CN109133549A - The processing method of acid washing phosphorization sludge - Google Patents
The processing method of acid washing phosphorization sludge Download PDFInfo
- Publication number
- CN109133549A CN109133549A CN201811026348.2A CN201811026348A CN109133549A CN 109133549 A CN109133549 A CN 109133549A CN 201811026348 A CN201811026348 A CN 201811026348A CN 109133549 A CN109133549 A CN 109133549A
- Authority
- CN
- China
- Prior art keywords
- sludge
- acid washing
- washing phosphorization
- processing method
- acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
-
- 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
- C02F2101/20—Heavy metals or heavy metal compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Geology (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention relates to a kind of processing methods of acid washing phosphorization sludge, comprising the following steps: water is added in acid washing phosphorization sludge, ore pulp is made after dispersing sludge by mechanical stirring；Ore pulp is passed through into waterpower or mechanical classification, isolated particulate matter and mud；Floating agent is added in mud, later FLOTATION SEPARATION, obtains metal hydroxides and nonmetallic mineral；It is concentrated, washed and dehydration respectively later, obtain iron ore concentrate and gypsum after drying.The processing method provided by the present invention, the valuable constituent in acid washing phosphorization sludge is separated using floatation process, not only realize the recycling of waste, have many advantages, such as that process flow is short, without secondary pollution, by-product value is high, and effectively prevents the use for the chemicals that the environmental hazards such as soda acid are big in conventional method.In addition, the characteristics of the method for the present invention is according to acid washing phosphorization sludge, realizes resource utilization, so that Processes and apparatus is easy to operate, treatment effect is excellent, there is extensive application value.
Description
Technical field
The present invention relates to environmental protections and resource regeneration technical field, and in particular to a kind of processing side of acid washing phosphorization sludge
Method.
Background technique
In recent years, along with the high speed development of the industries such as metal product, metal surface acid washing phosphorization treatment process is obtained extensively
General application.Specifically, acid washing phosphorization processing and is formed in metal surface a kind of insoluble using acid removal oxidation on metal surface object
The process of property film, is the technology that Treatment of Metal Surface generallys use.General parkerizing process includes acid pickling and rust removing, phosphatization and blunt
Change processing, generates a large amount of pollutant in the process, especially larger with the discharge amount of acid washing phosphorization sludge, at subsequent solid waste
Reason brings comparable difficulty.
Acid washing phosphorization wastewater treatment method mainly has the group of bioanalysis, chemical method, physical-chemical process and the above method at present
It closes and uses；And above-mentioned all methods are all the solid components that the acid ion in waste water is converted to slightly solubility.Chemical method and life
Object method is current using more extensive method, wherein chemical method is again with its treatment effeciency height, effect stability, simple and easy etc.
Advantage becomes most effective, the most common method of processing acid washing phosphorization waste water, and most common precipitating reagent is lime in the method.
However, lime precipitation also has the defect of its own.The method can generate a large amount of sludge, contain in such sludge big
The calcium sulfate of amount has great recycling potentiality, but the heavy metal substance wherein contained limits returning for acid washing phosphorization sludge
It receives and utilizes.It would therefore be highly desirable to develop a kind of rationally efficient acid washing phosphorization sludge process for separation and purification.
Summary of the invention
For the defects in the prior art, the present invention is intended to provide a kind of processing method of acid washing phosphorization sludge.The present invention
Valuable constituent in acid washing phosphorization sludge is separated using floatation process, not only realizes waste by the processing method of offer
Recycling has many advantages, such as that process flow is short, without secondary pollution, by-product value is high, and effectively prevents in conventional method
The use of the big chemicals of the environmental hazards such as soda acid.In addition, the characteristics of processing method of the present invention is according to acid washing phosphorization sludge, real
Existing resource utilization has extensive application value so that Processes and apparatus is easy to operate, treatment effect is preferable.
