CN103834989B - The technique that chloride waste water of chloride process titanium dioxide produces calcium sulfate crystal whiskers - Google Patents
The technique that chloride waste water of chloride process titanium dioxide produces calcium sulfate crystal whiskers Download PDFInfo
- Publication number
- CN103834989B CN103834989B CN201410061397.5A CN201410061397A CN103834989B CN 103834989 B CN103834989 B CN 103834989B CN 201410061397 A CN201410061397 A CN 201410061397A CN 103834989 B CN103834989 B CN 103834989B
- Authority
- CN
- China
- Prior art keywords
- chloride
- waste water
- calcium sulfate
- titanium dioxide
- content
- 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.)
- Active
Links
Landscapes
- Crystals, And After-Treatments Of Crystals (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Chloride waste water of a kind of chloride process titanium dioxide produces the technique of calcium sulfate crystal whiskers, by the waste water of the waste water of chloride for chloride process titanium dioxide and sulfur acid sodium respectively through collections, supernatant, purify, filter after, mixing is reacted, stirring, heats, adds sulfur acid for adjusting pH value；It is simultaneously introduced magnesium chloride and makees growth regulator, be put in crystallizer and be aged, crystallize and obtain calcium sulphate crystal, filter, add H2SO4Middle buffering is heated to boiling, and heat filtering is also washed with deionized simultaneously, obtains calcium sulfate crystal whiskers, sends into drying and dewatering in fluidized bed dryer, and packaging i.e. obtains anhydrous calcium sulfate whisker.Technique is simple, with low cost, it is possible to achieve industrialized production, accomplishes wastewater utilization.
Description
Technical field
The present invention relates to chloride waste water of a kind of chloride process titanium dioxide and produce the technique of calcium sulfate crystal whiskers, produce calcium sulfate crystal whiskers particularly to chloride waste water of a kind of chloride process titanium dioxide and reclaim the joint production process of industrial chlorinations sodium simultaneously.
Background technology
Calcium sulfate crystal whiskers has excellent mechanical property, the good compatibility, excellent flatness, feature that regenerability is good, be mainly used in papermaking, composite increase constituent element, friction material, environmental project filter, asphalt modification and improving in coating and the adhesive force of paint, temperature tolerance and insulating properties.At present, the production method of calcium sulfate crystal whiskers is with Gypsum Fibrosum as raw material, is grown with single crystal form by manual control, has threadiness (palpus shape) monocrystal of uniform cross section, complete profile, perfect internal structure.
Chloride process titanium dioxide is the most state-of-the-art titanium white production technology, and chloride process titanium dioxide product specification is high, the three wastes are few, environmentally friendly, is the domestic titanium white production technology encouraging development.But in chloride process titanium dioxide production process, produced titanium tetrachloride output chloride slag by rich-titanium material, mainly contain FeCl2、FeCl3、AlCl3、CaCl2、MnCl2Deng chloride, need to carry out harmless treatment.Generally when harmless treatment by dissolved for chloride slag water, adding Calx and be neutralized to alkalescence, filter pressing, its filtering residue composition is Fe (OH)3、Mn(OH)2、Mg(OH)2、Al(OH)3Deng industrial waste, it is dumped in slag field or makees cement raw material.Its alkaline filtrate mainly contains CaCl2, the soluble chloride such as NaCl.The waste water external chloride process titanium dioxide Enterprise Construction of this high chlorine root is directly discharged in sea water by the sea or domestic injection zone industrial wastewater and municipal sewage process through double purification and make Cl-Qualified discharge；Have even dissolved for chloride slag acid water liquid caustic soda is neutralized, after solid-liquid separation, filtrate evaporative crystallization reclaims chlorine root with the form of sodium chloride.But the Technology of the chlorine root in this removal waste water is feasible, but lacks economy and be difficult to carry out.Du pont company works out a kind of that chloride slag is dissolved, and acid washing slag water does not neutralize and is directly filled into the treatment technology that 2000m underground has in the lithosphere of enclosed construction, is the most gradually denied by locality.So far the treatment technology that chloride waste water of chloride process titanium dioxide does not has economically feasible, has an economic benefit.
Summary of the invention
The technical problem to be solved in the present invention is to provide that a kind of technique is simple, with low cost, has an economic benefit, environmentally friendly, can chloride waste water of chloride process titanium dioxide of industrialized production technique of producing calcium sulfate crystal whiskers.
