CN101531399A - Method for recovering titanium pigment white water - Google Patents
Method for recovering titanium pigment white water Download PDFInfo
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- CN101531399A CN101531399A CN200910029332A CN200910029332A CN101531399A CN 101531399 A CN101531399 A CN 101531399A CN 200910029332 A CN200910029332 A CN 200910029332A CN 200910029332 A CN200910029332 A CN 200910029332A CN 101531399 A CN101531399 A CN 101531399A
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- titanium pigment
- white water
- production process
- recovering
- filter cake
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Abstract
The invention discloses a method for recovering titanium pigment white water, which comprises the following steps of: filtering white water generated in a production process of titanium pigment to obtain a filter cake; pulping the filter cake to make pulp; and finally, delivering the pulp to the washing working procedure in the production process of the titanium pigment for reuse. The technical proposal can increase the rate of the recovery of the titanium pigment from the white water to 102 percent from 98 percent and make the waste water reach standards before discharge at the same time.
Description
Technical field
The present invention relates to a kind of recovery method of trade effluent, specifically relate to a kind of method for recovering titanium pigment white water.
Background technology
Trade effluent directly is discharged in the environment as the emission standard that do not reach regulation, just environment has been produced pollution, and can jeopardize people's health, and is therefore imperative to the processing of waste water.Carry out wastewater treatment, can turn harm into good, turn waste into wealth, prevent the pollution of the environment, promote the well-being of mankind.Need to add coated fertilizer in the titanium dioxide surface treatment procedure at present, by the titanium dioxide after the surface treatment, titanium dioxide per ton should be 1.02 tons a finished product, but the yield that titanium dioxide is generally acknowledged can only reach 98%.As shown in Figure 1, the sand milling operation in the production process of titanium pigment, surface treatment procedure, washing step, drying process and vapour powder operation all can produce plain boiled water.Usually adopt membrane filtering method to carry out white water recycle at present, the most of employing of membrane filtration colluded your film in the titanium dioxide industry, and this equipment is owing to be that import equipment makes the cost height, and can not continuous production, when repair apparatus, also have plain boiled water to flow out, be unfavorable for improving the yield of titanium dioxide.
Summary of the invention
Goal of the invention: the purpose of this invention is to provide a kind of method for recovering titanium pigment white water that can reduce cost, improve the titanium dioxide yield, this method can make the yield of titanium dioxide reach 102%.
Technical scheme: in order to solve the problems of the technologies described above, the technical solution used in the present invention is:
A kind of method for recovering titanium pigment white water, this method comprises the steps:
(1) plain boiled water that produces in the production process of titanium pigment is filtered, get filter cake;
(2) filter cake in the step (1) is pulled an oar into slurries;
(3) slurries in the step (2) are transported in the washing step in the production process of titanium pigment and reuse.
As a further improvement on the present invention, in step (1), plain boiled water is filtered in by plate-and-frame filter press.
In the step (1), filter the end back at described plain boiled water and in plate-and-frame filter press, feed the pressurized air that removal remains in filter body in the plate-and-frame filter press.
Adopt plate-and-frame filter press to filter among the present invention, feeding pressurized air after filtering end in plate-and-frame filter press can remove the liquid that remains in wherein, does not have plain boiled water like this and flow out when repair apparatus, makes the yield of titanium dioxide reach 102%; And adopt membrane filtering method that titanium dioxide is carried out white water recycle in the prior art usually, adopt in this method and collude your film, owing to be that import equipment makes the cost height, and can not continuous production, also having plain boiled water when repair apparatus flows out, cause the titanium dioxide in the plain boiled water to run off, thereby reduced the yield of titanium dioxide.
Beneficial effect: compared with prior art, advantage of the present invention is the cost that has reduced white water recycle, and the yield that makes titanium dioxide 98% brings up to 102% from what generally acknowledge, can make discharged wastewater met the national standard simultaneously.
Description of drawings
Fig. 1 is the aftertreatment skeleton diagram of titanium dioxide.
