CN107417255A - The recycling treatment Application way of chromium slag, tailings in vanadium extraction waste pollutant - Google Patents
The recycling treatment Application way of chromium slag, tailings in vanadium extraction waste pollutant Download PDFInfo
- Publication number
- CN107417255A CN107417255A CN201710817020.1A CN201710817020A CN107417255A CN 107417255 A CN107417255 A CN 107417255A CN 201710817020 A CN201710817020 A CN 201710817020A CN 107417255 A CN107417255 A CN 107417255A
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- China
- Prior art keywords
- chromium slag
- tailings
- vanadium extraction
- parts
- treatment application
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/138—Waste materials; Refuse; Residues from metallurgical processes, e.g. slag, furnace dust, galvanic waste
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/1325—Hazardous waste other than combustion residues
- C04B33/1327—Hazardous waste other than combustion residues containing heavy metals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Abstract
The present invention relates to chromium slag, the recycling treatment Application way of tailings in vanadium extraction waste pollutant, by following parts by weight feeding：Chromium slag or by 30 50 parts chromium slag contaminated of soil, 0 30 parts of china clay, 20 30 parts of tailings in vanadium extraction, 10 20 parts of reducing agent, stirred evenly through the technique mixing such as dry grinding or wet-milling, crushing and powder is made or adds water that pug, mud is made, reprocessing is shaped to Preburning material, Preburning material under 1200 ± 30 DEG C of high temperature reducing conditions sintering curing into black ceramic.The present invention can not only realize the harmless treatment of chromium slag, tailings in vanadium extraction simultaneously, can also prepare hardness and the higher nontoxic black ceramic of intensity.
Description
Technical field
The present invention relates to a kind of harmless treatment Application way of noxious waste pollution thing, more particularly to chromium slag, vanadium extraction
The recycling treatment Application way of tailings and its contaminated soil, belongs to the utilization of resources and environmental protection technical field.
Background technology
Chromium slag is to produce caused industrial residue during crome metal and chromic salts, chromium slag air storage, and what is polluted first is
Soil, there is the place pollution soil depth of test chromium slag muck product up to more than 10 meters, have virose Cr in topsoil6+Concentration reaches
1500mg/kg.Not only so, drenched and soaked by sleet, contained Cr6+It is dissolved in permeate the ground water or entrance river, lake, pollution
Water source.Cr in water in serious contaminated zone6+Content may be up to every liter of tens of micrograms, more than drinking water standard several times.Cr VI, chromium
Compound and chromium compound aerosol etc., human and livestock health can be endangered in a variety of forms.The utilization of chromium slag is relatively simple at present, right
The problems such as processing of pollution of chromium is also undesirable, and it is difficult to repair, and removing toxic substances is not thorough still has.
Tailings in vanadium extraction is that iron and steel enterprise uses caused tailings after vanadium slag high temperature sodium roasting technique vanadium extraction, annual yield
Nearly million tons, wherein rich in valuable components such as vanadium, chromium, silicon, iron, sodium.The research master utilized both at home and abroad for tailings in vanadium extraction
Concentrating on sodium roasting, vanadium extraction, reduction put forward three aspects such as iron and construction material application, but existed only for single group again
Point recovery, the valuable component rate of recovery is low, tailings using it is uneconomical the problems such as, a large amount of stockpilings, not only cause the valuable money of tailings at present
Source wastes, and high-alkali, the heavy metal in tailings can cause to have a strong impact on to environment.
The harmless treatment and comprehensive utilization of these toxic wastes and its pollutant are the active demands of environmental protection, if
The direction of the clean utilization, undoubtedly recycling to multiple pollutant can be realized simultaneously.
The content of the invention
The purpose of the present invention is to overcome above-mentioned deficiency and provide at the recycling of a kind of chromium slag, tailings in vanadium extraction waste pollutant
Manage Application way, can not only realize the harmless treatment of chromium slag, tailings in vanadium extraction simultaneously, can also prepare hardness and intensity compared with
High nontoxic black ceramic.
