CN114768603A - Loess slurrying system applied to alkali residue treatment process - Google Patents
Loess slurrying system applied to alkali residue treatment process Download PDFInfo
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- CN114768603A CN114768603A CN202210593338.7A CN202210593338A CN114768603A CN 114768603 A CN114768603 A CN 114768603A CN 202210593338 A CN202210593338 A CN 202210593338A CN 114768603 A CN114768603 A CN 114768603A
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Abstract
The invention relates to a loess slurrying system applied to an alkali residue treatment process. Defeated soil belt feeder is connected with loess screening unit, and defeated soil belt feeder is used for carrying the loess of gathering to loess screening unit and screens, and loess screening unit is arranged in detaching the impurity of mixing in the loess and obtains standard loess granule. Loess screening unit is connected with the change thick liquid pond, and standard loess granule is carried to change thick liquid pond from loess screening unit and is formed loess mud with water mixture. The slurry melting tank is connected with the slurry collecting tank, the stirring unit is arranged in the slurry collecting tank, and the slurry collecting tank is connected with the alkaline residue slurry tank through a slurry pump. According to the loess slurrying system applied to the alkali residue treatment process, loess is slurried and then is mixed with alkali residue slurry; compared with the original dry mixing method, the method for dissolving the slurry has the advantages that the slurry is mixed with the caustic sludge, so that the dilution and the mixing are uniform, the PH and the salt content are reduced, meanwhile, the gradation of the caustic sludge slurry can be changed, and the dehydration efficiency is improved.
Description
Technical Field
The invention relates to the technical field of environmental science, in particular to a loess pulping system applied to an alkali residue treatment process.
Background
The alkaline residue refers to alkaline residue discharged in the process of alkali production and alkali treatment in industrial production, and comprises CaCO as main component3、CaSO4、CaCl2And calcium salts. Comprises waste residue discharged in the process of preparing alkali by an ammonium-alkali method and alkaline waste residue discharged in other industrial production processes. The alkaline residue mainly comprises the waste residue which takes calcium salts such as calcium carbonate, calcium sulfate, calcium chloride and the like as main components, and also contains a small amount of sulfur dioxide and other components.
In the existing caustic sludge disposal project implemented at home and abroad, caustic sludge is dehydrated by a filter press to form caustic sludge cakes, and in order to reduce the pH value and the salt content of the caustic sludge cakes, the common method is to dry-mix loess and the caustic sludge cakes according to a certain proportion. And (4) carrying out treatment after physical dilution. The drawbacks of this solution are: because the particle size of the alkaline residue particles is small, the water content of the alkaline residue slurry is difficult to reduce to a qualified standard after the alkaline residue slurry is squeezed by a plate-and-frame filter press. The alkali residue cake and loess are mixed by dry stirring by a physical dilution method, and are difficult to be uniformly mixed.
Disclosure of Invention
The invention provides a loess pulping system applied to an alkali residue treatment process, aiming at the technical problems that in the prior art, an alkali residue cake and loess are mixed in a dry mixing mode by adopting a physical dilution method and are difficult to be uniformly mixed.
The technical scheme for solving the technical problems is as follows:
a loess pulping system applied to an alkali residue treatment process comprises: the device comprises a soil conveying belt conveyor, a loess screening unit, a slurry dissolving tank, a slurry collecting tank and a stirring unit;
the soil conveying belt is connected with the loess screening unit and is used for conveying collected loess to the loess screening unit for screening, and the loess screening unit is used for removing impurities mixed in the loess and obtaining standard loess particles;
the loess screening unit is connected with the slurry pond, and standard loess particles are conveyed from the loess screening unit to the slurry pond to be mixed with water to form loess slurry;
the slurry melting tank is connected with the slurry collecting tank, the stirring unit is arranged in the slurry collecting tank, and the slurry collecting tank is connected with the alkaline residue slurry tank through a slurry pump; the slurry collecting tank is used for storing the slurry in a disturbed state and conveying the slurry to the alkaline residue slurry tank.
Further, the method comprises the following steps: the loess screening unit includes: a trommel screen and a crusher;
the soil conveying belt machine is connected with an inlet of the rotary screen;
a first outlet of the drum screen is used for outputting large-particle loess which is not filtered, the first outlet of the drum screen is connected with an inlet of the crusher, and an outlet of the crusher is connected with the pulping tank;
and a second outlet of the drum screen is used for outputting the filtered small-particle loess, and is connected with the slurry pond.
