CN106517337A - Method for producing ammonium paratungstate by utilizing low-degree tungstic through acid-base combining - Google Patents
Method for producing ammonium paratungstate by utilizing low-degree tungstic through acid-base combining Download PDFInfo
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- CN106517337A CN106517337A CN201611150690.4A CN201611150690A CN106517337A CN 106517337 A CN106517337 A CN 106517337A CN 201611150690 A CN201611150690 A CN 201611150690A CN 106517337 A CN106517337 A CN 106517337A
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- acid
- tungstic
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- ammonium paratungstate
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G41/00—Compounds of tungsten
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- Inorganic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The invention discloses a method for producing ammonium paratungstate by utilizing low-degree tungstic through acid-base combining. The method comprises the following steps of 1), carrying out acid decomposition and phosphorous removal treatment by utilizing scheelite below 30 degrees, wherein the temperature of a reaction kettle for the phosphorous removal treatment is maintained at 70 to 90 DEG C; keeping agitating for 1 hour, and adding hydrochloric acid into the reaction kettle, wherein the content ratio of the scheelite to the hydrochloric acid is 1 to (0.7 to 1.3); 2), decomposing tungstic acid: carrying out, in a tungstic acid decomposing tank, the decomposition on a solution obtained in the step 1); 3), carrying out alkali dissolution treatment, so as to obtain a sodium tungstate solution; 4), putting the sodium tungstate solution on an ion exchange column, so as to carry out ion exchange on the sodium tungstate solution in the step 3); 5), analyzing; 6), crystallizing; 7), oven-drying. According to the method for producing the ammonium paratungstate by utilizing the low-degree tungstic through the acid-base combining, the ammonium paratungstate is produced by utilizing an acid and alkali conjunct method; in comparison with an alkali boiling method in the prior art, by using the method for producing the ammonium paratungstate by utilizing the low-degree tungstic through the acid-base combining, the low-degree tungsten which is below 30 degrees can be treated; the production cost is greatly decreased.
Description
Technical field
The present invention relates to tungsten treatment technology, more particularly to a kind of side for combining production ammonium paratungstate using low wolframic acid alkali
Method.
Background technology
Tungsten is important non-ferrous metal, except mainly at aspects such as metallurgical manufacture steel alloys using in addition to, while changing
Work etc. is widely used in terms of other.Now with the scarcity of tungsten mineral resources, the continuous of this several years tungsten product prices is particularly
Go up, the also more and more higher of the requirement to tungsten treatment technology.Soda boiling is combined using height tungsten (generally 40～50 degree) typically at present
Producing ammonium paratungstate, this raw materials for production are relatively costly, increased enterprise's production capacity for method.
The content of the invention
Present invention aims to the above-mentioned not enough and defect of prior art, there is provided a kind of using low wolframic acid alkali knot
The method that ammonium paratungstate is produced in symphysis, to solve the above problems.
Technical problem solved by the invention can employ the following technical solutions to realize：
The method that production ammonium paratungstate is combined using low wolframic acid alkali, it is characterised in that comprise the following steps：
1) carry out acid using less than 30 degree of scheelite to decompose and dephosphorization process, the temperature of reaction kettle that wherein dephosphorization is processed is protected
Hold at 70～90 DEG C, be kept stirring for 1 hour, add hydrochloric acid, the wherein content of scheelite is 1 with the content ratio of hydrochloric acid:0.7～
1.3；
2) wolframic acid decompose, by step 1) the solution for obtaining decomposed in wolframic acid decomposer；
3) alkali soluble is processed, and obtains sodium tungstate solution；
4) ion exchange column on, to step 3) in sodium tungstate solution carry out ion exchange；
5) parse；
6) crystallize；
7) dry.
As a result of technical scheme as above, the present invention produces ammonium paratungstate using soda acid combination, with existing skill
The alkaline-heating method of art is compared, and the present invention can process less than 30 degree of low tungsten, greatly reduce production cost.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of an embodiment of the present invention.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the present invention is realized are easy to understand, enter below
One step illustrates the present invention.
Method shown in Figure 1, combining production ammonium paratungstate using low wolframic acid alkali, comprises the following steps：
1) carry out acid using less than 30 degree of scheelite to decompose and dephosphorization process, the temperature of reaction kettle that wherein dephosphorization is processed is protected
Hold at 70～90 DEG C, be kept stirring for 1 hour, add hydrochloric acid, the wherein content of scheelite is 1 with the content ratio of hydrochloric acid:0.7～
1.3；
2) wolframic acid decompose, by step 1) the solution for obtaining decomposed in wolframic acid decomposer；
3) alkali soluble is processed, and obtains sodium tungstate solution；
4) ion exchange column on, to step 3) in sodium tungstate solution carry out ion exchange；
5) parse；
6) crystallize；
7) dry.
