CN206447970U - A kind of system that calcium sulfate crystal whiskers are prepared with waste phosphogypsum - Google Patents
A kind of system that calcium sulfate crystal whiskers are prepared with waste phosphogypsum Download PDFInfo
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- CN206447970U CN206447970U CN201720140468.XU CN201720140468U CN206447970U CN 206447970 U CN206447970 U CN 206447970U CN 201720140468 U CN201720140468 U CN 201720140468U CN 206447970 U CN206447970 U CN 206447970U
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Abstract
The utility model discloses a kind of system that calcium sulfate crystal whiskers are prepared with waste phosphogypsum, to solve the problem of ardealite utilization rate is low.The system described in the utility model that calcium sulfate crystal whiskers are prepared with waste phosphogypsum, it includes the equipment such as reaction tower, the first filter, waste liquid pool, the first water scrubber, the second filter, kiln, absorption tower, settling tank, ball mill, the second water scrubber, the 3rd filter, hydrothermal reaction kettle, the 4th filter, water scrubber group, drying machine, storage box；By using the system described in the utility model that calcium sulfate crystal whiskers are prepared with waste phosphogypsum, waste phosphogypsum can be produced as calcium sulfate whiskers, effective utilization to waste phosphogypsum can be thus realized, the commercial value of ardealite is improved, is finally reached the purpose of " turning waste into wealth ".
Description
Technical field
The utility model is related to a kind of system that calcium sulfate crystal whiskers are prepared with waste phosphogypsum.
Background technology
Ardealite, refers in phosphoric acid production the solid slag produced during with sulfuric acid treating phosphorite, and its main component is
CaSO42H2O, additionally containing various other impurity.At present in Europe, the United States, Deng industrially developed country, then pay much attention to pair
The comprehensive utilization of ardealite, the research that plaster of Paris is such as made by raw material of ardealite has been enter into the stage of ripeness, can completely carry
Go out a set of process production techniques and equipment, the plaster of Paris being made can be better than or with the building being equal to using the natural gypsum as raw material
Gypsum.It is most of to be handled for calcellation but current most of enterprise of China is still relatively low for the utilization ratio of ardealite, because
And cause the substantial amounts of wasting of resources.
Utility model content
The utility model solve technical problem be：For ardealite utilization rate it is low the problem of there is provided one kind with discarded
The system of preparing calcium sulphate whiskers from ardealite, to improve the utilization ratio of ardealite.
The utility model solves the technical scheme that its technical problem used：One kind prepares calcium sulfate with waste phosphogypsum
The system of whisker, including,
Reaction tower, the reaction tower is used for waste phosphogypsum and mixing pickle is reacted；
First filter, the solidliquid mixture that first filter is used to discharge after reacting from reaction tower carries out solid-liquid
It is separated by filtration；
Waste liquid pool, the waste liquid pool is used to store the filtrate after the first filter is separated by filtration；
First water scrubber, first water scrubber is used to carry out the solid matter after the first filter is separated by filtration
Washing process；
Second filter, second filter is used to enter the solidliquid mixture after the first water scrubber washing process
Row solid-liquid filtration is separated；
Kiln, the kiln is used to carry out calcination process to the solid matter after the second filter is separated by filtration；
Absorption tower, the absorption tower is used to absorb the carbon dioxide produced in kiln roasting process；
Settling tank, the settling tank is used to carry out settlement treatment to the slurries produced in absorption tower；
Ball mill, the ball mill is used to carry out processing of milling to the solid matter after kiln is calcined；
Second water scrubber, second water scrubber is used to wash the solid matter after ball mill mills processing
Processing；
3rd filter, the 3rd filter is used to enter the solidliquid mixture after the second water scrubber washing process
Row solid-liquid filtration is separated；
Hydrothermal reaction kettle, the hydrothermal reaction kettle is used to carry out the solid matter after the 3rd filter is separated by filtration
Hydro-thermal reaction；
4th filter, the solidliquid mixture that the 4th filter is used to discharge after reacting from hydrothermal reaction kettle is carried out
Solid-liquid filtration is separated；
Water scrubber group, the water scrubber group is used to wash the solid matter after the 4th filter is separated by filtration
Processing；
Drying machine, the drying machine is used to processing is dried to the solid matter after water scrubber group washing process；
Storage box, the storage box is used to store by the dried solid matter of drying machine.
It is further：The water scrubber group includes the 3rd water scrubber, the 5th filter, the 4th washing set gradually
Tower, the 6th filter, the 5th water scrubber and the 7th filter.
