CN115072917A - Efficient treatment method for high-concentration ammonia nitrogen wastewater in tungsten smelting - Google Patents
Efficient treatment method for high-concentration ammonia nitrogen wastewater in tungsten smelting Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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Abstract
The invention relates to the field of tungsten-molybdenum smelting three-waste treatment, and relates to a high-efficiency treatment method of high-concentration ammonia nitrogen wastewater in tungsten smelting, which comprises the steps of collecting the high-concentration ammonia nitrogen wastewater, adjusting the pH value, performing precise filtration, distilling to remove ammonia nitrogen, secondarily and deeply removing ammonia nitrogen, adjusting the pH value, adsorbing by D318 resin, adjusting the pH value and the like. The method comprises the steps of firstly collecting high-concentration ammonia nitrogen wastewater, collecting according to an output source, completing collection, adjusting pH to be more than or equal to 12 with liquid caustic soda, then performing precise filtration, removing suspended matters in the wastewater, then performing deep deamination and denitrification through distillation, discharging water after deamination and denitrification, then performing secondary deep ammonia nitrogen removal according to a detection result, adjusting the pH value to be 4-5, and then adsorbing valuable metal WO 318 resin with D318 resin 3 And Mo, adjusting the pH value of the adsorbed solution to 6-9 by using liquid alkali, and discharging the solution after reaching the standard to finish the high-efficiency treatment of the tungsten smelting high-concentration ammonia nitrogen wastewater.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of tungsten-molybdenum smelting three-waste treatment, in particular to a high-efficiency treatment method of high-concentration ammonia nitrogen wastewater in tungsten smelting.
[ background of the invention ]
Tungsten and molybdenum are strategic metals and play an important role in national defense industry, chemical industry, textile industry and major capital construction industry. In the tungsten-molybdenum smelting process, ammonia (precursor, ammonium paratungstate, ammonium molybdate and the like) is introduced, so that the smelting wastewater contains ammonia nitrogen, the treatment difficulty is high, the cost is high, and the development of tungsten-molybdenum smelting enterprises is limited.
Aiming at the problem of difficult treatment of ammonia nitrogen wastewater generated in tungsten-molybdenum smelting, the invention develops a high-efficiency treatment method of high-concentration ammonia nitrogen wastewater in tungsten smelting, which realizes the deep removal of ammonia nitrogen in the high-concentration ammonia nitrogen wastewater and simultaneously completes the treatment of WO 318 resin adsorption in feed liquid by the steps of collecting the high-concentration ammonia nitrogen wastewater, adjusting the pH value, precisely filtering, distilling to remove ammonia nitrogen, secondarily and deeply removing ammonia nitrogen, adjusting the pH value, and adjusting the pH value 3 And high-efficiency extraction of Mo.
[ summary of the invention ]
The invention aims to overcome the defects of the prior art and provides a high-efficiency treatment method of high-concentration ammonia nitrogen wastewater in tungsten smelting 3 And extracting Mo.
The invention discloses a high-efficiency treatment method of high-concentration ammonia nitrogen wastewater in tungsten smelting, which comprises the following steps:
(1) collecting high-concentration ammonia nitrogen wastewater: the collected high-concentration ammonia nitrogen wastewater comprises crystallization mother liquor, crystallization waste gas condensate water, ion exchange first-stage liquor and four-stage liquor, the ammonia-prepared zone collects water, calcium chloride precipitated tungsten, molybdenum mother liquor, N1923 regenerated liquor, N263 alkaline extraction excess raffinate and the like, the concentrated solution and the mixed solution are intensively mixed, and the mixture enters the next link after the mixing is finished.
(2) Adjusting the pH value: and (2) adding liquid caustic soda (NaOH solution) into the feed liquid obtained in the step (1), adjusting the pH value, controlling the pH value of the collected high-concentration ammonia nitrogen wastewater to be more than 12 after mixing, and entering the next link after the pH value adjustment is finished.
(3) And (3) precise filtration: and (3) performing precision filtration on the treated feed liquid to remove suspended matters, controlling the aperture of a filter element to be less than 10um, finishing the precision filtration and entering the next link.
