CN102502811A - Continuous acidolysis method for preparing titanium white with sulfuric acid process - Google Patents
Continuous acidolysis method for preparing titanium white with sulfuric acid process Download PDFInfo
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- CN102502811A CN102502811A CN2011103488085A CN201110348808A CN102502811A CN 102502811 A CN102502811 A CN 102502811A CN 2011103488085 A CN2011103488085 A CN 2011103488085A CN 201110348808 A CN201110348808 A CN 201110348808A CN 102502811 A CN102502811 A CN 102502811A
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Abstract
The invention discloses a continuous acidolysis method for preparing titanium white with a sulfuric acid process. The method comprises the following steps of: starting a tail gas treating system, and uniformly mixing concentrated sulfuric acid with titanium ore powder in the mass ratio of (1.3-1.7):1 between pure sulfuric acid in the concentrated sulfuric acid and the titanium ore powder at the mixing temperature of lower than 35 DEG C to obtain an acid ore mixed solution; injecting the acid ore mixed solution and reaction starting water into a reaction container, controlling the injection speed of the acid ore mixed solution at 3-6 m<3>/h, and adjusting the injection speed of the reaction starting water at the temperature of 140-170 DEG C in a reactor to obtain a particulate solid phase substance; and adding the particulate solid phase substance and water or waste acid into a dissolving tank for dissolving, and ensuring that the F value of a titanium oxysulfate titanium solution is 1.75-1.85 and the titanium solution stability is over 500ml by adjusting the flow of dissolved water to obtain a titanium oxysulfate titanium solution. By controlling the mixture ratio of the concentrated sulfuric acid and the titanium ore powder in an acidolysis main reaction and the state and the temperature of the main reaction, a reaction process is very stable, the acidolysis quality is enhanced, solid-phase substance particles obtained after acidolysis are uniform and fine, and dissolving is quicker and more complete, so that the yield and output of acidolysis are increased.
Description
Technical field:
The present invention relates to sulfuric acid legal system titanium white, be specifically related to a kind of continuous acidolysis method of sulfuric acid legal system titanium white.
Background technology:
Titanium White Production By Sulfuric Acid Process is according to the sulfuric acid concentration of participating in reaction and the state of final reacting product, and acidolysis is divided into three kinds of liquid phase method, solid phase method and two phase processes.At present, domestic what generally adopt is solid phase method,, is added water extraction then and obtains titanyl sulfate titanium liquid greater than 80% sulfuric acid and perovskite powder rapid, the violent generation solid formation that reacts in the acidolysis pot by concentration, reacts to be interrupted and carries out.But the solid phase method main reaction is too violent, and abrupt release goes out a large amount of SO
3, SO
2Gas, even have the phenomenon of emitting pot, be difficult to its control, for production has brought great unsafe factor; A large amount of gas moment emits and can not get processing timely and can cause topsoil.Though domestic a lot of producer has dropped into substantial contribution and handled, still can not solve topsoil and potential potential safety hazard that the acidolysis main reaction brings.Temperature in the acidolysis reaction process, acid concentration change the stability of leaching time, acidolysis rate and the titanyl sulfate solution that can have influence on solid formation again.
Summary of the invention:
The continuous acidolysis method that the purpose of this invention is to provide a kind of sulfuric acid legal system titanium white; Thereby solve the atmosphere polluting problem that present domestic sulfuric acid legal system titanium white brings when acidolysis reaction; And the state of control acidolysis main reaction that can be accurate, stable; Improve the stability of acidolysis rate and titanyl sulfate solution, eliminate the potential safety hazard that acidolysis reaction brings, safe and reliable Working environment is provided.
The continuous acidolysis method of sulfuric acid legal system titanium white of the present invention is characterized in that, may further comprise the steps:
(a) opening exhaust treatment system, is 1.3～1.7: 1 by the acid of the bright sulfur in the vitriol oil with the perovskite powder mass ratio, and the vitriol oil and perovskite powder are mixed, and mixing temperature is lower than 35 ℃, obtains sour ore deposit mixed solution;
(b) sour ore deposit mixed solution and reaction are started water and inject in the reaction vessel, sour ore deposit mixed solution injection speed is 3～6m
3/ h is the injection speed that 140～170 ℃ of adjustment reactions that are as the criterion start water with reactor temperature, obtains the particle solid formation;
(c) particle solid formation and water or spent acid are joined in the lixator dissolve, guarantee that through the flow of regulating dissolving water the F value of titanyl sulfate titanium liquid is 1.75～1.85, titanium liquid stability＞500ml, and obtain titanyl sulfate titanium liquid.