To achieve the above object, the present invention uses following technical scheme：
The recycling treatment Application way of chromium slag, tailings in vanadium extraction waste pollutant, including step are as follows：
(1) following parts by weight feeding is pressed：Chromium slag or by chromium slag contaminated soil 30-50 parts, china clay 0-30 parts, tailings in vanadium extraction
20-30 parts, reducing agent 10-20 parts；
(2) dried by chromium slag or by chromium slag contaminated soil with after ball mill wet-milling to 80-120 mesh；
(3) dry grinded respectively to 60-100 mesh after drying china clay, tailings in vanadium extraction and reducing agent；
(4) raw material made from step (2) and (3) is put into mixer, is directly stirred into powder, or added appropriate
Water, which stirs, is made pug or mud；
(5) it is powder press is dry-pressing formed, it is molded into by pug extruder for shaping, or by mud using gypsum
Slurry shaping, is made mud bar, mud ball or clod；
(6) mud bar, mud ball or clod are put into kiln the sintering curing under 1200 ± 30 DEG C of high temperature reducing conditions, it is cold
But nontoxic black ceramic is made.
Described chromium slag and by the wet-milling moisture content of chromium slag contaminated soil in 18-25wt%.
Described china clay is the one or more in kaolin, bentonite, atlapulgite.
Described chromium slag or by chromium slag contaminated soil, china clay, tailings in vanadium extraction, reducing agent weight ratio preferably 40:25:25:
10。
Described pug moisture content 15-25wt%, described mud moisture content 35-45wt%.
Described reducing agent is the one or more of coke, coal, charcoal, cinder or gangue.
The time of described sintering curing is sintering 30-60min, is incubated 20-40min.
The beneficial effects of the invention are as follows：
(1) recycling of tailings in vanadium extraction, chromium slag and its a variety of wastes of contaminated soil is realized, reduces the wasting of resources and ring
Pollute in border；
(2) this method can be by the Cr in poisonous chromium slag6+Restore All is Cr3+, and by bonding, isolate, be enclosed in black pottery
In the glass phase crystal grain of porcelain, constitutionally stable compound is formed, reaches the target thoroughly detoxified, secondary pollution will not be produced；Will
After obtained black ceramic is ground into powder, adds in deionized water and boil 1-24 hours, with spectroscopic methodology detection wherein Cr6+Contain
Amount is less than 0.147ppm, far below national standard 0.5ppm, it is sufficient to proves that removing toxic substances is thorough.
(3) nontoxic black ceramic made from, intensity, extreme hardness, not burn into not aging, porcelain ball and porcelain bar can be used for generation
Be added to for stone or yellow ground in concrete or making concrete road ground, standard-sized porcelain block is cleaved, polishing plus
It can be used for after work reliable instead of black ceramic tiles decorative architecture thing ground, metope, industrialization economic benefit.
Embodiment
With reference to specific embodiment, the present invention is further described.
Embodiment 1
Dried after moisture content about 18wt% poisonous chromium slag is used into ball mill wet-milling to 100 mesh；By tailings in vanadium extraction and also
Former agent is dry grinded to 80 mesh respectively after drying, and is 50 according to chromium slag, tailings in vanadium extraction and reducing agent part by weight：30：20 mixed materials,
Add water to stir and aqueous 20wt% pug is made, chromium slag mud bar is extruded into by screw extruder, after drying in kiln
With 1200 DEG C of high temperature sintering 30min, and after being incubated 20min, cooling obtains the nontoxic black porcelain bar of stable performance, will made from it is black
After color ceramics are ground into powder, add in deionized water and boil, with spectroscopic methodology detection wherein Cr6+Content be 0.09ppm, remaining
Chromium all with Cr2O3Stable compound form be present in porcelain glass phase.
Embodiment 2
Dried after moisture content about 20wt% poisonous chromium slag is used into ball mill wet-milling to 120 mesh；By china clay (bentonite),
Tailings in vanadium extraction and reducing agent are dry grinded to 100 mesh respectively after drying, according to chromium slag, china clay, tailings in vanadium extraction and reducing agent part by weight
For 30：30：30：10 four kinds of raw materials of mixing, add water to stir and aqueous 35wt% mud are made, be molded by gypsum mould grouting
For chromium slag mud ball, with 1220 DEG C of high temperature sintering 25min in kiln after drying, and after being incubated 30min, cooling obtains stable performance
Nontoxic black porcelain ball, its Cr6+Content is 0.12ppm.
