CN110026410A - A method of metallic zinc in waste is stablized by the generation of spinelle - Google Patents
A method of metallic zinc in waste is stablized by the generation of spinelle Download PDFInfo
- Publication number
- CN110026410A CN110026410A CN201910284406.XA CN201910284406A CN110026410A CN 110026410 A CN110026410 A CN 110026410A CN 201910284406 A CN201910284406 A CN 201910284406A CN 110026410 A CN110026410 A CN 110026410A
- Authority
- CN
- China
- Prior art keywords
- waste
- red mud
- metallic zinc
- zinc
- spinelle
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/20—Agglomeration, binding or encapsulation of solid waste
- B09B3/25—Agglomeration, binding or encapsulation of solid waste using mineral binders or matrix
- B09B3/29—Agglomeration, binding or encapsulation of solid waste using mineral binders or matrix involving a melting or softening step
Abstract
The present invention provides a kind of methods for stablizing metallic zinc in waste by the generation of spinelle, the described method comprises the following steps: (1) measuring the content of iron oxide in red mud；(2) it is further uniformly dispersed after the waste containing metallic zinc being crushed combination drying with red mud according to weight ratio, obtains waste and red mud mixture；(3) the mixture compression moulding for obtaining step (2)；(4) sample of step (3) compression moulding is calcined at 900-1100 DEG C.The present invention sustainably mixes the waste containing metallic zinc using industrial waste red mud, the crystalline product that chemical property is stable and acid-resisting is high can be converted hazardous waste to using low temperature heat-treatment process, so that the waste containing metallic zinc is easily managed, risk in the environment is reduced；Red mud is recycled, the harm for reducing waste to environment can not only be improved, moreover it is possible to waste reclamation；For the method for the present invention products obtained therefrom in acidic environment, anti-leaching performance is good, and consumption energy is small at low cost.
Description
Technical field
The application belongs to heavy metal contaminants process field in waste, and in particular to a kind of steady by the generation of spinelle
Determine the method for metallic zinc in waste.
Background technique
The industrialization of rapid development causes more and more heavy metals to be released in environment.Heavy metal pollution becomes one
Serious environmental problem, because it is different from organic substance, heavy metal is not biodegradable, and can pass through conversion, and
It is accumulated in the ecosystem.Other than causing serious environmental problem, heavy metal it is a large amount of release also with the hair of fatal disease
Sick rate increases closely bound up.If these waste materials rich in heavy metal have not been properly disposed of, these are rich in heavy metal
Waste material can have an adverse effect to environment, public health and economy.The contaminated by heavy metals soil in many cities and agricultural district
Have an adverse effect with water body to agricultural production even human health.In addition, the waste containing various heavy and waste water are logical simultaneously
It often will lead to comprehensive toxicity.Therefore, it is necessary to develop the method for reliable processing heavy metal pollution to help to solve the dirt of these environment
Dye problem.
The prior art has studied adsorbent and cement to the fixed function of toxic metals, and treated product
Leaching performance.The common method for handling heavy metal includes curing/stabilizing technology and vitrification.Curing/stabilizing technology
The package that frame can be interlocked by hydrated mineral, converts the stable solid of chemical property for hazardous waste.To containing heavy metal
Treatment of wastes produced mainly has curing/stabilizing processing and two approach of resource utilization.In many cases, such as in acyclic acidic
In border, absorption and effect of the sintering process products therefrom in terms of anti-leaching used in curing/stabilizing technology are relatively poor.
In addition, vitrification usually requires to consume huge energy, it will huge energy consumption is expended, it is uneconomical.
