CN106276936A - A kind of remove the method for ferrum in Kaolin - Google Patents
A kind of remove the method for ferrum in Kaolin Download PDFInfo
- Publication number
- CN106276936A CN106276936A CN201610603695.1A CN201610603695A CN106276936A CN 106276936 A CN106276936 A CN 106276936A CN 201610603695 A CN201610603695 A CN 201610603695A CN 106276936 A CN106276936 A CN 106276936A
- Authority
- CN
- China
- Prior art keywords
- kaolin
- serosity
- ferrum
- remove
- stirred continuously
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/20—Silicates
- C01B33/36—Silicates having base-exchange properties but not having molecular sieve properties
- C01B33/38—Layered base-exchange silicates, e.g. clays, micas or alkali metal silicates of kenyaite or magadiite type
- C01B33/40—Clays
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Compounds Of Iron (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
The invention belongs to a kind of remove the method for ferrum in Kaolin, comprise the following steps: 1. selecting iron content Kaolin below 0.8%, slurrying, concentration of slurry is 15 25%；2. in the serosity that 1. step is prepared, add thiourea dioxide, and to regulate slurry pH value be 7.5 8.0, is stirred continuously, and keeps 25 30min at 45 100 DEG C；2. 3. step process the serosity sulfur acid for adjusting pH value obtained is 2.0 3.0, is subsequently adding oxalic acid, is stirred continuously, and keeps 25 30min at 45 100 DEG C；4. serosity filter pressing step 3. obtained i.e. obtains the Kaolin after bleaching.The present invention substitutes sodium dithionite by novel reducer thiourea dioxide, kaolinic iron-holder after bleaching can reach less than 0.2%, and environment is not polluted, moreover it is possible to effectively reduce COD and BOD in waste water, there is important economic benefit and environmental benefit.
Description
Technical field
The invention belongs to kaolin bleaching technical field, be specifically related to a kind of remove the method for ferrum in Kaolin.
Background technology
Kaolin is as a kind of common mineral, and purposes is extremely extensive, but in major part Kaolin, impurity is more, needs
Further purifying, and ferrum is as affect the principal element of Kaolin whiteness, is badly in need of effective removal.Present method for removing iron
Mainly there are Physical and chemical method.Physical mainly uses magnetic separator, although can remove a part, but effect is the most limited, and
Relatively costly, equipment is more expensive.And chemical method de-ferrous effect ratio is more significant, and with low cost, it is suitable for industrialized production.Currentization
Learn and mainly use reducing agent sodium dithionite except ferrum, be commonly called as sodium hydrosulfite, but it and non insurance in fact, the most extremely dangerous, several
Relevant accident all can be had to occur every year, and sodium hydrosulfite has bad smell, endangers workers ' health, has greater environmental impacts, no
Meet the developing direction of green economy recycling economy.
Summary of the invention
It is an object of the invention to provide that a kind of technique is simple, good impurity removing effect, safety and environmental protection remove ferrum in Kaolin
Method.
For achieving the above object, the technical solution used in the present invention is a kind of to remove the method for ferrum in Kaolin, including with
Lower step: 1. selecting iron content Kaolin below 0.8%, slurrying, concentration of slurry is 15-25%；2. 1. prepare to step
Serosity adds thiourea dioxide, and is 7.5-8.0 with sodium hydroxide regulation slurry pH value, be stirred continuously, and at 45-100 DEG C
Lower holding 25-30min；2. 3. step process the serosity sulfur acid for adjusting pH value obtained is 2.0-3.0, is subsequently adding oxalic acid,
It is stirred continuously, and at 45-100 DEG C, keeps 25-30min；4. serosity filter pressing step 3. obtained i.e. obtains the kaolinite after bleaching
Soil.
Preferably, the described step 2. middle 0.3%-0.6% that thiourea dioxide amount is serosity quality added.
Preferably, the 0.5%-1% that addition is serosity quality of described step 3. mesoxalic acid.
Kaolin raw ore can be used prior art by iron content Kaolin below 0.8%, as magnetic separation and washing combine
Process obtains.
Percentage composition involved in the present invention if no special instructions, is all weight percentage.
The beneficial effect comprise that: the present invention substitutes hydrosulfurous acid by novel reducer thiourea dioxide
Sodium, bleaching effect good (the kaolinic iron-holder after bleaching can reach less than 0.2%), and environment is not polluted, moreover it is possible to have
Effect reduces COD and BOD in waste water, has important economic benefit and environmental benefit.
Detailed description of the invention
Below in conjunction with embodiment, embodiment of the present invention are described in detail, but those skilled in the art will
Understanding, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the present invention.