Titanyl sulfate titanium liquid obtains metatitanic acid through the hydrolysis of routine, thereby again metatitanic acid is made white titanium pigment through washing, calcining.
Described vitriol oil preferably sulfuric acid massfraction is 98% the vitriol oil.
Described sour ore deposit mixed solution injection speed is preferably 5m
3/ h.
The injection speed that described reaction starts water is preferably 0.5～2m
3/ h.
The present invention overcomes the shortcoming of prior art; The vitriol oil and the ratio of mixture of perovskite powder and the state and the temperature of main reaction through control acidolysis main reaction; Make reaction process very steadily, improved the quality of acidolysis, the solid formation uniform particles after the acidolysis is tiny; Dissolved is more thorough sooner, thereby has improved the yield and the output of acidolysis.Handle tail gas through exhaust treatment system, reached environmental emission standard through the tail gas that washs, the robotization control of height drops into the Working environment that safety and comfort are provided for the staff.
Embodiment:
Following examples are to further specify of the present invention, rather than limitation of the present invention.
Embodiment 1
Open exhaust treatment system, treat that exhaust treatment system works well after, with the 4.62t mass percent be 98% the vitriol oil and 3.3t perovskite powder being lower than under 35 ℃, in the high efficient mixed whisking appliance, mix, obtain sour ore deposit mixed solution, again with 5m
3The flow injecting reactor of/h.Start the adding speed of water with the be as the criterion adjustment reaction of 140 ℃ of top temperatures in the reactor drum, speed is at 0.5～2m
3Change obtains the thinner solid formation of particle in the/h.Solid formation is joined in the lixator and dissolves with dissolving water, guarantee that through the flow of regulating dissolving water the F value of titanyl sulfate titanium liquid is 1.75～1.85 and stability＞500ml, and obtain titanyl sulfate titanium liquid.Titanyl sulfate titanium liquid obtains metatitanic acid through the hydrolysis of routine, thereby again metatitanic acid is made white titanium pigment through washing, calcining.
Tail gas sulphur content after exhaust treatment system is handled is lower than the environmental impact assessment requirement, and entire reaction course is steadily carried out, and the solid formation uniform particles after the acidolysis is tiny, the yield 91.68% of acidolysis, titanyl sulfate titanium liquid stability＞500ml.
Embodiment 2:
Open exhaust treatment system, treat that exhaust treatment system works well after, be that 98% the vitriol oil and 3.3t perovskite powder are being lower than under 35 ℃ with the 4.62t mass percent, in the high efficient mixed whisking appliance, mix and obtain sour ore deposit mixed solution, and with 5m
3The flow injecting reactor of/h.Start the adding speed of water with the be as the criterion adjustment reaction of 150 ℃ of top temperatures in the reactor drum, the adding speed that starts water generally is at 0.5～2m
3Change obtains the thinner solid formation of particle in the/h.Solid formation is joined dissolving in the lixator with dissolving water (available spent acid), guarantee that through the flow of regulating dissolving water the F value of titanyl sulfate titanium liquid is 1.75～1.85 and stability＞500ml, and obtain titanyl sulfate titanium liquid.Titanyl sulfate titanium liquid obtains metatitanic acid through the hydrolysis of routine, thereby again metatitanic acid is made white titanium pigment through washing, calcining.
Tail gas sulphur content after exhaust treatment system is handled is lower than the environmental impact assessment requirement, and entire reaction course is steadily carried out, and the solid formation uniform particles after the acidolysis is tiny, the yield 93.32% of acidolysis, titanyl sulfate titanium liquid stability＞500ml.
Embodiment 3:
Open exhaust treatment system, treat that exhaust treatment system works well after, with the 4.62t mass percent be 98% the vitriol oil and 3.3t perovskite powder being lower than under 35 ℃, in the high efficient mixed whisking appliance, mix, obtain sour ore deposit mixed solution, again with 5m
3The flow injecting reactor of/h.Start the adding speed of water with the be as the criterion adjustment reaction of 160 ℃ of top temperatures in the reactor drum, the adding speed that starts water generally is at 0.5～2m
3Change obtains the thinner solid formation of particle in the/h.Solid formation is joined dissolving in the lixator with dissolving water (available spent acid), guarantee that through the flow of regulating dissolving water the F value of titanyl sulfate titanium liquid is 1.75～1.85 and stability＞500ml, and obtain titanyl sulfate titanium liquid.Titanyl sulfate titanium liquid obtains metatitanic acid through the hydrolysis of routine, thereby again metatitanic acid is made white titanium pigment through washing, calcining.