China Patent Publication No. CN108543517A has invented red mud and the mixture of carbon source carries out oxygen barrier calcining, obtains red
Mud base iron carbon material, recycles the heavy metal ion in red mud base iron carbon material removal waste water, which also needs to introduce largely
Carbon source, the heavy metal for expending more resources, while being only suitable in water removal, and uncomfortable to the heavy metal in solid waste
With.China Patent Publication No. CN105801046A has invented one kind by cement hardener, stabilizing additive, adsorbent, stabilizer
Inorganic agent is formed, cadmium waste residue stable curing will be contained into the body of residue stabilization containing cadmium, then cadmium residue stabilization body landfill will be contained, but it is solid
Change, complex treatment process more using pharmaceutical products, applicability is not strong.China Patent Publication No. CN102560124 describes one kind
Rotary kiln carries out harmless reclamation of solid waste of heavy metal, which realizes the zero-emission of waste water, waste residue, the circulation of resource and comprehensive benefit
With, but its technical process is also easy to produce secondary pollution；China Patent Publication No. CN104475431A describes a kind of high poison waste residue
Stabilisation curing method, the method chemical stabilization and cladding, solidification etc. to mercury, arsenic, chromium, cadmium, cyanide high poison endanger
Dangerous waste has carried out stabilizing solidification.But it needs to carry out repeatedly cladding solidification, and cumbersome is difficult to be widely used in engineering reality
In border.In addition, this method may be corroded by percolate in acid condition, there are the risks of secondary pollution.Chinese patent discloses
Number CN101824543 introduces the vulcanizing treatment and the wherein method of valuable metal recovery of heavy metal waste, and the method is using vulcanization
The techniques such as method combination high pressure, high temperature, flotation carry out vulcanization recycling to valuable metal, and the vulcanization for being also used for heavy metal waste slag stabilizes
Processing, realizes innoxious, the disposal of resources of heavy metal waste slag, but there are heavy metal recoveries not exclusively, cost is too high asks
Topic.Chinese patent CN101747902A is described using trade waste as the environmentally protective soil-solidified-agent of main material and its use
Method, the trade waste which uses include flyash, blast-furnace cinder or silicon powder, and content is 40~70%, in addition
Add pre-gelatinized starch 10~30%, Sodium Polyacrylate 10~30%.The curing agent can simultaneously be planted greening with curing soil and be planted
Object, but it is bad to the solidification effect of heavy metal, and under acid condition, heavy metal dissolves out again.Since waste residue phase structure is complicated, has
Valence tenor is relatively low, and the technical difficulty of synthetical recovery and resource utilization is larger, so common stabilisation/curing process obtains
Solidified body influenced by extraneous unstable factor after will cause inclusion body rupture, cause noxious material in waste to be percolated out again
Come.Therefore, it is necessary to develop a kind of pair of effective stabilization treatment method of metal waste.
Summary of the invention
A kind of generation by spinelle is provided it is an object of the invention to overcome the shortcomings of the prior art place
Stablize the method for metallic zinc in waste.
To achieve the above object, the technical scheme adopted by the invention is as follows: waste is stablized in a kind of generation by spinelle
The method of middle metallic zinc, the described method comprises the following steps:
(1) content of iron oxide in red mud is measured；
(2) it is further uniformly dispersed after the waste containing metallic zinc being crushed combination drying with red mud according to weight ratio,
Obtain waste and red mud mixture；
(3) the mixture compression moulding for obtaining step (2)；
(4) sample of step (3) compression moulding is calcined at 900-1100 DEG C.
The present invention sustainably mixes the waste containing metallic zinc using industrial waste red mud, using Low Temperature Heat Treatment work
Skill can convert hazardous waste to the crystalline product that chemical property is stable and acid-resisting is high, so that the waste containing metallic zinc
It is easily managed, reduces risk in the environment；Red mud is recycled, the harm for reducing waste to environment can not only be improved, moreover it is possible to useless
Object recycles；For the method for the present invention products obtained therefrom in acidic environment, anti-leaching performance is good, and consumption energy is small at low cost.
Preferably, the temperature calcined in step (4) is 1100 DEG C, and the time of calcining is 3 hours.
Preferably, the gradient of temperature speed calcined in step (4) is 10 DEG C/min.
Inventor is by experiment discovery repeatedly, and when sintering temperature is 1100 DEG C, sintering time is short, is conducive to energy saving
Reduce cost.
It preferably, include zinc hydroxide, simple substance zinc or zinc oxide in the waste.
Preferably, the content for the zinc oxide (ZnO) for including in the waste is no more than iron oxide weight in the red mud
23%.