The technical solution of the present invention is:
Chloride waste water of a kind of chloride process titanium dioxide produces the technique of calcium sulfate crystal whiskers, and it specifically comprises the following steps that
1., by the waste water of chloride for chloride process titanium dioxide through collection, supernatant, purify, filter after, make Ca in waste water2+Content >=50g/L, Cl-The content≤20ppm, Pb of content >=100g/L, Σ Fe2+、Bi3+、Cd2+Content≤5ppm, store for future use；
2., by the waste water of sulfur acid sodium through collection, supernatant, purify, filter after, make SO in waste water4 2-The content≤20ppm, Cr of content >=50g/L, Σ Fe6+Content≤5ppm, store for future use；Or it is configured to SO with Matrii Sulfas Exsiccatus4 2-Concentration is the solution for standby of 50g/L～200g/L；
3., Ca in the solution 1. obtained according to step2+2. SO in the solution obtained with step4 2-1. step is reacted by mol ratio 1:1～1:1.5 with the mixing of step 2. solution, and stirring is heated to 60 DEG C～100 DEG C, adds sulphuric acid and regulate to pH=2～5；Being simultaneously introduced magnesium chloride and make growth regulator, the addition of described magnesium chloride is the 3% of product calcium sulfate theoretical weight, and the response time is 20min～60min；
4., it is put in crystallizer and is aged, crystallizes 4h～6h, obtain calcium sulphate crystal；
5., by calcium sulphate crystal carrying out vacuum filtration or centrifugal filtration, calcium sulphate crystal is collected in a reservoir and adds the H of concentration 1mol/L2SO4In dash-control pH be 2～5 be heated to boiling, heat filtering is also washed with deionized simultaneously, and the consumption of described deionized water is calcium sulphate crystal weight 1 times～5 times, is filtrated to get calcium sulfate crystal whiskers；
6., by whisker sending in fluidized bed dryer at 60 DEG C～200 DEG C, drying and dewatering, packaging i.e. obtains anhydrous calcium sulfate whisker；
7., the acid mother liquid that obtains after 5. filtering of step add NaOH and be neutralized to pH=6.5～7, add salting-out agents magnesium chloride and carry out the evaporative crystallization industry NaCl that saltouts, the addition of described salting-out agents magnesium chloride accounts for the 20%～40% of acid mother liquid quality；
8., 7. the middle aqueous mother liquor return step of the step 7. magnesium chloride containing that middle crystallization industry NaCl obtains proceeds the evaporative crystallization industry NaCl that saltouts, SO in middle aqueous mother liquor4 2-Enriching quantity >=50g/L time, return step and 3. replace the sodium sulfate in part steps 2. solution and growth regulator magnesium chloride, circulate extracting sulfuric acid calcium crystal.
The waste water of described sulfur acid sodium contains Na for producing vanadic anhydride2SO4Waste water, or with produce sodium dichromate side-product Natrii Sulfas, or produce hypo contain Na2SO4Waste liquid through treatment and purification substitute.
The acid mother liquid that step obtains after 5. filtering can also return step 3. for replacing sulfuric acid regulation solution pH value.
The waste water that described chloride process titanium dioxide is chloride is the waste water that chloride process titanium dioxide contains that calcium chloride is main component.
Beneficial effects of the present invention:
Technique is simple, with low cost, utilizes the waste water of chloride process titanium dioxide chloride containing calcium and produces the waste water of vanadic anhydride sulfur acid sodium, producing the sodium sulfate whisker with economic benefit；Being neutralized by calcium sulfate crystal whiskers crystallinic acid aqueous mother liquor alkali, saltout evaporative crystallization industry NaCl, it is achieved closed cycle；Can realize industrialized production, accomplish wastewater utilization, resource recycles valuable constituent.Solve the difficult problem that chloride waste water of chloride process titanium dioxide processes, improve chloride process titanium dioxide level of clean production further, with more environment-friendly.
Accompanying drawing explanation
Fig. 1 is the process chart of the present invention.
