CN105217755B - Method for preparing titanium-containing inorganic flocculant - Google Patents
Method for preparing titanium-containing inorganic flocculant Download PDFInfo
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Abstract
The invention discloses a preparation method of a titanium-containing inorganic flocculant, and relates to the technical field of preparation methods of inorganic flocculants in the technical field of chemistry. Taking vanadium titano-magnetite as a basic raw material, adding sodium or potassium salt additive into iron ore concentrate obtained by magnetic separation in electric furnace reduction smelting to obtain molten iron and titanium-containing slag, wherein: vanadium and iron are reduced into molten iron, and under the condition of high smelting temperature, silicon and aluminum impurities and sodium or potassium salt additives form sodium aluminosilicate soluble in dilute acid and remain in titaniferous slag together with titanium and calcium magnesium impurities; and then, extracting silicon, aluminum and iron in the titanium-containing slag by adopting a hydrometallurgy method aiming at the titanium-containing slag to be used as raw materials for preparing the inorganic polymeric flocculant. According to the invention, the sodium salt additive is added during the electric furnace smelting of the iron ore concentrate, so that the leaching rate of silicon and aluminic acid in the smelting slag is greatly improved, a raw material is provided for the preparation of an inorganic flocculant, and the key technical problem of titanium-rich impurity reduction of titanium-containing slag is solved.
Description
Technical field
The present invention relates to the preparation method technical field of inorganic flocculating agent in technical field of chemistry.
Background technology
In recent years, water pollution and shortage of water resources problem increasingly become an important factor for restricting China's economic development.
Preventing and controlling of the country to water pollution are also paid much attention to, and State Council printed and distributed on April 16th, 2015《Water prevention and cure of pollution action meter
Draw》, explicitly point out in the works, to the year two thousand twenty, all county towns in the whole nation and emphasis town possess sewage collecting disposal ability, county town, city
City's wastewater treatment rate respectively reaches 85%, 95% or so.Therefore, endangered to mitigate and eliminate sewage to caused by the mankind and environment
Evil, it is necessary to strengthen the purified treatment research of sewage.In general, method for treating water is divided into biochemical process, electrochemical process, ion exchange
Method, absorption method, membrane separation process and flocculence etc., wherein, flocculence is one of most widely used, most economical processing method.Closely
Developed over year than conventional aluminum, the composite inorganic high molecular wadding that Ferric Salt Flocculants effect is more preferable, stability is stronger, cost is lower
Solidifying agent has turned into the hot research topic of water treatment agent field.
At present, wide variety of coagulant mainly has traditional flocculant, inorganic polymer flocculant in water treatment field
With organic polymer coargulator three major types.Inorganic polymer flocculant is developed on the basis of tradition aluminium salt, Ferric Salt Flocculants
A kind of novel water-treatment medicament come, is often Al（Ⅲ）, Fe（Ⅲ）, Si（Ⅳ）Hydroxyl polynuclear complex or hydroxyl polymeric
Thing.Inorganic polymer flocculant unit molecular weight is only thousands of, can not show a candle to organic polymer up to tens million of, but its structure
It is easier to be arranged in regular micro-crystal type, is self-assembled into as chain and branch-like, can also play more stronger than traditional flocculant
Flocculation bridging action.Therefore, develop a kind of efficient, inorganic polymer flocculant stably, cheap has turned into water process neck
One of the vital task in domain.
The preparation method of inorganic polymer flocculant mainly has three kinds：1. the sodium metasilicate aqueous slkali of alite mixed liquor neutralizes
Method, the 2. aluminium of polysilicon acid, molysite addition method, 3. inorganic mineral acidleach（Alkali soaks）Liquid neutralisation.And flocculant active principle Al
（Ⅲ）、Fe（Ⅲ）、Si（Ⅳ）Mainly it is prepared from waste materials such as aluminium scrap ash, flyash, gangue, aluminium vanadine through acidolysis, alkali fusion.
