CN111589572A - Process for recovering iron ore concentrate and ore sand from alumina red mud - Google Patents
Process for recovering iron ore concentrate and ore sand from alumina red mud Download PDFInfo
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- CN111589572A CN111589572A CN202010436072.6A CN202010436072A CN111589572A CN 111589572 A CN111589572 A CN 111589572A CN 202010436072 A CN202010436072 A CN 202010436072A CN 111589572 A CN111589572 A CN 111589572A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/30—Combinations with other devices, not otherwise provided for
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Abstract
The invention discloses a process for recovering iron ore concentrate and ore sand from alumina red mud, which comprises the following steps: reselecting the red mud slurry after adding water and premixing; grading the gravity concentrate, then carrying out primary strong magnetic separation, then carrying out primary grinding, and finally carrying out secondary strong magnetic separation; performing reverse flotation on the material in the magnetic separation concentrate tank, performing two-stage ore grinding, performing low-intensity magnetic separation on the material after ore grinding, and performing filter pressing on concentrate after low-intensity magnetic separation to obtain iron concentrate and filtrate; grading the materials in the sand extracting groove to obtain ore sand products; and conveying the materials in the external discharge groove to a red mud tailing pond for stockpiling. Has the advantages that: the invention can extract iron ore concentrate and ore sand which can be utilized in the red mud by combining the processes of cyclone reselection, strong magnetic separation, reverse flotation, weak magnetic separation, cyclone classification and vibrating screen classification, changes waste into valuable and prolongs the stockpiling time of the red mud tailing pond.
Description
Technical Field
The invention relates to the technical field of metallurgical mineral separation, in particular to a process for recovering iron ore concentrate and ore sand from alumina red mud.
Background
The settling, separating and washing of the red mud is one of the important processes in the production process of alumina by the Bayer process, and the red mud produced by the final washing in the process is industrial waste with high alkalinity and large specific surface area generated in the production process of the alumina and needs to be discharged to a red mud yard for storage. Because the red mud contains a large amount of alkaline chemical substances, the high pH value determines that the red mud has corrosivity on biological, metal and siliceous materials. Due to the reduction of bauxite grade, the red mud output rate is increased year by year, and the red mud disposal site bears more and more pressure. With the development of the aluminum industry, the accumulated stock of red mud in China reaches more than 3 hundred million tons, and the comprehensive utilization of the red mud becomes a difficult problem to be solved by the alumina industry urgently. The recovery of iron ore concentrate and ore sand from the alumina red mud has very important significance for improving the overall economic benefit of the alumina industry in China and reducing the discharge of the red mud.
However, the iron ore concentrate recovered from the alumina red mud by the process in the prior art is generally low in grade and cannot reach the grade capable of being directly smelted, the contents of Al2O3 and SiO2 in the iron ore concentrate are serious in exceeding standard, and the quality of the iron ore concentrate is poor.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
Aiming at the problems in the related art, the invention provides a process for recovering iron ore concentrate and ore sand from alumina red mud, which changes the red mud into valuable, improves the resource utilization rate and reduces the discharge capacity of the red mud so as to overcome the technical problems in the prior related art.
Therefore, the invention adopts the following specific technical scheme:
a process for recovering iron ore concentrate and ore sand from alumina red mud comprises the following steps:
s1: discharging the red mud slurry of the bottom flow of the last washing and settling tank into a feeding tank, adding water for premixing, feeding the red mud slurry premixed in the feeding tank into a first cyclone for gravity treatment to obtain gravity concentrate and gravity tailings, and discharging the gravity tailings into an external discharge tank;
s2: adding the gravity concentrate into a cylindrical sieve for classification treatment, then adding the gravity concentrate on the cylindrical sieve into a sand extraction groove, feeding the gravity concentrate under the cylindrical sieve into a first strong magnetic separator for primary strong magnetic separation, then adding tailings subjected to the primary strong magnetic separation into the sand extraction groove, feeding the concentrate subjected to the primary strong magnetic separation into a first ball mill for primary grinding treatment, finally feeding a material subjected to grinding into a second strong magnetic separator for secondary strong magnetic separation, adding the tailings subjected to the secondary strong magnetic separation into the sand extraction groove, and adding the concentrate subjected to the secondary strong magnetic separation into a magnetic separation concentrate groove;
s3: feeding the materials in the magnetic separation concentrate tank into a flotation machine for reverse flotation treatment, discharging tailings subjected to reverse flotation into the outer discharge tank, feeding reverse flotation concentrate into a second ball mill for secondary grinding treatment, feeding the materials subjected to grinding treatment into a weak magnetic separator for weak magnetic separation, discharging tailings subjected to weak magnetic separation into the outer discharge tank, feeding the concentrate subjected to weak magnetic separation into a filter press for filter pressing treatment, and obtaining iron concentrate and filtrate;
wherein, the grade of the iron ore concentrate after filter pressing in the step S3 is more than or equal to 65 percent, the content of Al2O3 in the iron ore concentrate is less than 1.0 percent, the content of SiO2 in the iron ore concentrate is less than 6.0 percent, and the water content of the iron ore concentrate is less than 25 percent.
