CN102408123A - Preparation method of superfine copper oxide powder - Google Patents
Preparation method of superfine copper oxide powder Download PDFInfo
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- CN102408123A CN102408123A CN2011101989169A CN201110198916A CN102408123A CN 102408123 A CN102408123 A CN 102408123A CN 2011101989169 A CN2011101989169 A CN 2011101989169A CN 201110198916 A CN201110198916 A CN 201110198916A CN 102408123 A CN102408123 A CN 102408123A
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- oxide powder
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- copper oxide
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Abstract
The invention relates to a preparation method of superfine copper oxide powder. In the preparation method, copper ore is used as a raw material, the superfine copper oxide powder is prepared by adopting a spray baking method, and at the same time, the tail gas generated in a spray baking process is absorbed and returned to a production system for recycle. By utilizing the preparation method, the process flow is shortened, the particle size of copper oxide can be controlled by controlling dewatering, baking and crystal regrowth time, and the environmentally-friendly and large-scald industrial production of the superfine copper oxide powder is achieved.
Description
Technical field
The present invention relates to mineral and smelt, be specially a kind of preparation method of ultrafine copper oxide powder.
Background technology
Cupric oxide powder is a kind of important multi-functional meticulous inorganic materials, is widely used in dyeing, pottery, glass and medical industries at present.As the staple of catalyzer, cupric oxide powder is widely used in multiple catalyst reactions such as oxidation, reduction simultaneously.Ultrafine copper oxide powder particularly, it is little to have a particle diameter, and specific surface area is big, and characteristics such as catalytic activity height have more wide application prospect at aspects such as electricity, magnetic catalysis.
The main method of preparation ultrafine copper oxide powder has solid reaction process, liquid phase method at present.
Solid reaction process is with metal-salt and MOX thorough mixing according to a certain percentage, calcines after the grinding, directly obtains the method for ultrafine copper oxide powder.This method is easy to operate, and technology is simple, and the powder that still generates is reunited easily, need carry out secondary and pulverize.
The liquid phase reaction method comprises: direct precipitation method, complex-precipitation method, hydrothermal method.
Direct precipitation method is in soluble copper solution, directly to add precipitation agent, produces deposition under certain condition, again with throw out filtration, washing, dry, thermolysis, thereby obtains the ultrafine copper oxide powder.This method equipment is simple, easy and simple to handle, be difficult for introducing magazine, but negatively charged ion is more hard to manage.
The complex-precipitation method is earlier mantoquita and complexing agent to be generated complex compound, and reaction obtains throw out with precipitation agent again, then with throw out filtration, washing, dry, thermolysis.Obtain the ultrafine copper oxide powder.This method cost is low, and is simple to operate, and raw material is easy to get.
Hydrothermal method is in special closed reaction vessel (autoclave); With the aqueous solution as medium; Create the reaction environment of a HTHP through reactor drum heating, make usually water insoluble or be insoluble in the substance dissolves and the crystallization again of water, water is as a kind of chemical composition in water-heat process; It is a solvent, is again the transmission media of pressure.The cupric oxide powder crystal morphology that this method obtains is good, and particle is big, but process is complicated.
Summary of the invention
The technical problem that the present invention solved is to provide a kind of preparation method of ultrafine copper oxide powder, provides a kind of with low cost, is suitable for scale operation, non-wastewater discharge, and product purity is high, the preparation method of particle superfine cupric oxide powder.To solve the shortcoming in the above-mentioned background technology.
The technical problem that the present invention solved adopts following technical scheme to realize:
A kind of preparation method of ultrafine copper oxide powder; With the copper mine is raw material, adopts spray roasting to prepare the ultrafine copper oxide powder, and the tail gas that produces in the spray roasting process simultaneously absorbs processing; Being back into the product system recycles; Shortened technical process, and can realize the environmental protection of ultrafine copper oxide powder, large-scale industrialized production through the heavy granularity of controlled oxidation copper for a long time of control dehydration, roasting and crystal.
Its concrete operations step comprises:
One, select materials: the employing copper mine is a raw material, after leaching reaction, obtains the solution of mantoquita, and this copper salt solution is cupric chloride, copper sulfate or copper nitrate solution.
Two, spray: above-mentioned copper salt solution is sprayed obtains the spray droplet of mantoquita.
Three, calcining: above-mentioned spray droplet under air or oxygen atmosphere, is placed the High Temperature Furnaces Heating Apparatus calcining of 450 degree-1100 degree, obtain the ultrafine copper oxide powder, emit the tail gas of containing water vapor, sour gas simultaneously.
Four, tail gas absorbs: the tail gas that produces in the high-temperature calcination process is sprayed absorption, obtain acid solution, this acid solution can be back to the reaction in the process noted earlier, has realized recycle.
