MTW European Type Trapezium Mill
Input size:30-50mm
Capacity: 3-50t/h
LM Vertical Roller Mill
Input size:38-65mm
Capacity: 13-70t/h
Raymond Mill
Input size:20-30mm
Capacity: 0.8-9.5t/h
Sand powder vertical mill
Input size:30-55mm
Capacity: 30-900t/h
LUM series superfine vertical roller grinding mill
Input size:10-20mm
Capacity: 5-18t/h
MW Micro Powder Mill
Input size:≤20mm
Capacity: 0.5-12t/h
LM Vertical Slag Mill
Input size:38-65mm
Capacity: 7-100t/h
LM Vertical Coal Mill
Input size:≤50mm
Capacity: 5-100t/h
TGM Trapezium Mill
Input size:25-40mm
Capacity: 3-36t/h
MB5X Pendulum Roller Grinding Mill
Input size:25-55mm
Capacity: 4-100t/h
Straight-Through Centrifugal Mill
Input size:30-40mm
Capacity: 15-45t/h
Titanium dioxide process and three wastes treatment by sulfuric acid method
Sustainable recovery of titanium from secondary resources: A review
2023年8月1日 Currently, there are three main treatment methods for the waste titanium produced in the process of titanium ingot production: The first is used in the iron and steel 2024年9月20日 Selective electrodialysis was employed to recover sulfuric acid from the titanium dioxide waste acid Membrane electrolysis method was utilized to oxidize Fe 2+ and separate Recovery of sulfuric acid and iron from titanium dioxide waste acid 2023年12月29日 Therefore, this study proposed a treatment process primarily based on membrane electrolysis Initially, selective electrodialysis was employed to recover sulfuric acid Recovery of Sulfate Acid and Iron from Titanium Dioxide Waste 2022年4月21日 The sulfuric acid leaching method is an essential process for producing titanium dioxide from ilmenite due to the low requirements for feed grade In China, more than 90% of A Novel Approach for Separation and Recovery of Titanium,
Recycling sulfur and iron resources in the waste ferrous sulfate
2014年12月4日 The production of 1 t titanium dioxide will generate 3–4 t of ferrous sulfate, as well as 8–10 t of waste sulfuric acid (20 %) in the sulfuric acid process [1–3]2023年5月26日 In a pilot study, a dualmembrane method of ultrafiltration (UF) and reverse osmosis (RO) was employed to perform deep treatments of sulfuricacid–titaniumdioxide wastewaterPilot Study on the Deep Treatment of Sulfuric 2014年7月15日 The method comprises the steps of feeding frontsection primarily washed wastewater with sulfuric acid concentration being not less than 5% in the metatitanic acid Method for treating titanium dioxide wastewater through sulfuric 2023年5月26日 Abstract: The production of titanium dioxide via the sulfuric acid process generates large amounts of acidic wastewater Investigating the possibility of reusing this Pilot Study on the Deep Treatment of SulfuricAcid Titanium
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Treatment and recovery process of acid wastewater in titanium dioxide
Adopt Titanium White Production By Sulfuric Acid Process, operational path is long, and three wastes discharge amount is large, pollutes more seriously, is the subject matter that current manufacturing enterprise facesTitanium dioxide yield is low simultaneously, compares still have larger gap with Foreign Advanced LerelThe TiO of the middlesize and smallsize titanium acid of titanium dioxide, which has certain reference significance for carrying out new research on acid waste treatment processes Keywords: Chlorination method; Waste acid; Mechanical separation Resource Treatment of Titanium White Acid by Chlorination Method 2023年7月19日 A twostage extraction process was proposed to recover sulfuric acid and vanadium from simulated acid solution and titanium dioxide waste acid (TDWA) Some extractants were compared and studied, in which the enthalpy Sustainable Selective Recovery of Sulfuric Acid and 2020年2月1日 In order to concentrate the diluted sulfuric acid from the titanium dioxide (TiO2) production of sulphate process, a new concentration process was proposed by coupling chemical dehydration and Chemical dehydration coupling multieffect evaporation to treat waste
Separation and Extraction of Scandium from Titanium Dioxide Waste Acid
