CN111744659A - Method for controlling particle size in kaolin production process - Google Patents
Method for controlling particle size in kaolin production process Download PDFInfo
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- CN111744659A CN111744659A CN202010614317.XA CN202010614317A CN111744659A CN 111744659 A CN111744659 A CN 111744659A CN 202010614317 A CN202010614317 A CN 202010614317A CN 111744659 A CN111744659 A CN 111744659A
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- pulp
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
Abstract
The invention relates to the technical field of kaolin production, and discloses a method for controlling particle size in a kaolin production process, which comprises the following steps: the method comprises the following steps of manually selecting miscellaneous stones from blocky coal gangues or kaolinite rocks, stacking the coal gangues or kaolinite rocks with large size difference in the selection process, conveying the selected coal gangues or kaolinite rocks to a flushing frame by using a conveying frame for flushing and removing sand, and crushing raw materials conveyed to a raw material warehouse to be less than 5 cm. This method of granularity in control kaolin production process, through the right side fixed mounting to the cell body rose box, and to the inside fixed mounting of cell body have extend to the inside waste water pipe of rose box, and to the outside fixed mounting of rose box the drain pipe, and to the inside fixed mounting of rose box the filter screen, and to the inside of rose box filled the active carbon that is located the filter screen right side, can filter waste water through the filter screen and pass through the active carbon adsorption clearance finally discharge again, reached the effect of environmental protection.
Description
Technical Field
The invention relates to the technical field of kaolin production, in particular to a method for controlling particle size in a kaolin production process.
Background
Kaolin is a non-metallic mineral product, is a clay and claystone mainly made of kaolinite clay minerals, is white and fine, is also called dolomite, is named as Jingdezhen Kaolin village in Jiangxi province, and pure kaolin is pure white, fine and soft, has good physical and chemical properties such as plasticity and fire resistance, and mainly comprises kaolinite, halloysite, hydromica, illite, montmorillonite, quartz, feldspar and other minerals.
The particle size of kaolin is directly related to the quality of kaolin products, particularly, the kaolin after finish machining has higher and higher requirements on the particle size of kaolin in the aspect of application, such as paper making, chemical engineering, coatings, rubber and the like, so that how to control the particle size in the kaolin processing process is particularly important for deep processing of kaolin, the traditional sedimentation method is influenced by environmental temperature and sedimentation height, particularly, the time required by products with small particle size is longer, for example, the particle size of 2 micrometers is larger than 90, the sedimentation time exceeds 48 hours, and is influenced by the environmental temperature and sedimentation height, the sedimentation time is longer, and the production efficiency is severely limited, so that a method for controlling the particle size in the kaolin production process is provided to solve the problems.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a method for controlling the particle size in the kaolin production process, which has the advantages of high efficiency, stable particle size and environmental protection, and solves the problems that the traditional sedimentation method is influenced by the environmental temperature and the sedimentation height, particularly, the time required by products with small particle size is longer, for example, the particle size of 2 microns is more than 90, the sedimentation time exceeds 48 hours, the sedimentation time is longer under the influence of the environmental temperature and the sedimentation height, and the production efficiency is seriously restricted.
(II) technical scheme
1. A method for controlling particle size during kaolin production, comprising the steps of:
1) the method comprises the steps of manually selecting miscellaneous stones from massive coal gangues or kaolinite rocks, and stacking the coal gangues or kaolinite rocks with large size difference in the selection process.
2) The selected coal gangue or kaolinite rock is conveyed to a washing frame by using a conveying frame to be washed and desanded, the raw material conveyed to a raw material warehouse needs to be crushed to be less than 5cm, and the crushed raw material is conveyed to a belt conveyor through a vibrating screen and conveyed to a raw material storage bin by the belt conveyor.
3) Raw materials in a raw material storage bin are added into a pulp smashing pool through a plate feeder according to a certain feeding amount, water and a dispersing agent capable of dispersing pulp are added at the same time, the pulp concentration is about 30%, high-speed stirring and scattering are carried out, the pH value of the pulp is controlled to be 7.0-8.0, the specific gravity of the pulp is controlled to be 1.13-1.16, the specific gravity of the pulp after grading is 1.09-1.12 and the grading effect are ensured, and after the pulp enters a horizontal spiral centrifugal machine, the pulp is graded through the horizontal spiral centrifugal machine, so that the granularity of the pulp reaches the quality requirement of a produced product.