S4: feeding the materials in the sand extracting groove into a second cyclone for classification treatment, discharging overflow materials of the second cyclone into the outer discharge groove, adding underflow materials of the second cyclone into a vibrating screen for classification treatment, and then discharging materials screened by the vibrating screen into the outer discharge groove, wherein the materials screened by the vibrating screen are ore sand products;
s5: and conveying the materials in the outer discharge groove to a red mud tailing pond for stockpiling.
Preferably, the concentration of the red mud slurry premixed in the step S1 is 25% to 45%.
Preferably, the diameter of the holes of the cylindrical screen in step S2 is 0.3-1.0 mm.
Preferably, the magnetic field strength of the primary strong magnetic separation in step S2 is 1.0 to 1.2T.
Preferably, the fineness of the primary grinding ore in the step S2 is 80-85% of-200 meshes.
Preferably, the magnetic field strength of the secondary strong magnetic separation in step S2 is 0.8 to 0.9T.
Preferably, the flotation time of the reverse flotation in the step S3 is 30-60 min.
Preferably, the fineness of the secondary grinding ore in the step S3 is 93-97% of-400 meshes.
The invention has the beneficial effects that:
1) through the combined process of cyclone reselection, strong magnetic separation, reverse flotation, weak magnetic separation, cyclone classification and vibrating screen classification, available iron ore concentrate and ore sand in the red mud can be extracted, on one hand, the stock of a red mud tailing pond can be reduced, the environmental pollution discharge cost caused by discharging the red mud is reduced, on the other hand, the produced iron ore concentrate can be sold to an iron and steel plant as an iron making raw material, and the produced ore sand can be sold as a building material to obtain additional economic benefit.
2) According to the invention, through the combined process of cyclone gravity separation, strong magnetic separation, reverse flotation, weak magnetic separation, cyclone classification and vibrating screen classification, the high-quality iron ore concentrate can be obtained, the grade of the iron ore concentrate is more than or equal to 65%, the content of Al2O3 is less than 1.0%, the content of SiO2 is less than 6.0%, and the requirement of a second-grade product of the magnet ore concentrate can be met.
3) The method has the advantages that the iron ore concentrate and the ore sand in the red mud are simultaneously recovered, so that the discharge amount of the red mud is effectively reduced, the stockpiling time of a red mud tailing pond is prolonged, the construction and operation cost of the red mud dam is saved, the utilization rate of the alumina red mud is effectively improved, the environmental pollution is reduced, the waste red mud resource can be reasonably utilized, and the method has very important significance.
4) The concentration of the premixed red mud slurry is controlled to be 25% -45%, so that the gravity separation treatment of the first cyclone on the red mud slurry is facilitated, in addition, the fineness of the primary grinding ore is controlled to be 80% -85% of-200 meshes, the fineness of the secondary grinding ore is controlled to be 93% -97% of-400 meshes, and the grade and the recovery rate of concentrate subjected to secondary strong magnetic separation and weak magnetic separation are improved.
5) The invention adopts a mode of combining a three-stage magnetic separation process of primary strong magnetic concentration, secondary strong magnetic scavenging and weak magnetic separation with a two-stage ore grinding process of primary coarse grinding and secondary fine grinding to separate the iron ore concentrate in the red mud, thereby effectively improving the grade and the recovery rate of the iron ore concentrate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a flow chart of a process for recovering iron ore concentrate and ore from alumina red mud according to an embodiment of the present invention.
Detailed Description
For further explanation of the various embodiments, the drawings are provided as part of the present disclosure and serve primarily to illustrate the embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and with the advantages offered thereby.
The present invention will now be further described with reference to the accompanying drawings and specific embodiments, and as shown in fig. 1, a process for recovering iron ore concentrate and ore sand from alumina red mud is provided. The percentages referred to in the following examples are percentages by mass.