(4) And (3) distilling to deeply remove ammonia nitrogen: the feed liquid treated in the step (3) enters a distillation tower, the low temperature of the distillation tower is controlled to be 103-105 ℃, the temperature of the tower top is controlled to be 90-96 ℃, circulating water is used for spraying from the tower top, and the flow is controlled to be 0.5-1.5m 3 H is used as the reference value. Controlling the ammonia nitrogen concentration of the distilled water to be less than 25ppm and the PH value to be 9-11, completing the distillation, and entering the next link.
(5) Secondary deep ammonia nitrogen removal: and (4) adding sodium hypochlorite into the feed liquid treated in the step (4), and secondarily and deeply removing ammonia nitrogen, wherein the ammonia nitrogen concentration is less than 15ppm at the reaction end point, and the secondary and deep ammonia nitrogen removal is finished and the next link is carried out.
(6) Adjusting the pH value: and (5) adjusting the pH value of the feed liquid treated in the step (5) by hydrochloric acid, controlling the end-point pH value to be 4-5, adjusting the pH value, and entering the next link.
(7) D318 resin adsorption: adsorbing the valuable metal WO by D318 resin on the feed liquid treated in the step (6) 3 And Mo, the adsorption flow rate is 1-2BV/h, and WO is controlled in the adsorbed liquid 3 Less than 0.02g/L, circularly desorbing with liquid caustic soda after adsorption saturation, wherein the NaOH concentration is 80-120g/L, regenerating with 5% hydrochloric acid after desorption, washing after regeneration, and then entering the next period of adsorption. And (5) adsorbing the liquid, and entering the next link.
(8) Adjusting the pH value: and (5) adjusting the pH value of the feed liquid treated in the step (7) to 6-9 by using liquid caustic soda, and discharging the feed liquid after reaching the standard.
Compared with the prior art, the invention has the following advantages:
the high-efficiency deep removal of ammonia nitrogen from the high-concentration ammonia nitrogen-containing wastewater in tungsten molybdenum smelting is completed by the steps of high-concentration ammonia nitrogen wastewater collection, pH value adjustment, precise filtration, ammonia nitrogen removal by distillation, secondary deep ammonia nitrogen removal, pH value adjustment, D318 resin adsorption and pH value adjustment, and the WO in the feed liquid is completed 3 The method for efficiently extracting Mo is a method for efficiently treating high-concentration ammonia nitrogen wastewater in tungsten and molybdenum smelting.
[ description of the drawings ]
The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings, in which:
FIG. 1 is a process flow diagram of the present invention;
[ detailed description ] embodiments
The invention is further illustrated by the following example and by the accompanying figure 1.
Example 1
In this embodiment, the high-concentration ammonia-nitrogen wastewater from tungsten smelting comes from a certain tungsten-molybdenum smelting plant, and the sampling and detecting result is WO 3 1.63g/L，Mo 0.3g/L、NH 3 -N 10046.59ppm。
(1) Collecting high-concentration ammonia nitrogen wastewater: the collected high-concentration ammonia nitrogen wastewater comprises crystallization mother liquor, crystallization waste gas condensate water, ion exchange first-stage liquor and four-stage liquor, the ammonia-prepared zone collects water, calcium chloride precipitated tungsten, molybdenum mother liquor, N1923 regenerated liquor, N263 alkaline extraction excess raffinate and the like, the concentrated solution and the mixed solution are intensively mixed, and the mixture enters the next link after the mixing is finished.
(2) Adjusting the pH value: and (2) adding liquid caustic soda (NaOH solution) into the feed liquid obtained in the step (1), adjusting the pH value, controlling the pH value of the collected high-concentration ammonia nitrogen wastewater after mixing to be 12.5, and entering the next link after the pH value adjustment is finished.
(3) And (3) precise filtration: the feed liquid treated in the step (2) is subjected to precise filtration to remove suspended matters, the aperture of a filter element is controlled to be less than 10um, and the filtering flow rate is 10m 3 And h, finishing the precision filtration and entering the next link.
(4) And (3) distilling to deeply remove ammonia nitrogen: feeding the feed liquid treated in the step (3) into a distillation tower, controlling the low temperature of the distillation tower at 105 ℃ and the temperature of the top of the distillation tower at 95 ℃, spraying circulating water from the top of the distillation tower, and controlling the flow to be 1.0m 3 H is used as the reference value. Controlling the ammonia nitrogen concentration of the distilled water to be 20.31ppm and the PH value to be 10, completing the distillation, and entering the next link.