2021年3月24日 The solvent extraction method for extracting scandium from titanium dioxide waste acid is usually accompanied by coextraction of titanium In this paper, the scandium and titanium separation of The method of producing titanium dioxide at present mainly contains chlorination process and sulfuric acid processThe main drawback of chlorination process is relatively harsher to the requirement of raw material, and chlorine and titanium tetrachloride all are toxic gases under the normal temperature, these two kinds of gases all easily and water react, produce serious Process for recovering sulfuric acid and sulfate from waste acid nificant volumes of waste sulfuric acid For instance, the factories for the production of titanium dioxide (which are used especially in the manufacture of paints and surface coatings) generate eight tons of waste sulfuric acid (with a sulfuric acid concentration of about 20% by weight) per one ton of titanium dioxide [1] The treatment and Experimental study of wastewater treatment containing sulfuric acid 2023年12月16日 Currently, although the chloride method accounts for 601 % of global titanium dioxide production, the sulfuric acid method still dominates in China with a share of 95 % [1]However, compared to the chlorination process, the sulfuric acid process exhibits lower titanium conversion rates and consumes significantly more water (3–8 times)Reuse of waste acid from titanium dioxide industry: Efficient
Optimization Extraction of Scandium from Scandium Concentrate
2024年2月20日 Scandium concentrate and titanium dioxide wastewater (TDWW) all belong to waste, especially TDWW belongs to hazardous waste, it is urgent to find a more efficient and safer treatment method to deal with them, and both waste acid and waste ore contain scandium The use of waste acid as a leaching agent can achieve the synergistic recovery effect of 2024年1月20日 Using the chlorination method to produce titanium dioxide, approximately 6~8t of waste acid with a mass fraction of about 20% is generated per 1t of titanium dioxide producedIn order to address Comprehensive Resource Treatment of Titanium White Waste Acid 2020年10月28日 The main methods of obtaining titanium dioxide (with the structure of anatase, rutile or brookite) in the form of spheres, rods, fibers, and tubes include: solgel technology, hydrothermal and Methods of Titanium Dioxide Synthesis (Review)2022年4月21日 The sulfuric acid leaching method is an essential process for producing titanium dioxide from ilmenite due to the low requirements for feed grade []In China, more than 90% of titanium dioxide is yielded by the sulfuric acid leaching method, and the production of 1 ton of titanium dioxide engenders about 8 tons of acidic wastewater [2, 3]A Novel Approach for Separation and Recovery of Titanium,
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Separation and Extraction of Scandium from Titanium Dioxide Waste Acid
2021年3月24日 The solvent extraction method for extracting scandium from titanium dioxide waste acid is usually accompanied by coextraction of titanium In this paper, the scandium and titanium separation of the Sc(III) and Ti(IV)loaded organic phase and the recovery of scandium were studied A new scrubbing agent containing Na3Cit and H2O2 was used to selectively Titanium dioxide information communication 1996 No2 reports that Bayer company sulfuric acid method titanium dioxide wastefree byproduct technology is that acidcontaining wastewater is subjected to preconcentration treatment, metal sulfate is separated out, then the acidcontaining wastewater is further concentrated, and the generated concentrated sulfuric acid is returned to Method for preparing ferrous ammonium sulfate by using waste 2023年7月19日 ABSTRACT: A twostage extraction process was proposed to recover sulfuric acid and vanadium from simulated acid solution and titanium dioxide waste acid (TDWA) Some extractants were compared and studied, in which the enthalpy changes (ΔH) of the extraction process and the extracted complex were analyzed by using thermodynamicsSustainable Selective Recovery of Sulfuric Acid and Vanadium 2021年8月1日 The waste sulfuric acid solution generated from titanium dioxide production is called titanium dioxide waste acid (TWWA), which is an important resource for scandium productionHighly efficient recovery and purification of scandium from the waste
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Recovery of tungsten and titanium from spent SCR catalyst by sulfuric
