CN104150522A - Method for preparing cuprous oxide by using dry process - Google Patents
Method for preparing cuprous oxide by using dry process Download PDFInfo
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- CN104150522A CN104150522A CN201410200331.XA CN201410200331A CN104150522A CN 104150522 A CN104150522 A CN 104150522A CN 201410200331 A CN201410200331 A CN 201410200331A CN 104150522 A CN104150522 A CN 104150522A
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- red copper
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Abstract
The invention discloses a method for preparing cuprous oxide by using a dry process, which is implemented by taking copper powder as a raw material through the steps of after metallic copper and copper oxide powder are prepared according to the principle of disproportionation reaction, feeding the metallic copper and the copper oxide powder into a specially-made stainless steel roasting tank; hoisting the roasting tank into an electric roaster to calcine under airtight conditions; and crushing the obtained material into a 400-600-mesh material by using a crusher, conveying the 400-600-mesh material to the inside of a cuprous oxide finished product mixer while crushing, and in the process of mixing, spraying 0.1% of an antioxidant until the 400-600-mesh material is mixed uniformly, then putting down the obtained product and packaging the obtained product, so that a cuprous oxide product is obtained. According to the invention, a common iron tank used in a conventional dry process is changed into a stainless steel roasting tank, so that the charging amount per tank is increased from original 18 kg to 250 kg, thereby not only avoiding iron impurities brought in by the common iron tank but also greatly improving the stability of products. According to the invention, the electric roaster replaces a coke roaster used in a traditional dry process, so that both an effect of energy conservation and emissions reduction is achieved, and the color consistency of products is improved; because the tank is heated uniformly, original overburning and underburning phenomena are avoided.
Description
Technical field
The present invention relates to a kind of preparation method of Red copper oxide, be specifically related to a kind of method of dry process Red copper oxide.
Background technology
Cuprous oxide powder purposes is very extensive, is used as marine antifouling primer base sterilant in coatings industry; In glass industry, be used as red glass and red enamel tinting material; In agricultural, be used as sterilant; In addition, it also can be used as coating, plastic and glass surface modifying material and organic industry catalyzer etc.In the copper compound that Japan produces, production and marketing quantity growth is Red copper oxide the most rapidly, and the eighties in 20th century, annual sales just reached 5000t, and its sales volume is also in continuous expansion at present.The annual turnover of China's Red copper oxide is more than 400t.
The industrial method of producing Red copper oxide mainly contains in dry method, wet method and electrolytic process 3, in the majority with wet processing, but the Red copper oxide product granularity that at present a lot of wet method preparation process are prepared is thin, causes the impurity in product to be not easy to wash, thereby affects the purity of product; Obtain highly purified Red copper oxide and want thorough removal of contamination, need a large amount of rinse water to carry out washing repeatedly, not only can increase production cost and also can have a strong impact on production efficiency.
The shortcoming that traditional dry process exists is: (1) adopts common iron flask as batch can, and capacity is little, and iron flask can be brought iron filings impurity into, and product purity is low; (2) adopt coke stoving oven to calcine, tank body is heated inhomogeneous, easily occurs burning or burns less phenomenon, and product color is inconsistent.
Summary of the invention
The object of the invention is to provide that a kind of production efficiency is high, cost is low, and product purity is high, the method for the uniform dry process Red copper oxide of color and luster.
For achieving the above object, the technical solution used in the present invention is: a kind of method of dry process Red copper oxide, comprises the steps:
(1) taking copper powder as raw material, will be wherein a part of copper powder after drying in oven as metallic copper; Another part copper powder is sent into and in oxidized still, is oxidizing to reduction ratio at 70%～90% cupric oxide powder, metallic copper and cupric oxide powder are pressed to reduction ratio 98 ± 0.5% preparations;
(2) work in-process that prepared in 250 ± 5kg step (1) are packed in special stainless steel roasting pot into the then headkerchief of stainless steel roasting pot;
(3) the stainless steel roasting pot that installs material is hung in electric roasting furnace, set 450～650 DEG C of furnace temperature, roasting time 5～7 hours, closes bell, and starts transmission mechanism simultaneously;
(4) roasting finishes rear powered-down, opens electric roasting furnace bell, takes junctor apart, and stainless steel roasting pot is winched on cooling vehicle, stainless steel roasting pot is pushed into cooling zone and is cooled to normal temperature;
(5) the stainless steel roasting pot that is cooled to normal temperature is winched to discharging platform, by automatic discharge apparatus, the material after calcining is gone out in Red copper oxide feed bin to be pulverized;
(6) utilize pulverizer by crushing material to 400～600 order in Red copper oxide feed bin to be pulverized, pulverizing limit, limit is delivered in Red copper oxide finished product amalgamator;
(7) while spraying 0.1% oxidation inhibitor to uniform mixing under the state mixing and stirring in the twist of finished product amalgamator, put down packaging, complete the preparation of cuprous oxide powder.