Preferably, temperature dry in step (2) is 105 DEG C, and the dry time is for 24 hours.
Preferably, the method that waste and red mud are pulverized and mixed in step (2) are as follows: waste and red mud are in 60rpm condition
18h is ground in lower ball mill.
Preferably, red mud is dried into 10h at 120 DEG C before iron oxide content in step (1) measurement red mud.
Preferably, the pressure of compression moulding is 250MPa in step (3), and molded samples partial size is
The beneficial effects of the present invention are: the present invention provides a kind of generations by spinelle to stablize metal in waste
The method of zinc, the method have the advantages that:
(1) the raw materials used waste material carried in aluminium refining process of this method, i.e. red mud, so that useless red mud is made
For a kind of feasible resource utilization method for stablizing the waste containing metallic zinc, waste utilization is realized；
(2) present invention is sintered by red mud and the waste containing metallic zinc, all metal (hydroxides in waste
Zinc, simple substance zinc or zinc oxide) it can be integrated in spinel crystal lattice with crystal phase, formation chemical property is stable and acid-resisting is high
Crystalline product, and due to its good acid resistance, powerful spinelle can limit the mobility of toxic metals zinc, so that this hair
Bright gained sintered product has good anti-leaching performance；
(3) ratio and optimal conditions are added present invention optimizes optimal red mud and waste, makes to maximally utilize
Red mud, and generate the good cured product of stability allows after stablizing product that brick/watt for building purposes is made, or
More safely it is arranged in refuse landfill；
(4) present invention process is simple, it is only necessary to common inexpensive industrial waste red mud abundant is used, by simple
Sintering method effectively can sinter the waste containing metallic zinc and red mud into spinelle, significantly reduce metal waste
Mobility in the environment.
Detailed description of the invention
Fig. 1 is the flow diagram of the method for the present invention.
Fig. 2 is the XRD diagram for the final product that the method for the embodiment of the present invention obtains.
Specific embodiment
To better illustrate the object, technical solutions and advantages of the present invention, below in conjunction with specific embodiment to the present invention
It is described further.
Embodiment 1
Red mud from aluminium refinery (is mainly contained into Fe2O3And Al2O3) drying 10h is spare at 120 DEG C.
As a kind of method for stablizing metallic zinc in waste by the generation of spinelle of the embodiment of the present invention, the side
Method the following steps are included:
(1) using component contained by XRF spectrum analysis measurement red mud, the content of iron oxide in red mud is determined；
(2) according to weight ratio, the red mud after the waste containing ZnO and drying is mixed, and with ball mill in 60rpm
Under the conditions of ball milling 18h, by sample mixture of the ball milling after complete 105 DEG C drying for 24 hours, then with agate mortar grind 10min, into
One step homogenizing；
(3) sample obtained as above is depressed to the pellet of φ 20mm in 250MPa pressure；
It (4) is 1100 DEG C in temperature, gradient of temperature speed calcines 3h under the conditions of being 10 DEG C/min；
Wherein, ZnO and the weight ratio of iron oxide in the red mud after drying are 5%.
Embodiment 2
As a kind of method for stablizing metallic zinc in waste by the generation of spinelle of the embodiment of the present invention, this implementation
Example and unique difference of embodiment 1 are as follows: ZnO and it is dry after red mud in the weight ratio of iron oxide be 10%.
Embodiment 3
As a kind of method for stablizing metallic zinc in waste by the generation of spinelle of the embodiment of the present invention, this implementation
Example and unique difference of embodiment 1 are as follows: ZnO and it is dry after red mud in the weight ratio of iron oxide be 15%.
Embodiment 4
As a kind of method for stablizing metallic zinc in waste by the generation of spinelle of the embodiment of the present invention, this implementation
Example and unique difference of embodiment 1 are as follows: ZnO and it is dry after red mud in the weight ratio of iron oxide be 20%.
Embodiment 5
As a kind of method for stablizing metallic zinc in waste by the generation of spinelle of the embodiment of the present invention, this implementation
Example and unique difference of embodiment 1 are as follows: ZnO and it is dry after red mud in the weight ratio of iron oxide be 23%.