2023年1月1日 At present, there have been many reports on resource recovery from spent SCR catalysts Table 1 lists results using roastingleaching, acid leaching and alkali leaching to reuse catalysts Limited by the differences in the solubility of Ti, W, and V, most previous studies have focused on the extraction and separation of Ti, V and W separately from spent SCR catalystsWaste acid after processing titanium dioxide contains valuable resources The reprocessing and valueadded of waste acid is gradually becoming the focus of titanium pigment industry In this paper, the current situation of recovery and utilization of waste acid from titanium dioxide have been reviewed, mainly focusing on the application of waste acid in extracting metal elements, Current situation of resource utilization of waste acid from titanium Disclosed is a process for treating waste sulfuric acid generated from a process for producing titanium dioxide pigment by treating titanium slag with sulfuric acid The waste acid is treated in a first step with a calciumcontaining material to produce a gypsum suspension which is filtered and from which a filtrate is recovered The filtrate is treated in a second step with a calcium Treatment of waste sulfuric acid by gypsum precipitation in a titanium 2017年7月1日 In this study, the authors report the synthesis of titanium dioxide (TiO 2 ) nanostructures by an ultrasoundassisted method using titanium dioxide particles and sulfuric acidThe synthesis of TiO 2 nanoparticles using sulfuric acid method
Recovery of scandium from spent sulfuric acid solution in titanium
Zou et al (2020) utilized 15% D2EHPA + 15% N 1923 to extract Sc from a sulfuric acid solution of titanium dioxide, in which the acid concentration was maintained below 05 mol/L, and three temperature to create titanium tetrachloride (TiCl 4) Secondary oxidation removes the chlorine gas and creates titanium dioxide (TiO 2) pH measurement is not used in the initial phases of the chloride process; however, it is used later on in downstream surface treatment of TiO 2 The sulfate process relies on sulfuric acid (H 2 SO 4) to leachApplication Note Titanium Dioxide Sulfate Process Barben The waste acid generated during the production of titanium dioxide contained a high proportion of ferrous ions Comprehensive utilization of these waste acid involves the recovery of sulfuric acid and iron However, traditional methods faced difficulty in attaining the desired outcome Therefore, this study proposed a treatment process primarily based on membrane electrolysisRecovery of sulfuric acid and iron from titanium dioxide waste acid 2015年11月20日 Ferrous sulfate waste has become a bottleneck in the sustainable development of the titanium dioxide industry in China In this study, we propose a new method for the reductive decomposition of A sustainable process to utilize ferrous sulfate waste from titanium
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Titanium Dioxide (Tio₂) and Its Applications ScienceDirect
2021年1月1日 In addition, the first pigments (in the anatase form) were produced by mixing ilmenite (FeTiO 3) with sulfuric acid, carrying out a hydrolysis process by adding calcium or barium sulfateThus, in 1916, the Titanium Pigment Corporation of Niagara Falls, New York, and the Titan Co AS, Norway, simultaneously began the commercial production of titanium dioxide 2023年8月1日 For every 1 metric ton of titanium dioxide produced by the sulfuric acid process, an average of 8–10 metric tons of sulfuric acid waste with a concentration of about 20% and 3–4 metric tons of titaniumcontaining waste acid is generated Table 4 shows the content of typical acid metals from titanium dioxide waste (Qiu et al, 2018)Sustainable recovery of titanium from secondary resources: A review2020年4月1日 In order to concentrate the diluted sulfuric acid from the titanium dioxide (TiO 2) production of sulphate process, a new concentration process was proposed by coupling chemical dehydration and multieffect evaporationThe ferrous sulfate monohydrate (FeSO 4 H 2 O), as the dehydrant, was added to the diluted sulfuric acid to form ferrous sulfate heptahydrate Chemical dehydration coupling multieffect evaporation to treat waste 2020年5月27日 Currently, the global yearly production of titanium dioxide is approximately 6 million tons, and its demand grows continuously by an average of 25% per year []Ilmenite is a widespread raw material for the production of titanium dioxide by both the chloride [2,3,4] and sulfate methodsSulfuric acid leaching of mineral rocks and concentrates containing titanium is Mechanism, Thermodynamics and Kinetics of Rutile Leaching Process
