CN103449523A - Preparation method of extracted high-purity molybdenum trioxide - Google Patents
Preparation method of extracted high-purity molybdenum trioxide Download PDFInfo
- Publication number
- CN103449523A CN103449523A CN2012101863767A CN201210186376A CN103449523A CN 103449523 A CN103449523 A CN 103449523A CN 2012101863767 A CN2012101863767 A CN 2012101863767A CN 201210186376 A CN201210186376 A CN 201210186376A CN 103449523 A CN103449523 A CN 103449523A
- Authority
- CN
- China
- Prior art keywords
- molybdenum trioxide
- preparation
- temperature
- subliming furnace
- purity molybdenum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The invention relates to the field of molybdenum trioxide, and specifically relates to a preparation method of extracted high-purity molybdenum trioxide. The preparation method is characterized by comprising the following steps: treating industrial molybdic acid to remove moisture, oil and various trace impurities with a volatilization point lower than 750 DEG C in materials; metering according to sublimation speed for feeding the materials into a subliming furnace, and controlling the temperature of the subliming furnace to 1100 DEG C-1160 DEG C; selectively adopting clean air coiling or liquid nitrogen cooling according to the requirements of the grain size, and controlling the temperature to 250 DEG C or 50 DEG C; collecting the dust by a primary metal membrane for recycling with a yield of 99%, and collecting the dust by a secondary cloth bag with the yield of 1% to recycle high-purity molybdenum trioxide. The technical scheme is adopted, and the subliming furnace is used as a carbon rod for directly heating up, and therefore, the heating efficiency is high, the temperature is controlled by using a computer, and a temperature fluctuation range is +/-1 DEG C. Residues at the furnace bottom are calculated according to material balance and exhausted regularly, and waste of the residues is used as steel-making ferro-molybdenum after being cooled or used as the material for producing sodium molybdate after being crushed. The preparation method disclosed by the invention is safe and reliable in process, high in recovery rate and high in quality, thereby improving production efficiency and relieving labor intensity of operation personnel.
Description
Technical field
The present invention relates to the molybdic oxide field, is a kind of preparation method who extracts high-purity molybdenum trioxide.
Background technology
Generally the method for application is now: will make the elaboration ammonium molybdate containing the raw material of molybdenum, the refining ammonium molybdate of heating generates high-purity molybdenum trioxide.Ammonium molybdate is made through roasting, lixiviate, removal of impurities, the techniques such as concentrated, acid is heavy, filtration by the above concentrated molybdenum ore of molybdenum content 40%, yield 95% left and right of molybdenum.Therefore give birth to waste gas in process, waste water, waste residue amount large, the environmental protection difficulty is large,, expense is high.
Summary of the invention
The objective of the invention is to propose a kind of technique simple, consuming time short, energy consumption is low, quality good, the preparation method of eco-friendly processing high purity molybdic oxide.
Technical scheme of the present invention is: it is characterized in that industrial molybdic acid is after processing, remove moisture content, oil and volatilization point in material at the various trace impurities below 750 ℃; According to rate of sublimation, metering feeds subliming furnace by material, and the subliming furnace temperature is controlled at 1100~1160 ℃; Or cooled with liquid nitrogen cooling with uncontaminated air are selected in requirement to granularity, and temperature is controlled at 250 ℃ or 50 ℃; The recovery of gathering dust of one-level metallic membrane, yield is 99%, secondary bag collection 1% reclaims high-purity molybdenum trioxide.
Owing to having taked technique scheme, the use subliming furnace is the carbon-point direct heating, so thermo-efficiency is high, and temperature control is controlled with computer, temperature fluctuation range ± 1 ℃.The furnace bottom residue calculates according to material balance, regularly discharge, the cooling rear work steel-making molybdenum-iron of its waste material or the rear raw material of making to produce Sodium orthomolybdate of pulverizing.This process safety is reliable, the rate of recovery is high, environmental friendliness, be convenient to automatization control, technique simple, consuming time short, energy consumption is low, quality is high, has improved production efficiency, has alleviated operator's labour intensity.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated.
Embodiment 1
1, industrial molybdic acid gives processing.750 ℃ for the treatment of temps, remove moisture and oil in material, and remove that in material, volatilization point is at other trace impurity below 750 ℃, and the material molybdic oxide content after processing is more than 98%; Impurity to material accurately detects;
2, according to rate of sublimation, metering is sent material into subliming furnace, if containing metal calcium constituent in material, the subliming furnace Control for Kiln Temperature is at 1100 ℃.