Tail gas sulphur content after exhaust treatment system is handled is lower than the environmental impact assessment requirement, and entire reaction course is steadily carried out, and the solid formation uniform particles after the acidolysis is tiny, the yield 94.86% of acidolysis, titanyl sulfate titanium liquid stability＞500ml.
Embodiment 4:
Open exhaust treatment system, treat that exhaust treatment system works well after, be that 98% the vitriol oil and 3.3t perovskite powder are being lower than under 35 ℃ with the 4.62t mass percent, in the high efficient mixed whisking appliance, mix and obtain sour ore deposit mixed solution, again with 5m
3The flow injecting reactor of/h.Start the adding speed of water with the be as the criterion adjustment reaction of 170 ℃ of top temperatures in the reactor drum, the adding speed that starts water generally is at 0.5～2m
3Change obtains the thinner solid formation of particle in the/h.Solid formation is joined dissolving in the lixator with dissolving water (available spent acid), guarantee that through the flow of regulating dissolving water the F value of titanyl sulfate titanium liquid is 1.75～1.85 and stability＞500ml, and obtain titanyl sulfate titanium liquid.Titanyl sulfate titanium liquid obtains metatitanic acid through the hydrolysis of routine, thereby again metatitanic acid is made white titanium pigment through washing, calcining.
Tail gas sulphur content after exhaust treatment system is handled is lower than the environmental impact assessment requirement, and entire reaction course is steadily carried out, and the solid formation uniform particles after the acidolysis is tiny, the yield 95.64% of acidolysis, titanyl sulfate titanium liquid stability 410ml.
Embodiment 5:
Open exhaust treatment system, treat that exhaust treatment system works well after, be that 98% the vitriol oil and 3.3t perovskite powder are being lower than under 35 ℃ with the 4.95t mass percent, in the high efficient mixed whisking appliance, mix and obtain sour ore deposit mixed solution, again with 3m
3The flow injecting reactor of/h.Start the adding speed of water with the be as the criterion adjustment reaction of 140 ℃ of top temperatures in the reactor drum, the adding speed that starts water generally is at 0.5～2m
3Change obtains the thinner solid formation of particle in the/h.Solid formation is joined dissolving in the lixator with dissolving water (available spent acid), guarantee that through the flow of regulating dissolving water the F value of titanyl sulfate titanium liquid is 1.75～1.85 and stability＞500ml, and obtain titanyl sulfate titanium liquid.Titanyl sulfate titanium liquid obtains metatitanic acid through the hydrolysis of routine, thereby again metatitanic acid is made white titanium pigment through washing, calcining.
Tail gas sulphur content after exhaust treatment system is handled is lower than the environmental impact assessment requirement, and entire reaction course is steadily carried out, and the solid formation uniform particles after the acidolysis is tiny, the yield 94.31% of acidolysis, titanyl sulfate titanium liquid stability＞500ml.
Embodiment 6:
Open exhaust treatment system, treat that exhaust treatment system works well after, be that 98% the vitriol oil and 3.3t perovskite powder are being lower than under 35 ℃ with the 4.95t mass percent, in the high efficient mixed whisking appliance, mix and obtain sour ore deposit mixed solution, again with 5m
3The flow injecting reactor of/h.Start the adding speed of water with the be as the criterion adjustment reaction of 150 ℃ of top temperatures in the reactor drum, the adding speed that starts water generally is at 0.5～2m
3Change obtains the thinner solid formation of particle in the/h.Solid formation is joined dissolving in the lixator with dissolving water (available spent acid), guarantee that through the flow of regulating dissolving water the F value of titanyl sulfate titanium liquid is 1.75～1.85 and stability＞500ml, and obtain titanyl sulfate titanium liquid.Titanyl sulfate titanium liquid obtains metatitanic acid through the hydrolysis of routine, thereby again metatitanic acid is made white titanium pigment through washing, calcining.