It is further：The reaction tower and hydrothermal reaction kettle are respectively provided with agitating device.
The beneficial effects of the utility model are：By using one kind described in the utility model sulphur is prepared with waste phosphogypsum
Waste phosphogypsum, can be produced as calcium sulfate whiskers by the system of sour calcium pyroborate, thus can realize have to waste phosphogypsum
Effect is utilized, and is improved the commercial value of ardealite, is finally reached the purpose of " turning waste into wealth ".
Brief description of the drawings
Fig. 1 is the schematic diagram of the system described in the utility model that calcium sulfate crystal whiskers are prepared with waste phosphogypsum；
Marked in figure：Reaction tower 1, the first filter 2, waste liquid pool 3, the first water scrubber 4, the second filter 5, kiln 6,
Absorption tower 7, settling tank 8, ball mill 9, the second water scrubber 10, the 3rd filter 11, hydrothermal reaction kettle 12, the 4th filter 13,
Drying machine 14, storage box 15, the 3rd water scrubber 16, the 5th filter 17, the 4th water scrubber 18, the 6th filter 19, the 5th water
Wash tower 20, the 7th filter 21, the first buffer tank 22, the second buffer tank 23, the 3rd buffer tank 24, the 4th buffer tank the 25, the 5th
Buffer tank 26, the 6th buffer tank 27, the 7th buffer tank 28.
Embodiment
The utility model is further illustrated with reference to the accompanying drawings and detailed description.
Specific example as shown in Figure 1, one kind described in the utility model prepares calcium sulfate crystal whiskers with waste phosphogypsum
System, including,
Reaction tower 1, the reaction tower 1 is used for waste phosphogypsum and mixing pickle is reacted；
First filter 2, the solidliquid mixture that first filter 2 is used to discharge after reacting from reaction tower 1 is carried out
Solid-liquid filtration is separated；
Waste liquid pool 3, the waste liquid pool 3 is used to store the filtrate after the first filter 2 is separated by filtration；
First water scrubber 4, first water scrubber 4 is used for the solid matter after the first filter 2 is separated by filtration
Carry out washing process；
Second filter 5, second filter 5 is used to mix the solid-liquid after the washing process of the first water scrubber 4
Thing carries out solid-liquid filtration separation；
Kiln 6, the kiln 6 is used to carry out calcination process to the solid matter after the second filter 5 is separated by filtration；
Absorption tower 7, the absorption tower 7 is used to absorb the carbon dioxide produced in the roasting process of kiln 8；
Settling tank 8, the settling tank 8 is used to carry out settlement treatment to the slurries produced in absorption tower 7；
Ball mill 9, the ball mill 9 is used to carry out processing of milling to the solid matter after the roasting of kiln 8；
Second water scrubber 10, second water scrubber 10 is used to carry out the solid matter after ball mill mills processing
Washing process；
3rd filter 11, the 3rd filter 11 is used to mix the solid-liquid after the washing process of the second water scrubber 10
Compound carries out solid-liquid filtration separation；
Hydrothermal reaction kettle 12, the hydrothermal reaction kettle 12 is used for the solids after the 3rd filter 11 is separated by filtration
Matter carries out hydro-thermal reaction；
4th filter 13, the 4th filter 13 is used for the solid-liquid mixing discharged after being reacted from hydrothermal reaction kettle 12
Thing carries out solid-liquid filtration separation；
Water scrubber group, the water scrubber group is used to enter water-filling to the solid matter after the 4th filter 13 is separated by filtration
Wash processing；
Drying machine 14, the drying machine 14 is used to place is dried to the solid matter after water scrubber group washing process
Reason；
Storage box 15, the storage box 15 is used to store by the dried solid matter of drying machine 14.
Wherein, water scrubber group can further comprise the 3rd water scrubber 16, the 5th filter 17, the 4th washing set gradually
Tower 18, the 6th filter 19, the 5th water scrubber 20 and the 7th filter 21.So it be can be achieved by water scrubber group to corresponding solid
Material carries out three washings, filtration treatments, and then ensures to enter eventually into the miscellaneous of the attachment of the solid matter surface in drying machine 14
Liquid either debris etc. is cleaned up substantially.