For this purpose, the invention provides the following technical scheme:
The present invention provides a kind of processing method of acid washing phosphorization sludge, comprising the following steps: S1: in acid washing phosphorization sludge
Water is added, ore pulp is made after dispersing sludge by mechanical stirring；S2: the ore pulp that S1 is generated passes through waterpower or mechanical classification,
Isolated particulate matter and mud；S3: floating agent is added in the mud that S2 is obtained, is separated in flotation unit later, obtains
To metal hydroxides and nonmetallic mineral；S4: the obtained metal hydroxides of S3 and nonmetallic mineral are concentrated, washed
And dehydration；S5: S4 treated metal hydroxides is dried, iron ore concentrate is prepared；By S4, that treated is nonmetallic
Mineral drying, is prepared gypsum.
Preferably, in S1: the concentration of ore pulp is 10%~45%.
Preferably, in S2: the granularity requirements of mud are as follows: -03074mm accounts for 60~90%.
Preferably, in S2: being sent into cement plant after particulate matter is washed, be used to prepare cement building material；Wherein, it is wrapped in particulate matter
Containing silica.
Preferably, in S3: floating agent includes inhibitor and/or collecting agent；Wherein, collecting agent selected fatty acid class, hydrocarbon
One of base sulfonate, sulfovinate, hydroxy acid and amine are a variety of；Inhibitor selects inorganic inhibitor and/or organic suppression
Preparation, and inorganic inhibitor includes sodium metasilicate, organic inhibitor includes one of starch, humic acid and amino acid or a variety of.
Preferably, in S3: nonmetallic mineral includes calcium sulfate.
Preferably, in S4: the obtained metal hydroxides of S3 and nonmetallic mineral are concentrated respectively, are washed and are dehydrated
Processing, and in the recovered rear pulping process for S1 of water isolated after dehydration.
Preferably, in S5: the temperature of drying is below 800 DEG C.
Above-mentioned technical proposal provided by the invention has the advantage that
(1) applicant has found by numerous studies: the processing method provided by the present invention, using floatation process by acid washing phosphorization
Valuable constituent separation in sludge, not only realizes the recycling of waste, short, the without secondary pollution, by-product with process flow
The advantages that price value is high, and effectively prevent the use for the chemicals that the environmental hazards such as soda acid are big in conventional method.
(2) the characteristics of processing method of the present invention is according to acid washing phosphorization sludge realizes resource utilization, so that Processes and apparatus
It is easy to operate, treatment effect is preferable, have extensive application value.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Fig. 1 is the flow diagram of acid washing phosphorization method for sludge treatment of the present invention.
Specific embodiment
It is described in detail below in conjunction with embodiment of the attached drawing to technical solution of the present invention.Following embodiment is only used for
More clearly illustrate technical solution of the present invention, therefore be only used as example, and cannot be used as a limitation and limit protection model of the invention
It encloses.
Experimental method in following embodiments is unless otherwise specified conventional method.Examination as used in the following examples
Material is tested, is to be commercially available from conventional reagent shop unless otherwise specified.Quantitative test in following embodiment, is all provided with
Three repeated experiments are set, data are the average value or mean+SD of three repeated experiments.
The present invention provides a kind of processing method of acid washing phosphorization sludge, as shown in Figure 1, comprising the following steps:
S1: being added water in acid washing phosphorization sludge, is dispersed sludge by mechanical stirring, and it is 10%~45% that concentration, which is made,
Ore pulp.
S2: the ore pulp that S1 is generated accounts for 60 by waterpower or mechanical classification, isolated particulate matter and -03074mm granularity
~90% mud is sent into cement plant after later washing particulate matter, is used to prepare cement building material.Wherein, include in particulate matter
Silica.
S3: floating agent is added in the mud that S2 is obtained, is separated in flotation unit later, obtains metal hydroxides
With the nonmetallic mineral including calcium sulfate.Floating agent includes inhibitor and/or collecting agent；Wherein, collecting agent selected fatty acid
One of class, hydrocarbyl sulfonate, sulfovinate, hydroxy acid and amine are a variety of；Inhibitor is selected inorganic inhibitor and/or is had
Machine inhibitor, and inorganic inhibitor includes sodium metasilicate, organic inhibitor includes one of starch, humic acid and amino acid or more
Kind.