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Separation and recovery of scandium and titanium from spent sulfuric
2018年6月1日 Scandium has been mainly recovered from byproducts including residues, tailings and waste liquors in the production of other metals such as rare earths, uranium, titanium, tungsten (Wang et al, 2011), magnesium, aluminium, and iron scrap (Ditze and Kongolo, 1997)Among them, the spent hydrolyzed sulfuric acid in the process of titanium dioxide 2024年10月22日 More than 90% amount of titanium dioxide (TiO 2) in China is produced through the sulfuric acid method due to the mature processes, low cost, and lowquality requirements of raw material quality 1 Onestep synthesis of short columnar αcalcium sulfate NatureStep 5: Cooling and Storage The diluted sulfuric acid is then cooled and transferred to storage tanks In the case of double contact double absorption process, SO 3 is taken into concentrated sulfuric acid and creates oleum in Sulfuric Acid Production by DCDA Process Gas ore contains 90 to 97% titanium dioxide, the volume of waste is low, consisting primarily of iron and titanium chlorides with minor amounts of vanadium chloride In the sulfate process a lower grade ore with a titanium dioxide content of 50 to 72% is used The major impurity is iron The ore reacts with sulfuric acid to form a titanium sulfate Neutralization of Sulfate Process Titanium Dioxide Wastes with
CNA Method for concentrating titanium dioxide waste acid
The invention relates to the technical field of sulfuric acid process titanium dioxide waste acid concentration, and discloses a sulfuric acid process titanium dioxide waste acid concentration method, which adopts lowtemperature evaporation concentration, wherein the material temperature is controlled not to exceed 60 ℃ in the concentration process, ferrous sulfate is 2018年1月31日 The general titanium dioxide output capacity could reach 35 million tons, most of which are mainly manufactured in terms of sulfuric acid method titanium dioxide Plenty of waste acid and waste water are generated during the sulfuric acid method production, if adopt the neutralization method there will be bulk waste plaster precipitated and Titanium dioxide waste acid treatment system Integrated Semantic Scholar extracted view of "Recovery of sulfuric acid and iron from titanium dioxide waste acid by membrane electrolysis combined with selective electrodialysis" by Fei Han et al Semantic Scholar extracted view of "Recovery of sulfuric acid and iron from titanium dioxide waste Water treatment sludge from coagulation process in Recovery of sulfuric acid and iron from titanium dioxide waste acid 2020年5月27日 Rutile decomposition by sulfuric acid, including the formation of two salts, Ti(SO4)2/TiOSO4, is thermodynamically modelled It is shown that TiO2 can spontaneously dissolve in H2SO4 solutionsMechanism, Thermodynamics and Kinetics of Rutile Leaching Process
Separation and recovery of scandium and titanium from spent sulfuric
2018年1月31日 One of the resources of scandium is hydrolyzed sulfuric acid, which is generated in the production of titanium dioxide [ [36], [37]] The authors studied the separation and recovery of Sc and Ti 2006年1月1日 The electrochemical behavior and passive film properties of Hastelloy C22 alloy, lasercladding C22 coating, and Ti–6Al–4V alloy in sulfuric acid dewpoint corrosion environment were Corrosion of Titanium and Its Alloys in Sulfuric Acid in the Presence 2023年2月1日 However, the VTi magnetite in the Panzhihua–Xichang area contains high concentrations of Si, Ca, and Mg Thus, the titaniumbearing electric furnace slag (TEFS) produced via the direct reductionelectric furnace smelting method thus contains excessive impurities, making the slag difficult to utilize [11], [12]Research on the recovery of Ti from Innovative application of twostage sulfuric acid leaching for 2008年10月1日 The leaching process is based on the extraction of this element with diluted sulfuric acid from red mud under atmospheric conditions and without using any preliminary treatment(PDF) Titanium leaching from red mud by diluted sulfuric acid