Example one
A process for recovering iron ore concentrate and ore sand from alumina red mud comprises the following steps:
s1: discharging the red mud slurry at the bottom flow of the last washing and settling tank into a feeding tank, adding water for premixing, adjusting the concentration of the premixed red mud slurry to 25%, then feeding the premixed red mud slurry in the feeding tank into a first cyclone for gravity treatment to obtain gravity concentrate and gravity tailings, and discharging the gravity tailings into an outer discharge tank;
s2: adding the gravity concentrate into a cylindrical sieve with 1mm sieve pores for classification treatment, then adding the gravity concentrate on the cylindrical sieve into a sand extraction groove, feeding the gravity concentrate under the cylindrical sieve into a first strong magnetic separator for primary strong magnetic separation, wherein the magnetic field strength of the primary strong magnetic separation is 1.2T, then adding tailings subjected to the primary strong magnetic separation into the sand extraction groove, feeding the concentrate subjected to the primary strong magnetic separation into a first ball mill for primary grinding treatment, the fineness of the primary ground ore is-200 meshes and accounts for 80%, finally adding the material subjected to the grinding into a second strong magnetic separator for secondary strong magnetic separation, wherein the magnetic field strength of the secondary strong magnetic separation is 0.9T, adding the tailings subjected to the secondary strong magnetic separation into the sand extraction groove, and adding the concentrate subjected to the secondary strong magnetic separation into a magnetic separation fine ore groove;
s3: feeding the materials in the magnetic separation concentrate tank into a flotation machine for reverse flotation, wherein the flotation time of the reverse flotation is 30min, discharging tailings after the reverse flotation into the external discharge tank, feeding reverse flotation concentrate into a second ball mill for secondary grinding, the fineness of secondary grinding is 93 percent, feeding the materials after the grinding into a weak magnetic separator for weak magnetic separation, discharging tailings after the weak magnetic separation into the external discharge tank, feeding concentrate after the weak magnetic separation into a filter press for filter pressing, and obtaining iron concentrate and filtrate, wherein the grade of the iron concentrate is 65.2 percent, the water content of the iron concentrate is 21.4 percent, the Al2O3 content in the iron concentrate is 0.94 percent, and the SiO2 content is 5.6 percent;
s4: feeding the materials in the sand extracting groove into a second cyclone for classification treatment, discharging overflow materials of the second cyclone into the outer discharge groove, adding underflow materials of the second cyclone into a vibrating screen for classification treatment, and then discharging materials screened by the vibrating screen into the outer discharge groove, wherein the materials screened by the vibrating screen are ore sand products;
s5: and conveying the materials in the outer discharge groove to a red mud tailing pond for stockpiling.
Example two
A process for recovering iron ore concentrate and ore sand from alumina red mud comprises the following steps:
s1: discharging the red mud slurry of the bottom flow of the last washing and settling tank into a feeding tank, adding water for premixing, adjusting the concentration of the premixed red mud slurry to 35%, then feeding the premixed red mud slurry in the feeding tank into a first cyclone for gravity treatment to obtain gravity concentrate and gravity tailings, and discharging the gravity tailings into an outer discharge tank;
s2: adding the gravity concentrate into a cylindrical sieve with a sieve pore of 0.5mm for classification treatment, then adding the gravity concentrate on the cylindrical sieve into a sand extraction groove, feeding the gravity concentrate under the cylindrical sieve into a first strong magnetic separator for primary strong magnetic separation, wherein the magnetic field intensity of the primary strong magnetic separation is 1.1T, then adding tailings subjected to the primary strong magnetic separation into the sand extraction groove, feeding the concentrate subjected to the primary strong magnetic separation into a first ball mill for primary grinding treatment, wherein the fineness of the primary grinding is-200 meshes accounting for 82%, finally feeding the material subjected to the grinding into a second strong magnetic separator for secondary strong magnetic separation, wherein the magnetic field intensity of the secondary strong magnetic separation is 0.85T, adding the tailings subjected to the secondary strong magnetic separation into the sand extraction groove, and adding the concentrate subjected to the secondary strong magnetic separation into the magnetic separation fine ore groove;
s3: feeding the materials in the magnetic separation concentrate tank into a flotation machine for reverse flotation, wherein the flotation time of the reverse flotation is 40min, discharging tailings after the reverse flotation into the external discharge tank, feeding reverse flotation concentrate into a second ball mill for secondary grinding treatment, the fineness of secondary grinding is-400 meshes and accounts for 95%, feeding the materials after grinding into a weak magnetic separator for weak magnetic separation, discharging tailings after the weak magnetic separation into the external discharge tank, feeding concentrate after the weak magnetic separation into a filter press for filter pressing treatment, and obtaining iron concentrate and filtrate, wherein the grade of the iron concentrate is 65.6%, the water content of the iron concentrate is 22.3%, the content of Al2O3 in the iron concentrate is 0.87%, and the content of SiO2 is 5.1%;
s4: feeding the materials in the sand extracting groove into a second cyclone for classification treatment, discharging overflow materials of the second cyclone into the outer discharge groove, adding underflow materials of the second cyclone into a vibrating screen for classification treatment, and then discharging materials screened by the vibrating screen into the outer discharge groove, wherein the materials screened by the vibrating screen are ore sand products;
s5: and conveying the materials in the outer discharge groove to a red mud tailing pond for stockpiling.
