CN101469375A - Method for removing copper impurity in molybdenum concentrate - Google Patents
Method for removing copper impurity in molybdenum concentrate Download PDFInfo
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- CN101469375A CN101469375A CNA2007100780802A CN200710078080A CN101469375A CN 101469375 A CN101469375 A CN 101469375A CN A2007100780802 A CNA2007100780802 A CN A2007100780802A CN 200710078080 A CN200710078080 A CN 200710078080A CN 101469375 A CN101469375 A CN 101469375A
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- molybdenum ore
- concentrated molybdenum
- reaction
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- molybdenum concentrates
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Abstract
The invention provides a method for removing copper impurities in molybdenum concentrates. The method comprises: concentrated sulfuric acid is heated in a reaction kettle where half of the total quantity of molybdenum concentrates is added, and then 25 percent of the molybdenum concentrates are added into the reaction kettle after foam disappears; the rest 25 percent of the molybdenum concentrates are added into the reaction kettle after the foam disappears again, and the reaction kettle is heated continuously; heating power is controlled to be between 10 and 30 kilowatts when temperature is raised to be between 160 and 200 DEG C, and reacting temperature is kept for 2 to 6 hours; when the reaction is ceased, slurry materials are stirred in a cooling kettle where water is added for slurry regulation and cooling; reaction products are filtered at normal temperature, and the molybdenum concentrates are washed by water for several times and then are dried and packaged. The copper content of the molybdenum concentrates treated by the process is less than 0.5 percent.
Description
Technical field
The present invention relates to the removal method of copper impurity in a kind of concentrated molybdenum ore, belong to the Application in Chemical Engineering field.
Background technology
Nearly have 70% to be from porphyry copper and skarn type lindgrenite in the concentrated molybdenum ore, because the technique of preparing factor, the impurity copper content in the concentrated molybdenum ore product is between 1%～10%.At present adopt the mode of oxidizing roasting to handle substantially to concentrated molybdenum ore, the existence of copper can influence the efficient of roasting greatly, and the cupric calcining can cause the reduction of molybdenum yield during copper removal in producing the ammonium molybdate process.
Summary of the invention
Purpose of the present invention just provides the removal method of copper impurity in a kind of concentrated molybdenum ore, and this method can effectively reduce the content of impurity copper in the concentrated molybdenum ore, is beneficial to the further processing of concentrated molybdenum ore.
Purpose of the present invention can realize by following scheme: the vitriol oil is put into reactor and heating, drop into 50% of concentrated molybdenum ore total amount, can produce a large amount of gas with sulfuric acid reaction and form foam owing to containing carbonate minerals in the concentrated molybdenum ore, after treating lather collapse, add 25% concentrated molybdenum ore again, having foam again generates, after treating that foam disappears again, add the concentrated molybdenum ore of remainder 25% again, continue heating, when temperature rises to 160--200 ℃, the control heating power is at 10-30 kilowatts, keep temperature of reaction, continue 2--6 hour, reaction stops.Slurry is put into cooling reactor, stir and to add the water cooling of sizing mixing, filter at normal temperatures, the concentrated molybdenum ore water is cleaned for several times, the concentrated molybdenum ore drying is packed and is got final product, and the concentrated molybdenum ore cupric after the processing is less than 0.5%.
Claims (1)
1, the removal method of copper impurity in a kind of concentrated molybdenum ore, the vitriol oil is put into reactor and heating, drop into 50% of concentrated molybdenum ore total amount, after treating lather collapse, add 25% concentrated molybdenum ore again, treat that foam disappears again after, the concentrated molybdenum ore that adds remainder 25% again, continue heating, when temperature rose to 160--200 ℃, the control heating power was at 10-30 kilowatts, keep temperature of reaction, continue 2--6 hour, reaction stops, and slurry is put into cooling reactor, stirring adds the water cooling of sizing mixing, filter at normal temperatures, the concentrated molybdenum ore water is cleaned for several times, concentrated molybdenum ore drying packing gets final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100780802A CN101469375A (en) | 2007-12-28 | 2007-12-28 | Method for removing copper impurity in molybdenum concentrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100780802A CN101469375A (en) | 2007-12-28 | 2007-12-28 | Method for removing copper impurity in molybdenum concentrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101469375A true CN101469375A (en) | 2009-07-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100780802A Pending CN101469375A (en) | 2007-12-28 | 2007-12-28 | Method for removing copper impurity in molybdenum concentrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101469375A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102181633A (en) * | 2011-04-14 | 2011-09-14 | 中国环境科学研究院 | Molybdenum concentrate constant pressure oxidation leaching technology of byproduct concentrated sulfuric acid |
| CN112845176A (en) * | 2021-02-08 | 2021-05-28 | 江西铜业集团(贵溪)冶金化工工程有限公司 | Automatic impurity removing machine for conveying copper concentrate by belt |
-
2007
- 2007-12-28 CN CNA2007100780802A patent/CN101469375A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102181633A (en) * | 2011-04-14 | 2011-09-14 | 中国环境科学研究院 | Molybdenum concentrate constant pressure oxidation leaching technology of byproduct concentrated sulfuric acid |
| CN112845176A (en) * | 2021-02-08 | 2021-05-28 | 江西铜业集团(贵溪)冶金化工工程有限公司 | Automatic impurity removing machine for conveying copper concentrate by belt |
| CN112845176B (en) * | 2021-02-08 | 2022-06-03 | 江西铜业集团(贵溪)冶金化工工程有限公司 | Automatic impurity removing machine for conveying copper concentrate by belt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090701 |