Detailed description of the invention
Embodiment 1
1., by the waste water (predominantly calcium chloride, sodium chloride) of chloride process titanium dioxide chloride containing calcium through collection, supernatant, purify, filter after, make Ca in waste water2+Content >=50g/L, Cl-The content≤20ppm, Pb of content >=100g/L, Σ Fe2+、Bi3+、Cd2+Content≤5ppm, store for future use；
2., production vanadic anhydride is contained Na2SO4Waste water through collection, supernatant, purify, filter after, make SO in waste water4 2-The content≤20ppm, Cr of content >=50g/L, Σ Fe6+Content≤5ppm, store for future use；
3., Ca in the solution 1. obtained according to step2+2. SO in the solution obtained with step4 2-1. step is reacted by mol ratio 1:1.5 with the mixing of step 2. solution, and stirring is heated to 80 DEG C, adds sulphuric acid and regulates to pH=4；Being simultaneously introduced magnesium chloride and make growth regulator, the addition of described magnesium chloride is the 3% of product calcium sulfate theoretical weight, and the response time is 30min；
4., it is put in crystallizer and is aged, crystallizes 5h, obtain calcium sulphate crystal；
5., by calcium sulphate crystal carrying out vacuum filtration or centrifugal filtration, calcium sulphate crystal is collected in a reservoir and adds the H of concentration 1mol/L2SO4In dash-control pH be 4 be heated to boiling, heat filtering is also washed with deionized simultaneously, and the consumption of described deionized water is calcium sulphate crystal weight 4 times, is filtrated to get calcium sulfate crystal whiskers；
6., by whisker sending in fluidized bed dryer at 60 DEG C, drying and dewatering, packaging i.e. obtains anhydrous calcium sulfate whisker；After testing, the draw ratio 10～200, CaSO of anhydrous calcium sulfate whisker4Content >=98%, whiteness >=98%, loose thickness is≤0.6g/cm3；
7., the mother solution that obtains after 5. filtering of step add NaOH and be neutralized to pH=6.5, addition accounts for the salting-out agents magnesium chloride of acid mother liquid quality 30% and carries out the evaporative crystallization industry NaCl that saltouts；
8., 7. the middle aqueous mother liquor return step of step 7. middle crystallization industry NaCl magnesium chloride containing proceeds the evaporative crystallization industry NaCl that saltouts.SO in central aqueous mother liquor4 2-Enriching quantity >=50g/L time, return step and 3. replace solution and the growth regulator magnesium chloride extracting sulfuric acid calcium crystal that 2. part steps obtain.
Embodiment 2
1., by the waste water (predominantly calcium chloride, sodium chloride) of chloride process titanium dioxide chloride containing calcium through collection, supernatant, purify, filter after, make Ca in waste water2+Content >=50g/L, Cl-The content≤20ppm, Pb of content >=100g/L, Σ Fe2+、Bi3+、Cd2+Content≤5ppm, store for future use；
2., the side-product Natrii Sulfas producing sodium dichromate is dissolved in vanadium pentoxide wastewater, supernatant, purification, Cr6+After reduction generates chromic oxide gel filtration, make SO in waste water4 2-The content≤20ppm, Cr of content >=100g/L, Σ Fe6+Content≤5ppm, store for future use；
3., Ca in the solution 1. obtained according to step2+2. SO in the solution obtained with step4 2-1. step is reacted by mol ratio 1:1.15 with the mixing of step 2. solution, and stirring is heated to 60 DEG C, adds sulphuric acid and regulates to pH=2；Being simultaneously introduced magnesium chloride and make growth regulator, the addition of described magnesium chloride is the 3% of product calcium sulfate theoretical weight, and the response time is 20min；
4., it is put in crystallizer and is aged, crystallizes 4h, obtain calcium sulphate crystal；
5., by calcium sulphate crystal carrying out vacuum filtration or centrifugal filtration, calcium sulphate crystal is collected in a reservoir and adds the H of concentration 1mol/L2SO4In dash-control pH be 2 be heated to boiling, heat filtering is also washed with deionized simultaneously, and the consumption of described deionized water is calcium sulphate crystal weight 1 times, is filtrated to get calcium sulfate crystal whiskers；
6., by whisker sending at 200 DEG C in fluidized bed dryer, drying and dewatering, packaging i.e. obtains anhydrous calcium sulfate whisker；
7., the mother solution that obtains after 5. filtering of step add NaOH and be neutralized to pH=7, addition accounts for the salting-out agents magnesium chloride of acid mother liquid quality 40% and carries out the evaporative crystallization industry NaCl that saltouts；After testing, the draw ratio 10～200, CaSO of anhydrous calcium sulfate whisker4Content >=98%, whiteness >=98%, loose thickness is≤0.5g/cm3；
8., 7. the middle aqueous mother liquor return step of step 7. middle crystallization industry NaCl magnesium chloride containing proceeds the evaporative crystallization industry NaCl that saltouts, SO in middle aqueous mother liquor4 2-Enriching quantity >=50g/L time, return solution and growth regulator magnesium chloride extracting sulfuric acid calcium crystal that 3. step replaces part 2. to obtain containing step.
