CN110028045A - Utilize the method for calcium metaborate concentration titanium white waste acid - Google Patents
Utilize the method for calcium metaborate concentration titanium white waste acid Download PDFInfo
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- CN110028045A CN110028045A CN201910334849.5A CN201910334849A CN110028045A CN 110028045 A CN110028045 A CN 110028045A CN 201910334849 A CN201910334849 A CN 201910334849A CN 110028045 A CN110028045 A CN 110028045A
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- Prior art keywords
- titanium white
- waste acid
- white waste
- concentration
- calcium metaborate
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/88—Concentration of sulfuric acid
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention discloses a kind of methods using calcium metaborate concentration titanium white waste acid, belong to chemical field, the following steps are included: titanium white waste acid and calcium metaborate are respectively placed in same closed container, the sulfuric acid for being 50~55% to get mass percentage concentration after the completion of to be concentrated.The method of the present invention completely avoids the use of boiler and evaporator, avoid the use of expensive resistant material, to reduce production cost, and operation it is at normal temperature or slightly hot under conditions of carry out, operating condition is significantly improved in this way, but also the economy of titanium white waste acid concentration is improved.
Description
Technical field
The invention belongs to chemical fields, and in particular to a method of titanium white waste acid is concentrated using calcium metaborate.
Background technique
Titanium White Production By Sulfuric Acid Process will generate Waste Sulfuric Acid (abbreviation titanium white waste acid) and the green vitriol containing 7 crystallizations water
(FeSO4·7H2O), when using ilmenite concentrate, (main component is metatitanic acid iron FeTiO3, wherein TiO2Content be 45-50wt%) be
When raw material, 1 ton of titanium dioxide is generally produced by seven inkstone of output 3.5-4 ton, while generating 7~8 tons and containing 17~20% sulfuric acid
Titanium white waste acid.
Due to too big using the waste sulfuric acid solution quantum of output of method for producing gtitanium dioxide with sulphuric acid by-product, and contain a certain amount of sulphur
It is sour ferrous, so that this waste sulfuric acid solution can not be utilized in other fields using dilute sulfuric acid.Lime is generallyd use at present
In stone and generate calcium sulfate method titanium white waste acid is handled, however, obtained calcium sulfate there is no utility value and can only
Stockpiling, this does not utilize raw material not only well, but also biggish pressure can be caused to environment.Positive method is first to lead to
When crossing preliminary evaporation and concentration and improving the mass percentage concentration of sulfuric acid to 30%~40%, ferrous sulfate is isolated；Further
Evaporation and concentration becomes 50% or more sulfuric acid, returns to acidolysis operation, uses for continuous acidolysis, to completely be utilized.But
It is that the corrosivity of sulfuric acid solution at high temperature is extremely strong, it is desirable that be worth higher graphite material, while being concentrated by evaporation and needing large capacity
Steam boiler so that the equipment investment of this method is high and production cost is also high.
Summary of the invention
The technical problem to be solved by the present invention is to it is existing concentration titanium white waste acid method it is big to equipment corrosion, it is at high cost.
The technical solution of present invention solution above-mentioned technical problem are as follows: provide a kind of utilization calcium metaborate concentration titanium white waste acid
Method, comprising the following steps: titanium white waste acid and calcium metaborate are respectively placed in same closed container, after the completion of to be concentrated,
The sulfuric acid for being 50~55% up to mass percentage concentration.
Wherein, the above-mentioned method using calcium metaborate concentration titanium white waste acid, the quality percentage of sulfuric acid in the titanium white waste acid
Concentration is 17~20%.
Wherein, it is above-mentioned using calcium metaborate concentration titanium white waste acid method, the calcium metaborate be two water calcium metaborates or
Four water calcium metaborates.
Wherein, the above-mentioned method using calcium metaborate concentration titanium white waste acid, the quality of the titanium white waste acid and calcium metaborate
Than for 1:1.35~6.