Further: further comprising: a high-pressure water gun;
and the high-pressure water gun is matched with the slurry pond and is used for injecting high-pressure water into the slurry pond.
Further, the method comprises the following steps: further comprising: a grilling machine;
the grid machine is arranged on a channel connecting the pulp melting tank and the pulp collecting tank.
Further, the method comprises the following steps: the bottom depth of the slurry collecting tank is greater than that of the slurry melting tank;
a pump pit is arranged at the bottom of the slurry collecting pool, and the depth of the bottom of the pump pit is greater than that of the bottom of the slurry collecting pool;
the slurry pump is arranged in the pump pit.
Further, the method comprises the following steps: the stirring unit includes: the device comprises a first embedded part, a second embedded part, an I-shaped steel support and a vertical stirrer;
the first embedded part and the second embedded part are respectively arranged on two sides of the slurry collecting tank, and the first embedded part and the second embedded part are oppositely arranged; the I-shaped steel support is fixed on the first embedded part and the second embedded part and is positioned above the slurry collecting tank; the vertical stirrer is arranged on the I-shaped steel support.
The loess slurrying system applied to the alkali residue treatment process provided by the invention at least has the following beneficial effects or advantages:
the loess slurrying system applied to the alkali residue treatment process, provided by the invention, has the advantages that the collected loess is conveyed to the loess screening unit by the soil conveying belt conveyor for screening, and the loess screening unit removes impurities mixed in the loess and obtains standard loess particles; the standard loess particles are conveyed from the loess screening unit to a slurry pond and mixed with water to form loess slurry; the stirring unit is arranged in a slurry collecting pool, and the slurry collecting pool is connected with an alkaline residue slurry pool through a slurry pump; the slurry collecting tank stores the slurry in a disturbance state and conveys the slurry to the caustic sludge slurry tank. According to the loess pulping system applied to the alkali residue treatment process, loess is subjected to pulping and then is mixed with alkali residue slurry; compared with the original dry mixing method, the method for dissolving the slurry has the advantages that the slurry is mixed with the caustic sludge, so that the dilution and the mixing are uniform, the PH and the salt content are reduced, meanwhile, the gradation of the caustic sludge slurry can be changed, and the dehydration efficiency is improved.
Drawings
Fig. 1 is a block diagram of a loess slurrying system applied to an alkali residue treatment process according to an embodiment of the present invention;
FIG. 2 is a plan layout view of a slurry melting tank and a slurry collecting tank provided by the embodiment of the invention;
fig. 3 is a sectional view of a slurry pond and a slurry collecting pond provided by the embodiment of the invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-a soil conveying belt machine, 2-a rotary screen, 3-a crusher, 4-a slurry dissolving tank, 5-a slurry collecting tank, 6-an alkaline residue slurry tank, 7-an I-steel support, 8-a vertical stirrer, 9-a grid machine and 10-a pump pit.
Detailed Description
The invention provides a loess slurrying system applied to an alkali residue treatment process, aiming at the technical problems that in the prior art, alkali residue cakes and loess are mixed in a dry mixing mode by adopting a physical dilution method and are difficult to be uniformly mixed.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that terms such as "upper", "lower", "front", "rear", "left", "right", and the like in the embodiments indicate terms of orientation, and are used only for simplifying the positional relationship based on the drawings of the specification, and do not represent that the elements, devices, and the like which are referred to must operate according to the specific orientation and the defined operation and method, configuration in the specification, and such terms of orientation do not constitute a limitation of the present invention.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; may be directly connected or indirectly connected through an intermediate. To those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in conjunction with specific situations.
An embodiment of the present invention provides a loess pulping system applied to an alkali residue treatment process, as shown in fig. 1 to 3, including: the soil conveying belt machine 1, the loess screening unit, the chemical pulp pool 4, the chemical pulp pool 5 and the stirring unit.
Defeated soil belt feeder 1 is connected with loess screening unit, and defeated soil belt feeder 1 is used for carrying the loess of gathering to loess screening unit and screens, and loess screening unit is arranged in the impurity of detaching the loess and mixes and prevents to block up the sediment stuff pump and obtain standard loess granule. The preparation of the standard loess particles can ensure the uniformity of loess slurry.