Ren Genkuan etc. is primary raw material using modified coal ash and hydrochloric acid, prepares aluminium iron polychloride floculant（It is standby poly- with coal ash for manufacturing
Close the research of aluminum ferric chloride flocculant, light metal, the fourth phase in 2012）.Zhao Jingtao etc. is prepared for poly- silicon by raw material of bentonite
Sour sulfuric acid aluminium flocculating agent.Li Fengfeng etc. prepares flocculant poly aluminium iron silicate with zinc-plated sludge and iron tailings, suitable for industrialized production.
（A kind of method that flocculant poly aluminium iron silicate is prepared with zinc-plated sludge and iron tailings, CN201310036342.4）.
Vanadium titano-magnetite is the important Polymetallic Minerals resource in China, in existing production procedure, accounts for titanium resource amount 50%
TiO2Into magnetic separation of iron ore concentrate, finally it is lost in and is not used in blast furnace slag, people has carried out a variety of new technologies for this
Research, wherein non-blast furnace ironmaking technique most development potentiality, iron ore concentrate can be obtained containing TiO after reduction melting250% ± titanium
Slag, but the smelting slag is still not reaching to commerical grade acid-dissolved titanium slag TiO2Content ＞ 74% requirement, direct acidolysis produce titanium white
Powder technical-economic index is poor, at present to smelting slag no matter using the removal of impurities of ore dressing physics, or hydrometallurgy removal of impurities, rich titanium removal of impurities
Effect is undesirable.
And in the prior art, also without using raw material based on vanadium titano-magnetite, the iron ore concentrate warp that magnetic separation is obtained is also
The smelting slag that former melting obtains occurs as the preparation technology of inorganic flocculating agent.
The content of the invention
It is contemplated that the defects of present in above-mentioned prior art and deficiency, there is provided a kind of titaniferous inorganic flocculating agent
Preparation method, key to the invention is that adding sodium salt additive during iron ore concentrate electro-smelting, make silicon in smelting slag, aluminium in high temperature
It is changed into activity higher soluble silicate and aluminate under melting condition, silicon in smelting slag, aluminic acid solution greatly improved
Leaching rate, raw material both was provided for producing for inorganic flocculating agent, and solved Ti-containing slag richness titanium again and drop miscellaneous key technical problem.
The present invention is realized by using following technical proposals：
A kind of preparation method of titaniferous inorganic flocculating agent, it is characterised in that：The raw material based on vanadium titano-magnetite, by magnetic
The iron ore concentrate that choosing obtains adds sodium or sylvite additive in electric furnace reduction melting, obtains molten iron and Ti-containing slag, wherein：Vanadium,
Iron enters molten iron through reduction, and under melting hot conditions, silicon, aluminium impurity are formed with sodium or sylvite additive dissolves in diluted acid
The alumino-silicate of sodium, and stayed in titanium and calcium and magnesium impurity in Ti-containing slag；Then, carried for Ti-containing slag using hydrometallurgical
Silicon, aluminium and the iron in Ti-containing slag are taken, as the raw material for producing inorganic polymer flocculant.