The present invention produces ammonium paratungstate using soda acid combination, and compared with the alkaline-heating method of prior art, the present invention can be with
Less than 30 degree of low tungsten is processed, production cost is greatly reduced.
The ultimate principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel it should be appreciated that the present invention is not restricted to the described embodiments, the simply explanation described in above-described embodiment and description this
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes
Change and improvement is both fallen within scope of the claimed invention.The claimed scope of the invention by appending claims and its
Equivalent thereof.
Claims (1)
1. the method for combining production ammonium paratungstate using low wolframic acid alkali, it is characterised in that comprise the following steps：
1) carry out acid using less than 30 degree of scheelite to decompose and dephosphorization process, the temperature of reaction kettle that wherein dephosphorization is processed is maintained at
70～90 DEG C, it is kept stirring for 1 hour, adds hydrochloric acid, the wherein content of scheelite is 1 with the content ratio of hydrochloric acid:0.7～1.3；
2) wolframic acid decomposes, by step 1) the solution for obtaining carry out wolframic acid decomposer and decomposed；
3) alkali soluble is processed, and obtains sodium tungstate solution；
4) ion exchange column on, to step 3) in sodium tungstate solution carry out ion exchange；
5) parse；
6) crystallize；
7) dry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611150690.4A CN106517337A (en) | 2016-12-14 | 2016-12-14 | Method for producing ammonium paratungstate by utilizing low-degree tungstic through acid-base combining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611150690.4A CN106517337A (en) | 2016-12-14 | 2016-12-14 | Method for producing ammonium paratungstate by utilizing low-degree tungstic through acid-base combining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106517337A true CN106517337A (en) | 2017-03-22 |
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ID=58339333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611150690.4A Pending CN106517337A (en) | 2016-12-14 | 2016-12-14 | Method for producing ammonium paratungstate by utilizing low-degree tungstic through acid-base combining |
Country Status (1)
| Country | Link |
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| CN (1) | CN106517337A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109019690A (en) * | 2018-09-13 | 2018-12-18 | 江西省科学院应用物理研究所 | A kind of short flow process of rare-earth-doped modification ammonium paratungstate powder |
| CN109650452A (en) * | 2019-01-31 | 2019-04-19 | 陕西科技大学 | A method of ammonium paratungstate is prepared using low-grade synthetic scheelite |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4168296A (en) * | 1976-06-21 | 1979-09-18 | Lundquist Adolph Q | Extracting tungsten from ores and concentrates |
| US6051196A (en) * | 1998-02-09 | 2000-04-18 | Osram Sylvania Inc. | Purification of phosphorus containing scheelite ore |
| CN102080157A (en) * | 2010-12-24 | 2011-06-01 | 中南大学 | Method for decomposing scheelite |
-
2016
- 2016-12-14 CN CN201611150690.4A patent/CN106517337A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4168296A (en) * | 1976-06-21 | 1979-09-18 | Lundquist Adolph Q | Extracting tungsten from ores and concentrates |
| US6051196A (en) * | 1998-02-09 | 2000-04-18 | Osram Sylvania Inc. | Purification of phosphorus containing scheelite ore |
| CN102080157A (en) * | 2010-12-24 | 2011-06-01 | 中南大学 | Method for decomposing scheelite |
Non-Patent Citations (3)
| Title |
|---|
| 廖利波: "白钨矿酸法处理新工艺研究", 《中国优秀博硕士学位论文全文数据库（硕士） 工程科技I辑》 * |
| 胡桂朝 等: "离子交换法仲钨酸铵生产工艺", 《广西化工》 * |
| 许菱 等: "白钨精矿的酸浸及杂多钨酸盐的生产", 《中国钨业》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109019690A (en) * | 2018-09-13 | 2018-12-18 | 江西省科学院应用物理研究所 | A kind of short flow process of rare-earth-doped modification ammonium paratungstate powder |
| CN109019690B (en) * | 2018-09-13 | 2020-07-03 | 江西省科学院应用物理研究所 | Short-process preparation method of rare earth doped modified ammonium paratungstate powder |
| CN109650452A (en) * | 2019-01-31 | 2019-04-19 | 陕西科技大学 | A method of ammonium paratungstate is prepared using low-grade synthetic scheelite |
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Application publication date: 20170322 |
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