Loess screening unit is connected with chemical thick liquid pond 4, and standard loess granule is carried to chemical thick liquid pond 4 from loess screening unit and is mixed with water and form loess mud. In order to further ensure the uniformity of the prepared loess slurry, the embodiment is further provided with: a high pressure water gun; a high pressure water gun; the high-pressure squirt cooperates with the slurrying pond 4 for inject high-pressure water into the slurrying pond 4, under the impact of high-pressure water, the loess granule dissolves the aquatic fast and forms loess mud. The concentration of the loess slurry is kept at 10% -20%, and the loess slurry with the concentration is added into the alkaline residue cake to achieve the best effect.
Change thick liquid pond 4 and collection thick liquid pond 5 and be connected, the stirring unit sets up in collection thick liquid pond 5, and the stirring unit is used for lasting the stirring to the loess mud that collects thick liquid pond 5, can make the loess mud mix more evenly on the one hand, and on the other hand can make the loess mud be in the disturbance state to prevent mud deposit or solidify. A passage of the slurry melting tank 4 connected with the slurry collecting tank 5 can be also provided with a grating machine 9, and the loess slurry overflows to the slurry collecting tank 5 after scum and weeds doped with the loess slurry are removed by the grating machine 9. The slurry collecting pool 5 is connected with the alkaline residue slurry pool 6 through a slurry pump, and loess slurry is conveyed into the alkaline residue slurry pool 6 according to the proportion through the slurry pump; the slurry collecting tank 5 is used for storing the slurry in a disturbance state and conveying the slurry to the caustic sludge slurry tank 6. The depth of the bottom of the slurry collecting pool 5 is greater than that of the bottom of the slurry melting pool 4, so that the loess slurry in the slurry melting pool 4 can overflow into the slurry collecting pool 5 naturally; a pump pit 10 is arranged at the bottom of the slurry collection pool 5, and the depth of the bottom of the pump pit 10 is greater than that of the bottom of the slurry collection pool 5, so that loess slurry in the slurry collection pool 5 can naturally overflow into the pump pit 10; through the mode of above-mentioned natural overflow, can reduce equipment input, reduce the energy consumption. The slurry pump is provided in the pump pit 10 for pumping loess slurry.
As shown in fig. 2 and 3, the loess screening unit may have the following structure: this loess screening cell includes: a rotary screen 2 and a crusher 3. This drum sieve 2 is electronic drum sieve, and the entry linkage of defeated soil belt feeder 1 and drum sieve 2 carries the loess to the drum sieve 2 in. A first outlet of the drum screen 2 is used for outputting large-particle loess which is not filtered, and a first outlet of the drum screen 2 is connected with an inlet of the crusher 3 to crush the large-particle loess; the export of breaker 3 is connected with the chemical pulp pond 4, and breaker 3 carries the tiny particle loess that obtains to chemical pulp pond 4 with the breakage. The second export of drum sieve 2 is used for exporting filterable tiny particle loess, and the second export of drum sieve 2 is connected with change thick liquid pond 4, directly carries the tiny particle loess to change thick liquid pond 4. Loess screening unit adds broken mode through the screening, processes into standard loess granule with large granule loess to improve the homogeneity of the loess mud who prepares.
As shown in fig. 2 and 3, the stirring unit may be configured as follows: the device comprises a first embedded part, a second embedded part, an I-shaped steel support 7 and a vertical stirrer 8. The first embedded part and the second embedded part are respectively arranged on two sides of the slurry collecting tank 5, and are oppositely arranged; the I-shaped steel support 7 is fixed on the first embedded part and the second embedded part, and the I-shaped steel support 7 is positioned above the slurry collecting tank 5; the vertical stirrer 8 is arranged on the I-shaped steel support 7.