Embodiment 3
1., by the waste water (predominantly calcium chloride, sodium chloride) of chloride process titanium dioxide chloride containing calcium through collection, supernatant, purify, filter after, make Ca in waste water2+Content >=50g/L, Cl-The content≤20ppm, Pb of content >=100g/L, Σ Fe2+、Bi3+、Cd2+Content≤5ppm, store for future use；
2., the sedimentation underflow waste liquid producing hypo is contained main amount Na2SO4, remaining Na2S2O3、Na2SO3, first by S2O3 -2、SO3 -2It is oxidized to SO4 2-After, through collection, supernatant, purify, filter after, make SO in waste water4 2-The content≤20ppm, Cr of content >=200g/L, Σ Fe6+Content≤5ppm, store for future use；
3., Ca in the solution 1. obtained according to step2+2. SO in the solution obtained with step4 2-1. step is reacted by mol ratio 1:1.25 with the mixing of step 2. solution, and stirring is heated to 100 DEG C, adds sulphuric acid and regulates to pH=5；Being simultaneously introduced magnesium chloride and make growth regulator, the addition of described magnesium chloride is the 3% of product calcium sulfate theoretical weight, and the response time is 60min；
4., it is put in crystallizer and is aged, crystallizes 5h, obtain calcium sulphate crystal；
5., by calcium sulphate crystal carrying out vacuum filtration or centrifugal filtration, calcium sulphate crystal is collected in a reservoir and adds concentration 1mol/L
H2SO4In dash-control pH be 5 be heated to boiling, heat filtering is also washed with deionized simultaneously, and the consumption of described deionized water is calcium sulphate crystal weight 3 times, is filtrated to get calcium sulfate crystal whiskers；
6., by whisker sending in fluidized bed dryer at 200 DEG C, drying and dewatering, packaging i.e. obtains anhydrous calcium sulfate whisker；
7., the mother solution that obtains after 5. filtering of step add NaOH and be neutralized to pH=7, addition accounts for the salting-out agents magnesium chloride of acid mother liquid quality 30% and carries out the evaporative crystallization industry NaCl that saltouts；After testing, the draw ratio 10～200, CaSO of anhydrous calcium sulfate whisker4Content >=98%, whiteness >=98%, loose thickness is≤0.5g/cm3；
8., during step 7. middle crystallization industry NaCl, 7. the middle aqueous mother liquor return step of magnesium chloride containing proceeds the evaporative crystallization industry NaCl that saltouts；SO in middle aqueous mother liquor4 2-Enriching quantity >=50g/L time, return solution and growth regulator magnesium chloride extracting sulfuric acid calcium crystal that 3. step replaces part 2. to obtain containing step.
Embodiment 4
1., by the waste water (predominantly calcium chloride, sodium chloride) of chloride process titanium dioxide chloride containing calcium through collection, supernatant, purify, filter after, make Ca in waste water2+Content >=50g/l, Cl-The content≤20ppm, Pb of content >=100g/L, Σ Fe2+、Bi3+、Cd2+Content≤5ppm, store for future use；
2., it is configured to SO with Matrii Sulfas Exsiccatus4 2-Concentration is the metabisulfite solution of 200g/L；
3., Ca in the solution 1. obtained according to step2+2. SO in the solution obtained with step4 2-1. step is reacted by mol ratio 1:1 with the mixing of step 2. solution, and stirring is heated to 80 DEG C, adds sulphuric acid and regulates to pH=3；Being simultaneously introduced magnesium chloride and make growth regulator, the addition of described magnesium chloride is the 3% of product calcium sulfate theoretical weight, and the response time is 40min；
4., it is put in crystallizer and is aged, crystallizes 5h, obtain calcium sulphate crystal；
5., by calcium sulphate crystal carrying out vacuum filtration or centrifugal filtration, calcium sulphate crystal is collected in a reservoir and adds the H of concentration 1mol/L2SO4In dash-control pH be 3 be heated to boiling, heat filtering is also washed with deionized simultaneously, and the consumption of described deionized water is calcium sulphate crystal weight 2 times, is filtrated to get calcium sulfate crystal whiskers；
6., by whisker sending in fluidized bed dryer at 160 DEG C, drying and dewatering, packaging i.e. obtains anhydrous calcium sulfate whisker；After testing, the draw ratio 10～200, CaSO of anhydrous calcium sulfate whisker4Content >=98%, whiteness >=98%, loose thickness is≤0.5g/cm3；
7., the mother solution that obtains after 5. filtering of step add NaOH and be neutralized to pH=7, addition accounts for the salting-out agents magnesium chloride of acid mother liquid quality 20% and carries out the evaporative crystallization industry NaCl that saltouts；
8., 7. the middle aqueous mother liquor return step of step 7. middle crystallization industry NaCl magnesium chloride containing proceeds the evaporative crystallization industry NaCl that saltouts, SO in middle aqueous mother liquor4 2-Enriching quantity >=50g/L time, return solution and growth regulator magnesium chloride extracting sulfuric acid calcium crystal that 3. step replaces part 2. to obtain containing step.