Preferably, in described step (1), the reduction ratio of cupric oxide powder is 80%; In described step (3), set 600 DEG C of furnace temperature, roasting time 6 hours; In described step (6), utilize pulverizer by crushing material to 500 order in Red copper oxide feed bin to be pulverized.
Because technique scheme is used, the present invention compared with prior art has following advantages:
1. the common iron flask that the present invention uses conventional dry technique changes stainless steel roasting pot into, and every tank Intake Quantity increases to 250kg by original 18kg, has not only avoided common iron flask to bring the iron filings impurity of product into, and has greatly improved the stability of product.
2. the present invention has replaced the coke stoving oven of conventional dry technique with electric roasting furnace, has not only reached the effect of energy-saving and emission-reduction, and has improved the consistence of product color, because tank body is heated evenly, has avoided original burning and has burnt less phenomenon.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
Embodiment mono-: a kind of method of dry process Red copper oxide, comprises the steps:
(1) taking copper powder as raw material, will be wherein a part of copper powder after drying in oven as metallic copper; Another part copper powder is sent into and in oxidized still, is oxidizing to reduction ratio at 70%～90% cupric oxide powder, metallic copper and cupric oxide powder are pressed to reduction ratio 98 ± 0.5% preparations;
(2) work in-process that prepared in 250 ± 5kg step (1) are packed in special stainless steel roasting pot into the then headkerchief of stainless steel roasting pot;
(3) the stainless steel roasting pot that installs material is hung in electric roasting furnace, set 450～650 DEG C of furnace temperature, roasting time 5～7 hours, closes bell, and starts transmission mechanism simultaneously;
(4) roasting finishes rear powered-down, opens electric roasting furnace bell, takes junctor apart, and stainless steel roasting pot is winched on cooling vehicle, stainless steel roasting pot is pushed into cooling zone and is cooled to normal temperature, approximately needs 24 hours;
(5) the stainless steel roasting pot that is cooled to normal temperature is winched to discharging platform, by automatic discharge apparatus, the material after calcining is gone out in Red copper oxide feed bin to be pulverized;
(6) utilize pulverizer by crushing material to 400～600 order in Red copper oxide feed bin to be pulverized, pulverizing limit, limit is delivered in Red copper oxide finished product amalgamator;
(7) while spraying 0.1% oxidation inhibitor to uniform mixing under the state mixing and stirring in the twist of finished product amalgamator, put down packaging, complete the preparation of cuprous oxide powder.
Preferably, in described step (1), the reduction ratio of cupric oxide powder is 80%; In described step (3), set 600 DEG C of furnace temperature, roasting time 6 hours; In described step (6), utilize pulverizer by crushing material to 500 order in Red copper oxide feed bin to be pulverized.
The technical indicator of the present embodiment one output product cupric oxide is:
The common iron flask that the present invention uses conventional dry technique changes stainless steel roasting pot into, and every tank Intake Quantity increases to 250kg by original 18kg, has not only avoided common iron flask to bring the iron filings impurity of product into, and has greatly improved the stability of product.The present invention has replaced the coke stoving oven of conventional dry technique with electric roasting furnace, not only reached the effect of energy-saving and emission-reduction, and has improved the consistence of product color, because tank body is heated evenly, has avoided original burning and has burnt less phenomenon.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of principle of the present invention; can also make some improvement or replacement, these improvement or replacement also should be considered as protection scope of the present invention.