4) The ore pulp after high-speed dispersion firstly enters the roughing operation and passes through a hydrocyclone
And
the overflow ore pulp after the rough concentration enters the fine concentration operation and respectively passes through
And
finally, the high-pressure cyclone is subjected to superfine classification
5) The separated ore concentrate pulp is conveyed to a large-scale automatic filter press by a plunger pump for filter pressing and dehydration, and the ore pulp with the concentration of 8 percent is filter-pressed into a semi-finished product with the water content of 30 percent.
6) And (4) conveying the semi-finished product subjected to filter pressing and dehydration to a drying rack for natural drying, wherein the water content of the dried finished product is about 5%.
7) And conveying the dried finished product to a particle rolling and packaging workshop, crushing the dried kaolin mud cake into particles with the particle size of 3-5 cm by using a crusher, lifting the particles to a finished product buffer bin by using a lifter, and then, conveying the particles to an automatic packaging machine for packaging in an automatic unloading mode.
Preferably, the conveying frame in the step 2 comprises two connecting wheels, the two connecting wheels are in transmission connection through a conveying belt, a power motor is fixedly mounted on the back of the conveying frame, a conveying shaft of the power motor is fixedly connected with the connecting wheels, and a bearing plate located inside the conveying belt is fixedly mounted on the outer portion of the conveying frame.
Preferably, the washing frame in step 2 includes the support body, the top fixed mounting of support body has the support frame, the inside fixed mounting of support frame has the flushing pipe, the bottom fixed mounting of flushing pipe has the sprinkler bead, the inside fixed mounting of support body has the storage water tank, the storage water tank passes through pipe fixed connection with the flushing pipe, the outside fixed mounting of pipe has the suction pump.
Preferably, the pulping tank of step 3 includes the cell body, the right side fixed mounting of cell body has the rose box, the inside fixed mounting of cell body has the waste pipe that extends to the rose box inside, the outside fixed mounting of rose box has the drain pipe, the inside fixed mounting of rose box has the filter screen, the inside packing of rose box has the active carbon that is located the filter screen right side.
(III) advantageous effects
Compared with the prior art, the invention provides a method for controlling the granularity in the kaolin production process, which has the following beneficial effects:
1. the method for controlling the granularity in the kaolin production process comprises the steps of manually selecting the gangue from blocky gangue or kaolinite, stacking the gangue or kaolinite with large size difference in the selection process, conveying the selected gangue or kaolinite to a flushing frame by using a conveying frame for flushing and removing sand, crushing the raw material conveyed to a raw material warehouse to be less than 5cm, conveying the crushed raw material to a belt conveyor by using a vibrating screen, conveying the crushed raw material to a raw material storage bin by using the belt conveyor, adding the raw material in the raw material storage bin into a slurry pool by using a plate feeder according to a certain feeding amount, simultaneously adding water and a dispersing agent capable of dispersing the slurry, preparing the concentration of the slurry to be about 30%, stirring and scattering at a high speed, controlling the pH value of the slurry to be 7.0-8.0, controlling the specific gravity of the slurry to be 1.13-1.16, ensuring the specific gravity of the classified slurry to be 1.09-1.12 and the classification effect, after the ore pulp enters a horizontal screw centrifuge, the ore pulp is graded by the horizontal screw centrifuge to ensure that the granularity of the ore pulp meets the quality requirement of the produced product, and the ore pulp after high-speed dispersion firstly enters a roughing operation and is subjected to rough concentrationWater-passing hydrocyclone
And
the overflow ore pulp after the rough concentration enters the fine concentration operation and respectively passes through
And
finally, the high-pressure cyclone is subjected to superfine classification
The sorted ore pulp of the ore concentrate is conveyed to a large-scale automatic filter press by a plunger pump for filter pressing and dehydration, the ore pulp with the concentration of 8 percent is filter pressed into a semi-finished product with the water content of 30 percent, the semi-finished product after filter pressing and dehydration is conveyed to a drying rack for natural drying, the water content of the dried finished product is about 5 percent, the dried finished product is conveyed to a milling and packaging workshop, the dried kaolin mud cake is crushed by a crusher to be granular with the grain size of 3cm-5cm, the granular material is lifted to a finished product buffer bin by a lifter and then enters an automatic packaging machine for packaging by an automatic discharging mode, the finished product is conveyed to a swirler by a pipeline, the ore pulp is subjected to primary grain size classification by using the centrifugal force of the swirler, a sedimentation method or a horizontal centrifuge is selected for further grain size classification according to the grain size requirement of the product, the grain size, the purpose that the granularity is stable has been through the right side fixed mounting to the cell body the rose box to and the inside fixed mounting of cell body have the waste water pipe that extends to the rose box inside, and to the outside fixed mounting of rose box the drain pipe, and to the inside fixed mounting of rose box the filter screen, and to the inside of rose box filled the active carbon that is located the filter screen right side, can filter waste water through the filter screen and pass through the active carbon again and adsorb the clearance finally and discharge, reached the effect of environmental protection.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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 given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows: a method for controlling particle size during kaolin production, comprising the steps of:
1) the method comprises the steps of manually selecting miscellaneous stones from massive coal gangues or kaolinite rocks, and stacking the coal gangues or kaolinite rocks with large size difference in the selection process.