More specifically, the annexation shown in accompanying drawing 1 is may further reference, by setting corresponding first buffer tank 22,
Two buffer tanks 23, the 3rd buffer tank 24, the 4th buffer tank 25, the 5th buffer tank 26, the 6th buffer tank 27 and the 7th buffer tank 28
The solution of the multiple washing process, the hydro-thermal reaction that carry out in the entire system etc. is reclaimed and reused Deng realizing, and
Solution after most washing at last is stored into the first buffer tank 22, afterwards by adding respective concentration into first buffer tank 22
Extra hydrochloric acid solution and sulfuric acid solution after configuration formed needed for concentration be used for be added to mixing pickling in reaction tower 1
Liquid.The filtrate filtered to isolate by the 7th filter 21 is such as cached by the 7th buffer tank 28, the 4th washing is then used it for
Washing process is carried out in tower 18；And the liquid after the washing process of the 4th water scrubber 18 is filtered out after filtrate by the 6th filter 19 again
It is cached in the 6th buffer tank 27, is used to the liquid in the 6th buffer tank 27 carry out at washing in the 3rd water scrubber 16 afterwards
Reason.
In addition, the purpose on absorption tower 7 is inhaled for gases such as the carbon dioxide to being produced in the roasting process of kiln 8
Receive；General, it can be absorbed using spray column form, and the liquid sprayed can be using institute's shape after being mixed by calcium oxide with water
Into solution.And in view of calcium carbonate solid material will be produced in absorption tower 7 in these cases, therefore titanium dioxide will absorbed
Slurries are produced after carbon.Settling tank 8 is further provided with for this, the settling tank 8 is used to carry out the slurries produced in absorption tower 7
Settlement treatment；Also, after settlement treatment, the clear liquid of top in settling tank 8 can be reclaimed again and be used for the first water scrubber 4
Middle carry out washing process.More specifically, referring to the drawings shown in 1, the absorbing liquid used in absorption tower 7 can be used in the 3rd filtering
The solution formed after a certain amount of calcium oxide is added in the filtrate that device 11 is filtered and reclaimed.
In addition, in order to improve corresponding reaction rate, the utility model is further in reaction tower 1 and hydrothermal reaction kettle 12
Respectively it is provided with agitating device.The reaction rate of each inside reactor is improved by the stirring action of agitating device.Certainly,
Agitating device can be respectively arranged with each water scrubber.
Referring to the drawings shown in 1, a kind of typical process flow of the present utility model is as follows：
Configuration forms mixing pickle in the first buffer tank 22, wherein mixing pickle can be by weight than for 20-36%'s
Hydrochloric acid solution is 1 according to volume ratio than the sulfuric acid solution for 40-50% with weight:Obtained after 1 mixing.Then pickling will be mixed again
Liquid and waste phosphogypsum are added together carries out pickling reaction in the reaction tower 1 with agitating device.Pass through the acid in reaction tower 1
Most of acid-soluble solid matter, such as Al, Fe oxide in waste phosphogypsum can be dissolved by washing reaction.
Then the solidliquid mixture after fully being reacted in reaction tower 1 is added in the first filter 2 and carries out separation of solid and liquid,
The solid matter wherein isolated, which enters in the first water scrubber 4, carries out washing process, then carries out solid-liquid by the second filter 5 again
It is separated by filtration.And the filtrate filtered to isolate by the first filter 2 enters placement in waste liquid pool 3.Wherein, in the first water scrubber
During 4 carry out washing process, the solution after washing process can be recycled, will be filtered by the second filter 5
The filtrate gone out is recycled in the second buffer tank 23, and can be as the mixing pickling being configured in reaction tower 1 needed for reaction
The solution of liquid.
It is above-mentioned that the solid matter filtered out, which is added in kiln 6, carries out calcination process after the filtering of the second filter 5,
Wherein sintering temperature is set to 400 DEG C ~ 600 DEG C, and the time is 2h ~ 6h.Simultaneously CO will be produced in roasting processx、NOx、SOxDeng gas
Body, wherein based on carbon dioxide；Now above-mentioned gas can further be absorbed by absorption tower 7.Specifically, absorption tower
7 can use spray column, and the liquid of absorption can be used calcium oxide（CaO）The solution formed after being added to the water；Now exist
Slurries based on calcium carbonate will be produced in absorption tower 7, slurries are subjected to settlement treatment in settling tank 8 again afterwards, and can be by
The clarified solution on the upper strata of settling tank 8 is recycled to the solution for being used as washing process in the first water scrubber 4.
