CN104445426B - The copperas solution that a kind of bittern water and production titanium dioxide obtain produces the method for iron oxide yellow and iron oxide red - Google Patents
The copperas solution that a kind of bittern water and production titanium dioxide obtain produces the method for iron oxide yellow and iron oxide red Download PDFInfo
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- CN104445426B CN104445426B CN201410699515.5A CN201410699515A CN104445426B CN 104445426 B CN104445426 B CN 104445426B CN 201410699515 A CN201410699515 A CN 201410699515A CN 104445426 B CN104445426 B CN 104445426B
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- iron oxide
- oxide yellow
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Abstract
The invention provides a kind of bittern water and produce the method that the copperas solution that obtains of titanium dioxide produces iron oxide yellow and iron oxide red, relate to bittern chemical technology field, the method that the copperas solution that bittern water provided by the invention and production titanium dioxide obtain produces iron oxide yellow and iron oxide red comprises steps such as the impurity removings in bittern water and copperas solution, when equal iron oxide yellow or iron oxide red preparation amount, the copperas solution that bittern water provided by the invention and production titanium dioxide obtain produces the method for iron oxide yellow and iron oxide red relative to traditional wet method iron oxide yellow and iron oxide yellow, its whole production process can shorten 2 ~ 3 hours, thus, the production efficiency of enterprise obtains and significantly improves, the economic benefit produced clearly.
Description
Technical field
The present invention relates to bittern chemical technology field, the copperas solution that particularly a kind of bittern water and production titanium dioxide obtain produces the method for iron oxide yellow and iron oxide red.
Background technology
With ferrous sulfate (FeSO
47H
2o) traditional method of iron oxide red processed (or iron oxide yellow) has two large classes: one is dry method, and two is wet methods.
The common step of dry method iron oxide red is that ferrous drying and dewatering is become ferrous sulfate monohydrate (FeSO
4h
2o), then at 800 DEG C, calcining generates crude product iron oxide red, then washing and drying, pulverizing and finished product, waste gas SO3 is used for Sulphuric acid.Aforesaid method simple process, but equipment manufacturing cost is high, and energy consumption is also higher.
The equipment that wet method iron oxide yellow and iron oxide red are used is complicated not as dry method, the cost of equipment is relatively cheaply many, in prior art, wet method iron oxide red is generally with in ammonia and more, and its concrete steps are first neutralized by ferrous sulfate ammonia, generates ferrous hydroxide precipitation, then pass into atmospheric oxidation, add crystal seed, ironic hydroxide precipitating, on crystal seed, obtains crude product iron oxide yellow, then after filtration, washing, dry, pulverize and iron oxide yellow finished product, finally by hyperthermia drying, iron oxide red finished product can be obtained.Better, energy consumption is relatively low, but the reaction times is oversize for the iron oxide yellow that the method obtains and iron oxide red quality product.