Comparative example 1
As a kind of method for stablizing metallic zinc in waste by the generation of spinelle of the embodiment of the present invention, this implementation
Example and unique difference of embodiment 1 are as follows: ZnO and it is dry after red mud in the weight ratio of iron oxide be 25%.
Comparative example 2
Red mud from aluminium refinery (is mainly contained into Fe2O3And Al2O3) drying 10h is spare at 120 DEG C.
As a kind of method for stablizing metallic zinc in waste by the generation of spinelle of comparative example of the present invention, the side
Method the following steps are included:
(1) using component contained by XRF spectrum analysis measurement red mud, the content of iron oxide in red mud is determined；
(2) according to weight ratio, the red mud after the waste containing ZnO and drying is mixed, and with ball mill in 60rpm item
Sample mixture of the ball milling after complete is dried for 24 hours at 105 DEG C, then 10min is ground with agate mortar, into one by ball milling 18h under part
Step homogenizing；
(3) sample obtained as above is depressed to the pellet of φ 20mm in 250MPa pressure；
It (4) is 900 DEG C in temperature, gradient of temperature speed calcines 18h or more under the conditions of being 10 DEG C/min；
It wherein, is 20% by the weight ratio of iron oxide in the red mud after ZnO and drying.
Experimental example 1
The product grind into powder that embodiment 1- embodiment 5, comparative example 1-2 are obtained, and use x-ray powder diffraction instrument
Record the XRD diagram of each powder sample.
As shown in Fig. 2, by embodiment 1- embodiment 5 and comparative example 1 the result shows that, the sample of 3h is calcined in 1100 DEG C
In product, in the case where ZnO content is 5% of the iron oxide weight in red mud, Fe can be observed in XRD diagram2O3Feature
Diffraction maximum shows to have remained a large amount of Fe in sintered sample2O3.When ZnO content increases to 10%, it can be seen that Fe2O3Spread out
Signal reduction is penetrated, this shows that bloodstone is the formation of the main reactant and Zn-Fe spinelle during Zn incorporation.When ZnO contains
When amount increases to 25%, the diffracted signal of ZnO can clearly be observed that, this shows that ZnO cannot since the Fe in red mud is insufficient
Incorporation completely.It should be 23% of the iron oxide weight in red mud by the optimised quantity to ZnO finally studied.
By comparing embodiment 4 and comparative example 2 the result shows that, when calcination temperature is lower than 1000 DEG C, can detect
Fe2O3With ZnO signal, show that ZnO will be fully converted to Zn-Fe spinelle and need calcination temperature at 1000 DEG C or more.And with temperature
The raising of degree, the crystallinity for forming Zn-Fe spinelle are become better and better, and peak type is also more and more sharp.
Experimental example 2
Using zinc oxide as control, to final product (the Zn-Fe point of the method for metallic zinc in the stabilization waste of embodiment 4
Spar) through standard toxicity lixiviation process (TCLP) leaching experiment.
The results are shown in Table 1, the leachate for the final product that the method for metallic zinc obtains in the stabilization waste through embodiment 4
In zinc concentration far below zinc concentration in the leachate of zinc oxide, illustrate that method of the invention can be effectively stable discarded
Metallic zinc in object, obtained final product have good acid resistance and anti-leaching performance.
The not stabilized zinc oxide of table 1. and be formed by zinc-hercynite through standard toxicity lixiviation process (TCLP) leach
Zinc concentration in leachate (No. 2 leachates, initial pH=2.9) afterwards.
| Extraction time | 10th day | 26th day |
| Zinc oxide, mg/L | 3221 | 3310 |
| Zinc-hercynite, mg/L | 490 | 498 |
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than protects to the present invention
The limitation of range is protected, although the invention is described in detail with reference to the preferred embodiments, those skilled in the art should
Understand, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the essence of technical solution of the present invention
And range.