Embodiment 3
Dried after moisture content about 25wt% is used into ball mill wet-milling to 80 mesh by chromium slag contaminated soil；By china clay
(kaolin), tailings in vanadium extraction and reducing agent are dry grinded to 60 mesh respectively after drying, according to by chromium slag contaminated soil, china clay, vanadium extraction
Tailings and reducing agent part by weight are 40:25:25:10 mixing four kinds of raw materials, be stirred into dry mash, by press dry-pressing into
Type is chromium slag clod, and with 1210 DEG C of high temperature sintering 50min in kiln after drying, and after being incubated 40min, it is steady that cooling obtains performance
Fixed nontoxic black porcelain block, its Cr6+Content is 0.07ppm.
Embodiment 4
Dried after moisture content about 18wt% is used into ball mill wet-milling to 100 mesh by chromium slag contaminated soil；By vanadium extraction
Tailings and reducing agent are dry grinded to 80 mesh respectively after drying, according to by chromium slag contaminated soil, tailings in vanadium extraction and reducing agent weight ratio
Example is 50：30：20 mixed materials, add water to stir and aqueous 20wt% pug is made, chromium is extruded into by screw extruder
Slag mud bar, with 1200 DEG C of high temperature sintering 30min in kiln after drying, and after being incubated 20min, cooling obtains the nothing of stable performance
Malicious black porcelain bar, after obtained black ceramic is ground into powder, adds in deionized water and boil, with spectroscopic methodology detection wherein
Cr6+Content be 0.08ppm, remaining chromium is all with Cr2O3Stable compound form be present in porcelain glass phase.
Comparative example
Tailings in vanadium extraction is crushed to 60 mesh, and dry-pressing formed by press is block biscuit, and 1100 DEG C are put into stove after drying
High temperature sintering 50min is calcined, and after being incubated 40min, cooling obtains black porcelain block.
Compared with comparative example, black ceramic porcelain rate made from embodiment 3 is high, density is high, stability is good, rupture strength energy
Reach 60-100Mpa, black ceramic rupture strength is only 37-45Mpa made from comparative example.
Above is the present invention is discussed in detail in conjunction with specific embodiments, protection scope of the present invention not limited to this.
Claims (7)
1. the recycling treatment Application way of chromium slag, tailings in vanadium extraction waste pollutant, it is characterized in that, including step is as follows：
(1) following parts by weight feeding is pressed：Chromium slag or by chromium slag contaminated soil 30-50 parts, china clay 0-30 parts, tailings in vanadium extraction 20-
30 parts, reducing agent 10-20 parts；
(2) dried by chromium slag or by chromium slag contaminated soil with after ball mill wet-milling to 80-120 mesh；
(3) dry grinded respectively to 60-100 mesh after drying china clay, tailings in vanadium extraction and reducing agent；
(4) raw material made from step (2) and (3) is put into mixer, is directly stirred into powder, or added suitable quantity of water and stir
Mix and pug or mud uniformly is made；
(5) it is powder press is dry-pressing formed, by pug extruder for shaping, or by mud using gypsum mould grouting into
Type, mud bar, mud ball or clod is made；
(6) mud bar, mud ball or clod are put into kiln the sintering curing under 1200 ± 30 DEG C of high temperature reducing conditions, cooling system
Obtain nontoxic black ceramic.
2. the recycling treatment Application way of chromium slag according to claim 1, tailings in vanadium extraction waste pollutant, its feature
Be, described chromium slag and by the wet-milling moisture content of chromium slag contaminated soil in 18-25wt%.
3. the recycling treatment Application way of chromium slag according to claim 1, tailings in vanadium extraction waste pollutant, its feature
Be, described chromium slag or by chromium slag contaminated soil, china clay, tailings in vanadium extraction, reducing agent weight ratio be 40:25:25:10.
4. the recycling treatment Application way of chromium slag according to claim 1, tailings in vanadium extraction waste pollutant, its feature
It is described pug moisture content 15-25wt%, described mud moisture content 35-45wt%.
5. the recycling treatment Application way of chromium slag according to claim 1, tailings in vanadium extraction waste pollutant, its feature
It is that described reducing agent is the one or more of coke, coal, charcoal, cinder or gangue.
6. the recycling treatment Application way of chromium slag according to claim 1, tailings in vanadium extraction waste pollutant, its feature
It is that the time of described sintering curing is sintering 30-60min, is incubated 20-40min.