The working process of the loess pulping system applied to the alkali residue treatment process provided by the embodiment of the invention is as follows: fig. 1-fig. 3, loess heap yard storage earth moving vehicle carries the loess of coming, and the excavator transports loess to defeated soil belt feeder 1, and defeated soil belt feeder 1 carries loess to drum sieve 2, and through the screening of drum sieve 2 after, the direct entering of tiny particle loess changes thick liquid pond 4, and large granule loess gets into breaker 3, through 3 broken backs of breaker, reentrant change thick liquid pond 4. The loess in the slurry pond 4 is washed by a high-pressure water gun to become loess slurry. The loess slurry is subjected to scum and weed removal in the loess slurry by a grating machine 9 and then overflows to a slurry collecting tank 5. The loess slurry in the slurry collecting pool 5 needs to be stirred by the stirrer ceaselessly to prevent the loess from precipitating. The loess slurry in the slurry collecting pool 5 is conveyed to the rear part by a slurry pump according to a certain proportion and is mixed with the alkaline residue slurry.
The loess slurrying system applied to the alkali residue treatment process provided by the embodiment of the invention at least has the following beneficial effects or advantages:
in the loess slurrying system applied to the alkali residue treatment process, the collected loess is conveyed to the loess screening unit by the soil conveying belt machine for screening, and the loess screening unit removes impurities mixed in the loess and obtains standard loess particles; the standard loess particles are conveyed from the loess screening unit to a slurry pond and mixed with water to form loess slurry; the stirring unit is arranged in a slurry collecting tank, and the slurry collecting tank is connected with the alkaline residue slurry tank through a slurry pump; the slurry collecting tank stores the slurry in a disturbance state and conveys the slurry to the caustic sludge slurry tank. According to the loess slurrying system applied to the alkali residue treatment process, loess is subjected to slurrying and then is mixed with alkali residue slurry; through the method of slurrying and the mixing of alkaline residue, compare with the original method of dry mixing, not only dilute the misce bene, reduced PH and contain the salt, can change the gradation of alkaline residue thick liquid simultaneously, carry out the sheet frame dehydration again, the dewatering effect promotes obviously, and the moisture content obviously reduces, has improved dehydration efficiency. And the whole system is open, so that the cleaning operation and sundries cleaning are convenient, and the maintenance is convenient. After the process is put into use, the impurities in the loess can be effectively reduced, equipment can normally operate, and the fault is not easy to occur.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (6)
1. The utility model provides a be applied to loess slurrying system of alkali dreg processing technology which characterized in that: the method comprises the following steps: the device comprises a soil conveying belt conveyor, a loess screening unit, a slurry dissolving tank, a slurry collecting tank and a stirring unit;
the soil conveying belt machine is connected with the loess screening unit, and is used for conveying collected loess to the loess screening unit for screening, and the loess screening unit is used for removing impurities mixed in the loess and obtaining standard loess particles;
the loess screening unit is connected with the chemical pulp pond, and standard loess particles are conveyed from the loess screening unit to the chemical pulp pond to be mixed with water to form loess slurry;
the slurry melting tank is connected with the slurry collecting tank, the stirring unit is arranged in the slurry collecting tank, and the slurry collecting tank is connected with the alkaline residue slurry tank through a slurry pump; the slurry collecting tank is used for storing the slurry in a disturbed state and conveying the slurry to the caustic sludge slurry tank.
2. The loess pulping system for an alkali dreg processing process according to claim 1, wherein: the loess screening unit includes: a trommel screen and a crusher;
the soil conveying belt machine is connected with an inlet of the rotary screen;
the first outlet of the rotary screen is used for outputting large-particle loess which is not filtered, the first outlet of the rotary screen is connected with the inlet of the crusher, and the outlet of the crusher is connected with the pulping tank;
and a second outlet of the drum screen is used for outputting the filtered small-particle loess, and is connected with the slurry pond.
3. The loess pulping system for caustic sludge treatment according to claim 2, wherein: further comprising: a high pressure water gun;
and the high-pressure water gun is matched with the slurry pond and is used for injecting high-pressure water into the slurry pond.
4. The loess pulping system for use in an alkali dreg processing process according to any one of claims 1 to 3, wherein: further comprising: a grilling machine;
the grid machine is arranged on a channel connecting the pulp melting tank and the pulp collecting tank.
5. The loess pulping system for use in an alkaline residue treatment process according to any one of claims 1 to 3, wherein: the bottom depth of the slurry collecting tank is greater than that of the slurry melting tank;
a pump pit is arranged at the bottom of the slurry collecting pool, and the depth of the bottom of the pump pit is greater than that of the bottom of the slurry collecting pool;
the slurry pump is arranged in the pump pit.