3, select the cooling or cooled with liquid nitrogen of uncontaminated air according to customer requirements, the one-level temperature before retrieving arrangement of gathering dust is controlled at 250 ℃ or 50 ℃;
4, reclaim through the I and II gas solid separation, collect product (nano level) high-purity molybdenum trioxide;
5, the subliming furnace residue calculates according to material balance, regularly discharge.
Embodiment 2
1, industrial molybdic acid gives processing.750 ℃ for the treatment of temps, remove moisture and oil in material, and remove that in material, volatilization point is at other trace impurity below 750 ℃, and the material molybdic oxide content after processing is more than 98%; Impurity to material accurately detects;
According to rate of sublimation metering, material is sent into to subliming furnace, if containing metal calcium constituent not in material, the subliming furnace Control for Kiln Temperature is at 1160 ℃.
2, select the cooling or cooled with liquid nitrogen of uncontaminated air according to customer requirements, the one-level temperature before retrieving arrangement of gathering dust is controlled at 250 ℃ or 50 ℃;
3, reclaim through the I and II gas solid separation, collect product (nano level) high-purity molybdenum trioxide;
4, the subliming furnace residue calculates according to material balance, regularly discharge.
Claims (1)
1. a preparation method who extracts high-purity molybdenum trioxide, is characterized in that industrial molybdic acid is after processing, removes moisture content, oil and volatilization point in material at the various trace impurities below 750 ℃; According to rate of sublimation, metering feeds subliming furnace by material, and the subliming furnace temperature is controlled at 1100~1160 ℃; Or cooled with liquid nitrogen cooling with uncontaminated air are selected in requirement to granularity, and temperature is controlled at 250 ℃ or 50 ℃; The recovery of gathering dust of one-level metallic membrane, yield is 99%, secondary bag collection 1% reclaims high-purity molybdenum trioxide.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2012101863767A CN103449523A (en) | 2012-06-04 | 2012-06-04 | Preparation method of extracted high-purity molybdenum trioxide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2012101863767A CN103449523A (en) | 2012-06-04 | 2012-06-04 | Preparation method of extracted high-purity molybdenum trioxide |
Publications (1)
Publication Number | Publication Date |
---|---|
CN103449523A true CN103449523A (en) | 2013-12-18 |
Family
ID=49732426
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2012101863767A Pending CN103449523A (en) | 2012-06-04 | 2012-06-04 | Preparation method of extracted high-purity molybdenum trioxide |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN103449523A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103818960A (en) * | 2014-03-03 | 2014-05-28 | 浙江理工大学 | Method for preparing alpha-MoO3 nanobelt by adopting hot-wire chemical vapor deposition technology |
CN105329945A (en) * | 2015-12-04 | 2016-02-17 | 湖北中澳纳米材料技术有限公司 | Device and method for preparing high-purity and high-dissolvability molybdenum trioxide with industrial molybdic acid |
WO2017092712A1 (en) * | 2015-12-04 | 2017-06-08 | 湖北中澳纳米材料技术有限公司 | Device and method for producing high-purity nano molybdenum trioxide |
CN107381642A (en) * | 2017-09-19 | 2017-11-24 | 芜湖人本合金有限责任公司 | High-purity molybdenum trioxide and preparation method thereof |
CN107522231A (en) * | 2017-09-19 | 2017-12-29 | 芜湖人本合金有限责任公司 | High-purity molybdenum trioxide and preparation method thereof |
CN108193060A (en) * | 2018-01-04 | 2018-06-22 | 中南大学 | The method of rhenium-containing molybdenum concntrate volatilization-water logging separation molybdenum-rhenium |
CN112266021A (en) * | 2020-11-25 | 2021-01-26 | 中南大学 | Synchronous preparation phase pure alpha-MoO3And beta-MoO3Method (2) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6468497B1 (en) * | 2000-11-09 | 2002-10-22 | Cyprus Amax Minerals Company | Method for producing nano-particles of molybdenum oxide |
-
2012
- 2012-06-04 CN CN2012101863767A patent/CN103449523A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6468497B1 (en) * | 2000-11-09 | 2002-10-22 | Cyprus Amax Minerals Company | Method for producing nano-particles of molybdenum oxide |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103818960A (en) * | 2014-03-03 | 2014-05-28 | 浙江理工大学 | Method for preparing alpha-MoO3 nanobelt by adopting hot-wire chemical vapor deposition technology |