S4: the obtained metal hydroxides of S3 and nonmetallic mineral are concentrated respectively, washed and dehydration；And it is de-
Isolated water can be further recovered afterwards in the pulping process of S1 after water.
S5: by S4, treated that metal hydroxides is dried at 800 DEG C, and iron ore concentrate is prepared；By S4, treated
Nonmetallic mineral is dried at 800 DEG C, and gypsum is prepared.
It is illustrated With reference to embodiment:
Embodiment one
The present embodiment provides a kind of processing methods of acid washing phosphorization sludge, comprising the following steps:
S1: being added water in acid washing phosphorization sludge, is dispersed sludge by mechanical stirring, and the mine that concentration is 45% is made
Slurry.
S2: the ore pulp that S1 is generated accounts for 60% mud by waterpower or mechanical classification, isolated -03074mm granularity
With the particulate matter including silica, it is sent into cement plant after later washing particulate matter, is used to prepare cement building material.
S3: floating agent is added in the mud that S2 is obtained, is separated in flotation unit later, obtains metal hydroxides
With the nonmetallic mineral including calcium sulfate.Wherein, floating agent includes inhibitor and collecting agent, and collecting agent selected fatty acid
Class, inhibitor select sodium metasilicate.
S4: the obtained metal hydroxides of S3 and nonmetallic mineral are concentrated respectively, washed and dehydration；And it is de-
Isolated water can be further recovered afterwards in the pulping process of S1 after water.
S5: S4 treated metal hydroxides is dried in 800 DEG C, iron ore concentrate is prepared；By S4, that treated is non-
Metalliferous mineral is dried in 800 DEG C, and gypsum is prepared.
Embodiment two
The present embodiment provides a kind of processing methods of acid washing phosphorization sludge, comprising the following steps:
S1: being added water in acid washing phosphorization sludge, is dispersed sludge by mechanical stirring, and the mine that concentration is 10% is made
Slurry.
S2: the ore pulp that S1 is generated accounts for 90% mud by waterpower or mechanical classification, isolated -03074mm granularity
With the particulate matter including silica, it is sent into cement plant after later washing particulate matter, is used to prepare cement building material.
S3: floating agent is added in the mud that S2 is obtained, is separated in flotation unit later, obtains metal hydroxides
With the nonmetallic mineral including calcium sulfate.Wherein, floating agent includes inhibitor and collecting agent, and collecting agent selects hydrocarbyl sulfonic
Salt, inhibitor select starch and humic acid.
S4: the obtained metal hydroxides of S3 and nonmetallic mineral are concentrated respectively, washed and dehydration；And it is de-
Isolated water can be further recovered afterwards in the pulping process of S1 after water.
S5: S4 treated metal hydroxides is dried in 750 DEG C, iron ore concentrate is prepared；By S4, that treated is non-
Metalliferous mineral is dried in 750 DEG C, and gypsum is prepared.
Embodiment three
The present embodiment provides a kind of processing methods of acid washing phosphorization sludge, comprising the following steps:
S1: being added water in acid washing phosphorization sludge, is dispersed sludge by mechanical stirring, and the mine that concentration is 30% is made
Slurry.
S2: the ore pulp that S1 is generated accounts for 80% mud by waterpower or mechanical classification, isolated -03074mm granularity
With the particulate matter including silica, it is sent into cement plant after later washing particulate matter, is used to prepare cement building material.
S3: floating agent is added in the mud that S2 is obtained, is separated in flotation unit later, obtains metal hydroxides
With the nonmetallic mineral including calcium sulfate.Wherein, floating agent includes inhibitor and collecting agent, and collecting agent selects sulfovinic acid
Salt, inhibitor select sodium metasilicate and humic acid.