2) The selected coal gangue or kaolinite rock is conveyed to a washing frame by using a conveying frame to be washed and desanded, the raw material conveyed to a raw material warehouse needs to be crushed to be less than 5cm, and the crushed raw material is conveyed to a belt conveyor through a vibrating screen and conveyed to a raw material storage bin by the belt conveyor.
3) Raw materials in a raw material storage bin are added into a pulp smashing pool through a plate feeder according to a certain feeding amount, water and a dispersing agent capable of dispersing pulp are added at the same time, the pulp concentration is about 30%, high-speed stirring and scattering are carried out, the pH value of the pulp is controlled to be 7.0-8.0, the specific gravity of the pulp is controlled to be 1.13-1.16, the specific gravity of the pulp after grading is 1.09-1.12 and the grading effect are ensured, and after the pulp enters a horizontal spiral centrifugal machine, the pulp is graded through the horizontal spiral centrifugal machine, so that the granularity of the pulp reaches the quality requirement of a produced product.
4) The ore pulp after high-speed dispersion firstly enters the roughing operation and passes through a hydrocyclone
And
the overflow ore pulp after the rough concentration enters the fine concentration operation and respectively passes through
And
finally, the high-pressure cyclone is subjected to superfine classification
5) The separated ore concentrate pulp is conveyed to a large-scale automatic filter press by a plunger pump for filter pressing and dehydration, and the ore pulp with the concentration of 8 percent is filter-pressed into a semi-finished product with the water content of 30 percent.
6) And (4) conveying the semi-finished product subjected to filter pressing and dehydration to a drying rack for natural drying, wherein the water content of the dried finished product is about 5%.
7) And conveying the dried finished product to a particle rolling and packaging workshop, crushing the dried kaolin mud cake into particles with the particle size of 3-5 cm by using a crusher, lifting the particles to a finished product buffer bin by using a lifter, and then, conveying the particles to an automatic packaging machine for packaging in an automatic unloading mode.
2. The method according to claim 1, wherein the conveyor in step 2 comprises two connecting wheels, the two connecting wheels are in transmission connection through a conveyor belt, a power motor is fixedly mounted on the back of the conveyor, a conveying shaft of the power motor is fixedly connected with the connecting wheels, and a bearing plate located inside the conveyor belt is fixedly mounted on the outside of the conveyor.
The washing frame in the step 2 comprises a frame body, a supporting frame is fixedly mounted at the top of the frame body, a washing pipe is fixedly mounted inside the supporting frame, a water spraying head is fixedly mounted at the bottom of the washing pipe, a water storage tank is fixedly mounted inside the frame body, the water storage tank is fixedly connected with the washing pipe through a guide pipe, and a water suction pump is fixedly mounted outside the guide pipe.
The pulping tank of step 3 comprises a tank body, a filter box is fixedly mounted on the right side of the tank body, a wastewater pipe extending to the inside of the filter box is fixedly mounted in the tank body, a drain pipe is fixedly mounted on the outside of the filter box, a filter screen is fixedly mounted in the filter box, and activated carbon located on the right side of the filter screen is filled in the filter box.