Summary of the invention
For above-mentioned wet method iron oxide yellow and iron oxide red reaction times long defect, the present invention improve a kind of reaction times shorter with bittern water and produce the method that copperas solution that titanium dioxide obtains produces iron oxide yellow and iron oxide red.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme: the copperas solution that a kind of bittern water and production titanium dioxide obtain produces the method for iron oxide yellow, comprises the following steps:
Step 1, removes the impurity in bittern water and copperas solution;
The impurity removed is needed to be MgCl in bittern water
2, MgSO
4, the impurity-removing method of bittern water is: first in bittern water, add bicarbonate of ammonia, can generate MgCO
3precipitation, the MgCO then will generated
3sedimentation and filtration removes, and namely completes the removal of impurities of bittern water;
The impurity removed is needed to be titanium sulfate and sulfuric acid in the copperas solution that production titanium dioxide obtains, the method of described copperas solution removal of impurities is: first in described ferrous sulfate aqueous solution, add iron powder, ferric iron back in ferrous sulfate aqueous solution is become ferrous iron by the part in the iron powder added, another part and sulfuric acid reaction generate ferrous sulfate, along with described iron powder is continuous and sulfuric acid reaction, the pH value of described copperas solution constantly raises, titanium sulfate is wherein hydrolyzed into metatitanic acid and separates out, finally the metatitanic acid of precipitation is crossed and filter, namely the removal of impurities of copperas solution is completed,
Step 2, mixes the bittern water after removal of impurities and copperas solution, adds bicarbonate of ammonia simultaneously and constantly stirs, and obtains iron protocarbonate precipitation;
Step 3, by the iron protocarbonate sedimentation and filtration that obtains in step 2 out, obtains iron protocarbonate filter residue, is then cleaned up by the iron protocarbonate filter residue water obtained;
Step 4, is added to the water mixing by the iron protocarbonate filter residue after cleaning up in step 3, then adds hydrogen peroxide, ferric oxide crystal seed and potassium permanganate, blasts air and continuous stirred solution simultaneously, obtains iron oxide yellow precipitation;
Step 5, by the iron oxide yellow sedimentation and filtration obtained in step 4, washing, obtains crude product iron oxide yellow;
Step 6, dries the crude product iron oxide yellow obtained in step 5, and bake out temperature controls, at 130 DEG C ~ 150 DEG C, namely to obtain iron oxide yellow product after oven dry;
Above steps is all carry out at ambient pressure.
As another aspect of the present invention, the present invention also provides a kind of bittern water and produces the method for the copperas solution production iron oxide red that titanium dioxide obtains, and comprises the following steps:
Step 1, first obtains iron oxide yellow product by method according to claim 1;
Step 2, dries iron oxide yellow product obtained in step 1, is removed by the crystal water in iron oxide yellow product and can obtain iron oxide red product at the temperature of 180 DEG C ~ 190 DEG C;
Above steps is all carry out at ambient pressure.
The beneficial effect that the present invention obtains is: when equal iron oxide yellow or iron oxide red preparation amount, the copperas solution that bittern water provided by the invention and production titanium dioxide obtain produces the method for iron oxide yellow and iron oxide red relative to traditional wet method iron oxide yellow and iron oxide yellow, its whole production process can shorten 2 ~ 3 hours, thus, the production efficiency of enterprise obtains and significantly improves, and the economic benefit of generation clearly.
Embodiment
As one aspect of the present invention, the copperas solution that a kind of bittern water and production titanium dioxide obtain produces the method for iron oxide yellow, comprises the following steps:
Step 1, removes the impurity in bittern water and copperas solution;
The impurity removed is needed to be MgCl in bittern water
2, MgSO
4, the impurity-removing method of bittern water is: first in bittern water, add bicarbonate of ammonia, can generate MgCO
3precipitation, the MgCO then will generated
3sedimentation and filtration removes, and namely completes the removal of impurities of bittern water;
The reaction formula of the chemical reaction occurred in bittern water dedoping step mainly comprises:
MgCl
2+2NH
4HCO
3→MgCO
3↓+2NH
4Cl+H
2O+CO
2↑
MgSO
4+2NH
4HCO
3→MgCO
3↓+2(NH
4)
2SO
4+H
2O+CO
2↑