In conclusion, by means of the technical scheme, iron ore concentrate and ore sand which can be utilized in the red mud can be extracted through the process of combining the cyclone reselection, the strong magnetic separation, the reverse flotation, the weak magnetic separation, the cyclone classification and the vibration screen classification, so that on one hand, the inventory of a red mud tailing pond can be reduced, the environmental pollution discharge cost caused by discharging the red mud is reduced, on the other hand, the produced iron ore concentrate can be sold to an iron and steel plant as an iron making raw material, and the produced ore sand can be sold as a building material, so that extra economic benefit is obtained.
Meanwhile, the invention can obtain high-quality iron ore concentrate by combining the processes of cyclone gravity separation, strong magnetic separation, reverse flotation, weak magnetic separation, cyclone classification and vibrating screen classification, wherein the grade of the iron ore concentrate is more than or equal to 65 percent, the content of Al2O3 is less than 1.0 percent, and the content of SiO2 is less than 6.0 percent, thus meeting the requirements of secondary products of the magnet ore concentrate.
Meanwhile, the method simultaneously recovers the iron ore concentrate and the ore sand in the red mud, not only effectively reduces the discharge amount of the red mud, prolongs the stockpiling time of the red mud tailing pond, saves the construction and operation cost of the red mud dam, but also effectively improves the utilization rate of the alumina red mud, reduces the environmental pollution, can reasonably utilize the waste red mud resources, and has very important significance.
Meanwhile, the concentration of the premixed red mud slurry is controlled to be 25% -45%, the gravity separation treatment of the first cyclone on the red mud slurry is facilitated, in addition, the fineness of the first-stage grinding ore is controlled to be 80% -85% of-200 meshes, the fineness of the second-stage grinding ore is controlled to be 93% -97% of-400 meshes, and the improvement of the grade and the recovery rate of concentrate subjected to secondary strong magnetic separation and weak magnetic separation is facilitated.
Meanwhile, the invention adopts a mode of combining a three-stage magnetic separation process of primary strong magnetic concentration, secondary strong magnetic scavenging and weak magnetic separation with a two-stage ore grinding process of primary coarse grinding and secondary fine grinding to separate the iron ore concentrate in the red mud, thereby effectively improving the grade and the recovery rate of the iron ore concentrate.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A process for recovering iron ore concentrate and ore sand from alumina red mud is characterized by comprising the following steps:
s1: discharging the red mud slurry of the bottom flow of the last washing and settling tank into a feeding tank, adding water for premixing, feeding the red mud slurry premixed in the feeding tank into a first cyclone for gravity treatment to obtain gravity concentrate and gravity tailings, and discharging the gravity tailings into an external discharge tank;
s2: adding the gravity concentrate into a cylindrical sieve for classification treatment, then adding the gravity concentrate on the cylindrical sieve into a sand extraction groove, feeding the gravity concentrate under the cylindrical sieve into a first strong magnetic separator for primary strong magnetic separation, then adding tailings subjected to the primary strong magnetic separation into the sand extraction groove, feeding the concentrate subjected to the primary strong magnetic separation into a first ball mill for primary grinding treatment, finally feeding a material subjected to grinding into a second strong magnetic separator for secondary strong magnetic separation, adding the tailings subjected to the secondary strong magnetic separation into the sand extraction groove, and adding the concentrate subjected to the secondary strong magnetic separation into a magnetic separation concentrate groove;
s3: feeding the materials in the magnetic separation concentrate tank into a flotation machine for reverse flotation treatment, discharging tailings subjected to reverse flotation into the outer discharge tank, feeding reverse flotation concentrate into a second ball mill for secondary grinding treatment, feeding the materials subjected to grinding treatment into a weak magnetic separator for weak magnetic separation, discharging tailings subjected to weak magnetic separation into the outer discharge tank, feeding the concentrate subjected to weak magnetic separation into a filter press for filter pressing treatment, and obtaining iron concentrate and filtrate;
s4: feeding the materials in the sand extracting groove into a second cyclone for classification treatment, discharging overflow materials of the second cyclone into the outer discharge groove, adding underflow materials of the second cyclone into a vibrating screen for classification treatment, and then discharging materials screened by the vibrating screen into the outer discharge groove, wherein the materials screened by the vibrating screen are ore sand products;
s5: and conveying the materials in the outer discharge groove to a red mud tailing pond for stockpiling.
