CN103553114A - Preparation method of high-purity copper oxide powder material - Google Patents
Preparation method of high-purity copper oxide powder material Download PDFInfo
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- CN103553114A CN103553114A CN201310571018.2A CN201310571018A CN103553114A CN 103553114 A CN103553114 A CN 103553114A CN 201310571018 A CN201310571018 A CN 201310571018A CN 103553114 A CN103553114 A CN 103553114A
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Abstract
The invention discloses a method for preparing a high-purity copper oxide powder material, belonging to the field of high-performance functional materials. The raw material for preparing the high-purity copper oxide powdery material is red copper wires or red copper rods. The preparation method comprises the steps of cutting recovered waste red copper wires or red copper rods into small pieces, heating the small pieces in a rotary furnace embedded with a pure copper lining plate or high-temperature-resisting stainless copper lining plate, putting red copper balls into the rotary furnace to serve as grinding balls at the same time, starting to inflate oxygen into the rotary furnace when the rotary furnace is heated to a certain temperature to ensure that copper is in full contact with the oxygen under a high-temperature condition to generate an oxidation reaction, and fully crushing copper oxide generated through the reaction under the action of the grinding balls at the same time, thereby obtaining the high-purity copper oxide powder material. The method disclosed by the invention is simple in production process and low in production cost, and the oxidation of copper and the crushing of copper oxide are performed at the same time, so that the process flow is effectively shortened. Impurities are not introduced during processing and preparation, so that the obtained copper oxide powder material is high in purity which can reach more than 99%.
Description
Technical field:
A kind of method of preparing high-purity copper oxide powder material provided by the invention, belongs to performance function Material Field.
Background technology:
Cupric oxide is a kind of important transiting group metal elements oxide compound, has good catalysis and electrode activity.Be widely used in glass, pottery, fuel, catalyst and manufacture other mantoquitas.Cupric oxide, as the burningrate catalyst of solid rocket propellant, can not only improve combustion speed, reduces Pressure Exponent, and AP compositepropellent is also had to good catalytic effect; In addition,, because cupric oxide has higher catalytic activity to the complete oxidation of carbon monoxide, be expected to the scavenging material as vehicle exhaust.The intrinsic effect of high-purity copper oxide powder material is more obvious, has stronger functional than general powder.Therefore, prepare the hot issue that high-purity copper oxide powder material has become vast scholar's research.At present, the preparation method of high-purity copper oxide powder material is main mainly with chemical synthesis process, as Low Temperature Solid-Phase coordination chemistry method, sonochemistry method, the hot method of alcohol, improved sol-gel processing, quick liquid-phase precipitation method etc.When having its own advantages, these methods also have weak point.Preparation cost is high, technical process is complicated, consumption of chemical agent is large and environmental pollution seriously becomes the basic reason that restriction aforesaid method is realized industrialization.Therefore develop a kind of with low costly, simple to operate, it is convenient to process, and reaction conditions is gentle, environmental friendliness, and the high-purity copper oxide powder material that is easy to suitability for industrialized production is significant.If can be raw material with the old and useless red copper material reclaiming, put into particular device, meet the condition of oxidation and powder process simultaneously; oxidation and powder process are carried out simultaneously; directly preparation generates high-purity copper oxide powder, will save a large amount of tooling costs, and be conducive to the protection of environment.
Rotary kiln is a kind of heating installation, rolls that it is more even that material is heated by material in burner hearth, if under this condition, be filled with oxygen, just can make red copper material contact with oxygen in burner hearth oxidizing reaction occurs, and forms cupric oxide coarse particles; If put into abrading-ball in burner hearth, cupric oxide coarse particles will be ground to formation powder.For fear of sneaking into of impurity, abrading-ball is selected red copper ball, and inboard wall of burner hearth is inlayed copper sheet or high temperature resistant stainless steel plate.This patent adopts the rotary kiln through above-mentioned processing, make the oxidation of copper and the pulverizing of cupric oxide be prepared cupric oxide powder simultaneously, both shorten preparation technology's flow process, cut down finished cost, also avoided the pollution of acid (alkalescence) material to environment in chemical synthesis process.