Claims (4)
1. a method for dry process Red copper oxide, is characterized in that, comprises the steps:
(1) taking copper powder as raw material, will be wherein a part of copper powder after drying in oven as metallic copper; Another part copper powder is sent into and in oxidized still, is oxidizing to reduction ratio at 70%～90% cupric oxide powder, metallic copper and cupric oxide powder are pressed to reduction ratio 98 ± 0.5% preparations;
(2) work in-process that prepared in 250 ± 5kg step (1) are packed in special stainless steel roasting pot into the then headkerchief of stainless steel roasting pot;
(3) the stainless steel roasting pot that installs material is hung in electric roasting furnace, set 450～650 DEG C of furnace temperature, roasting time 5～7 hours, closes bell, and starts transmission mechanism simultaneously;
(4) roasting finishes rear powered-down, opens electric roasting furnace bell, takes junctor apart, and stainless steel roasting pot is winched on cooling vehicle, stainless steel roasting pot is pushed into cooling zone and is cooled to normal temperature;
(5) the stainless steel roasting pot that is cooled to normal temperature is winched to discharging platform, by automatic discharge apparatus, the material after calcining is gone out in Red copper oxide feed bin to be pulverized;
(6) utilize pulverizer by crushing material to 400～600 order in Red copper oxide feed bin to be pulverized, pulverizing limit, limit is delivered in Red copper oxide finished product amalgamator;
(7) while spraying 0.1% oxidation inhibitor to uniform mixing under the state mixing and stirring in the twist of finished product amalgamator, put down packaging, complete the preparation of cuprous oxide powder.
2. the method for a kind of dry process Red copper oxide according to claim 1, is characterized in that, in described step (1), the reduction ratio of cupric oxide powder is 80%.
3. the method for a kind of dry process Red copper oxide according to claim 1, is characterized in that, in described step (3), sets 600 DEG C of furnace temperature, roasting time 6 hours.
4. the method for a kind of dry process Red copper oxide according to claim 1, is characterized in that, in described step (6), utilizes pulverizer by crushing material to 500 order in Red copper oxide feed bin to be pulverized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410200331.XA CN104150522A (en) | 2014-05-14 | 2014-05-14 | Method for preparing cuprous oxide by using dry process |
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| CN201410200331.XA CN104150522A (en) | 2014-05-14 | 2014-05-14 | Method for preparing cuprous oxide by using dry process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105753034A (en) * | 2016-02-28 | 2016-07-13 | 桂林理工大学 | Preparation method of Cu2O nano film |
| CN107857583A (en) * | 2017-11-08 | 2018-03-30 | 陕西航空电气有限责任公司 | A kind of cuprous oxide semiconductor ceramic material and preparation method thereof |
| CN112047381A (en) * | 2019-06-05 | 2020-12-08 | 中国科学院大连化学物理研究所 | Cathode with crystal face preferentially exposed for solid oxide fuel cell and preparation method and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102320646A (en) * | 2011-09-09 | 2012-01-18 | 樊余杰 | Method for preparing copper oxide and cuprous oxide with waste copper foil |
-
2014
- 2014-05-14 CN CN201410200331.XA patent/CN104150522A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102320646A (en) * | 2011-09-09 | 2012-01-18 | 樊余杰 | Method for preparing copper oxide and cuprous oxide with waste copper foil |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105753034A (en) * | 2016-02-28 | 2016-07-13 | 桂林理工大学 | Preparation method of Cu2O nano film |
| CN107857583A (en) * | 2017-11-08 | 2018-03-30 | 陕西航空电气有限责任公司 | A kind of cuprous oxide semiconductor ceramic material and preparation method thereof |
| CN107857583B (en) * | 2017-11-08 | 2020-11-13 | 陕西航空电气有限责任公司 | Cuprous oxide semiconductor ceramic material and preparation method thereof |
| CN112047381A (en) * | 2019-06-05 | 2020-12-08 | 中国科学院大连化学物理研究所 | Cathode with crystal face preferentially exposed for solid oxide fuel cell and preparation method and application thereof |
| CN112047381B (en) * | 2019-06-05 | 2021-09-24 | 中国科学院大连化学物理研究所 | Cathode with crystal face preferentially exposed for solid oxide fuel cell and preparation method and application thereof |
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Application publication date: 20141119 |