Embodiment 1
A kind of remove the method for ferrum in Kaolin, comprise the following steps: 1. selecting iron content is the Kaolin of 0.78wt%, slurrying,
Concentration of slurry is 15%；2. weigh 15kg serosity, add 0.045kg thiourea dioxide, and with sodium hydroxide regulation slurry pH value be
7.5, it is stirred continuously, and at 45 DEG C, keeps 25min；2. 3. step process the serosity sulfur acid for adjusting pH value obtained is 2.0,
It is subsequently adding 0.12kg oxalic acid, is stirred continuously, and at 45 DEG C, keep 25min；4. the serosity filter pressing that 3. step obtained and get final product
Kaolin after bleaching.
Embodiment 2
A kind of remove the method for ferrum in Kaolin, comprise the following steps: 1. selecting iron content is the Kaolin of 0.75wt%, slurrying,
Concentration of slurry is 20%；2. weigh 20kg serosity, add 0.08kg thiourea dioxide, and with sodium hydroxide regulation slurry pH value be
7.5, it is stirred continuously, and at 65 DEG C, keeps 25min；2. 3. step process the serosity sulfur acid for adjusting pH value obtained is 2.5,
It is subsequently adding 0.1kg oxalic acid, is stirred continuously, and at 65 DEG C, keep 25min；4. serosity filter pressing step 3. obtained i.e. obtains drift
Kaolin after Bai.
Embodiment 3
A kind of remove the method for ferrum in Kaolin, comprise the following steps: 1. selecting iron content is the Kaolin of 0.76wt%, slurrying,
Concentration of slurry is 25%；2. weigh 25kg serosity, add 0.12kg thiourea dioxide, and with sodium hydroxide regulation slurry pH value be
8.0, it is stirred continuously, and at 95 DEG C, keeps 25min；2. 3. step process the serosity sulfur acid for adjusting pH value obtained is 3.0,
It is subsequently adding 0.25kg oxalic acid, is stirred continuously, and at 95 DEG C, keep 25min；4. the serosity filter pressing that 3. step obtained and get final product
Kaolin after bleaching.
Result of the test
Kaolin after the bleaching prepare embodiment 1-3 measures iron content after drying, acquired results such as following table:
。
Although illustrate and describing the present invention with specific embodiment, but it will be appreciated that without departing substantially from the present invention's
May be made that in the case of spirit and scope many other change and amendment.It is, therefore, intended that in the following claims
Including all such changes and modifications belonged in the scope of the invention.
Claims (3)
1. remove the method for ferrum in Kaolin for one kind, it is characterised in that comprise the following steps: 1. select iron content below 0.8%
Kaolin, slurrying, concentration of slurry is 15-25%；2. in the serosity that 1. step is prepared, add thiourea dioxide, and regulate slurry
Liquid pH value is 7.5-8.0, is stirred continuously, and keeps 25-30min at 45-100 DEG C；3. 2. step is processed the serosity obtained
Regulation pH value is 2.0-3.0, is subsequently adding oxalic acid, is stirred continuously, and keeps 25-30min at 45-100 DEG C；4. by step 3.
The serosity filter pressing that obtains and get final product.
2. the method for ferrum in removal Kaolin as claimed in claim 2, it is characterised in that: the described step 2. middle dioxy added
Change the 0.3%-0.6% that thiourea amount is serosity quality.
3. as claimed in claim 1 remove the method for ferrum in Kaolin, it is characterised in that: described step 3. in, adding of oxalic acid
Enter the 0.5%-1% that amount is serosity quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610603695.1A CN106276936B (en) | 2016-07-28 | 2016-07-28 | A kind of method of iron in removal kaolin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610603695.1A CN106276936B (en) | 2016-07-28 | 2016-07-28 | A kind of method of iron in removal kaolin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106276936A true CN106276936A (en) | 2017-01-04 |
| CN106276936B CN106276936B (en) | 2019-02-22 |
Family
ID=57662522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610603695.1A Active CN106276936B (en) | 2016-07-28 | 2016-07-28 | A kind of method of iron in removal kaolin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106276936B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106946264A (en) * | 2017-03-09 | 2017-07-14 | 兖矿北海高岭土有限公司 | A kind of method for improving kaolin quality after bleaching |
| CN110467218A (en) * | 2019-09-20 | 2019-11-19 | 叶灵 | The method for bleaching of metatitanic acid in a kind of Titanium White Production By Sulfuric Acid Process |
| CN110845325A (en) * | 2019-12-05 | 2020-02-28 | 山东省化工研究院 | Production process of ferrous fumarate |
| CN111017944A (en) * | 2019-12-31 | 2020-04-17 | 濮阳宏业环保新材料股份有限公司 | Grinding and bleaching process for water-milled kaolin |