S4: the obtained metal hydroxides of S3 and nonmetallic mineral are concentrated respectively, washed and dehydration；And it is de-
Isolated water can be further recovered afterwards in the pulping process of S1 after water.
S5: S4 treated metal hydroxides is dried in 750 DEG C, iron ore concentrate is prepared；By S4, that treated is non-
Metalliferous mineral is dried in 750 DEG C, and gypsum is prepared.
Example IV
The present embodiment provides a kind of processing methods of acid washing phosphorization sludge, comprising the following steps:
S1: being added water in acid washing phosphorization sludge, is dispersed sludge by mechanical stirring, and the mine that concentration is 20% is made
Slurry.
S2: the ore pulp that S1 is generated accounts for 70% mud by waterpower or mechanical classification, isolated -03074mm granularity
With the particulate matter including silica, it is sent into cement plant after later washing particulate matter, is used to prepare cement building material.
S3: floating agent is added in the mud that S2 is obtained, is separated in flotation unit later, obtains metal hydroxides
With the nonmetallic mineral including calcium sulfate.Wherein, floating agent includes inhibitor and collecting agent, and collecting agent selected fatty acid class
Collecting agent and sulfovinate, inhibitor select amino acid and humic acid.
S4: the obtained metal hydroxides of S3 and nonmetallic mineral are concentrated respectively, washed and dehydration；And it is de-
Isolated water can be further recovered afterwards in the pulping process of S1 after water.
S5: S4 treated metal hydroxides is dried in 700 DEG C, iron ore concentrate is prepared；By S4, that treated is non-
Metalliferous mineral is dried in 700 DEG C, and gypsum is prepared.
Certainly, the case where enumerating in addition to embodiment one to example IV, the parameter etc. in other treatment processes is also can be with
's.
The processing method provided by the present invention is separated the valuable constituent in acid washing phosphorization sludge using floatation process, not only
The recycling for realizing waste has many advantages, such as that process flow is short, without secondary pollution, by-product value is high, and effectively keeps away
The use for the chemicals that the environmental hazards such as soda acid are big in conventional method is exempted from.In addition, processing method of the present invention is according to pickling phosphorus
The characteristics of changing sludge realizes resource utilization, so that Processes and apparatus is easy to operate, treatment effect is preferable, has and widely pushes away
Wide application value.
In the description of the present invention, it is to be understood that, term " first ", " second " are used for description purposes only, and cannot
It is interpreted as indication or suggestion relative importance or implicitly indicates the quantity of indicated technical characteristic.Define as a result, " the
One ", the feature of " second " can explicitly or implicitly include one or more of the features.In the description of the present invention,
The meaning of " plurality " is two or more, unless otherwise specifically defined.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (8)
1. a kind of processing method of acid washing phosphorization sludge, which comprises the following steps:
S1: being added water in acid washing phosphorization sludge, and ore pulp is made after dispersing sludge by mechanical stirring；
S2: the ore pulp that the S1 is generated passes through waterpower or mechanical classification, isolated particulate matter and mud；
S3: floating agent is added in the mud that the S2 is obtained, is separated in flotation unit later, obtains metal hydroxides
And nonmetallic mineral；
S4: the obtained metal hydroxides of the S3 and nonmetallic mineral are concentrated, washed and dehydration；
S5: the S4 treated metal hydroxides is dried, iron ore concentrate is prepared；By the S4, that treated is nonmetallic
Mineral drying, is prepared gypsum.
2. the processing method of acid washing phosphorization sludge according to claim 1, it is characterised in that:
In the S1:
The concentration of the ore pulp is 10%~45%.
3. the processing method of acid washing phosphorization sludge according to claim 1, it is characterised in that:
In the S2:
The granularity requirements of the mud are as follows: -03074mm accounts for 60~90%.
4. the processing method of acid washing phosphorization sludge according to claim 1, it is characterised in that:
In the S2:
It will be sent into cement plant after particulate matter washing, is used to prepare cement building material；It wherein, include titanium dioxide in the particulate matter
Silicon.
