CN106365196A - Sedimentation method of acidolysis material titaniferous solution - Google Patents
Sedimentation method of acidolysis material titaniferous solution Download PDFInfo
- Publication number
- CN106365196A CN106365196A CN201610764165.5A CN201610764165A CN106365196A CN 106365196 A CN106365196 A CN 106365196A CN 201610764165 A CN201610764165 A CN 201610764165A CN 106365196 A CN106365196 A CN 106365196A
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- acidolysis
- flocculant
- titanium liquid
- sedimentation
- titanium
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/04—Oxides; Hydroxides
- C01G23/047—Titanium dioxide
- C01G23/053—Producing by wet processes, e.g. hydrolysing titanium salts
- C01G23/0532—Producing by wet processes, e.g. hydrolysing titanium salts by hydrolysing sulfate-containing salts
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The invention belongs to the technical field of mixed materials handing, and particularly relates to a sedimentation method of an acidolysis material titaniferous solution, and more particularly relates to a sedimentation method used in an acidolysis material containing sediment titanium ore without being completely reacted. In adopting a vitriol method to prepare titanium dioxide, a sedimentation process is carried out in the steps of adding a flocculating agent in a flocculating agent configuration groove, stirring the mixture after introducing steams into the groove at the same time; meanwhile, injecting acidolysis slurry from a acidolysis process into an acidolysis slurry head tank and conducting stir; injecting the acidolysis slurry and the flocculating agent into a continuous thickener after fully mixing the acidolysis slurry and the flocculating agent and conducting mixed sedimentation; injecting the obtained supernate into a pure titanium liquid storage tank so that the supernate can be further provided to a crystallization process.
Description
Technical field
The invention belongs to mixed material processing technology field is and in particular to a kind of acidolysis material titanium liquid sedimentation method, more really
It is the sedimentation method containing silt and the not titanium ore of reaction completely in a kind of material titanium liquid for acidolysis for cutting.
Background technology
The main application fields of titanium dioxide: coating, plastics, ink, papermaking, wherein coating account for 60%, plastics account for 20%, papermaking
Account for 14%, other (containing fields such as cosmetics, chemical fibre, electronics, pottery, enamel, welding rod, alloy, glass) accounts for 6%.
Titanium dioxide both as coloring agent, has reinforcement, anti-aging, filling effect in rubber industry again.White and color
Titanium dioxide is added in color rubber, under sun exposure, sun-resistant, do not ftracture, invariant color, percentage of elongation is big and acid and alkali-resistance.Rubber
Glue titanium dioxide, is mainly used in automobile tire and rubber overshoes, rubber floor covering, glove, sports equipment etc., with anatase titanium dioxide is typically
Main.But it is used for automobile tire volume of production, be commonly incorporated into a certain amount of rutile-type product, to strengthen ozone-resistant and uvioresistant energy
Power.
Titanium dioxide is applied also increasingly extensive in cosmetics.Because titanium dioxide is nontoxic, superior more than white lead, various XIANGFEN are several
White lead and zinc white is all replaced with titanium dioxide.The titanium dioxide of 5%-8% need only be added in XIANGFEN to can be obtained by permanent white, make
Spice is more satiny, has adhesive force, absorbing power and covering power.In pigment and cold cream, titanium dioxide can weaken greasy and transparent sense
Feel.Also titanium dioxide can be used in other various spice, sunscreen cream, soap flakes, white fancy soap and toothpaste.Cosmetics-stage titanium dioxide is divided into
Oiliness and aqueouss titanium dioxide.Due to its stable chemical nature, refractive index is high, opacity is high, covering power is high, whiteness is good and nothing
Poison, be widely used in cosmetic field, play effect of beautifying whitening.
It is simply that continuous remove impurity, a process for concentration in the black area production technology of Titanium White Production By Sulfuric Acid Process, and acidolysis titanium
Liquid settling efficiency is the critical process in the production technology of black area, and acidolysis titanium liquid is a more complicated system, wherein has three classes miscellaneous
Matter:
Solubility salt, the such as sulfate of the element such as ferrum, chromium, manganese, magnesium or phosphate；
Granule is made up of the compound of undecomposed ilmenite, rutile, stone-like pulse mud and carbon, lead, calcium etc. in more than 10um
Insoluble suspension residue；
Granularity is the tools such as the hydrated titanium dioxide of hydrated SiO 2, hydrated alumina and early stage hydrolysis generation of 0.1um ~ 10um
There is the colloid of high power stability.