It is comprised the following steps that：
A, electric furnace reduction melting：Iron ore concentrate is incorporated reducing agent coal and sodium or sylvite additive, in mineral hot furnace（It is or other
Direct reduction furnace）Reduction melting is carried out, vanadium, iron reduction enter molten iron, and molten iron is using converter oxidation vanadium extracting separation iron, vanadium, molten
Refine under hot conditions, the silicon of hardly possible reduction, aluminium impurity and sodium or sylvite additive formed the alumino-silicate for dissolving in diluted acid and titanium and
Calcium and magnesium impurity is stayed in Ti-containing slag:
；
B, Ti-containing slag acidleach：Ti-containing slag is carried out with H ion concentrations 2-3N dilute sulfuric acid or watery hydrochloric acid at ambient pressure
Hydrometallurgy is leached, and the alumino-silicate of diluted acid is dissolved in slag and acid reaction forms silicic acid and aluminium salt enters solution, while in slag
Part iron and a small amount of Low-valent Titanium are also acid hydrolysis into leachate, are passed through during leaching to adjust and are leached liquid-solid ratio and control leachate SiO2
Concentration 20-30g/l：
；
C, oxidation polymerization：Using step b leachate as raw material, NaClO is added3Oxidant 1-10g/l, by Fe in solution2+
It is oxidized to Fe3+, meanwhile, add appropriate Fe3+, adjust SiO2/（Al+Fe）Mol ratio 1-3, with alkali lye adjust pH value of solution 3.0
±, stirring at normal temperature 2h, silicic acid and AlCl3、FeCl3Or Al2(SO43、Fe2(SO4)3Generation polymerisation, generate polyphosphazene polymer silicic acid
Ferro-aluminum；
D, it is still aging:
The polyphosphazene polymer aluminium iron silicate product that step c is produced stands 24h, as titaniferous inorganic polymer flocculant liquid
Product, it is used to handle industrial wastewater and sanitary sewage as water purification agent.
The titaniferous inorganic polymer flocculant liquid form product that step d is obtained is produced using spray drying process and obtains solid wadding
Solidifying agent product.
In a steps, the weight proportion between iron ore concentrate, reducing agent coal, sodium or sylvite additive three is：100:12-25:
1-10。
Weight proportion in a steps between iron ore concentrate, reducing agent coal, sodium or sylvite additive three is：100:14:2.
In b step, Ti-containing slag acidleach specifically refers to：Titanium slag comminution to -100 mesh is accounted for 100% ± granularity, use is dilute
Salt Ore Leaching titanium slag, wherein：Concentration of hydrochloric acid 11%, liquid-solid ratio 4 is leached, stirring at normal temperature leaches 1h, and leaching carries out solid-liquid point after terminating
From.
The mode of the separation of solid and liquid includes vacuum filtration, plate compression or centrifugation.
The titaniferous inorganic polymer flocculant liquid form product of Step d is used to simulate kaolin wastewater treatment, it is useless by every liter
Water adds 2.0 ml liquid titaniferous inorganic polymer flocculant products.
Compared with prior art, what the present invention was reached has the beneficial effect that：
1st, in the present invention, using raw material based on vanadium titano-magnetite, the iron ore concentrate that magnetic separation obtains is obtained through reduction melting
Preparing raw material of the smelting slag obtained as inorganic flocculating agent, there is presently no similar techniques appearance, key to the invention is that iron is smart
Sodium or sylvite additive are added during ore deposit electro-smelting, make silicon in smelting slag, aluminium be changed under the conditions of high melt activity compared with
High soluble silicate and aluminate, silicon in smelting slag, aluminic acid solution leaching rate greatly improved, be both inorganic flocculating agent
Produce and provide raw material, solve Ti-containing slag richness titanium again and drop miscellaneous key technical problem.
2nd, in the present invention, electro-smelting introduces sodium salt additive, not only changes the impurity things such as sial in smelting slag
Change property, improve silicon, aluminium impurity it is acid-soluble, and smelting slag viscosity is reduced, beneficial to slag sluicing system.
3rd, smelting slag is cleaned using simple diluted acid leaching, and sial impurity leaching rate is high, both to produce inorganic flocculating agent
Suitable base is provided, while also obtain the rich-titanium material product of commerical grade（Acid-dissolved titanium slag）.
4th, acid removal of impurities waste water can directly produce inorganic water purification agent, and addition reagent is few, eliminates general inorganic flocculating agent
Silicic acid polymerization process, technique is simple, easy to operate, and production cost is low, is discharged without " three wastes ".
5th, flocculant produces the acidolysis removal of impurities waste water that raw material is titaniferous smelting slag, solves the improvement of main technique waste water with answering
With problem, utilization of wastewater resource is realized.