5. the processing method of acid washing phosphorization sludge according to claim 1, it is characterised in that:
In the S3:
The floating agent includes inhibitor and/or collecting agent；Wherein, the collecting agent selected fatty acid class, hydrocarbyl sulfonate,
One of sulfovinate, hydroxy acid and amine are a variety of；The inhibitor selects inorganic inhibitor and/or organic inhibitor,
And the inorganic inhibitor includes sodium metasilicate, the organic inhibitor includes one of starch, humic acid and amino acid or more
Kind.
6. the processing method of acid washing phosphorization sludge according to claim 1, it is characterised in that:
In the S3:
The nonmetallic mineral includes calcium sulfate.
7. the processing method of acid washing phosphorization sludge according to claim 1, it is characterised in that:
In the S4:
The obtained metal hydroxides of the S3 and nonmetallic mineral are concentrated respectively, washed and dehydration, and is dehydrated
For in the pulping process of the S1 after isolated water is recovered afterwards.
8. the processing method of acid washing phosphorization sludge according to claim 1, it is characterised in that:
In the S5:
The temperature of the drying is below 800 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811026348.2A CN109133549A (en) | 2018-09-04 | 2018-09-04 | The processing method of acid washing phosphorization sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811026348.2A CN109133549A (en) | 2018-09-04 | 2018-09-04 | The processing method of acid washing phosphorization sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109133549A true CN109133549A (en) | 2019-01-04 |
Family
ID=64826737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811026348.2A Pending CN109133549A (en) | 2018-09-04 | 2018-09-04 | The processing method of acid washing phosphorization sludge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109133549A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113087322A (en) * | 2019-12-23 | 2021-07-09 | 江苏锦明再生资源有限公司 | Novel sludge resource gradient utilization method |
| CN113912238A (en) * | 2021-11-09 | 2022-01-11 | 魏桥国科(滨州)科学工程产业技术研究院有限公司 | Upgrading method for enriching organic matters in printing and dyeing sludge |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101643300A (en) * | 2009-09-01 | 2010-02-10 | 浙江大学 | Treatment method of comprehensive waste water of metal processing |
| CN103950987A (en) * | 2014-04-11 | 2014-07-30 | 南京理工大学 | Recycling method of pickling sludge |
| CN105603196A (en) * | 2016-03-14 | 2016-05-25 | 云南博曦环保设备有限公司 | Method for conducting resource treatment on non-ferrous metal hydrometallurgical waste water |
| CN105884156A (en) * | 2015-01-20 | 2016-08-24 | 徐超群 | Resource utilization method for metal surface treatment sludge |
| CN107512837A (en) * | 2017-09-11 | 2017-12-26 | 云南省环境科学研究院(中国昆明高原湖泊国际研究中心) | The processing method of the river bottom mud containing heavy metal |
| CN108178366A (en) * | 2017-12-06 | 2018-06-19 | 宜兴市馨德环保科技有限公司 | The method that the neutral salt Sewage treatment that a kind of pickling of metal generates utilizes |
| CN108218025A (en) * | 2017-12-06 | 2018-06-29 | 宜兴市馨德环保科技有限公司 | The method that the nitration mixture Sewage treatment that a kind of pickling of metal generates utilizes |
-
2018
- 2018-09-04 CN CN201811026348.2A patent/CN109133549A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101643300A (en) * | 2009-09-01 | 2010-02-10 | 浙江大学 | Treatment method of comprehensive waste water of metal processing |
| CN103950987A (en) * | 2014-04-11 | 2014-07-30 | 南京理工大学 | Recycling method of pickling sludge |
| CN105884156A (en) * | 2015-01-20 | 2016-08-24 | 徐超群 | Resource utilization method for metal surface treatment sludge |
| CN105603196A (en) * | 2016-03-14 | 2016-05-25 | 云南博曦环保设备有限公司 | Method for conducting resource treatment on non-ferrous metal hydrometallurgical waste water |