Wherein, the above-mentioned method using calcium metaborate concentration titanium white waste acid, the quality of the titanium white waste acid and calcium metaborate
Than for 1:1.35~3.
Wherein, the above-mentioned method using calcium metaborate concentration titanium white waste acid, the temperature of the concentration are 10~38 DEG C.
Wherein, the above-mentioned method using calcium metaborate concentration titanium white waste acid, the time of the concentration are 3~7 days.
Compared with prior art, the beneficial effects of the present invention are:
The method of the present invention completely avoids the use of boiler and evaporator, avoids the use of expensive resistant material,
To reduce production cost, and operate it is at normal temperature or slightly hot under conditions of carry out, significantly improve work in this way
Condition, but also the economy of titanium white waste acid concentration is improved.
The raw material calcium metaborate that the present invention uses can recycle, and greatly reduce the cost of raw material.
Specific embodiment
Specifically, a kind of method using calcium metaborate concentration titanium white waste acid, comprising the following steps: by titanium white waste acid and partially
Line borate is respectively placed in same closed container, the sulfuric acid for being 50~55% to get mass percentage concentration after the completion of to be concentrated.
The mass percentage concentration of sulfuric acid is 17~20% in titanium white waste acid used in the method for the present invention.
In method of the invention, in the method for the present invention, calcium metaborate selection has hygroscopic two water calcium metaborate or four
The better two water calcium metaborate of water calcium metaborate, preferably hygroscopicity.
In the method for the present invention, the dosage of calcium metaborate and the time of concentration are to be mutually related: the dosage of calcium metaborate is more,
Then concentration time is short, and the dosage of calcium metaborate is few, then the time being concentrated is short.
A specific embodiment of the invention is further described below with reference to embodiment, is not therefore limited the present invention
System is among the embodiment described range.
Embodiment 1
By 100 grams of this Waste Sulfuric Acids, wherein the ferrous sulfate of sulfuric acid and 2~3wt% containing 20wt%.With 135 gram of two water
Calcium metaborate (CaB2O4·2H2O) be respectively placed in same closed container at normal temperature, (pay attention to two kinds of materials it is separated,
It cannot mix).Two kinds of materials are taken out after 7 days, liquid is the sulfuric acid of 50~55wt%, and solid is six water calcium metaborate (CaB2O4·
6H2O), the removing crystallization water is dried at 300~350 DEG C in solid phase, becomes two water calcium metaborate (CaB2O4·2H2O) returning makes
With.The sulfuric acid of 50~55wt% can return to acidolysis and use for continuous acidolysis.
Embodiment 2
By 100 grams of this Waste Sulfuric Acids, wherein the ferrous sulfate of sulfuric acid and 2~3wt% containing 20wt%.With 270 gram of two water
Calcium metaborate (CaB2O4·2H2O) be respectively placed in same closed container at normal temperature, (pay attention to two kinds of materials it is separated,
It cannot mix).Two kinds of materials are taken out after 3.5 days, liquid is the sulfuric acid of 50~55wt%, and solid is four water calcium metaborates
(CaB2O4·4H2O), the removing crystallization water is dried at 300~350 DEG C in solid phase, becomes two water calcium metaborate (CaB2O4·
2H2O it) returns and uses.The sulfuric acid of 50~55wt% can return to acidolysis and use for continuous acidolysis.
Embodiment 3
In order to improve two water calcium metaborate (CaB2O4·2H2O utilization rate) can use the mode of operation of " adverse current ".
By the finally obtained solid phase CaB of embodiment 22O4·4H2O continues to put respectively at normal temperature with 100 grams of new Waste Sulfuric Acids
It is placed in same closed container, (notice that two kinds of materials are separated, cannot mix).Two kinds of materials are taken out after 7 days, liquid is
The sulfuric acid of 50wt%, solid are six water calcium metaborate (CaB2O4·6H2O), removing crystallization is dried at 300~350 DEG C
Water becomes CaB2O4·2H2O, which is returned, to be used.
