Jx Nippon Mining Metals Corporation

Shibaura Institute of Technology

Jx Advanced Metals Corporation

Akira Miura

Mitsuo Yamashita

Kenichi Kuwano

Manabu Manabe

Atsuko Abe

Katsuyuki Sato

Shintaro Kawashiro

Takenari Kuwazawa

Provided is a method for selecting arsenic-containing minerals. A peptide comprising an amino acids sequence according to the following formula:(T,S,N,Q)-(L,I,V,F,A)-(E,D)-(R,K,N,M,D,C,P,Q,S,E,T,G,W,H,Y)-(L,I,V,F,A)-(R,K,N,M,D,C,P,Q,S,E,T,G,W,H,Y)-(L,I,V,F,A)-(L,I,V,F,A)-(L,I,V,F,A)-(R,H,K)-(T,S,N,Q)-(T,S,N,Q)wherein one amino acid is respectively selected from each group defined by paired parentheses.

Peptide and method for using same

Providing a method for selecting minerals containing arsenic. A peptide comprising an amino acids sequence according to the following formula: (T, S, N, or Q)-(H, P, or W)-(E, or D)-(H, P, W, R, or K)-(L, I, V, F, or A)-(L, I, V, F, or A)-(L, I, V, F, or A)-(T, S, N, or Q)-(H, P, or W)-(L, I, V, F, or A)-(T, S, N, or Q)-(L, I, V, F, or A) wherein one amino acid is respectively selected from each group defined by paired parentheses.

Peptide binding to arsenic-containing mineral and use thereof

(Technical problems to be solved) Providing a method for selecting an mineral of molybdenum. (Means for solving the problems) A peptide comprising an amino acids sequence according the following formula (1) and/or (2): (1) (ALRKNMD-FCPQSETGWHYIV)-(LIVFA)-(HPWRK)-(TSNQ)-(TSNQ)-(LIVFA)-(TSNQ)-(TSNQ)-(LIVFA)-(FYW)-(LIVFA)-(HPWRK) (2) (LIVFA)-(RHK)-(TSNQ)-(LIVFA)-(LIVFA)-(TSNQ)-(LIVFA)-(LIVFA)-(LIVFA)-(RHK)-(RHK)-(HPW) wherein one amino acid is respectively selected from each group defined by paired parentheses.

Peptide and use thereof

Improved methods and compositions for refining molybdenum mineral are provided, in particular for isolating a substance containing molybdenum which comprises contacting the substance containing molybdenum with a composition comprising a M13 phage. The M13 phage provides selectivity and recovery of the substance containing molybdenum.

Methods and compositions for refining molybdenum mineral

The present invention provides a method for efficiently leaching copper from copper sulfide ore by separating and recovering iodine, and iron(III) ions to be used are regenerated by a heap of stacked ore in the method for leaching copper from copper sulfide using a sulfuric acid solution containing iodide ions and iron(III) ions as a leaching solution. The present invention relates to a method for leaching copper from copper sulfide, comprising the following steps: a copper leaching step for leaching copper from copper sulfide ore using a sulfuric acid solution containing iodide ions and iron(III) ions as a leaching solution to yield a first solution; an iodine separation treatment step for separating iodine in the first solution to yield a second solution having a lowered concentration of iodine therein; and an iron oxidation step for oxidizing the second solution to yield a third solution, leaching the copper sulfide ore or another copper sulfide using the third solution and an aqueous solution containing iodine, wherein the iron oxidation step comprises irrigating the solution after iodine separation treatment onto stacked ore, thereby oxidizing iron(II) ions existing in the solution after iodine treatment and generated by copper leaching.

Method for leaching copper from copper sulfide ore

A method of leaching copper from a copper sulfide ore which includes adding a potential adjustment agent for lowering a potential of a leaching solution obtained after leaching copper from the copper sulfide ore by using iodide ion and iron (III) ion, the leaching solution being stored in a tank for storing the leaching solution.

Method of leaching copper from copper sulfide ore and method of evaluating iodine loss content of column leaching test of the copper sulfide ore

Provided is a method for separating and recovering iodine ingredients from acid solution containing iodide ions and iron (II) ions and for efficiently producing iron (III) ions. Said method is for treating acid solution containing the iodide ions and the iron (II) ions. Said method comprises a step of oxidizing the iron (II) ions in said solution into iron (III) ions with iron-oxidizing microorganisms, the step being performed in the presence of activated carbon.

Method for processing acidic solution that contains iodide ions and iron ions

A method for producing an iron (III) ion from the acidic solution containing an iodide ion and an iron (II) ion efficiently and stably is provided. The method including performing the following steps (a)-(b), repeatedly and continuously: (a) a step wherein the iron (II) ion in the acidic solution containing the iodide ion and the iron (II) ion is oxidized into iron (III) ion in a reactor using a microbes immobilizing carrier to which iron oxidizing microbes attached; (b) a step wherein sedimentation of the solution obtained in the step (a) is performed in a sedimentation tank to obtain the solution containing the iron (III) ion and concurrently the sediment of the microbes immobilizing carrier to which the iron oxidizing microbes have attached is recovered and then reintroduced into the reactor in the step (a).

Process of treatment for oxidizing an acidic solution containing an iodide ion and an iron (II) ion

Disclosed is a method of copper leaching without reducing the growth of iron-oxidizing bacterium and the iron-oxidizing capacity when leaching copper from a copper sulfide ore with the use of a sulfuric acid solution to which iron-oxidizing bacteria and silver have been added. Also disclosed is a method of leaching copper from a copper sulfide ore, including adding a naturally occurring nitrogen-containing organic component to a leaching solution upon copper leaching from a copper sulfide ore with the use of, as the leaching solution, a sulfuric acid solution to which iron-oxidizing bacteria and silver have been added is provided.

Method of leaching copper sulfide ore

A method of leaching copper sulfide ore includes leaching copper from copper sulfide ore using a sulfuric acid solution comprising iodide ion and iron (III) ion surplus to the iodide ion as a leaching solution; reducing iodine in a solution obtained after the leaching step to less than 1 mg/L by an activated carbon treatment; and oxidizing iron (II) ion or newly added iron (II) ion in a solution obtained after the iodine reduction step by using iron oxidizing microbes to recover iron (III) ion.

Growing community of inventors

Hitachi, Japan

Akira Miura