Embodiment 5
Chloride waste water of the chloride process titanium dioxide of embodiment 1～embodiment 4 produces the acid mother liquid that in calcium sulfate crystal whiskers technique, step obtains after 5. filtering can also return step 3. for replacing sulfuric acid regulation solution pH value, the other the same as in Example 1～embodiment 4.
Claims (3)
1. chloride waste water of chloride process titanium dioxide produces a technique for calcium sulfate crystal whiskers, it is characterized in that: specifically comprise the following steps that
1., by the waste water of chloride for chloride process titanium dioxide through collection, supernatant, purify, filter after, make Ca in waste water2+Content >=50g/L, Cl-The content≤20ppm, Pb of content >=100g/L, Σ Fe2+、Bi3+、Cd2+Content≤5ppm, store for future use；
The waste water that described chloride process titanium dioxide is chloride is the waste water that chloride process titanium dioxide contains that calcium chloride is main component；
2., by the waste water of sulfur acid sodium through collection, supernatant, purify, filter after, make SO in waste water4 2-The content≤20ppm, Cr of content >=50g/L, Σ Fe6+Content≤5ppm, store for future use；Or it is configured to SO with Matrii Sulfas Exsiccatus4 2-Concentration is the solution for standby of 50g/L～200g/L；
3., Ca in the solution 1. obtained according to step2+2. SO in the solution obtained with step4 2-1. step is reacted by mol ratio 1:1～1:1.5 with the mixing of step 2. solution, and stirring is heated to 60 DEG C～100 DEG C, adds sulphuric acid and regulate to pH=2～5；Being simultaneously introduced magnesium chloride and make growth regulator, the addition of described magnesium chloride is the 3% of product calcium sulfate theoretical weight, and the response time is 20min～60min；
4., it is put in crystallizer and is aged, crystallizes 4h～6h, obtain calcium sulphate crystal；
5., carrying out vacuum filtration or centrifugal filtration, calcium sulphate crystal is collected in a reservoir and adds the H of concentration 1mol/L2SO4In dash-control pH be 2～5 be heated to boiling, heat filtering is also washed with deionized simultaneously, and the consumption of described deionized water is calcium sulphate crystal weight 1 times～5 times, is filtrated to get calcium sulfate crystal whiskers；
6., by whisker sending in fluidized bed dryer at 60 DEG C～200 DEG C, drying and dewatering, packaging i.e. obtains anhydrous calcium sulfate whisker；
7., the acid mother liquid that obtains after 5. filtering of step add NaOH and be neutralized to pH=6.5～7, add salting-out agents magnesium chloride and carry out the evaporative crystallization industry NaCl that saltouts, the addition of described salting-out agents magnesium chloride accounts for the 20%～40% of acid mother liquid quality；
8., 7. the middle aqueous mother liquor return step of the step 7. magnesium chloride containing that middle crystallization industry NaCl obtains proceeds the evaporative crystallization industry NaCl that saltouts, SO in middle aqueous mother liquor4 2-Enriching quantity >=50g/L time, return step and 3. replace the sodium sulfate in part steps 2. solution and growth regulator magnesium chloride, circulate extracting sulfuric acid calcium crystal.