The sulfuric acid of 50wt% continues and CaB2O4·2H2O is respectively placed at normal temperature in same closed container, (is paid attention to
Two kinds of materials are separated, cannot mix).Two kinds of materials are taken out after 3.5 days, liquid is the sulfuric acid of 55wt%, returns to acidolysis and supplies
Continuous acidolysis uses；Solid phase calcium metaborate still has the space of water suction, continues to act on new Waste Sulfuric Acid, until it is saturated and becomes
CaB2O4·6H2O is dried the removing crystallization water at 300~350 DEG C, becomes CaB2O4·2H2O, which is returned, to be used；Liquid phase continues
With new CaB2O4·2H2O effect, until liquid concentration reaches 55wt% and stops.
Claims (7)
1. utilizing the method for calcium metaborate concentration titanium white waste acid, which comprises the following steps: by titanium white waste acid and inclined boron
Sour calcium is respectively placed in same closed container, the sulfuric acid for being 50~55% to get mass percentage concentration after the completion of to be concentrated.
2. utilizing the method for calcium metaborate concentration titanium white waste acid according to claim 1, it is characterised in that: the titanium white waste acid
The mass percentage concentration of middle sulfuric acid is 17~20%.
3. utilizing the method for calcium metaborate concentration titanium white waste acid according to claim 1, it is characterised in that: the calcium metaborate
For two water calcium metaborates or four water calcium metaborates.
4. utilizing the method for calcium metaborate concentration titanium white waste acid according to claim 1, it is characterised in that: the titanium white waste acid
Mass ratio with calcium metaborate is 1:1.35~6.
5. utilizing the method for calcium metaborate concentration titanium white waste acid according to claim 4, it is characterised in that: the titanium white waste acid
Mass ratio with calcium metaborate is 1:1.35~3.
6. utilizing the method for calcium metaborate concentration titanium white waste acid according to claim 1, it is characterised in that: the temperature of the concentration
Degree is 10~38 DEG C.
7. according to claim 1 using calcium metaborate concentration titanium white waste acid method, it is characterised in that: the concentration when
Between be 3~7 days.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910334849.5A CN110028045A (en) | 2019-04-24 | 2019-04-24 | Utilize the method for calcium metaborate concentration titanium white waste acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910334849.5A CN110028045A (en) | 2019-04-24 | 2019-04-24 | Utilize the method for calcium metaborate concentration titanium white waste acid |
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| CN110028045A true CN110028045A (en) | 2019-07-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201910334849.5A Withdrawn CN110028045A (en) | 2019-04-24 | 2019-04-24 | Utilize the method for calcium metaborate concentration titanium white waste acid |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101525187A (en) * | 2009-03-24 | 2009-09-09 | 四川大学 | Method for concentrating titanium pigment waste acid |
| CN101538023A (en) * | 2008-03-22 | 2009-09-23 | 四川大学 | Processing method for titanium pigment waste acid |
| CN102910594A (en) * | 2012-11-06 | 2013-02-06 | 黄正源 | Method for concentrating waste sulfuric acid by utilizing waste heat of titanium dioxide calcinator |
-
2019
- 2019-04-24 CN CN201910334849.5A patent/CN110028045A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538023A (en) * | 2008-03-22 | 2009-09-23 | 四川大学 | Processing method for titanium pigment waste acid |
| CN101525187A (en) * | 2009-03-24 | 2009-09-09 | 四川大学 | Method for concentrating titanium pigment waste acid |
| CN102910594A (en) * | 2012-11-06 | 2013-02-06 | 黄正源 | Method for concentrating waste sulfuric acid by utilizing waste heat of titanium dioxide calcinator |
Non-Patent Citations (1)
| Title |
|---|
| 朱洪法 等: "《无机化工产品手册》", 31 December 2008, 金盾出版社 * |
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Application publication date: 20190719 |