Beneficial effect: the present invention has the following advantages:
1. the cupric oxide powder that obtains is a spheroidal particle, and particle is little, and specific surface area is big, epigranular, good dispersivity.
2. directly adopting the copper salt solution after leaching is raw material, has shortened technical process, provides cost savings.
3. realized recycle, the sour gas that high-temperature roasting produces absorbs processing, can be reused for leaching process, has reduced production cost, is fit to scale operation.
Embodiment
Give an actual example below and describe the present invention.
The employing copper mine is a raw material, after leaching purification, obtains highly purified copper salt solution.
Above-mentioned copper salt solution is under high pressure carried out press atomization, obtain the vaporific drop of mantoquita.The vaporific drop of the mantoquita that obtains under the atmosphere of air or oxygen, is placed under 800 degree and carries out roasting, obtain cupric oxide powder, emit the tail gas of containing water vapor, sour gas simultaneously.
Through the control dewatering time, the heavy granularity of controlled oxidation copper powder body for a long time of roasting time and crystal.The tail gas that produces in the roasting process obtains acid solution after spraying absorption, can return to be used for leaching process.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification sheets just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The scope of the claimed invention by the appended claims and their equivalents defined
.
Claims (2)
1. the preparation method of a ultrafine copper oxide powder; It is characterized in that; With the copper mine is raw material, adopts spray roasting to prepare the ultrafine copper oxide powder, and the tail gas that produces in the spray roasting process simultaneously absorbs processing; Be back into the product system and recycle, and through the heavy granularity of controlled oxidation copper for a long time of control dehydration, roasting and crystal.
2. the preparation method of a kind of ultrafine copper oxide powder according to claim 1 is characterized in that, its concrete operations step is:
One, select materials: the employing copper mine is a raw material, after leaching reaction, obtains the solution of mantoquita, and this copper salt solution is cupric chloride, copper sulfate or copper nitrate solution;
Two, spray: above-mentioned copper salt solution is sprayed obtains the spray droplet of mantoquita;
Three, calcining: under air or oxygen atmosphere, place the High Temperature Furnaces Heating Apparatus of 450 degree-1100 degree to calcine above-mentioned spray droplet, obtain the ultrafine copper oxide powder, emit the tail gas of containing water vapor, sour gas simultaneously;
Four, tail gas absorbs: the tail gas that produces in the high-temperature calcination process is sprayed absorption, obtain acid solution, this acid solution can be back to the reaction in the process noted earlier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101989169A CN102408123A (en) | 2011-07-16 | 2011-07-16 | Preparation method of superfine copper oxide powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101989169A CN102408123A (en) | 2011-07-16 | 2011-07-16 | Preparation method of superfine copper oxide powder |
Publications (1)
| Publication Number | Publication Date |
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| CN102408123A true CN102408123A (en) | 2012-04-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2011101989169A Pending CN102408123A (en) | 2011-07-16 | 2011-07-16 | Preparation method of superfine copper oxide powder |
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| CN (1) | CN102408123A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036174A (en) * | 2015-07-10 | 2015-11-11 | 安鹏九 | Production method for submicron electronic-grade copper oxide powder |
| CN109835938A (en) * | 2019-03-20 | 2019-06-04 | 金川集团股份有限公司 | A kind of device and its application method for copper nitrate solution spray pyrolysis |
| CN112939054A (en) * | 2021-01-19 | 2021-06-11 | 昆明理工大学 | Device and method for preparing copper oxide by using copper nitrate and treating tail gas of copper oxide |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101346305A (en) * | 2005-12-27 | 2009-01-14 | 朱马国际公司 | Methods for production of metal oxide nano particles, and nano particles and preparations produced thereby |
| CN101367555A (en) * | 2008-09-27 | 2009-02-18 | 浙江华友钴业股份有限公司 | Novel methods for preparing cobalt oxide, nickel oxide and copper oxide |
-
2011
- 2011-07-16 CN CN2011101989169A patent/CN102408123A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101346305A (en) * | 2005-12-27 | 2009-01-14 | 朱马国际公司 | Methods for production of metal oxide nano particles, and nano particles and preparations produced thereby |
| CN101367555A (en) * | 2008-09-27 | 2009-02-18 | 浙江华友钴业股份有限公司 | Novel methods for preparing cobalt oxide, nickel oxide and copper oxide |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036174A (en) * | 2015-07-10 | 2015-11-11 | 安鹏九 | Production method for submicron electronic-grade copper oxide powder |
| CN109835938A (en) * | 2019-03-20 | 2019-06-04 | 金川集团股份有限公司 | A kind of device and its application method for copper nitrate solution spray pyrolysis |
| CN112939054A (en) * | 2021-01-19 | 2021-06-11 | 昆明理工大学 | Device and method for preparing copper oxide by using copper nitrate and treating tail gas of copper oxide |
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Application publication date: 20120411 |