Summary of the invention:
The invention provides a kind of method of preparing high-purity copper oxide powder material, adopt rotary kiln as production unit, fine copper liner plate or high temperature resistant stainless steel liner plate are inlayed in furnace wall, and in stove, put red copper abrading-ball, make the oxidation of copper and the pulverizing of cupric oxide be prepared cupric oxide powder simultaneously.Its raw material is old and useless red copper line or the red copper bar reclaiming.Not only preparation process technical process is short for this method, and does not need acidity (alkalescence) medicament, environmentally friendly.Cupric oxide powder material purity >=99% of preparation.
The present invention is for achieving the above object, and the scheme of employing is:
1) take old and useless red copper line or red copper bar as raw material, after cleaning, be cut into fritter, its volume is less than 1 cubic centimetre.
2) ready fritter is put into the rotary kiln heating that is inlaid with fine copper liner plate or high temperature resistant stainless steel liner plate (liner plate thickness >=10mm), in stove, put into red copper abrading-ball simultaneously, the large, medium and small ratio of abrading-ball is 2:3:5, large spherical diameter 60-100mm wherein, middle spherical diameter 30-50mm, the small ball's diameter 15-25mm, the 1-3 that dress ball weight is weight of material doubly.In stove, total loading capacity is the 20%-35% of rotary kiln volume.Rotary kiln rotating speed is 3-90r/min, when being heated to 200 ℃, is filled with oxygen, and oxygen flow is 2-50m
3/ h, oxidizing temperature is 400-900 ℃, oxidization time is 20-600min.
3) with vibratory screening apparatus, abrading-ball is separated with cupric oxide powder, cooling rear acquisition cupric oxide powder material.
4) in rotary kiln, copper and oxygen reaction process are expressed as follows with chemical equation:
2Cu+O
2=2CuO (1)
Raw material described in the present invention is old and useless red copper line or red copper bar.Content >=99% of copper in red copper wire (or red copper bar).
Advantage of the present invention and positively effect, be embodied in:
1) chemical synthesis process of preparing high-purity copper oxide powder material with tradition is compared, and has reduced or eliminated the use of chemical agent, as acid, and alkali, salt etc., can not pollute environment.
2) in rotary kiln, add red copper abrading-ball, the oxidation of copper and the grinding of the rear powder of cupric oxide generation are carried out simultaneously, effectively shortened technical process.
3) by furnace wall, inlay fine copper liner plate or high temperature resistant stainless steel liner plate and use the methods such as red copper abrading-ball to guarantee in processing preparation process that inclusion-free is introduced, cupric oxide powder purity >=99% prepared by the method.
Accompanying drawing explanation:
Fig. 1 is the X-ray diffraction spectrum of the embodiment of the present invention one gained cupric oxide powder.
Fig. 2 is the X-ray diffraction spectrum of the embodiment of the present invention two gained cupric oxide powders.
Embodiment:
Below in conjunction with specific embodiment, high-purity copper oxide powder preparation method of the present invention is further described.
Embodiment mono-
1) by the red copper lead removal coat of paint of Ф 2mm, after cleaning, with shears, being cut into length is 5-10mm fritter, and weight is 200Kg.
2) fritter of preparation is put into the rotary kiln that is inlaid with fine copper liner plate and heated, liner plate thickness is 12mm; Pack red copper abrading-ball 600Kg into, the weight 120Kg of diameter 60mm wherein, the weight 180Kg of diameter 45mm, the weight 300Kg of diameter 25mm; In stove, loading capacity is between 20%-35%; Oxidizing temperature is 500 ℃; Rotary kiln rotating speed is 20r/min; Oxidization time is 240min; When being heated to 200 ℃, be filled with oxygen, oxygen flow is 15m
3/ h.
3) with vibratory screening apparatus, abrading-ball is separated with cupric oxide powder, cooling rear acquisition cupric oxide powder material.
Adopt X-ray diffraction spectrum to characterize products therefrom in the present embodiment, as shown in Figure 1.As can be seen from the figure, inclusion-free in product, is pure cupric oxide (consistent with 05-0661JCPDS card).In 2 θ=35.512
0, 61.612
0there is the characteristic diffraction peak of obvious monocline CuO at place, wherein in 2 θ=35.512
0, the diffraction peak at d=2.5257nm place is highest peak, crystallization is complete to show CuO powder, and composition is single.