It was verified that not removing these residues, colloid and being partly dissolved impurity, and direct hydrolysis are that quality can not to be obtained excellent
Different product.Purify quality and directly influence technology controlling and process and properties of product, such as hydrated titanium dioxide washing complexity,
The chemical purity of product, whiteness, reducing power, oil absorption, hardness etc..
Sedimentation is by mean of action of gravity, removes the insoluble impuritiess in titanium liquid and colloidal solid, by titanium liquid preliminary purification,
Impurity is removed by sedimentation, the quality of side-product ferrous sulfate can be improved and accelerate its rate of filtration, colloidal solid is such as simultaneously
Do not remove, become the nucleus for a kind of no definite composition and quantity during hydrolysis afterwards, hydrolytic process, hydrolyzate can be affected
The Nomenclature Composition and Structure of Complexes, washing complexity and end product quality.
Iron mine containing silt and not reaction completely in material titanium liquid after being terminated due to acidolysis, need to add after flocculant
Sedimentation post is settled, and these silts and the not mechanical admixture such as iron mine of reaction completely is settled down, clear liquid was carried out again
Filter is processed.If effect of settling is bad, filtration can be had a strong impact on, the rate of filtration is slow, and a class at least must clean twice
Filter cloth, lost of filter cloth is big, and meanwhile, in material during cleaning filter cloth, titanium liquid also has loss, and in filtrate, solid content is easily exceeded.
Traditional infall process is directly to configure on materail tube by the pipeline adding flocculant, that is, on the materail tube of titanium liquid
Directly configuration one flocculation pipe is so that titanium liquid carries out nature with the flocculant in flocculation pipe during the transfer pipeline to Sedimentation tank
Mix up.But due to Sedimentation tank material pipe short so that the effect that mixes up is undesirable, cause the sedimentation time long, ultimately result in
Effect of settling is undesirable.
Content of the invention
The goal of the invention of the present invention is: the problem existing for prior art, provides a kind of titanium dioxide that improves to prepare
The method of acidolysis titanium liquid settling efficiency in journey.
To achieve these goals, the technical solution used in the present invention is:
A kind of intermediate processing of acidolysis titanium liquid, in method for producing gtitanium dioxide with sulphuric acid, sedimentation operation is carried out by following operation:
(1) add flocculant in flocculant configured slot, be passed through steam-stirring simultaneously；
(2) meanwhile in acidolysis slip head tank, injection is derived from the acidolysis slip of hydrolysis procedure, and is stirred；
(3), after carrying acidolysis slurry and flocculant stirring fully, acidolysis slurry and flocculant are injected in continuous thickener, carry out
Mixing sedimentation；
(4) supernatant obtaining in step (3) is injected in clear titanium liquid storage tank, and is supplied to Crystallization Procedure further；
(5) the middle discharge opeing obtaining in step (3) is input to clear titanium liquid geosyncline, can inject through the clear titanium liquid that further precipitation obtains
To clear titanium liquid storage tank, or it is supplied directly to Crystallization Procedure, wherein remaining middle discharge opeing is transmitted back to acidolysis slip head tank；
(6) slurry transportation obtaining in step (3) is to thick paste geosyncline, and is passed through the fresh water (FW) of heating in thick paste geosyncline, then
It is transported to filter pressing operation.
Preferably, the flocculant of employing is polyacrylamide.
Preferably, acidolysis slip/flocculant is than 100/4-6 m3/m3.
Preferably, clear titanium fluid solid content is≤0.3 g/l.
Preferably, flocculant is Nore 8160.
The present invention also provides a kind of preparation method of titanium dioxide, and the method includes: titaniferous material is carried out at acidolysis successively
Reason, leaching process, reduction treatment, settlement treatment, hydrolysis process and calcination processing are it is characterised in that described settlement treatment is pressed
Carry out according to aforementioned methods described.
Thickener makes unreacted mineral powder granular, impurity in acidolysis slip using flocculant flocculation and action of gravity
Grain, colloidal impurity etc. are deposited to thickener bottom, realize solid-liquid layering.Upper strata clear titanium liquid flows into clear from thickener top overfall
Titanium liquid storage tank, bottom mud puts into mud geosyncline from thickener lower end mud drain hole.
Flocculant polyacrylamide used by the present invention, it is a kind of organic polymer coargulator, can be Celsius in 60-70
Degree, play preferable flocculating effect under strong acid environment and non-degradable, be dispersed with substantial amounts of polar group, ammonia atom have larger
Cloud density, has stronger affinity to particle.