(5) Secondary deep ammonia nitrogen removal: and (4) adding sodium hypochlorite into the feed liquid treated in the step (4), and deeply removing ammonia nitrogen for the second time, wherein the ammonia nitrogen concentration is 11.23ppm at the end point of the reaction, and the deeply removing ammonia nitrogen for the second time is finished and the next link is started.
(6) Adjusting the pH value: and (5) adjusting the pH value of the feed liquid treated in the step (5) by using hydrochloric acid, controlling the end-point pH value to be 4.5, adjusting the pH value, and entering the next link.
(7) D318 resin adsorption: adsorbing the valuable metal WO by D318 resin on the feed liquid treated in the step (6) 3 And Mo, the adsorption flow rate is 1.5BV/h, and WO is controlled in the adsorbed liquid 3 Less than 0.02g/L, circularly desorbing with liquid caustic soda after adsorption saturation, wherein the NaOH concentration is 80g/L, regenerating with 5% hydrochloric acid after desorption, washing after regeneration, and then entering the next period of adsorption. And (5) adsorbing the liquid, and entering the next link.
(8) Adjusting the pH value: and (5) adjusting the pH value of the feed liquid treated in the step (7) to 6-9 by using liquid caustic soda, and discharging the feed liquid after the feed liquid reaches the standard.
Example 2
In this embodiment, the high-concentration ammonia-nitrogen wastewater from tungsten smelting comes from a certain tungsten-molybdenum smelting plant, and the sampling and detecting result is WO 3 1.36g/L，Mo 0.41g/L、NH 3 -N 9875.43ppm。
(1) Collecting high-concentration ammonia nitrogen wastewater: the collected high-concentration ammonia nitrogen wastewater comprises crystallization mother liquor, crystallization waste gas condensate water, ion exchange first-stage liquor and four-stage liquor, the ammonia-prepared zone collects water, calcium chloride precipitated tungsten, molybdenum mother liquor, N1923 regenerated liquor, N263 alkaline extraction excess raffinate and the like, the concentrated solution and the mixed solution are intensively mixed, and the mixture enters the next link after the mixing is finished.
(2) Adjusting the pH value: and (2) adding liquid caustic soda (NaOH solution) into the feed liquid obtained in the step (1), adjusting the pH value, controlling the pH value of the collected high-concentration ammonia nitrogen wastewater after mixing to be 13, and entering the next link after completing the pH value adjustment.
(3) And (3) precise filtration: the feed liquid treated in the step (2) is subjected to precise filtration to remove suspended matters, the aperture of a filter element is controlled to be less than 10um, and the filtering flow rate is 10.5m 3 And h, finishing the precision filtration and entering the next link.
(4) And (3) distilling to deeply remove ammonia nitrogen: feeding the feed liquid treated in the step (3) into a distillation tower, controlling the low temperature of the distillation tower at 103 ℃ and the temperature of the top of the distillation tower at 96 ℃, spraying circulating water from the top of the distillation tower, and controlling the flow to be 0.8m 3 H is used as the reference value. Controlling the ammonia nitrogen concentration of the distilled water to be 22.43ppm and the PH value to be 10, completing the distillation, and entering the next link.
(5) Secondary deep ammonia nitrogen removal: and (5) adding sodium hypochlorite into the feed liquid treated in the step (4), and deeply removing ammonia nitrogen for the second time, wherein the ammonia nitrogen concentration is 9.25ppm at the end point of the reaction, and the ammonia nitrogen is removed for the second time, and entering the next link.
(6) Adjusting the pH value: and (5) adjusting the pH value of the feed liquid treated in the step (5) by using hydrochloric acid, controlling the end-point pH value to be 4.5, adjusting the pH value, and entering the next link.
(7) D318 resin adsorption: adsorbing the valuable metal WO by D318 resin on the feed liquid treated in the step (6) 3 Mo, the adsorption flow rate is 2BV/h, and WO is controlled in the solution after adsorption 3 Less than 0.02g/L, circularly desorbing with liquid caustic soda after adsorption saturation, wherein the NaOH concentration is 100g/L, regenerating with 5% hydrochloric acid after desorption, washing after regeneration, and then entering the next period of adsorption. And (5) adsorbing the liquid, and entering the next link.