Solid matter after roasting further carries out the place that mills with ball mill 9 due to that can produce sintering to it
Reason.Solid matter after processing of milling further carries out washing process in the second water scrubber 10, and the 3rd is then passed through again
Filter 11 is filtered, and the solid matter after filtering is added in hydrothermal reaction kettle 12 carries out hydro-thermal reaction, its reclaimed water
The temperature of thermal response may be configured as 150 DEG C ~ 200 DEG C, and the reaction time is 4h ~ 7h.Again by the 4th filter after hydro-thermal reaction
13 carry out solid-liquid filtration separation, and the solid matter isolated is carried out into repeatedly washing, filtration treatment by water scrubber group again afterwards；Most
The solid matter after repeatedly washing, filtration treatment is stored in storage box 15 after being dried in drying machine 14 eventually, wherein depositing
It is stored in the material as calcium sulfate whiskers in storage box 15.
Described above, preferred embodiment only of the present utility model is all not pay not to limit the utility model
In the case of creative work, any modification, equivalent substitution and improvements done in spirit of the present utility model and principle etc.,
It should be included within protection domain of the present utility model.
Claims (3)
1. a kind of system that calcium sulfate crystal whiskers are prepared with waste phosphogypsum, it is characterised in that：Including,
Reaction tower（1）, the reaction tower（1）Reacted for waste phosphogypsum and mixing pickle；
First filter（2）, first filter（2）For will be from reaction tower（1）The solidliquid mixture discharged after reaction enters
Row solid-liquid filtration is separated；
Waste liquid pool（3）, the waste liquid pool（3）For to passing through the first filter（2）Filtrate after being separated by filtration is stored；
First water scrubber（4）, first water scrubber（4）For to passing through the first filter（2）Solids after being separated by filtration
Matter carries out washing process；
Second filter（5）, second filter（5）For the first water scrubber will to be passed through（4）Solid-liquid after washing process is mixed
Compound carries out solid-liquid filtration separation；
Kiln（6）, the kiln（6）For to passing through the second filter（5）Solid matter after being separated by filtration is carried out at roasting
Reason；
Absorption tower（7）, the absorption tower（7）For to kiln（8）The carbon dioxide produced in roasting process is absorbed；
Settling tank（8）, the settling tank（8）For to absorption tower（7）The slurries of middle generation carry out settlement treatment；
Ball mill（9）, the ball mill（9）For to passing through kiln（8）Solid matter after roasting carries out processing of milling；
Second water scrubber（10）, second water scrubber（10）For to passing through ball mill（9）The solid matter milled after handling
Carry out washing process；
3rd filter（11）, the 3rd filter（11）For the second water scrubber will to be passed through（10）Solid-liquid after washing process
Mixture carries out solid-liquid filtration separation；
Hydrothermal reaction kettle（12）, the hydrothermal reaction kettle（12）For to passing through the 3rd filter（11）Solid after being separated by filtration
Material carries out hydro-thermal reaction；
4th filter（13）, the 4th filter（13）For will be from hydrothermal reaction kettle（12）The solid-liquid discharged after reaction is mixed
Compound carries out solid-liquid filtration separation；
Water scrubber group, the water scrubber group is used for passing through the 4th filter（13）Solid matter after being separated by filtration is washed
Processing；
Drying machine（14）, the drying machine（14）For place to be dried to the solid matter after water scrubber group washing process
Reason；
Storage box（15）, the storage box（15）For storing by drying machine（14）Dried solid matter.
2. a kind of system that calcium sulfate crystal whiskers are prepared with waste phosphogypsum as claimed in claim 1, it is characterised in that：The water
Wash the 3rd water scrubber that tower group includes setting gradually（16）, the 5th filter（17）, the 4th water scrubber（18）, the 6th filter
（19）, the 5th water scrubber（20）With the 7th filter（21）.
3. a kind of system that calcium sulfate crystal whiskers are prepared with waste phosphogypsum as claimed in claim 1 or 2, it is characterised in that：Institute
State reaction tower（1）And hydrothermal reaction kettle（12）Respectively it is provided with agitating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720140468.XU CN206447970U (en) | 2017-02-16 | 2017-02-16 | A kind of system that calcium sulfate crystal whiskers are prepared with waste phosphogypsum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720140468.XU CN206447970U (en) | 2017-02-16 | 2017-02-16 | A kind of system that calcium sulfate crystal whiskers are prepared with waste phosphogypsum |
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| Publication Number | Publication Date |
|---|---|
| CN206447970U true CN206447970U (en) | 2017-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720140468.XU Expired - Fee Related CN206447970U (en) | 2017-02-16 | 2017-02-16 | A kind of system that calcium sulfate crystal whiskers are prepared with waste phosphogypsum |
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| CN (1) | CN206447970U (en) |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170829 Termination date: 20180216 |