6th, a small amount of TiO is contained in flocculant product2, its light-catalyzed reaction is in organic pollution and inorganic pollution waste water
There is good action in processing, be favorably improved product to sewage（Waste water）Turbidity removal, the ability except color and except COD.
7th, the titaniferous inorganic flocculating agent product that the present invention produces can be used for sanitary sewage and Industrial Wastewater Treatment, have stronger
Turbidity removal, the ability except color and except COD, there is flco to form the characteristics of fast, flco is big, sinking speed is fast.
8th, in the present invention, using sodium or sylvite additive is added in iron ore concentrate electric furnace reduction melting, with Publication No. CN
102382919A patent documents are compared for the prior art of representative, and although prior art is mentioned can use sodium salt together with clinker
Roasting, but the purpose is to make vanadium therein, titanium be converted into sodium vanadate and sodium titanate, and in invention, it is directly in reduction melting
Sodium or sylvite additive are first added, rather than is calcined after reduction melting together with clinker, the present invention is in electric furnace reduction fusion process
In, silicon, aluminium impurity and sodium or sylvite additive form the alumino-silicate for the sodium for dissolving in diluted acid, and are stayed in titanium and calcium and magnesium impurity
In Ti-containing slag；Then, purified for Ti-containing slag using hydrometallurgy impurity-removing method, acquisition contains TiO2＞ 75%, it can use
In the acid-dissolved titanium slag product of sulfuric acid Producing Titanium Dioxide, titanium in iron ore concentrate is set to have obtained efficient and rational utilization.Meanwhile by reducing
Melting process adds slag modifying additive sodium salt, not only improves slag fluidity, and to clinker later stage sial impurity
Removal creates advantage, and preferably solve the problems, such as titanium in iron ore concentrate efficiently separates extractive technique, greatly improved iron,
The utilization rate of the resource utilization of titanium, vanadium, particularly titanium improves nearly 3 times compared with blast furnace process, and detailed comparisons' data are shown in embodiment.
9th, in the present invention, the weight proportion in a steps between iron ore concentrate, reducing agent coal, sodium or sylvite additive three is：
100:14:2, so specific selection percentage, by the reduction coal of iron ore concentrate supplying 14%（Fixed C content 83%, ash content 7.3%）、2%
Soda ash, reduction melting is carried out using mineral hot furnace and obtains titanium slag and the pig iron respectively, the pig iron is using the progress of converter oxidation vanadium extracting technique
Vanadium titanium separation and Extraction, titanium slag is using diluted acid leaching removal of impurities production acid-dissolved titanium slag.Titanium slag TiO2Operation recovery ＞ 96%, the pig iron
Metal iron recovery ＞ 98%.
10th, in the present invention, titanium slag comminution to -100 mesh is accounted for 100% ± granularity, purified using the acid-hatching of young eggs.Using dilute salt
Acid or sulfuric acid leaching titanium slag, it is therefore intended that partly soluble alumino-silicate in dissolution slag, improve titanium slag TiO2Grade, it is molten to reach acid
Property titanium slag product requirement.Optimal conditions：Concentration of hydrochloric acid 11%, leaches liquid-solid ratio 4, and stirring at normal temperature leaches 1h.After leaching terminates, Gu
Liquid separation uses vacuum filter.Titanium slag product TiO2Operation recovery ＞ 98%, SiO2、Al2O3Impurity leaching rate is respectively up to 90%
With more than 80%.
Embodiment
By embodiment, the present invention is described in further detail below：
Embodiment 1
As the better embodiment of the present invention, it discloses a kind of preparation method of titaniferous inorganic flocculating agent, with vanadium
Raw material based on titanomagnetite, the iron ore concentrate that magnetic separation obtains is added into sodium or sylvite additive in electric furnace reduction melting（Such as
Sodium carbonate, sodium hydroxide, sodium oxide molybdena, potassium carbonate, potassium hydroxide, potassium oxide）, molten iron and Ti-containing slag are obtained, wherein：Vanadium, iron
Enter molten iron through reduction, and under melting hot conditions, silicon, aluminium impurity form the sodium for dissolving in diluted acid with sodium or sylvite additive
Alumino-silicate, and stayed in titanium and calcium and magnesium impurity in Ti-containing slag；Then, extracted for Ti-containing slag using hydrometallurgical
Silicon, aluminium and iron in Ti-containing slag, as the raw material for producing inorganic polymer flocculant.