(8) Adjusting the pH value: and (4) adjusting the pH value of the feed liquid treated in the step (7) to 7.0 by using liquid caustic soda, and discharging the feed liquid after reaching the standard.
The above description is only a preferred embodiment of the present invention, and it should be noted that a person skilled in the art can make various changes, modifications, substitutions and alterations to the embodiments without departing from the technical principles of the present invention, and such changes, modifications, substitutions and alterations should also be regarded as the protection scope of the present invention.
Claims (1)
1. A high-efficiency treatment method of high-concentration ammonia nitrogen wastewater in tungsten smelting is characterized by comprising the following steps: comprises the following steps:
(1) collecting high-concentration ammonia nitrogen wastewater: the collected high-concentration ammonia nitrogen wastewater comprises crystallization mother liquor, crystallization waste gas condensate water, ion exchange first-stage liquor and four-stage liquor, the ammonia-prepared zone collects water, calcium chloride precipitated tungsten, molybdenum mother liquor, N1923 regenerated liquor, N263 alkaline extraction excess raffinate and the like, the concentrated mixing is completed, and the next link is entered;
(2) adjusting the pH value: adding liquid caustic soda (NaOH solution) into the feed liquid obtained in the step (1), adjusting the pH value, controlling the pH value of the collected high-concentration ammonia nitrogen wastewater after mixing to be more than 12, and entering the next link after the pH value adjustment is finished;
(3) and (3) precise filtration: performing precision filtration on the treated feed liquid to remove suspended matters, controlling the aperture of a filter element to be less than 10um, finishing the precision filtration, and entering the next link;
(4) and (3) distilling to deeply remove ammonia nitrogen: the feed liquid treated in the step (3) enters a distillation tower, the low temperature of the distillation tower is controlled to be 103-105 ℃, the temperature of the tower top is controlled to be 90-96 ℃, circulating water is used for spraying from the tower top, and the flow is controlled to be 0.5-1.5m 3 H; controlling the ammonia nitrogen concentration of distilled water to be less than 25ppm and the PH to be 9-11, completing distillation, and entering the next link;
(5) secondary deep ammonia nitrogen removal: adding sodium hypochlorite into the feed liquid treated in the step (4), and deeply removing ammonia nitrogen for the second time, wherein the ammonia nitrogen concentration is less than 15ppm at the end point of the reaction, and the ammonia nitrogen is completely removed for the second time, and entering the next link;
(6) adjusting the pH value: adjusting the pH value of the feed liquid treated in the step (5) by hydrochloric acid, controlling the end-point pH value to be 4-5, adjusting the pH value, and entering the next link;
(7) d318 resin adsorption: adsorbing the valuable metal WO by D318 resin on the feed liquid treated in the step (6) 3 And Mo, the adsorption flow rate is 1-2BV/h, and WO is controlled in the adsorbed liquid 3 Less than 0.02g/L, circularly desorbing with liquid caustic soda after adsorption saturation, wherein the concentration of NaOH is 80-120g/L, regenerating with 5% hydrochloric acid after desorption, washing after regeneration, and then performing adsorption in the next period; the absorbed solution enters the next link;
(8) adjusting the pH value: and (5) adjusting the pH value of the feed liquid treated in the step (7) to 6-9 by using liquid caustic soda, and discharging the feed liquid after reaching the standard.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115679128A (en) * | 2022-11-08 | 2023-02-03 | 厦门钨业股份有限公司 | Method for efficiently recovering tungsten and ammonia from tungsten-containing phosphorus removal precipitation slag |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101172729A (en) * | 2007-10-26 | 2008-05-07 | 郭晋民 | Physciochemical treatment technique for remained aqueous ammonia of coke-oven plant |