Fig. 2 is a schema of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
A kind of method for recovering titanium pigment white water of the present invention, this method comprise the steps: that the plain boiled water that will produce in the production process of titanium pigment filters, and gets filter cake; Filter cake is pulled an oar into slurries; Again slurries are transported in the washing step in the production process of titanium pigment and reuse.
Specifically as shown in Figure 2:
Be pooled in the pond for recovering 5 from the plain boiled water in the sand milling operation in the production process of titanium pigment, surface treatment procedure, washing step, drying process and the vapour powder operation, plain boiled water in the pond for recovering 5 is transported to filtration in the plate-and-frame filter press 2 by transferpump 1, filter cake is stayed in the plate-and-frame filter press 2, after filtering end, in plate-and-frame filter press 2, feed pressurized air to remove the filtrate that remains in the plate-and-frame filter press 2; Open plate-and-frame filter press 2, filter cake is discharged in the hollander tub 3, filter cake becomes slurries after pulling an oar; Slurries reuse by the washing step that charging pump 4 is transported in the production process of titanium pigment.Pump and place, equipment position used in production process of titanium pigment leave the reflux pipeline that drains mouth and equipment material.
Claims (3)
1, a kind of method for recovering titanium pigment white water is characterized in that: this method comprises the steps:
(1) plain boiled water that produces in the production process of titanium pigment is filtered, get filter cake;
(2) filter cake in the step (1) is pulled an oar into slurries;
(3) slurries in the step (2) are transported in the washing step in the production process of titanium pigment and reuse.
2, method for recovering titanium pigment white water according to claim 1 is characterized in that: in step (1) plain boiled water is filtered by plate-and-frame filter press.
3, method for recovering titanium pigment white water according to claim 2 is characterized in that: in the step (1), filter the end back at described plain boiled water and feed the pressurized air that removal remains in liquid in the plate-and-frame filter press in plate-and-frame filter press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910029332A CN101531399A (en) | 2009-04-09 | 2009-04-09 | Method for recovering titanium pigment white water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910029332A CN101531399A (en) | 2009-04-09 | 2009-04-09 | Method for recovering titanium pigment white water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101531399A true CN101531399A (en) | 2009-09-16 |
Family
ID=41102285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910029332A Pending CN101531399A (en) | 2009-04-09 | 2009-04-09 | Method for recovering titanium pigment white water |
Country Status (1)
| Country | Link |
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| CN (1) | CN101531399A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102807253A (en) * | 2012-08-16 | 2012-12-05 | 江西景泰钽业有限公司 | Washing method and washing device for tantalum-niobium hydroxide |
| CN103274462A (en) * | 2013-03-15 | 2013-09-04 | 四川龙蟒钛业股份有限公司 | Method for recycling acidic washing water in rutile titanium dioxide production process |
| CN109574088A (en) * | 2018-11-26 | 2019-04-05 | 天津市国润永泰环保科技有限公司 | The method and its application of iron black removal product removal of impurities are produced using waste |
| CN112222158A (en) * | 2020-10-09 | 2021-01-15 | 湖南创大玉兔化工有限公司 | Method for recovering waste materials of rotary kiln |
-
2009
- 2009-04-09 CN CN200910029332A patent/CN101531399A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102807253A (en) * | 2012-08-16 | 2012-12-05 | 江西景泰钽业有限公司 | Washing method and washing device for tantalum-niobium hydroxide |
| CN102807253B (en) * | 2012-08-16 | 2014-04-16 | 江西智诚新材料科技有限公司 | Washing method and washing device for tantalum-niobium hydroxide |
| CN103274462A (en) * | 2013-03-15 | 2013-09-04 | 四川龙蟒钛业股份有限公司 | Method for recycling acidic washing water in rutile titanium dioxide production process |
| CN109574088A (en) * | 2018-11-26 | 2019-04-05 | 天津市国润永泰环保科技有限公司 | The method and its application of iron black removal product removal of impurities are produced using waste |
| CN112222158A (en) * | 2020-10-09 | 2021-01-15 | 湖南创大玉兔化工有限公司 | Method for recovering waste materials of rotary kiln |
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Open date: 20090916 |