Embodiment 2
As the better embodiment of the present invention, it is comprised the following steps that：
A, electric furnace reduction melting：Iron ore concentrate is incorporated reducing agent coal and sodium or sylvite additive, in mineral hot furnace（It is or other
Direct reduction furnace）Reduction melting is carried out, vanadium, iron reduction enter molten iron, and molten iron is using converter oxidation vanadium extracting separation iron, vanadium, molten
Refine under hot conditions, the silicon of hardly possible reduction, aluminium impurity and sodium or sylvite additive formed the alumino-silicate for dissolving in diluted acid and titanium and
Calcium and magnesium impurity is stayed in Ti-containing slag:
；
B, Ti-containing slag acidleach：Ti-containing slag is carried out with H ion concentrations 2-3N dilute sulfuric acid or watery hydrochloric acid at ambient pressure
Hydrometallurgy is leached, and the alumino-silicate of diluted acid is dissolved in slag and acid reaction forms silicic acid and aluminium salt enters solution, while in slag
Part iron and a small amount of Low-valent Titanium are also acid hydrolysis into leachate, are passed through during leaching to adjust and are leached liquid-solid ratio and control leachate SiO2
Concentration 20-30g/l：
；
C, oxidation polymerization：Using step b leachate as raw material, NaClO is added3Oxidant 1-10g/l, by Fe in solution2+
It is oxidized to Fe3+, meanwhile, add appropriate Fe3+, adjust SiO2/（Al+Fe）Mol ratio 1-3, with alkali lye adjust pH value of solution 3.0
±, stirring at normal temperature 2h, silicic acid and AlCl3、FeCl3Or Al2(SO43、Fe2(SO4)3Generation polymerisation, generate polyphosphazene polymer silicic acid
Ferro-aluminum；
D, it is still aging:
The polyphosphazene polymer aluminium iron silicate product that step c is produced stands 24h, as titaniferous inorganic polymer flocculant liquid
Product, it is used to handle industrial wastewater and sanitary sewage as water purification agent.
Embodiment 3
On the basis of embodiment 1 or 2, in a steps, between iron ore concentrate, reducing agent coal, sodium or sylvite additive three
Weight proportion is：74： 16：10.In b step, Ti-containing slag acidleach specifically refers to：Titanium slag comminution to -100 mesh is accounted for 100% ±
Granularity, using watery hydrochloric acid leach titanium slag, wherein：Concentration of hydrochloric acid 11%, liquid-solid ratio 4 is leached, stirring at normal temperature leaches 1h, leaches knot
Separation of solid and liquid is carried out after beam.
Embodiment 4
Application example：
1st, raw material
Raw material contains concentrated ilmenite, main chemical compositions for what Panxi Area, Sichuan Province vanadium titano-magnetite obtained after ore dressing sorts
It is shown in Table 1.
2nd, reduction melting clinker is modified
The soda ash of supplying 1~10% in the iron melting of electric furnace reduction containing concentrated ilmenite（Depending on raw silicon aluminium content）, high temperature
Under the conditions of reduction melting, vanadium, iron, which reduce, enters the pig iron, the SiO of difficult reduction in clinker2、Al2O3React to form solubility with sodium salt
Silicate and aluminate, Ti-containing slag is obtained after slag sluicing system.Ti-containing slag（Or melting slag）Main chemical compositions are shown in Table 2.