Embodiment bis-
1) by the red copper bar of Ф 10mm, it is 5-10mm fritter that water is cut into length with shears after cleaning, and weight is 500Kg.
2) fritter of preparation is put into the rotary kiln that is inlaid with high temperature resistant stainless steel (310s) liner plate and heated, liner plate thickness is 10mm; Pack red copper ball 500Kg into, the weight 100Kg of diameter 60mm wherein, the weight 150Kg of diameter 45mm, the weight 250Kg of diameter 25mm; In stove, loading capacity is between 20%-35%; Oxidizing temperature is 900 ℃; Rotary kiln rotating speed is 5r/min; Oxidization time is 600min; When being heated to 200 ℃, be filled with oxygen, oxygen flow is 10m
3/ h.
3) with vibratory screening apparatus, abrading-ball is separated with cupric oxide powder, cooling rear acquisition cupric oxide powder material.
Adopt X-ray diffraction spectrum to characterize products therefrom in the present embodiment, as shown in Figure 2.As can be seen from the figure, inclusion-free in product, is pure cupric oxide (consistent with 05-0661JCPDS card).
Claims (7)
1. the preparation method of a high-purity copper oxide powder material, its preparation process is: the raw materials such as the old and useless red copper line after cleaning or red copper bar are cut into fritter, the rotary kiln of putting into through transformation heats, put into abrading-ball, be filled with oxygen, copper is fully reacted under hot conditions with oxygen, and simultaneous reactions product is also polished acquisition high-purity copper oxide powder material.
2. the preparation method of cupric oxide powder material according to claim 1, is characterized in that the oxidation of copper and the formation of cupric oxide powder carries out simultaneously.
3. the preparation method of cupric oxide powder material according to claim 1, is characterized in that oxidizing temperature is 400-900 ℃; Rotary kiln rotating speed is 3-90r/min; Oxidization time is 20-600min; Oxygen flow is 2-50m
3/ h.
4. the preparation method of cupric oxide powder material according to claim 1, is characterized in that rotary kiln inner lining material is fine copper or high temperature resistant stainless steel, and thickness is greater than 10mm, and loading capacity is the 20%-35% of rotary kiln volume; The abrading-ball of putting into is red copper ball, and its volume is greater than 1 cubic centimetre, is less than 100 cubic centimetres; The large, medium and small ratio of abrading-ball is 2:3:5, large spherical diameter 60-100mm, middle spherical diameter 30-50mm, the small ball's diameter 15-25mm; Ratio of grinding media to material is 1:1-3:1.
5. the preparation method of cupric oxide powder material according to claim 1, while it is characterized in that rotary kiln is heated to 200 ℃, starts to be filled with oxygen, oxygen purity >=90%.
6. the preparation method of cupric oxide powder material according to claim 1, is characterized in that material purity >=99%, and the volume that is cut into fritter is less than 1 cubic centimetre.
7. cupric oxide powder material according to claim 1, is characterized in that processing preparation process inclusion-free and introduces, purity >=99% of cupric oxide powder material.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104591258A (en) * | 2015-02-08 | 2015-05-06 | 福建紫鑫金属材料科技有限公司 | Method for producing oxide copper powder from copper sand |
| CN104724749A (en) * | 2015-03-17 | 2015-06-24 | 深圳市中冠环保科技有限公司 | Method for producing superfine copper oxide powder |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102275974A (en) * | 2011-05-13 | 2011-12-14 | 刘彬彬 | Preparation method of ultra-micrometer copper oxide powdery material |
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- 2013-11-15 CN CN201310571018.2A patent/CN103553114A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102275974A (en) * | 2011-05-13 | 2011-12-14 | 刘彬彬 | Preparation method of ultra-micrometer copper oxide powdery material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104591258A (en) * | 2015-02-08 | 2015-05-06 | 福建紫鑫金属材料科技有限公司 | Method for producing oxide copper powder from copper sand |
| CN104724749A (en) * | 2015-03-17 | 2015-06-24 | 深圳市中冠环保科技有限公司 | Method for producing superfine copper oxide powder |
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Application publication date: 20140205 |