| CN111410204A (en) * | 2020-05-08 | 2020-07-14 | 鑫中科贸易(深圳)有限公司 | Method for preparing high-grade kaolin from sludge soil |
| CN111422879A (en) * | 2020-04-10 | 2020-07-17 | 深圳市宏途建筑有限公司 | Low-grade kaolin multistep iron-removing and whitening method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1555347A (en) * | 2001-09-14 | 2004-12-15 | 英默里斯颜料公司 | Integrated process for simultaneous beneficiation, leaching, and dewatering of kaolin clay suspension |
-
2016
- 2016-07-28 CN CN201610603695.1A patent/CN106276936B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1555347A (en) * | 2001-09-14 | 2004-12-15 | 英默里斯颜料公司 | Integrated process for simultaneous beneficiation, leaching, and dewatering of kaolin clay suspension |
Non-Patent Citations (2)
| Title |
|---|
| 付月华等: "二氧化硫脲漂白高岭土的试验研究", 《中国陶瓷工业》 * |
| 陈楷翰: "二氧化硫脲/氯化铝联合高岭土漂白新工艺研究", 《中国陶瓷》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106946264A (en) * | 2017-03-09 | 2017-07-14 | 兖矿北海高岭土有限公司 | A kind of method for improving kaolin quality after bleaching |
| CN110467218A (en) * | 2019-09-20 | 2019-11-19 | 叶灵 | The method for bleaching of metatitanic acid in a kind of Titanium White Production By Sulfuric Acid Process |
| CN110845325A (en) * | 2019-12-05 | 2020-02-28 | 山东省化工研究院 | Production process of ferrous fumarate |
| CN111017944A (en) * | 2019-12-31 | 2020-04-17 | 濮阳宏业环保新材料股份有限公司 | Grinding and bleaching process for water-milled kaolin |
| CN111422879A (en) * | 2020-04-10 | 2020-07-17 | 深圳市宏途建筑有限公司 | Low-grade kaolin multistep iron-removing and whitening method |
| CN111410204A (en) * | 2020-05-08 | 2020-07-14 | 鑫中科贸易(深圳)有限公司 | Method for preparing high-grade kaolin from sludge soil |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106276936B (en) | 2019-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106276936A (en) | A kind of remove the method for ferrum in Kaolin | |
| CN1325391C (en) | Method of producing poly aluminium iron silicate composite flocculating agent using fly ash and ferrous sulphate | |
| CN103755075B (en) | Technical method for treating silicon carbide acidic wastewater | |
| CN104973605B (en) | Crude product matter method for purifying diatomite | |
| CN105129946B (en) | A kind of efficient coal washing water treating agent | |
| CL2023001937A1 (en) | Method of treating carbonate-hosted lithium clay | |
| CN108862517B (en) | Process for co-producing heavy metal treatment coagulant by using phosphogypsum and red mud to prepare acid | |
| CN111039466A (en) | High-efficiency industrial wastewater treatment method | |
| CN105001381B (en) | A kind of preparation method of paper mill sludge base Amphiphatic high polymer coagulant | |
| CN103663659A (en) | Composite flocculant and preparation method thereof | |
| CN106311719A (en) | Recycling method for carbide slag | |
| CN107935016A (en) | A kind of method that liquid containing ammonium sulfate waste water prepares alpha semi-hydrated gypsum | |
| CN102936057A (en) | Industrial sewage treating agent | |
| CN106699919B (en) | A kind of double calcium calcification extractions of seaweed chemical alginic glue and waste water circulation reusing technology | |
| US2204812A (en) | Composition of matter and method of using same | |
| CN104085968B (en) | A kind of flocculant and preparation method thereof | |
| CN105502728B (en) | A kind of processing method for the high temperature highly salt containing organic waste water that oilfield sewage softening produces | |
| CN112939168A (en) | Coagulant for printing and dyeing wastewater and preparation method thereof | |
| CN100579925C (en) | Method for preparing amphiprotic sludge dehydrant | |
| CN112320880A (en) | Application of natural zeolite in treatment of printing ink wastewater | |
| CN106317251B (en) | A kind of seaweed chemical environmental protection Calcific technology | |
| CN106395844A (en) | Method for recovering boron and magnesium from calcium magnesium dreg in boron-containing brine | |
| CN108726593A (en) | A kind of production technology for the clear ginger wastewater purificant being based primarily upon COD and SS | |
| CN105883991A (en) | Method for preparing polyaluminium ferric sulfate water purifier by utilization of flyash | |
| CN109824110A (en) | A kind of preparation method of heavy metal containing sewage adsorbent material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 457400 East Road, 600m north of the intersection of national highway 106 and Minsheng Road, Nanle County, Puyang City, Henan Province Patentee after: Puyang Shengkai environmental protection new material technology Co.,Ltd. Address before: 457400 north of Minsheng Road, Nanle County, Puyang City, Henan Province Patentee before: PUYANG HONGYE ENVIRONMENTAL PROTECTION NEW MATERIAL Co.,Ltd. |