3rd, Ti-containing slag acidleach
Titanium slag comminution to -100 mesh is accounted for 100% ± granularity, can in dissolution slag using watery hydrochloric acid or sulfuric acid leaching titanium slag
Molten alumino-silicate and part iron, calcium, magnesium addition and a small amount of titanium, the leachate of titaniferous, iron, silicon and aluminium is obtained, as producing nothing
The liquid charging stock of machine high polymer coagulant, while improve titanium slag TiO2Grade.Optimal conditions：Concentration of hydrochloric acid 11%, leach liquid-solid ratio
4, stirring at normal temperature leaches 1h.After leaching terminates, separation of solid and liquid uses vacuum filter.Titanium slag SiO2、Al2O3Impurity leaching rate is distinguished
Up to 90% and more than 80%.Leachate main chemical compositions are shown in Table 3.
4th, oxidative polymerization
The leachate that titanium slag acidleach obtains adds NaClO3Aoxidize the Fe in solution2+, according to SiO in solution2/（Al+Fe）
Mol ratio add appropriate Fe3+, with alkali lye adjust pH value of solution 3.0 ±, stirring at normal temperature about 1-3h, you can obtain poly aluminium iron silicate
High-molecular compound.Optimal conditions：NaClO3Addition 4g/l, Fe3+Additional amount 4-7g/l, solution Ph3.0, stirring at normal temperature is about
2h。
5th, it is still aging
The polyphosphazene polymer aluminium iron silicate product that oxidative polymerization is obtained stands 24h, and as titaniferous inorganic polymer is wadded a quilt with cotton
Solidifying agent liquid form product, it is used to handle industrial wastewater and sanitary sewage as water purification agent.
6th, products application
The water purification agent product of preparation is used to simulate kaolin wastewater treatment, modulus intends kaolin waste water 500ml in capacity
In 1000ml, the beaker with bar magnet, to add 2.0 ml liquid titaniferous inorganic polymer flocculant products by every liter of waste water, quickly
Stirring（200r/min）4 minutes, then mix slowly（60r/min）2 minutes, 20 minutes are stood, takes liquid progress at 2cm under liquid level
Analysis detection, turbidity removal rate is up to more than 95%.
The titaniferous inorganic polymer flocculant liquid form product shelf-life that the present invention produces up to 3 months, is applicable processing waste water
PH value 6.5-14.
Claims (7)
- A kind of 1. preparation method of titaniferous inorganic flocculating agent, it is characterised in that：The raw material based on vanadium titano-magnetite, by magnetic separation The iron ore concentrate of acquisition adds sodium or sylvite additive in electric furnace reduction melting, obtains molten iron and Ti-containing slag, wherein：Vanadium, iron Enter molten iron through reduction, and under melting hot conditions, silicon, aluminium impurity form the sodium for dissolving in diluted acid with sodium or sylvite additive Alumino-silicate, and stayed in titanium and calcium and magnesium impurity in Ti-containing slag；Then, extracted for Ti-containing slag using hydrometallurgical Silicon, aluminium and iron in Ti-containing slag, as the raw material for producing inorganic polymer flocculant；It is comprised the following steps that：A, electric furnace reduction melting：Iron ore concentrate is incorporated reducing agent coal and sodium or sylvite additive, it is in mineral hot furnace or other direct Reduction furnace carries out reduction melting, and vanadium, iron reduction enter molten iron, and molten iron is using converter oxidation vanadium extracting separation iron, vanadium, in melting high temperature Under the conditions of, the alumino-silicate for dissolving in diluted acid and titanium are formed with sodium or sylvite additive for the difficult silicon reduced, aluminium impurity and calcium and magnesium is miscellaneous Matter is stayed in Ti-containing slag:；B, Ti-containing slag acidleach：Wet method is carried out with H ion concentrations 2-3N dilute sulfuric acid or watery hydrochloric acid at ambient pressure to Ti-containing slag Metallurgy is leached, and the alumino-silicate of diluted acid is dissolved in slag and acid reaction forms silicic acid and aluminium salt enters solution, while part in slag Iron and a small amount of Low-valent Titanium are also acid hydrolysis into leachate, are passed through during leaching to adjust and are leached liquid-solid ratio and control leachate SiO2Concentration 20-30g/l：；C, oxidation polymerization：Using step b leachate as raw material, NaClO is added3Oxidant 1-10g/l, by Fe in solution2+Oxidation For Fe3+, meanwhile, add appropriate Fe3+, adjust SiO2/（Al+Fe）Mol ratio 1-3, with alkali lye adjust pH value of solution 3.0, normal temperature Stir 2h, silicic acid and AlCl3、FeCl3Or Al2(SO4)3、Fe2(SO4)3Generation polymerisation, generate polyphosphazene polymer aluminium iron silicate；D, it is still aging:The polyphosphazene polymer aluminium iron silicate product that step c is produced stands 24h, and as titaniferous inorganic polymer flocculant liquid is produced Product, it is used to handle industrial wastewater and sanitary sewage as water purification agent.