7. the recycling treatment Application way of chromium slag according to claim 1, tailings in vanadium extraction waste pollutant, its feature
It is that described china clay is the one or more in kaolin, bentonite, atlapulgite.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710817020.1A CN107417255A (en) | 2017-09-12 | 2017-09-12 | The recycling treatment Application way of chromium slag, tailings in vanadium extraction waste pollutant |
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| CN201710817020.1A CN107417255A (en) | 2017-09-12 | 2017-09-12 | The recycling treatment Application way of chromium slag, tailings in vanadium extraction waste pollutant |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109500046A (en) * | 2018-09-21 | 2019-03-22 | 浙江金泰莱环保科技有限公司 | Chromium strengthens cured method in one kind waste containing chromium |
| CN110052473A (en) * | 2019-04-16 | 2019-07-26 | 北京净界新宇环保科技有限公司 | A kind of heavy metal chromium pollution processing method |
| CN110330248A (en) * | 2019-07-17 | 2019-10-15 | 山东省科学院新材料研究所 | Chrome-solid waste harmless disposal method, porcelain aggregate and application |
| CN112939567A (en) * | 2019-12-11 | 2021-06-11 | 辽宁省轻工科学研究院有限公司 | Black ceramic tile prepared by using vanadium extraction tailings and preparation method thereof |
| CN113582666A (en) * | 2021-08-06 | 2021-11-02 | 清远市简一陶瓷有限公司 | Black body prepared by taking iron ore slag as raw material and ceramic tile |
| CN114349477A (en) * | 2022-01-12 | 2022-04-15 | 湖南国发控股有限公司 | Detoxification formula with high chromium slag amount and process for producing synergistic light aggregate |
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| CN101468911A (en) * | 2007-12-28 | 2009-07-01 | 天津市大钧科技开发有限公司 | High-temperature calcination technology for 20-30% chromic slag and 40-60% alkaline residue brick making material under 1100 DEG C +/- 100 DEG C in vertical kiln |
| CN102584175A (en) * | 2012-02-06 | 2012-07-18 | 青岛理工大学 | Method for preparing ultra-thin highly-waterproof type ceramsite by taking sediments and chromium slag as raw materials |
| CN102910892A (en) * | 2012-09-28 | 2013-02-06 | 新嘉理（江苏）陶瓷有限公司 | Black ceramic plate prepared by natural minerals and extracted vanadium tailings and preparation method of black ceramic plate |
| CN105294112A (en) * | 2015-11-27 | 2016-02-03 | 孙典学 | Ceramic powder |
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| CN101468911A (en) * | 2007-12-28 | 2009-07-01 | 天津市大钧科技开发有限公司 | High-temperature calcination technology for 20-30% chromic slag and 40-60% alkaline residue brick making material under 1100 DEG C +/- 100 DEG C in vertical kiln |
| CN102584175A (en) * | 2012-02-06 | 2012-07-18 | 青岛理工大学 | Method for preparing ultra-thin highly-waterproof type ceramsite by taking sediments and chromium slag as raw materials |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109500046A (en) * | 2018-09-21 | 2019-03-22 | 浙江金泰莱环保科技有限公司 | Chromium strengthens cured method in one kind waste containing chromium |
| CN110052473A (en) * | 2019-04-16 | 2019-07-26 | 北京净界新宇环保科技有限公司 | A kind of heavy metal chromium pollution processing method |
| CN110330248A (en) * | 2019-07-17 | 2019-10-15 | 山东省科学院新材料研究所 | Chrome-solid waste harmless disposal method, porcelain aggregate and application |
| CN112939567A (en) * | 2019-12-11 | 2021-06-11 | 辽宁省轻工科学研究院有限公司 | Black ceramic tile prepared by using vanadium extraction tailings and preparation method thereof |
| CN113582666A (en) * | 2021-08-06 | 2021-11-02 | 清远市简一陶瓷有限公司 | Black body prepared by taking iron ore slag as raw material and ceramic tile |
| CN113582666B (en) * | 2021-08-06 | 2022-07-05 | 清远市简一陶瓷有限公司 | Black body prepared by taking iron ore slag as raw material and ceramic tile |
| CN114349477A (en) * | 2022-01-12 | 2022-04-15 | 湖南国发控股有限公司 | Detoxification formula with high chromium slag amount and process for producing synergistic light aggregate |
| CN114349477B (en) * | 2022-01-12 | 2023-08-25 | 湖南国发控股有限公司 | High chromium slag detoxification formula and synergistic lightweight aggregate production process |
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Application publication date: 20171201 |
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