The impurity removed is needed to be titanium sulfate and sulfuric acid in the copperas solution that production titanium dioxide obtains, the method of described copperas solution removal of impurities is: first in described ferrous sulfate aqueous solution, add iron powder, ferric iron back in ferrous sulfate aqueous solution is become ferrous iron by the part in the iron powder added, another part and sulfuric acid reaction generate ferrous sulfate, along with described iron powder is continuous and sulfuric acid reaction, the pH value of described copperas solution constantly raises, titanium sulfate is wherein hydrolyzed into metatitanic acid and separates out, finally the metatitanic acid of precipitation is crossed and filter, namely the removal of impurities of copperas solution is completed,
The reaction formula of the chemical reaction occurred in copperas solution dedoping step mainly comprises:
TiOSO
4+Fe+2H
2O→H
2TiO
3↓+FeSO
4+H
2↑
Ti(SO
4)
2+Fe+H
2O→TiOSO
4+FeSO
4+H
2↑
Step 2, mixes the bittern water after removal of impurities and copperas solution, adds bicarbonate of ammonia simultaneously and constantly stirs, and obtains iron protocarbonate precipitation;
The reaction formula of the chemical reaction occurred in this step mainly comprises:
FeSO
4·7H
2O+2NaCl+2NH
4HCO
3→FeCO
3↓+Na
2SO
4+2NH
4Cl+H
2O+CO
2↑
Step 3, by the iron protocarbonate sedimentation and filtration that obtains in step 2 out, obtains iron protocarbonate filter residue, is then cleaned up by the iron protocarbonate filter residue water obtained;
Step 4, is added to the water mixing by the iron protocarbonate filter residue after cleaning up in step 3, then in water, adds hydrogen peroxide, ferric oxide crystal seed and potassium permanganate, blasts air and continuous stirred solution simultaneously, obtain iron oxide yellow precipitation in solution;
The reaction formula of the chemical reaction occurred in this step mainly comprises:
Step 5, by the iron oxide yellow sedimentation and filtration obtained in step 4, washing, obtains crude product iron oxide yellow;
Step 6, dries the crude product iron oxide yellow obtained in step 5, and bake out temperature controls, at 130 DEG C ~ 150 DEG C, namely to obtain iron oxide yellow product after oven dry;
Above steps is all carry out at ambient pressure.
It should be noted that, the copperas solution obtained at bittern water provided by the invention and production titanium dioxide is produced in the method for iron oxide yellow, potassium permanganate can not be added in step 4, and the consumption increasing hydrogen peroxide (in the method, hydrogen peroxide and potassium permanganate mainly play oxygenant) object of the present invention can be reached equally, the method records through the test of domestic middle area titanium white production enterprise, if increase the consumption of hydrogen peroxide in step 4 and cancel and add potassium permanganate, under the prerequisite of equal iron oxide yellow preparation amount, the wet method iron oxide yellow that whole preparation process is more traditional shortens 2 hours, but after adding potassium permanganate, in reaction process, potassium permanganate both can make oxygenant, its reduzate Manganse Dioxide has katalysis again to reaction, add hydrogen peroxide at the same time with potassium permanganate and under the identical prerequisite of iron oxide yellow preparation amount, the wet method iron oxide yellow that its whole preparation process is more traditional shortens 3 hours.
In addition, in embodiment provided by the invention, in order to simplify statement, eliminate the description to the environment division used in preparation process, one of ordinary skill in the art will appreciate that, the equipment used in above-mentioned steps is the usual equipment used in bittern chemical field.
As another aspect of the present invention, the copperas solution that a kind of bittern water and production titanium dioxide obtain produces the method for iron oxide red, comprises the following steps:
Step 1, first obtains iron oxide yellow product by method according to claim 1;
Step 2, dries iron oxide yellow product obtained in step 1, is removed by the crystal water in iron oxide yellow product and can obtain iron oxide red product at the temperature of 180 DEG C ~ 190 DEG C;
Above steps is all carry out at ambient pressure.
In sum, when equal iron oxide yellow or iron oxide red preparation amount, the copperas solution that bittern water provided by the invention and production titanium dioxide obtain produces the method for iron oxide yellow and iron oxide red relative to traditional wet method iron oxide yellow and iron oxide yellow, its whole production process can shorten 2 ~ 3 hours, thus, the production efficiency of enterprise obtains and significantly improves, and the economic benefit of generation clearly.
Above-mentioned embodiment is the present invention's preferably implementation, and in addition, the present invention can also realize by alternate manner, and under the prerequisite not departing from the technical program design, any apparent replacement is all within protection scope of the present invention.