Claims (9)
1. it is a kind of by spinelle generation stablize waste in metallic zinc method, which is characterized in that the method includes with
Lower step:
(1) content of iron oxide in red mud is measured；
(2) it is further uniformly dispersed, obtains after the waste containing metallic zinc being crushed combination drying with red mud according to weight ratio
Waste and red mud mixture；
(3) the mixture compression moulding for obtaining step (2)；
(4) sample of step (3) compression moulding is calcined at 900-1100 DEG C.
2. the method according to claim 1, wherein step (4) in calcine temperature be 1100 DEG C, calcining when
Between be 3 hours.
3. the method according to claim 1, wherein in the waste include zinc hydroxide, simple substance zinc or
Zinc oxide.
4. according to the method described in claim 3, it is characterized in that, the content for the zinc oxide for including in the waste is no more than
The 23% of iron oxide weight in the red mud.
5. the method according to claim 1, wherein temperature dry in step (2) is 105 DEG C, when dry
Between for for 24 hours.
6. the method according to claim 1, wherein the method that waste and red mud are pulverized and mixed in step (2)
Are as follows: waste and red mud grind 18h in ball mill under the conditions of 60rpm.
7. the method according to claim 1, wherein by red mud before iron oxide content in step (1) measurement red mud
10h is dried at 120 DEG C.
8. the method according to claim 1, wherein in step (3) compression moulding pressure be 250 MPa, at
Type sample particle diameter is
9. the method according to claim 1, wherein step (4) in calcine gradient of temperature speed be 10 DEG C/
min。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910284406.XA CN110026410A (en) | 2019-04-09 | 2019-04-09 | A method of metallic zinc in waste is stablized by the generation of spinelle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910284406.XA CN110026410A (en) | 2019-04-09 | 2019-04-09 | A method of metallic zinc in waste is stablized by the generation of spinelle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110026410A true CN110026410A (en) | 2019-07-19 |
Family
ID=67237876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910284406.XA Pending CN110026410A (en) | 2019-04-09 | 2019-04-09 | A method of metallic zinc in waste is stablized by the generation of spinelle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110026410A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113562944A (en) * | 2021-08-02 | 2021-10-29 | 天津科技大学 | Metal curing agent and application thereof in fixing heavy metal chromium in tannery sludge |
| CN114074104A (en) * | 2021-11-04 | 2022-02-22 | 浙江工商大学 | Method for co-processing chromium-containing hazardous waste and zinc-containing waste residue |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5916123A (en) * | 1990-03-16 | 1999-06-29 | Sevenson Environmental Services, Inc. | Fixation and stabilization of metals in contaminated soils and materials |
| CN102107208A (en) * | 2009-12-23 | 2011-06-29 | 中国科学院生态环境研究中心 | Method for restoring heavy metal polluted soil in mine field |
| CN102234167A (en) * | 2010-05-06 | 2011-11-09 | 中国科学院生态环境研究中心 | Method for stabilizing phosphorus and heavy metal in sludge of sewage treatment factory |
| CN106348714A (en) * | 2016-08-30 | 2017-01-25 | 北京玉锦资源与环境技术研究院（有限合伙） | Cementing filling material for co-processing zinc-containing dangerous waste of mine and preparation method of cementing filling material |
| CN107381993A (en) * | 2017-09-05 | 2017-11-24 | 常州大学 | A kind of method using steel plant's pickling iron containing sludge hot setting electroplating sludge |
| CN107954648A (en) * | 2017-11-20 | 2018-04-24 | 马鞍山豹龙新型建材有限公司 | A kind of preparation method for adding the steaming-free air-adding brick for burning till plating slag mud |
-
2019
- 2019-04-09 CN CN201910284406.XA patent/CN110026410A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5916123A (en) * | 1990-03-16 | 1999-06-29 | Sevenson Environmental Services, Inc. | Fixation and stabilization of metals in contaminated soils and materials |
| CN102107208A (en) * | 2009-12-23 | 2011-06-29 | 中国科学院生态环境研究中心 | Method for restoring heavy metal polluted soil in mine field |