In sum, due to employing technique scheme, the invention has the beneficial effects as follows:
1st, adopt continuous sedimentation process to substitute traditional batch settling technique, improve settling efficiency, reduce floor space；
2nd, this project scientific achievement has successfully realized conversion, the expected economic benefit of acquirement:
1) liaison settling efficiency improves 20%, is improved by original bottleneck operation, production capacity rises to 12 from 100,000 tons/year
Ten thousand tons/year, according to producing 700 yuan/ton of calculating of titanium dioxide amortization charge per ton, then year creating benefit is: (120,000/year -10 ten thousand/
Year) ton * 700 yuan/ton=14,000,000 yuan/year.
2) it is 42500 yuan/ton according to current import Kemira's flocculant unit price, and domestic Shandong region Nore flocculant is
32000 yuan/ton, produce 10.5 ten thousand tons of titanium dioxides per year according to current, flocculant unit consumption calculates according to 0.26kg/t titanium dioxide, then year wound
Making benefit is: 120,000 * 0.26/1000*(42500-32000)=32.76 ten thousand yuan.
Total total benefit is: 14,000,000+32.76 ten thousand=1432.76 ten thousand yuan.
Brief description
Fig. 1 is the process chart of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only in order to explain the present invention, not
For limiting the present invention.
Embodiment 1
In method for producing gtitanium dioxide with sulphuric acid, sedimentation operation is carried out by following operation:
(1) add flocculant in flocculant configured slot, be passed through steam-stirring simultaneously；
(2) meanwhile in acidolysis slip head tank, injection is derived from the acidolysis slip of hydrolysis procedure, and is stirred；
(3), after carrying acidolysis slurry and flocculant stirring fully, acidolysis slurry and flocculant are injected in continuous thickener, carry out
Mixing sedimentation；
(4) supernatant obtaining in step (3) is injected in clear titanium liquid storage tank, and is supplied to Crystallization Procedure further；
(5) the middle discharge opeing obtaining in step (3) is input to clear titanium liquid geosyncline, can inject through the clear titanium liquid that further precipitation obtains
To clear titanium liquid storage tank, or it is supplied directly to Crystallization Procedure, wherein remaining middle discharge opeing is transmitted back to acidolysis slip head tank；
(6) slurry transportation obtaining in step (3) is to thick paste geosyncline, and is passed through the fresh water (FW) of heating in thick paste geosyncline, then
It is transported to filter pressing operation.
Using flocculant be Shandong region Nore Nore 8160 flocculant,
Acidolysis slip/flocculant is than 100/5 m3/m3,
Clear titanium fluid solid content is≤0.3 g/l.
According to preamble operation, continuous sampling three days, the solid content of test titanium clear liquid, result is as shown in table 1 below:
Can be seen that clear titanium fluid solid content index normally from above experimental data, typical mean solids content is 0.052g/ l, meet clear
Titanium liquid technological requirement 0.15g/l, and than clear titanium liquid typical mean solids content 0.105g/ after the Kemira's flocculant sedimentation using import
Good many of l.
The technical scheme above embodiment of the present invention being provided is described in detail, and specific case used herein is to this
The principle of inventive embodiments and embodiment are set forth, and the explanation of above example is only applicable to help and understands the present invention
The principle of embodiment；Simultaneously for one of ordinary skill in the art, according to the embodiment of the present invention, specific embodiment with
And all will change in range of application, in sum, this specification content should not be construed as limitation of the present invention.With
Upper described be only presently preferred embodiments of the present invention, not in order to limit the present invention, all the spirit and principles in the present invention it
Interior made any modification, equivalent and improvement etc., should be included within the scope of the present invention.
Claims (6)
1. a kind of intermediate processing of acidolysis titanium liquid it is characterised in that: in method for producing gtitanium dioxide with sulphuric acid, sedimentation operation presses following behaviour
Work is carried out:
(1) add flocculant in flocculant configured slot, be passed through steam-stirring simultaneously；
(2) meanwhile in acidolysis slip head tank, injection is derived from the acidolysis slip of hydrolysis procedure, and is stirred；
(3), after carrying acidolysis slurry and flocculant stirring fully, acidolysis slurry and flocculant are injected in continuous thickener, carry out
Mixing sedimentation；
(4) supernatant obtaining in step (3) is injected in clear titanium liquid storage tank, and is supplied to Crystallization Procedure further；
(5) the middle discharge opeing obtaining in step (3) is input to clear titanium liquid geosyncline, can inject through the clear titanium liquid that further precipitation obtains
To clear titanium liquid storage tank, or it is supplied directly to Crystallization Procedure, wherein remaining middle discharge opeing is transmitted back to acidolysis slip head tank；
(6) slurry transportation obtaining in step (3) is to thick paste geosyncline, and is passed through the fresh water (FW) of heating in thick paste geosyncline, then
It is transported to filter pressing operation.