Finally, it should be emphasized that, the improvements of the present invention relative to prior art are understood more easily in order to allow those of ordinary skill in the art, descriptions more of the present invention are simplified, and for the sake of clarity, present specification is omitted some other elements, and those of ordinary skill in the art it is to be appreciated that these elliptical elements also can form content of the present invention.
Claims (2)
1., by bittern water and a method of producing the copperas solution production iron oxide yellow that titanium dioxide obtains, comprise the following steps:
Step 1, removes the impurity in bittern water and copperas solution;
The impurity removed is needed to be MgCl in bittern water
2, MgSO
4, the impurity-removing method of bittern water is: first in bittern water, add bicarbonate of ammonia, can generate MgCO
3precipitation, the MgCO then will generated
3sedimentation and filtration removes, and namely completes the removal of impurities of bittern water;
The impurity removed is needed to be titanium sulfate and sulfuric acid in the copperas solution that production titanium dioxide obtains, the method of described copperas solution removal of impurities is: first in described ferrous sulfate aqueous solution, add iron powder, ferric iron back in ferrous sulfate aqueous solution is become ferrous iron by the part in the iron powder added, another part and sulfuric acid reaction generate ferrous sulfate, along with described iron powder is continuous and sulfuric acid reaction, the pH value of described copperas solution constantly raises, titanium sulfate is wherein hydrolyzed into metatitanic acid and separates out, finally the metatitanic acid of precipitation is crossed and filter, namely the removal of impurities of copperas solution is completed,
Step 2, mixes the bittern water after removal of impurities and copperas solution, adds bicarbonate of ammonia simultaneously and constantly stirs, and obtains iron protocarbonate precipitation;
Step 3, by the iron protocarbonate sedimentation and filtration that obtains in step 2 out, obtains iron protocarbonate filter residue, is then cleaned up by the iron protocarbonate filter residue water obtained;
Step 4, is added to the water mixing by the iron protocarbonate filter residue after cleaning up in step 3, then adds hydrogen peroxide, ferric oxide crystal seed and potassium permanganate, blasts air and continuous stirred solution simultaneously, obtains iron oxide yellow precipitation;
Step 5, by the iron oxide yellow sedimentation and filtration obtained in step 4, washing, obtains crude product iron oxide yellow;
Step 6, dries the crude product iron oxide yellow obtained in step 5, and bake out temperature controls, at 130 DEG C ~ 150 DEG C, namely to obtain iron oxide yellow product after oven dry;
Above steps is all carry out at ambient pressure.
2., by bittern water and a method of producing the copperas solution production iron oxide red that titanium dioxide obtains, comprise the following steps:
Step 1, first obtains iron oxide yellow product by method according to claim 1;
Step 2, dries iron oxide yellow product obtained in step 1, is removed by the crystal water in iron oxide yellow product and can obtain iron oxide red product at the temperature of 180 DEG C ~ 190 DEG C;
Above steps is all carry out at ambient pressure.
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| CN107265512B (en) * | 2017-06-26 | 2018-10-23 | 杭州金丰环保科技有限公司 | A kind of method of hermetically sealed dioxygen oxidation method production iron oxide yellow |
| CN107265511B (en) * | 2017-06-26 | 2018-11-20 | 杭州金丰环保科技有限公司 | A method of producing iron oxide yellow |
| CN113582238A (en) * | 2021-08-12 | 2021-11-02 | 山东春光磁电科技有限公司 | Preparation method of iron source for manganese-zinc ferrite |
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| CN1208019A (en) * | 1998-07-01 | 1999-02-17 | 中国农业科学院土壤肥料研究所 | Liquid phase process producing ferric oxide, potassium sulfate and ammonium chloride |
| DE102004016793A1 (en) * | 2004-04-06 | 2005-11-03 | Kerr-Mcgee Pigments Gmbh | Process for working up iron chlorides and / or solutions containing iron chloride and use of iron sulphate solution resulting therefrom |
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