6. The loess pulping system for use in an alkali dreg processing process according to any one of claims 1 to 3, wherein: the stirring unit includes: the device comprises a first embedded part, a second embedded part, an I-shaped steel support and a vertical stirrer;
the first embedded part and the second embedded part are respectively arranged on two sides of the slurry collecting tank, and the first embedded part and the second embedded part are oppositely arranged; the I-shaped steel support is fixed on the first embedded part and the second embedded part and is positioned above the slurry collecting tank; the vertical stirrer is arranged on the I-shaped steel support.
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| CN202210593338.7A CN114768603A (en) | 2022-05-27 | 2022-05-27 | Loess slurrying system applied to alkali residue treatment process |
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| CN202210593338.7A CN114768603A (en) | 2022-05-27 | 2022-05-27 | Loess slurrying system applied to alkali residue treatment process |
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| US3932166A (en) * | 1972-06-07 | 1976-01-13 | Martin Vignovich | Landfill and soil conditioner |
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| CN1184087A (en) * | 1996-11-29 | 1998-06-10 | 渤海化工(集团)股份有限公司天津碱厂 | Production process of caustic sludge soil |
| CN201907152U (en) * | 2010-12-16 | 2011-07-27 | 厦门欣意盛陶瓷原料有限公司 | Ceramic blank preparing device |
| AU2012100556A4 (en) * | 2012-05-08 | 2012-07-12 | Green Technologies International | A Low Cost Rapid Neutralisation Process for Alkali By-Products and Waste Materials |
| CN104058568A (en) * | 2014-07-01 | 2014-09-24 | 彭宏方 | Method for treating mud silt |
| WO2016019774A1 (en) * | 2014-08-06 | 2016-02-11 | 华南理工大学 | Method for preparing chlorine-removal alkali residue mixture by utilizing alkali residues through ammonia-soda process and application thereof |
| CN108218317A (en) * | 2018-01-19 | 2018-06-29 | 湖北工业大学 | A kind of high-moisture percentage sullage solidifying method |
| KR20180137331A (en) * | 2017-06-16 | 2018-12-27 | 이석안 | Cohesion strengthening loess composition and loess structure using the same |
| CN212068336U (en) * | 2020-04-29 | 2020-12-04 | 华北电力大学（保定） | White mud desulfurization system |
| CN113069709A (en) * | 2021-03-30 | 2021-07-06 | 北京荣创岩土工程股份有限公司 | Treatment process for stably dehydrating ammonia-soda process alkaline residue |
-
2022
- 2022-05-27 CN CN202210593338.7A patent/CN114768603A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3932166A (en) * | 1972-06-07 | 1976-01-13 | Martin Vignovich | Landfill and soil conditioner |
| CN1130158A (en) * | 1995-02-28 | 1996-09-04 | 乔希海 | Method for producing engineering soil from alkaline slag |
| CN1184087A (en) * | 1996-11-29 | 1998-06-10 | 渤海化工(集团)股份有限公司天津碱厂 | Production process of caustic sludge soil |
| CN201907152U (en) * | 2010-12-16 | 2011-07-27 | 厦门欣意盛陶瓷原料有限公司 | Ceramic blank preparing device |
| AU2012100556A4 (en) * | 2012-05-08 | 2012-07-12 | Green Technologies International | A Low Cost Rapid Neutralisation Process for Alkali By-Products and Waste Materials |
| CN104058568A (en) * | 2014-07-01 | 2014-09-24 | 彭宏方 | Method for treating mud silt |
| WO2016019774A1 (en) * | 2014-08-06 | 2016-02-11 | 华南理工大学 | Method for preparing chlorine-removal alkali residue mixture by utilizing alkali residues through ammonia-soda process and application thereof |
| KR20180137331A (en) * | 2017-06-16 | 2018-12-27 | 이석안 | Cohesion strengthening loess composition and loess structure using the same |
| CN108218317A (en) * | 2018-01-19 | 2018-06-29 | 湖北工业大学 | A kind of high-moisture percentage sullage solidifying method |
| CN212068336U (en) * | 2020-04-29 | 2020-12-04 | 华北电力大学（保定） | White mud desulfurization system |
| CN113069709A (en) * | 2021-03-30 | 2021-07-06 | 北京荣创岩土工程股份有限公司 | Treatment process for stably dehydrating ammonia-soda process alkaline residue |
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