Chloride waste water of chloride process titanium dioxide the most according to claim 1 produces the technique of calcium sulfate crystal whiskers, it is characterized in that: the waste water of described sulfur acid sodium contains Na for producing vanadic anhydride2SO4Waste water, or with produce sodium dichromate side-product Natrii Sulfas, or produce hypo contain Na2SO4Waste liquid through treatment and purification substitute.
Chloride waste water of chloride process titanium dioxide the most according to claim 1 produces the technique of calcium sulfate crystal whiskers, it is characterized in that: the acid mother liquid that step obtains after 5. filtering can also return step 3. for replacing sulfuric acid regulation solution pH value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410061397.5A CN103834989B (en) | 2014-02-24 | 2014-02-24 | The technique that chloride waste water of chloride process titanium dioxide produces calcium sulfate crystal whiskers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410061397.5A CN103834989B (en) | 2014-02-24 | 2014-02-24 | The technique that chloride waste water of chloride process titanium dioxide produces calcium sulfate crystal whiskers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103834989A CN103834989A (en) | 2014-06-04 |
| CN103834989B true CN103834989B (en) | 2016-08-17 |
Family
ID=50798872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410061397.5A Active CN103834989B (en) | 2014-02-24 | 2014-02-24 | The technique that chloride waste water of chloride process titanium dioxide produces calcium sulfate crystal whiskers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103834989B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790041B (en) * | 2015-04-13 | 2017-04-19 | 四川理工学院 | Method for preparing semi-hydrated gypsum whisker from mirabilite and calcium solution |
| CN104894650B (en) * | 2015-05-31 | 2017-08-25 | 四川理工学院 | A kind of method for preparing Dihydrate gypsum whiskers with saltcake and calcium water |
| CN105271310B (en) * | 2015-10-13 | 2017-05-10 | 锦州钛业有限公司 | Chlorination-process titanium-white high-salt wastewater comprehensive utilization method |
| CN106746162B (en) * | 2015-11-19 | 2020-10-16 | 中国石油化工股份有限公司 | Treatment method of cellulosic ethanol production wastewater |
| CN106746156B (en) * | 2015-11-19 | 2020-10-16 | 中国石油化工股份有限公司 | Method for treating epichlorohydrin production wastewater |
| CN109179618A (en) * | 2018-10-09 | 2019-01-11 | 龙蟒佰利联集团股份有限公司 | A kind of processing method of titanium dioxide wastewater |
| CN110963729A (en) * | 2020-01-03 | 2020-04-07 | 龙蟒佰利联集团股份有限公司 | Method for preparing titanium dioxide byproduct gypsum and reducing standard thickening water consumption |
| CN111547756A (en) * | 2020-05-22 | 2020-08-18 | 重庆盎瑞悦科技有限公司 | Treatment method of calcium chloride waste liquid containing organic matters |
| CN112779604B (en) * | 2021-01-20 | 2024-05-28 | 广西大学 | Process for preparing high-purity calcium sulfate whisker from iron phosphate production wastewater |
| CN113620492B (en) * | 2021-08-13 | 2023-05-26 | 龙佰集团股份有限公司 | Method for removing TOC in high-salt water generated by titanium chloride |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7179438B2 (en) * | 2005-04-20 | 2007-02-20 | Allegheny Energy, Inc. | Methods and apparatus for recovering gypsum and magnesium hydroxide |
| CN101168852B (en) * | 2007-08-31 | 2011-10-26 | 武善东 | Mass production method for calcium sulfate whisker |
| CN101343773B (en) * | 2008-08-26 | 2011-05-11 | 吉林大学 | Sodium sulfate wastewater liquid phase method in situ preparation of hydrophobic calcium sulphate crystal whisker |
| CN102443710B (en) * | 2011-12-15 | 2013-08-28 | 沈阳化工大学 | Method for treating scrapped molten salt generated in molten salt chlorination production method of TiCl4 |
| CN102765748A (en) * | 2012-07-09 | 2012-11-07 | 沈阳化工大学 | Treatment method for chlorinated waste generated during production of TiC14 |
| CN103014831B (en) * | 2012-12-28 | 2016-03-16 | 殷义甫 | A kind of production method of ultra-pure sulfuric acid calcium pyroborate |
| CN103447283B (en) * | 2013-08-30 | 2017-06-09 | 漯河兴茂钛业股份有限公司 | The Safe disposal method of waste residue produced by Titanium Dioxide Produced by Chloride Procedure production titanium tetrachloride |