Tail gas sulphur content after exhaust treatment system is handled is lower than the environmental impact assessment requirement, and entire reaction course is steadily carried out, and the solid formation uniform particles after the acidolysis is tiny, the yield 95.62% of acidolysis, titanyl sulfate titanium liquid stability＞500ml.
Embodiment 7:
Open exhaust treatment system, treat that exhaust treatment system works well after, be that 98% the vitriol oil and 3.3t perovskite powder are being lower than under 35 ℃ with the 4.95t mass percent, in the high efficient mixed whisking appliance, mix and obtain sour ore deposit mixed solution, again with 6m
3The flow injecting reactor of/h.Start the adding speed of water with the be as the criterion adjustment reaction of 160 ℃ of top temperatures in the reactor drum, the adding speed that starts water generally is at 0.5～2m
3Change obtains the thinner solid formation of particle in the/h.Solid formation is joined dissolving in the lixator with dissolving water (available spent acid), guarantee that through the flow of regulating dissolving water the F value of titanyl sulfate titanium liquid is 1.75～1.85 and stability＞500ml, and obtain titanyl sulfate titanium liquid.Titanyl sulfate titanium liquid obtains metatitanic acid through the hydrolysis of routine, thereby again metatitanic acid is made white titanium pigment through washing, calcining.
Tail gas sulphur content after exhaust treatment system is handled is lower than the environmental impact assessment requirement, and entire reaction course is steadily carried out, and the solid formation uniform particles after the acidolysis is tiny, the yield 98.59% of acidolysis, titanyl sulfate titanium liquid stability＞500ml.
Embodiment 8:
Open exhaust treatment system, treat that exhaust treatment system works well after, be that 98% the vitriol oil and 3.3t perovskite powder are being lower than under 35 ℃ with the 5.72t mass percent, in the high efficient mixed whisking appliance, mix and obtain sour ore deposit mixed solution, again with 5m
3The flow injecting reactor of/h.Start the adding speed of water with the be as the criterion adjustment reaction of 170 ℃ of top temperatures in the reactor drum, the adding speed that starts water generally is at 0.5～2m
3Change obtains the thinner solid formation of particle in the/h.Solid formation is joined dissolving in the lixator with dissolving water (available spent acid), guarantee that through the flow of regulating dissolving water the F value of titanyl sulfate titanium liquid is 1.75～1.85 and stability＞500ml, and obtain titanyl sulfate titanium liquid.Titanyl sulfate titanium liquid obtains metatitanic acid through the hydrolysis of routine, thereby again metatitanic acid is made white titanium pigment through washing, calcining.
Tail gas sulphur content after exhaust treatment system is handled is lower than the environmental impact assessment requirement, and entire reaction course is steadily carried out, and the solid formation uniform particles after the acidolysis is tiny, the yield 98.31% of acidolysis, titanyl sulfate titanium liquid stability 425ml.
Embodiment 9:
Open exhaust treatment system, treat that exhaust treatment system works well after, be that 98% the vitriol oil and 3.3t perovskite powder are being lower than under 35 ℃ with the 5.28t mass percent, in the high efficient mixed whisking appliance, mix and obtain sour ore deposit mixed solution, again with 5m
3The flow injecting reactor of/h.Start the adding speed of water with the be as the criterion adjustment reaction of 140 ℃ of top temperatures in the reactor drum, the adding speed that starts water generally is at 0.5～2m
3Change obtains the thinner solid formation of particle in the/h.Solid formation is joined dissolving in the lixator with dissolving water (available spent acid), guarantee that through the flow of regulating dissolving water the F value of titanyl sulfate titanium liquid is 1.75～1.85 and stability＞500ml, and obtain titanyl sulfate titanium liquid.Titanyl sulfate titanium liquid obtains metatitanic acid through the hydrolysis of routine, thereby again metatitanic acid is made white titanium pigment through washing, calcining.
Tail gas sulphur content after exhaust treatment system is handled is lower than the environmental impact assessment requirement, and entire reaction course is steadily carried out, and the solid formation uniform particles after the acidolysis is tiny, the yield 94.52% of acidolysis, titanyl sulfate titanium liquid stability＞500ml.