2. the intermediate processing of acidolysis titanium liquid as claimed in claim 1 is it is characterised in that the flocculant adopting is polyacrylamide.
3. the intermediate processing of acidolysis titanium liquid as claimed in claim 1 or 2 is it is characterised in that acidolysis slip/flocculant compares 100/
4-6 m3/m3.
4. the acidolysis titanium liquid as described in any one of claim 1-3 intermediate processing it is characterised in that clear titanium fluid solid content be≤
0.3 g/l.
5. the intermediate processing of the acidolysis titanium liquid as described in any one of claim 1-4 is it is characterised in that flocculant is Nore 8160.
6. a kind of preparation method of titanium dioxide, the method includes: titaniferous material is carried out successively acidolysis process, leaching is processed, also
Original place reason, settlement treatment, hydrolysis process and calcination processing are it is characterised in that described settlement treatment is appointed according to claim 1-5
One methods described is carried out.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610764165.5A CN106365196B (en) | 2016-08-30 | 2016-08-30 | A kind of acidolysis material titanium liquid sedimentation method |
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| CN201610764165.5A CN106365196B (en) | 2016-08-30 | 2016-08-30 | A kind of acidolysis material titanium liquid sedimentation method |
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| CN106365196B CN106365196B (en) | 2019-02-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107055604A (en) * | 2017-06-07 | 2017-08-18 | 重庆鹏越科技发展有限公司 | A kind of continuous purification system and method for black titanium liquid |
| CN107963704A (en) * | 2017-12-19 | 2018-04-27 | 攀枝花中达钛业科技有限公司 | The polynary flocculating setting agent of rich-titanium material acidolysis titanium liquid and its preparation, application method |
| CN113582223A (en) * | 2021-08-17 | 2021-11-02 | 沈瑞强 | Inorganic chemical pigment color improvement process and equipment |
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| CN102233201A (en) * | 2010-04-23 | 2011-11-09 | 北京化工大学 | Chemical flocculation precipitation separation of polyacrylamide on acid-insoluble residues in production of nitrophosphate fertilizer |
| CN104229877A (en) * | 2013-06-24 | 2014-12-24 | 凌敬平 | Method for preparing titanium dioxide powder |
| CN104722395A (en) * | 2015-02-13 | 2015-06-24 | 湖北鑫鹰环保科技股份有限公司 | Mixed flocculating agent capable of accelerating settling of superfine grain tailing flocculation and application thereof |
-
2016
- 2016-08-30 CN CN201610764165.5A patent/CN106365196B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102233201A (en) * | 2010-04-23 | 2011-11-09 | 北京化工大学 | Chemical flocculation precipitation separation of polyacrylamide on acid-insoluble residues in production of nitrophosphate fertilizer |
| CN104229877A (en) * | 2013-06-24 | 2014-12-24 | 凌敬平 | Method for preparing titanium dioxide powder |
| CN104722395A (en) * | 2015-02-13 | 2015-06-24 | 湖北鑫鹰环保科技股份有限公司 | Mixed flocculating agent capable of accelerating settling of superfine grain tailing flocculation and application thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107055604A (en) * | 2017-06-07 | 2017-08-18 | 重庆鹏越科技发展有限公司 | A kind of continuous purification system and method for black titanium liquid |
| CN107963704A (en) * | 2017-12-19 | 2018-04-27 | 攀枝花中达钛业科技有限公司 | The polynary flocculating setting agent of rich-titanium material acidolysis titanium liquid and its preparation, application method |
| CN107963704B (en) * | 2017-12-19 | 2021-05-25 | 攀枝花中达钛业科技有限公司 | Multi-element flocculation settling agent for titanium-rich material acidolysis titanium liquid and preparation and use methods thereof |
| CN113582223A (en) * | 2021-08-17 | 2021-11-02 | 沈瑞强 | Inorganic chemical pigment color improvement process and equipment |
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| CN106365196B (en) | 2019-02-15 |
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Address after: 441500 No.1 Bianhe Road, Chengguan Town, Nanzhang County, Xiangyang City, Hubei Province Patentee after: Longbai Xiangyang Titanium Industry Co.,Ltd. Address before: 441500 No. 1, Bianhe Road, Chengguan Town, Nanzhang County, Xiangfan City, Hubei Province Patentee before: XIANGYANG LOMON TITANIUM INDUSTRY Co.,Ltd. |