| CN103449495B (en) * | 2013-08-30 | 2015-08-19 | 遵宝钛业有限公司 | A kind of utilization in titanium tetrachloride production reclaims the method that hydrochloric acid produces calcium chloride |
| CN103540751A (en) * | 2013-10-12 | 2014-01-29 | 攀枝花市仁通钒业有限公司 | Method for treating titanium tetrachloride refining tailings |
| CN103566719B (en) * | 2013-10-28 | 2016-04-06 | 沈阳化工大学 | Utilize and produce TiCl 4the waste chlorination molten salt produced prepares the method for desulfurizing agent raw material |
-
2014
- 2014-02-24 CN CN201410061397.5A patent/CN103834989B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103834989A (en) | 2014-06-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103834989B (en) | The technique that chloride waste water of chloride process titanium dioxide produces calcium sulfate crystal whiskers | |
| CN100424026C (en) | Method for combined production of gypsum, active carbon, and copperas by using waste sulfuric acid and carbide slag | |
| CN106277005B (en) | A kind of method that ice crystal, calcium carbonate and sodium sulphate are reclaimed in the resource from calcium fluoride sludge | |
| CN101618880A (en) | Method for synthesizing pure 4A zeolite, P-shaped zeolite and sodalite with concavo-convex attapulgite clay | |
| CN102874851A (en) | Method of utilizing brine to coproduce magnesium hydroxide and calcium sulfate whisker | |
| CN102776569A (en) | Method for preparing calcium sulfate crystal whiskers by using natural gypsum | |
| CN104261525A (en) | Preparation method of polyaluminum ferric chloride | |
| CN103214077A (en) | Preparation method of byproduct high-purity calcium sulphate by deep purification of nitrate aqueous solution | |
| CN104512951B (en) | A kind of method of utilizing PAC residue coproduction polymeric aluminum sulfate silicate iron and wastewater treatment pulvis | |
| CN104477960B (en) | A kind of production method of potassium alum | |
| CN105439184A (en) | Resource utilization method of distilled ammonia waste liquid during sodium carbonate production and preparation system | |
| CN102351245B (en) | Continuous production method for ammonium vanadate | |
| CN108862729A (en) | A kind of method of chlor-alkali salt sludge sub-prime recycling comprehensive utilization | |
| CN113816399A (en) | Method for recycling NaCl and recycling Fe, Mn and Mg resources in titanium slag | |
| CN106082255B (en) | A kind of method and its application efficiently preparing artificial zeolite using waterworks sludge | |
| CN101475328A (en) | Gypsum rotating crystal excitant and use for producing construction gypsum from marine gypsum | |
| CN111115673A (en) | Method for utilizing all components of caustic sludge | |
| CN105350066B (en) | A kind of method that ardealite prepares hemihydrate calcium sulfate crystal whisker | |
| Mirzakulov et al. | PROCESSING BRINE OF SALT LAKES OF KARAKALPAKSTAN IN PRODUCTS OF ECONOMIC PURPOSE. | |
| CN104445337A (en) | Method for preparing low-chloride gypsum by using ammonia-soda distillation waste liquid and brine | |
| CN115305574B (en) | Method for rapidly preparing whisker by using phosphogypsum and saline | |
| CN101319382B (en) | Calcium sulphate crystal whisker preparation method with sea water bittern as raw material | |
| CN109368850A (en) | A kind of desulfurization wastewater recycling treatment system and application method | |
| CN110408999A (en) | A method of calcium sulfate crystal whiskers are produced using soda ash evaporated waste ammonia liquid | |
| CN1046142A (en) | Material and bicarbonate of ammonia with contains sodium sulfate are the producing soda by solid-phase process of raw 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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 121005 Jin Ti Road 1, Taihe District, Jinzhou, Liaoning Patentee after: Jinzhou titanium Limited by Share Ltd Address before: 121005 Taihe District, Liaoning City, Jinzhou province No. 59 Patentee before: Jinzhou Titanium Industry Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 121005 1 Jintai Road, Taihe District, Jinzhou, Liaoning Patentee after: CITIC titanium Limited by Share Ltd Address before: 121005 1 Jintai Road, Taihe District, Jinzhou, Liaoning Patentee before: Jinzhou titanium Limited by Share Ltd |
|
| CP01 | Change in the name or title of a patent holder |