| CN107512837A (en) * | 2017-09-11 | 2017-12-26 | 云南省环境科学研究院(中国昆明高原湖泊国际研究中心) | The processing method of the river bottom mud containing heavy metal |
| CN108178366A (en) * | 2017-12-06 | 2018-06-19 | 宜兴市馨德环保科技有限公司 | The method that the neutral salt Sewage treatment that a kind of pickling of metal generates utilizes |
| CN108218025A (en) * | 2017-12-06 | 2018-06-29 | 宜兴市馨德环保科技有限公司 | The method that the nitration mixture Sewage treatment that a kind of pickling of metal generates utilizes |
Non-Patent Citations (2)
| Title |
|---|
| 李林波等: "《有色冶金环保与资源综合利用》", 30 November 2017, 北京：冶金工业出版社 * |
| 黄礼煌: "《金银提取技术 第3版》", 31 May 2012, 北京：冶金工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113087322A (en) * | 2019-12-23 | 2021-07-09 | 江苏锦明再生资源有限公司 | Novel sludge resource gradient utilization method |
| CN113912238A (en) * | 2021-11-09 | 2022-01-11 | 魏桥国科(滨州)科学工程产业技术研究院有限公司 | Upgrading method for enriching organic matters in printing and dyeing sludge |
| CN113912238B (en) * | 2021-11-09 | 2023-12-15 | 魏桥国科(滨州)科学工程产业技术研究院有限公司 | Upgrading method for enriching organic matters in printing and dyeing sludge |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Kang et al. | The utilization of waste by-products for removing silicate from mineral processing wastewater via chemical precipitation | |
| Huang et al. | A facile disposal of Bayer red mud based on selective flocculation desliming with organic humics | |
| Bahri et al. | Selective separation of gallium from zinc using flotation: Effect of solution pH value and the separation mechanism | |
| AU2019437717B2 (en) | Flotation process for treating coal slime by using salt-containing wastewater | |
| CN104743563B (en) | Process for purifying kaolin | |
| KR101468731B1 (en) | Beneficiation method of low grade scheelite ore | |
| CN108380397A (en) | A kind of recovery method of low concentration calcite type containing mica fluorite tailing | |
| CN103058253A (en) | Method for preparing gypsum by free sulfuric acid in titanium dioxide wastewater | |
| CN104768874A (en) | Process and apparatus for obtaining material of value from a bauxite residue | |
| CN109046752A (en) | A kind of ore-dressing technique of potassium feldspar | |
| CN109133549A (en) | The processing method of acid washing phosphorization sludge | |
| CN106517605A (en) | Zero-discharge process and equipment for desulfurization wastewater | |
| CN103755075A (en) | Technical method for treating silicon carbide acidic wastewater | |
| CN108927293A (en) | A kind of olive pyroxenite type ilmenite stepped-flotation separation method | |
| CN203474564U (en) | Separation device for treating waste emulsion | |
| CN103693710B (en) | Preparation and oil-water separation method of humic acid modified fly ash magnetic material | |
| CN105016451B (en) | Recycling method for iron-enriched sludge of pulping and papermaking factory wastewater | |
| CN103145267A (en) | Method for recovering copper sulfide and ferric hydroxide in auricupride acid wastewater through sulfidization method | |
| CN105645734A (en) | Sludge dewatering and circulating equipment for fluorite tail pulp treatment and application of sludge dewatering and circulating equipment | |
| CN110813045A (en) | Water treatment sludge recovery method | |
| WO2015173741A1 (en) | Process for dewatering mineral tailings by the treatment of these tailings with at least one surfactant and at least one polymer | |
| CN101274760A (en) | Production method for silicon sludge recycle | |
| CN110976103A (en) | Flotation combination method for purifying iron oxide dip-dyed quartz | |
| Maree et al. | Recovery of calcium carbonate from wastewater treatment sludge using a flotation technique | |
| CN106317251B (en) | A kind of seaweed chemical environmental protection Calcific technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190104 |
|
| RJ01 | Rejection of invention patent application after publication |