- A kind of 2. preparation method of titaniferous inorganic flocculating agent according to claim 1, it is characterised in that：Step d is obtained Titaniferous inorganic polymer flocculant liquid form product using spray drying process produce obtain solid flocculant product.
- A kind of 3. preparation method of titaniferous inorganic flocculating agent according to claim 1, it is characterised in that：In a steps, iron essence Weight proportion between ore deposit, reducing agent coal, sodium or sylvite additive three is：100:12-25:1-10.
- A kind of 4. preparation method of titaniferous inorganic flocculating agent according to claim 1, it is characterised in that：Iron essence in a steps Weight proportion between ore deposit, reducing agent coal, sodium or sylvite additive three is：100:14:2.
- A kind of 5. preparation method of titaniferous inorganic flocculating agent according to claim 1, it is characterised in that：In b step, titaniferous Clinker acidleach specifically refers to：By titanium slag comminution to the granularity that 100% is accounted for less than 100 mesh, titanium slag is leached using watery hydrochloric acid, wherein：Salt Acid concentration 11%, liquid-solid ratio 4 is leached, stirring at normal temperature leaches 1h, and leaching carries out separation of solid and liquid after terminating.
- A kind of 6. preparation method of titaniferous inorganic flocculating agent according to claim 5, it is characterised in that：The separation of solid and liquid Mode include vacuum filtration, plate compression or centrifugation.
- A kind of 7. preparation method of titaniferous inorganic flocculating agent according to claim 1, it is characterised in that：By containing for Step d Ti-inorganic high polymer coagulant liquid form product is used to simulate kaolin wastewater treatment, and 2.0 ml liquid titaniferous are added by every liter of waste water Inorganic polymer flocculant product.
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| CN107235531B (en) * | 2017-06-27 | 2019-08-27 | 福建省农业科学院农业工程技术研究所 | A kind of purifying agent for polluted water of modifying titanium dioxide chelating poly aluminium iron silicate |
| CN109319896B (en) * | 2018-11-05 | 2021-08-24 | 攀枝花学院 | Method for preparing flocculating agent from fly ash and vanadium-titanium magnetite |
| CN113072150B (en) * | 2021-04-22 | 2022-06-17 | 重庆理工大学 | Method for preparing iron-titanium-vanadium ternary inorganic polymeric flocculant based on sulfuric acid acidolysis vanadium-titanium magnetite two-step method |
| CN113072151B (en) * | 2021-04-23 | 2022-05-31 | 重庆理工大学 | Method for preparing iron-titanium-vanadium ternary polymeric flocculant from vanadium titano-magnetite through one-step method by acid dissolution of hydrochloric acid |
| CN115092967B (en) * | 2022-07-27 | 2024-03-15 | 成都纺织高等专科学校 | Method for preparing polymeric aluminum ferric titanium sulfate |
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| CN104386787A (en) * | 2014-09-10 | 2015-03-04 | 济南大学 | Inorganic ferrotitanium polymeric coagulant with ilmenite as raw material and preparation technology thereof |
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