrees Celsius (see Figure 6 ). The maximum trivalent cation capacity of the iminodiacetoxy resin was deter...

Embodiment C

[0150] Example C is the determination of the removal capacity of trivalent cations supported on IX1 resin in Example B. The resin tested was an iminodiacetoxy functional resin sold by Rohm & Haas under the trademark Amberlite IRC-748i. The trivalent cation is lanthanum. About 108 mg of lanthanum was supported on a resin column containing about 4 grams of Amberlite 748i. The lanthanum-supported column was regenerated with a hydrochloric acid solution having a normality of about 2.6N at a flow rate of about 2.7 mL / min. Fractions were collected approximately every 5 minutes. The first 5 fractions contained detectable amounts of lanthanum (see Figure 7 ). The first 5 fractions contained a total of 104 mg lanthanum, which was within experimental error of 108 mg lanthanum loaded on the column. The second fraction had the highest lanthanum concentration of about 7.5 g / L. Fractions beyond the fifth fraction did not contain any detectable amount of lanthanum. From this example,...

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Abstract

A mineral processing facility is provided that includes a cogen plant to provide electrical energy and waste heat to the facility and an electrochemical acid generation plant to generate, from a salt, a mineral acid for use in recovering valuable metals.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of U.S. Provisional Application Serial Nos. 61 / 297,536, filed January 22, 2010, 61 / 427,745, filed December 28, 2010, and 61 / 432,075, filed January 12, 2011, all of which have Like titles, each are incorporated by reference in their entirety. technical field [0003] The present disclosure relates generally to mineral processing plants and equipment and in particular to hydrometallurgical plants and plants for recovery of metals. Background technique [0004] A common method for recovering valuable metals from ores and concentrates is leaching with mineral acids. For example, rare earth metals are typically recovered from bastnaesite using hydrochloric acid to leach the host rock. Uranium can be recovered from uranium-bearing host rocks using phosphoric acid leaching. Copper, beryllium, nickel, iron, lead, molybdenum, aluminum and manganese can be recovered from host rocks using ni...

Claims

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Application Information

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IPC IPC(8): C22B11/00C22B15/00C01F17/235
CPCC22B3/04C01F17/0012C22B23/00C22B3/42C22B34/34C22B3/20C01F17/0062C01F17/00C22B3/02C25B7/00C01F17/235Y02P20/129Y02P10/20C22B11/00C22B15/00C22B59/00C01F17/30C01F17/265
Inventor J.伯巴
Owner MOLYCORP MINERALS
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