CN103818960B (en) * | 2014-03-03 | 2015-06-17 | 浙江理工大学 | Method for preparing alpha-MoO3 nanobelt by adopting hot-wire chemical vapor deposition technology |
CN105329945A (en) * | 2015-12-04 | 2016-02-17 | 湖北中澳纳米材料技术有限公司 | Device and method for preparing high-purity and high-dissolvability molybdenum trioxide with industrial molybdic acid |
WO2017092712A1 (en) * | 2015-12-04 | 2017-06-08 | 湖北中澳纳米材料技术有限公司 | Device and method for producing high-purity nano molybdenum trioxide |
GB2559305A (en) * | 2015-12-04 | 2018-08-01 | Hubei Zhongao Nanotech Co Ltd | Device and method for producing high-purity nano molybdenum trioxide |
US10745290B2 (en) | 2015-12-04 | 2020-08-18 | Hubei Zhong'ao Nanotech Co., Ltd | Device and method for producing high-purity nano molybdenum trioxide |
GB2559305B (en) * | 2015-12-04 | 2021-12-29 | Hubei Zhongao Nanotech Co Ltd | Device and method for producing high-purity nano molybdenum trioxide |
CN107381642A (en) * | 2017-09-19 | 2017-11-24 | 芜湖人本合金有限责任公司 | High-purity molybdenum trioxide and preparation method thereof |
CN107522231A (en) * | 2017-09-19 | 2017-12-29 | 芜湖人本合金有限责任公司 | High-purity molybdenum trioxide and preparation method thereof |
CN108193060A (en) * | 2018-01-04 | 2018-06-22 | 中南大学 | The method of rhenium-containing molybdenum concntrate volatilization-water logging separation molybdenum-rhenium |
CN112266021A (en) * | 2020-11-25 | 2021-01-26 | 中南大学 | Synchronous preparation phase pure alpha-MoO3And beta-MoO3Method (2) |
CN112266021B (en) * | 2020-11-25 | 2021-11-16 | 中南大学 | Synchronous preparation phase pure alpha-MoO3And beta-MoO3Method (2) |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN103449523A (en) | Preparation method of extracted high-purity molybdenum trioxide | |
JP6687608B2 (en) | Collection method | |
Zhao et al. | Extracting tungsten from scheelite concentrate with caustic soda by autoclaving process | |
Wang et al. | Leaching of niobium and tantalum from a low-grade ore using a KOH roast–water leach system | |
Wang et al. | A novel technology of molybdenum extraction from low grade Ni–Mo ore | |
CN102219257B (en) | Method for preparing vanadium pentoxide | |
CN100482814C (en) | Extraction of vanadium and molybdenum compound from refused materials containing vanadium and molybdenum etc. multiple elements | |
CN106148730B (en) | A kind of method that alkali metal is extracted from lepidolite | |
CN107282598A (en) | A kind of aluminium cell discards the recoverying and utilizing method of cathode carbon pieces | |
CN105039725A (en) | Method for recycling rare earth elements from rare earth electrolytic slag | |
CN110344086A (en) | A method of electrolyte components are separated and recovered from fluoric-salt system Rare Earth Electrolysis fused salt slag | |
CN103993182B (en) | The comprehensive recovering process of secondary resource in a kind of iron vitriol slag | |
CN103911514B (en) | The recovery and treatment method of scrap hard alloy grinding material | |
CN104232902A (en) | Method for recycling tungsten, molybdenum, aluminum and cobalt from waste catalyst through wet process | |
CN109536700A (en) | A method of comprehensive utilization steel-making dust enriched iron | |
CN103014317A (en) | Method for extracting lithium salt from lepidolite | |
Jandová et al. | Obtaining Li2CO3 from zinnwaldite wastes | |
CN109112305A (en) | A kind of fluorine-containing Rare Earth Mine defluorinate extract technology | |
CN102180502B (en) | Method for extracting alum from lepidolite raw material | |
CN110306065A (en) | A kind of method that vanadium slag prepares ammonium metavanadate | |
CN103922294B (en) | A kind of method reclaiming red arsenic and metallic arsenic from red arsenic waste residue | |
CN102145907B (en) | Method for preparing low-iron aluminum chloride crystals by using fly ash as raw material | |
CN111348653B (en) | Method for preparing high-purity silicon, titanium white and high-purity fluoride by using titanium-containing slag and low-purity silicon material | |
CN102154546A (en) | Method for smelting molybdenum-nickel mineral association by wet process | |
CN106756060A (en) | A kind of recovery method of indium metal |
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 |
Application publication date: 20131218 |