| CN101696062A (en) * | 2009-10-24 | 2010-04-21 | 刘向文 | Treatment process for waster water from preparation of ammonium paratungstate |
| CN102688607A (en) * | 2012-05-24 | 2012-09-26 | 崇义章源钨业股份有限公司 | Ammonia tail gas recycling method and system |
| CN105461140A (en) * | 2016-01-11 | 2016-04-06 | 江西稀有稀土金属钨业集团有限公司 | Waste water comprehensive treatment and recycling system and method adopting tungsten smelting ion-exchange method |
| CN205347088U (en) * | 2016-01-11 | 2016-06-29 | 江西稀有稀土金属钨业集团有限公司 | Ion exchange method waste water integrated treatment recovery system is smelted to tungsten |
| CN106564987A (en) * | 2016-10-17 | 2017-04-19 | 中国有色集团（广西）平桂飞碟股份有限公司 | Ion exchange process for recovering tungsten from tungsten-containing diluted solution wastewater |
| CN107385241A (en) * | 2017-07-03 | 2017-11-24 | 信丰华锐钨钼新材料有限公司 | A kind of Efficient utilization method of scheelite soda boiling slag |
| CN108371869A (en) * | 2018-05-10 | 2018-08-07 | 江西铜鼓有色冶金化工有限责任公司 | Recovery ammonia utilizes method and system in a kind of APT production processes |
| CN207903939U (en) * | 2018-01-29 | 2018-09-25 | 四川思达能环保科技有限公司 | A kind of negative pressure ammonia still process carries out ammonia recovery unit to rare earth ammonia nitrogen waste water |
| CN213416358U (en) * | 2020-09-22 | 2021-06-11 | 广东沃泰环保有限公司 | High temperature deamination nitrogen device based on MVR vaporization system |
-
2022
- 2022-04-25 CN CN202210439687.3A patent/CN115072917A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101172729A (en) * | 2007-10-26 | 2008-05-07 | 郭晋民 | Physciochemical treatment technique for remained aqueous ammonia of coke-oven plant |
| CN101696062A (en) * | 2009-10-24 | 2010-04-21 | 刘向文 | Treatment process for waster water from preparation of ammonium paratungstate |
| CN102688607A (en) * | 2012-05-24 | 2012-09-26 | 崇义章源钨业股份有限公司 | Ammonia tail gas recycling method and system |
| CN105461140A (en) * | 2016-01-11 | 2016-04-06 | 江西稀有稀土金属钨业集团有限公司 | Waste water comprehensive treatment and recycling system and method adopting tungsten smelting ion-exchange method |
| CN205347088U (en) * | 2016-01-11 | 2016-06-29 | 江西稀有稀土金属钨业集团有限公司 | Ion exchange method waste water integrated treatment recovery system is smelted to tungsten |
| CN106564987A (en) * | 2016-10-17 | 2017-04-19 | 中国有色集团（广西）平桂飞碟股份有限公司 | Ion exchange process for recovering tungsten from tungsten-containing diluted solution wastewater |
| CN107385241A (en) * | 2017-07-03 | 2017-11-24 | 信丰华锐钨钼新材料有限公司 | A kind of Efficient utilization method of scheelite soda boiling slag |
| CN207903939U (en) * | 2018-01-29 | 2018-09-25 | 四川思达能环保科技有限公司 | A kind of negative pressure ammonia still process carries out ammonia recovery unit to rare earth ammonia nitrogen waste water |
| CN108371869A (en) * | 2018-05-10 | 2018-08-07 | 江西铜鼓有色冶金化工有限责任公司 | Recovery ammonia utilizes method and system in a kind of APT production processes |
| CN213416358U (en) * | 2020-09-22 | 2021-06-11 | 广东沃泰环保有限公司 | High temperature deamination nitrogen device based on MVR vaporization system |
Non-Patent Citations (2)
| Title |
|---|
| 常冲;: "次氯酸钠去除蒸氨废液中氨氮试验条件探讨", 化工管理, no. 17 * |
| 陈晓东等: "兰炭废水汽提蒸氨工艺的氨氮深度处理", 化学工程, vol. 49, no. 09, pages 64 - 68 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115679128A (en) * | 2022-11-08 | 2023-02-03 | 厦门钨业股份有限公司 | Method for efficiently recovering tungsten and ammonia from tungsten-containing phosphorus removal precipitation slag |
| CN115679128B (en) * | 2022-11-08 | 2024-04-16 | 厦门钨业股份有限公司 | Method for efficiently recovering tungsten and ammonia from tungsten-containing dephosphorization precipitated slag |
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