Embodiment 10:
Open exhaust treatment system, treat that exhaust treatment system works well after, be that 98% the vitriol oil and 3.3t perovskite powder are being lower than under 35 ℃ with the 5.28t mass percent, in the high efficient mixed whisking appliance, mix and obtain sour ore deposit mixed solution, again with 5m
3The flow injecting reactor of/h.Start the adding speed of water with the be as the criterion adjustment reaction of 150 ℃ of top temperatures in the reactor drum, the adding speed that starts water generally is at 0.5～2m
3Change obtains the thinner solid formation of particle in the/h.Solid formation is joined dissolving in the lixator with dissolving water (available spent acid), guarantee that through the flow of regulating dissolving water the F value of titanyl sulfate titanium liquid is 1.75～1.85 and stability＞500ml, and obtain titanyl sulfate titanium liquid.Titanyl sulfate titanium liquid obtains metatitanic acid through the hydrolysis of routine, thereby again metatitanic acid is made white titanium pigment through washing, calcining.
Tail gas sulphur content after exhaust treatment system is handled is lower than the environmental impact assessment requirement, and entire reaction course is steadily carried out, and the solid formation uniform particles after the acidolysis is tiny, the yield 96.05% of acidolysis, titanyl sulfate titanium liquid stability＞500ml.
Embodiment 11:
Open exhaust treatment system, treat that exhaust treatment system works well after, be that 98% the vitriol oil and 3.3t perovskite powder are being lower than under 35 ℃ with the 5.28t mass percent, in the high efficient mixed whisking appliance, mix sour ore deposit mixed solution, again with 5m
3The flow injecting reactor of/h.Start the adding speed of water with the be as the criterion adjustment reaction of 160 ℃ of top temperatures in the reactor drum, the adding speed that starts water generally is at 0.5～2m
3Change obtains the thinner solid formation of particle in the/h.Solid formation is joined dissolving in the lixator with dissolving water (available spent acid), guarantee that through the flow of regulating dissolving water the F value of titanyl sulfate titanium liquid is 1.75～1.85 and stability＞500ml, and obtain titanyl sulfate titanium liquid.Titanyl sulfate titanium liquid obtains metatitanic acid through the hydrolysis of routine, thereby again metatitanic acid is made white titanium pigment through washing, calcining.
Tail gas sulphur content after exhaust treatment system is handled is lower than the environmental impact assessment requirement, and entire reaction course is steadily carried out, and the solid formation uniform particles after the acidolysis is tiny, the yield 98.55% of acidolysis, titanyl sulfate titanium liquid stability＞500ml.
Embodiment 12:
Open exhaust treatment system, treat that exhaust treatment system works well after, be that 98% the vitriol oil and 3.3t perovskite powder are being lower than under 35 ℃ with the 4.38t mass percent, in the high efficient mixed whisking appliance, mix and obtain sour ore deposit mixed solution, again with 5m
3The flow injecting reactor of/h.Start the adding speed of water with the be as the criterion adjustment reaction of 170 ℃ of top temperatures in the reactor drum, the adding speed that starts water generally is at 0.5～2m
3Change obtains the thinner solid formation of particle in the/h.Solid formation is joined dissolving in the lixator with dissolving water (available spent acid), guarantee that through the flow of regulating dissolving water the F value of titanyl sulfate titanium liquid is 1.75～1.85 and stability＞500ml, and obtain titanyl sulfate titanium liquid.Titanyl sulfate titanium liquid obtains metatitanic acid through the hydrolysis of routine, thereby again metatitanic acid is made white titanium pigment through washing, calcining.
Tail gas sulphur content after exhaust treatment system is handled is lower than the environmental impact assessment requirement, and entire reaction course is steadily carried out, and the solid formation uniform particles after the acidolysis is tiny, the yield 89.77% of acidolysis, titanyl sulfate titanium liquid stability＞500ml.
Claims (4)
1. the continuous acidolysis method of a sulfuric acid legal system titanium white is characterized in that, may further comprise the steps:
(a) opening exhaust treatment system, is 1.3～1.7: 1 by the acid of the bright sulfur in the vitriol oil with the perovskite powder mass ratio, and the vitriol oil and perovskite powder are mixed, and mixing temperature is lower than 35 ℃, obtains sour ore deposit mixed solution;
(b) sour ore deposit mixed solution and reaction are started water and inject in the reaction vessel, sour ore deposit mixed solution injection speed is 3～6m
3/ h is the injection speed that 140～170 ℃ of adjustment reactions that are as the criterion start water with reactor temperature, obtains the particle solid formation;
(c) particle solid formation and water or spent acid are joined in the lixator dissolve, guarantee that through the flow of regulating dissolving water the F value of titanyl sulfate titanium liquid is 1.75～1.85, titanium liquid stability＞500ml, and obtain titanyl sulfate titanium liquid.