| CN102234167A (en) * | 2010-05-06 | 2011-11-09 | 中国科学院生态环境研究中心 | Method for stabilizing phosphorus and heavy metal in sludge of sewage treatment factory |
| CN106348714A (en) * | 2016-08-30 | 2017-01-25 | 北京玉锦资源与环境技术研究院（有限合伙） | Cementing filling material for co-processing zinc-containing dangerous waste of mine and preparation method of cementing filling material |
| CN107381993A (en) * | 2017-09-05 | 2017-11-24 | 常州大学 | A kind of method using steel plant's pickling iron containing sludge hot setting electroplating sludge |
| CN107954648A (en) * | 2017-11-20 | 2018-04-24 | 马鞍山豹龙新型建材有限公司 | A kind of preparation method for adding the steaming-free air-adding brick for burning till plating slag mud |
Non-Patent Citations (1)
| Title |
|---|
| MINHUA SU ET AL.: "Evaluation on the stabilization of Zn/Ni/Cu in spinel forms: Low-cost red mud as an effective precursor", 《ENVIRONMENTAL POLLUTION》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113562944A (en) * | 2021-08-02 | 2021-10-29 | 天津科技大学 | Metal curing agent and application thereof in fixing heavy metal chromium in tannery sludge |
| CN114074104A (en) * | 2021-11-04 | 2022-02-22 | 浙江工商大学 | Method for co-processing chromium-containing hazardous waste and zinc-containing waste residue |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wang et al. | Comprehensive utilization status of red mud in China: A critical review | |
| Li et al. | Utilization of red mud and Pb/Zn smelter waste for the synthesis of a red mud-based cementitious material | |
| Asokan et al. | Hazardous jarosite use in developing non-hazardous product for engineering application | |
| He et al. | Hazard-free treatment and resource utilisation of electrolytic manganese residue: A review | |
| Lu et al. | Leaching of metals from cement under simulated environmental conditions | |
| WO2019114198A1 (en) | Method for calcining cyanidation slag to recover valuable metals and synchronously prepare ceramsite | |
| Ledesma et al. | The role of pH on leaching of heavy metals and chlorides from electric arc furnace dust in cement-based mortars | |
| Zhou et al. | Reductive solidification/stabilization of chromate in municipal solid waste incineration fly ash by ascorbic acid and blast furnace slag | |
| Wang et al. | Sustainable stabilization/solidification of the Pb, Zn, and Cd contaminated soil by red mud-derived binders | |
| CN102218428A (en) | Treatment method of arsenic slag | |
| CN102180641A (en) | Method and process for high strength curing of drilling waste | |
| CN102974601A (en) | Arsenic pollution soil stabilizer and method for repairing contaminated soil | |
| Min et al. | Comparison of arsenic immobilization properties among calcium silicate hydrate, ettringite, and friedel's salt in a slag‐based binder | |
| CN104162533A (en) | Harmless processing method of wastes containing heavy metals | |
| Han | Industrial solid waste recycling in western China | |
| WO2016108245A1 (en) | Process for complete conversion of multiple industrial wastes to sustainable alternatives and usable products | |
| Lan et al. | Mechanochemical modification of electrolytic manganese residue: Ammonium nitrogen recycling, heavy metal solidification, and baking-free brick preparation | |
| Wang et al. | Cleaner and safer disposal of electrolytic manganese residues in cement-based materials using direct electric curing | |
| CN109575880A (en) | A method of I type deicing salt is prepared using garbage flying ash | |
| CN110026410A (en) | A method of metallic zinc in waste is stablized by the generation of spinelle | |
| Huang et al. | Leaching behavior of heavy metals from cement pastes using a modified toxicity characteristic leaching procedure (TCLP) | |
| CN110668466B (en) | Harmless treatment method for electrolytic manganese slag | |
| CN107235709A (en) | A kind of method that incineration of refuse flyash is granulated with sludge mixing low temp | |
| Li et al. | Progress in comprehensive utilization of electrolytic manganese residue: a review | |
| CN110041048A (en) | A method of metallic copper in waste is stablized by the generation of spinelle |
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: 20190719 |
|
| RJ01 | Rejection of invention patent application after publication |