2. The process of claim 1, wherein the concentration of the red mud slurry premixed in the step S1 is 25% -45%.
3. The process of claim 1, wherein the diameter of the holes of the cylindrical screen in step S2 is 0.3-1.0 mm.
4. The process of claim 1, wherein the magnetic field strength of the primary strong magnetic separation in step S2 is 1.0-1.2T.
5. The process for recovering iron ore concentrate and ore sand from alumina red mud according to claim 1, wherein the fineness of the primary grinding ore in step S2 is 80-85% of-200 meshes.
6. The process of claim 1, wherein the magnetic field strength of the secondary strong magnetic separation in step S2 is 0.8-0.9T.
7. The process of claim 1, wherein the reverse flotation time in step S3 is 30-60 min.
8. The process for recovering iron ore concentrate and ore sand from alumina red mud according to claim 1, wherein the fineness of the secondary grinding ore in the step S3 is 93-97% of-400 meshes.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1569341A (en) * | 2004-05-14 | 2005-01-26 | 山东铝业股份有限公司 | Method for selecting iron ore from red mud |
| CN1743077A (en) * | 2005-09-22 | 2006-03-08 | 贵阳铝镁设计研究院 | Coarse-fine red mud grading method |
| CN101204681A (en) * | 2007-09-03 | 2008-06-25 | 李艳军 | Method of refining iron ore from alkaline red mud and making gangue neutral |
| CN101912814A (en) * | 2010-08-09 | 2010-12-15 | 中国铝业股份有限公司 | Method for magnetic separation of iron ore concentrate in red mud slurry in alumina production flow by Bayer process |
| CN204866160U (en) * | 2015-08-06 | 2015-12-16 | 山东宏桥新型材料有限公司 | Aluminium oxide is abandoned red mud and is selected iron to select sand system |
| CN105413875A (en) * | 2015-12-16 | 2016-03-23 | 陈均宁 | Flotation method for improving grade of flocculent iron ore concentrate |
| CN108636591A (en) * | 2018-04-16 | 2018-10-12 | 辽宁万隆科技研发有限公司长沙分公司 | A method of recycling quartz from iron tailings |
-
2020
- 2020-05-21 CN CN202010436072.6A patent/CN111589572A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1569341A (en) * | 2004-05-14 | 2005-01-26 | 山东铝业股份有限公司 | Method for selecting iron ore from red mud |
| CN1743077A (en) * | 2005-09-22 | 2006-03-08 | 贵阳铝镁设计研究院 | Coarse-fine red mud grading method |
| CN101204681A (en) * | 2007-09-03 | 2008-06-25 | 李艳军 | Method of refining iron ore from alkaline red mud and making gangue neutral |
| CN101912814A (en) * | 2010-08-09 | 2010-12-15 | 中国铝业股份有限公司 | Method for magnetic separation of iron ore concentrate in red mud slurry in alumina production flow by Bayer process |
| CN204866160U (en) * | 2015-08-06 | 2015-12-16 | 山东宏桥新型材料有限公司 | Aluminium oxide is abandoned red mud and is selected iron to select sand system |
| CN105413875A (en) * | 2015-12-16 | 2016-03-23 | 陈均宁 | Flotation method for improving grade of flocculent iron ore concentrate |
| CN108636591A (en) * | 2018-04-16 | 2018-10-12 | 辽宁万隆科技研发有限公司长沙分公司 | A method of recycling quartz from iron tailings |
Non-Patent Citations (1)
| Title |
|---|
| 韩跃新等: "我国铁矿选矿技术最新进展", 《金属矿山》 * |
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Inventor after: Lu Yang Inventor after: Zhang Wanfeng Inventor after: Hou Yangling Inventor after: Wang Yujuan Inventor after: Wang Deqiang Inventor after: Wu Liangguang Inventor after: Luan Yanna Inventor after: Yue Shirui Inventor after: Wang Dezhi Inventor before: Lu Yang Inventor before: Hou Yangling Inventor before: Wang Yujuan Inventor before: Wang Deqiang Inventor before: Wu Liangguang Inventor before: Luan Yanna Inventor before: Yue Shirui Inventor before: Wang Dezhi |