2. the continuous acidolysis method of sulfuric acid legal system titanium white according to claim 1 is characterized in that, the described vitriol oil is 98% the vitriol oil for the sulfuric acid massfraction.
3. the continuous acidolysis method of sulfuric acid legal system titanium white according to claim 1 is characterized in that, described sour ore deposit mixed solution injection speed is 5m3/h.
4. the continuous acidolysis method of sulfuric acid legal system titanium white according to claim 1 is characterized in that, the injection speed that described reaction starts water is 0.5～2m
3/ h.
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Cited By (11)
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| CN103130269A (en) * | 2013-04-01 | 2013-06-05 | 济南裕兴化工有限责任公司 | Black titanium liquid sediment purification device in production of titanium dioxide |
| CN103359784A (en) * | 2013-08-06 | 2013-10-23 | 石海东 | Continuous self-flow acidolysis technology for sulfuric-acid-method titanium white production and device thereof |
| CN104843784A (en) * | 2015-05-21 | 2015-08-19 | 贵州东华工程股份有限公司 | Method and equipment for carrying out acidolysis in titanium white production by sulfuric acid process |
| CN104843785A (en) * | 2015-05-21 | 2015-08-19 | 贵州东华工程股份有限公司 | Titanium dioxide continuous acidolysis method as well as mineral acid pre-mixing tank and reactor feeding tank applied to method |
| CN107500346A (en) * | 2017-09-01 | 2017-12-22 | 河北麦森钛白粉有限公司 | A kind of method for preparing raw material for decorating base paper titanium white production |
| CN107555474A (en) * | 2017-09-06 | 2018-01-09 | 广西雅照钛白有限公司 | A kind of throwing ore deposit method for sulfuric acid method titanium pigment hydrolysis procedure |
| CN109085165A (en) * | 2018-07-10 | 2018-12-25 | 广西蓝星大华化工有限责任公司 | A kind of improved analysis method of titanium liquid stability |
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| CN103130269A (en) * | 2013-04-01 | 2013-06-05 | 济南裕兴化工有限责任公司 | Black titanium liquid sediment purification device in production of titanium dioxide |
| CN103359784A (en) * | 2013-08-06 | 2013-10-23 | 石海东 | Continuous self-flow acidolysis technology for sulfuric-acid-method titanium white production and device thereof |
| CN103359784B (en) * | 2013-08-06 | 2015-06-17 | 石海东 | Continuous self-flow acidolysis technology for sulfuric-acid-method titanium white production and device thereof |
| CN104843784A (en) * | 2015-05-21 | 2015-08-19 | 贵州东华工程股份有限公司 | Method and equipment for carrying out acidolysis in titanium white production by sulfuric acid process |
| CN104843785A (en) * | 2015-05-21 | 2015-08-19 | 贵州东华工程股份有限公司 | Titanium dioxide continuous acidolysis method as well as mineral acid pre-mixing tank and reactor feeding tank applied to method |
| CN107500346A (en) * | 2017-09-01 | 2017-12-22 | 河北麦森钛白粉有限公司 | A kind of method for preparing raw material for decorating base paper titanium white production |
| CN107555474A (en) * | 2017-09-06 | 2018-01-09 | 广西雅照钛白有限公司 | A kind of throwing ore deposit method for sulfuric acid method titanium pigment hydrolysis procedure |
| CN109085165A (en) * | 2018-07-10 | 2018-12-25 | 广西蓝星大华化工有限责任公司 | A kind of improved analysis method of titanium liquid stability |
| CN112320841A (en) * | 2020-11-11 | 2021-02-05 | 安徽迪诺环保新材料科技有限公司 | Continuous acidolysis production process for titanium dioxide by sulfuric acid process |
| CN114084903A (en) * | 2021-12-20 | 2022-02-25 | 攀钢集团重庆钛业有限公司 | Continuous acidolysis method for titanium concentrate |
| CN114920287A (en) * | 2022-07-07 | 2022-08-19 | 华东理工大学 | Method for preparing titanyl sulfate by continuous acidolysis of ilmenite |
| CN115321592A (en) * | 2022-09-21 | 2022-11-11 | 中国有色集团（广西）平桂飞碟股份有限公司 | Pretreatment method capable of improving quality of titanium acidolysis solution in continuous acidolysis reaction |
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