The invention has the beneficial effects that: the method comprises the steps of manually selecting miscellaneous stones from blocky coal gangues or kaolinite, stacking the coal gangues or kaolinite with large size difference in the selection process, conveying the selected coal gangues or kaolinite to a flushing frame by using a conveying frame for flushing and desanding, crushing raw materials conveyed to a raw material warehouse to be less than 5cm, conveying the crushed raw materials to a belt conveyor by using a vibrating screen, conveying the raw materials to a raw material storage bin by using the belt conveyor, adding the raw materials in the raw material storage bin into a pulp smashing pool by using a plate feeder according to a certain feeding amount, simultaneously adding water and a dispersing agent capable of dispersing the pulp, preparing the pulp with the concentration of about 30%, stirring and scattering at a high speed, controlling the pH value of the pulp to be 7.0-8.0, controlling the specific gravity of the pulp to be 1.13-1.16, ensuring the specific gravity and the classification effect after the pulp classification to be 1.09-1.12, after the ore pulp enters a horizontal screw centrifuge, the ore pulp is graded by the horizontal screw centrifuge to ensure that the granularity of the ore pulp meets the quality requirement of the produced product, and the ore pulp after high-speed dispersion firstly enters a roughing operation and passes through a hydrocyclone
And
the overflow ore pulp after the rough concentration enters the fine concentration operation and respectively passes through
And
finally, the high-pressure cyclone is subjected to superfine classification
The separated ore concentrate pulp is conveyed to a large-scale automatic filter press by a plunger pump for filter pressing and dehydration, the pulp with the concentration of 8 percent is filter-pressed into a semi-finished product with the water content of 30 percent, and the semi-finished product after filter pressing and dehydration is conveyed to a drying rack for self-dryingThen drying, the water content of the dried finished product is about 5%, conveying the dried finished product to a particle rolling and packaging workshop, crushing the dried kaolin mud cake by a crusher to particles with the particle size of 3cm-5cm, lifting the particles to a finished product buffer bin by a lifter, then entering an automatic packaging machine for packaging in an automatic discharging mode, conveying the particles to a swirler through a pipeline, carrying out primary particle size classification on ore pulp by using the centrifugal force of the swirler, selecting a sedimentation method or a horizontal screw centrifuge for further particle size classification according to the particle size requirement of the product, ensuring that the particle size of the product meets the quality requirement, achieving the aims of high efficiency and stable particle size, fixedly installing a filter box on the right side of the cell body, fixedly installing a waste water pipe extending to the inside of the filter box on the inside of the cell body, and fixedly installing a drain pipe outside the filter box, and to the inside fixed mounting filter screen of rose box to filled the inside of rose box and been located the active carbon on filter screen right side, can pass through the active carbon adsorption clearance with waste water again through the filter screen and discharge at last, reached the effect of environmental protection.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A method for controlling particle size in the production process of kaolin, which is characterized by comprising the following steps:
1) the method comprises the steps of manually selecting miscellaneous stones from massive coal gangues or kaolinite rocks, and stacking the coal gangues or kaolinite rocks with large size difference in the selection process.
2) The selected coal gangue or kaolinite rock is conveyed to a washing frame by using a conveying frame to be washed and desanded, the raw material conveyed to a raw material warehouse needs to be crushed to be less than 5cm, and the crushed raw material is conveyed to a belt conveyor through a vibrating screen and conveyed to a raw material storage bin by the belt conveyor.
3) Raw materials in a raw material storage bin are added into a pulp smashing pool through a plate feeder according to a certain feeding amount, water and a dispersing agent capable of dispersing pulp are added at the same time, the pulp concentration is about 30%, high-speed stirring and scattering are carried out, the pH value of the pulp is controlled to be 7.0-8.0, the specific gravity of the pulp is controlled to be 1.13-1.16, the specific gravity of the pulp after grading is 1.09-1.12 and the grading effect are ensured, and after the pulp enters a horizontal spiral centrifugal machine, the pulp is graded through the horizontal spiral centrifugal machine, so that the granularity of the pulp reaches the quality requirement of a produced product.
4) The ore pulp after high-speed dispersion firstly enters the roughing operation and passes through a hydrocyclone
And
the overflow ore pulp after the rough concentration enters the fine concentration operation and respectively passes through
And
finally, the high-pressure cyclone is subjected to superfine classification
5) The separated ore concentrate pulp is conveyed to a large-scale automatic filter press by a plunger pump for filter pressing and dehydration, and the ore pulp with the concentration of 8 percent is filter-pressed into a semi-finished product with the water content of 30 percent.
6) And (4) conveying the semi-finished product subjected to filter pressing and dehydration to a drying rack for natural drying, wherein the water content of the dried finished product is about 5%.
7) And conveying the dried finished product to a particle rolling and packaging workshop, crushing the dried kaolin mud cake into particles with the particle size of 3-5 cm by using a crusher, lifting the particles to a finished product buffer bin by using a lifter, and then, conveying the particles to an automatic packaging machine for packaging in an automatic unloading mode.
2. The method according to claim 1, wherein the conveyor in step 2 comprises two connecting wheels, the two connecting wheels are in transmission connection through a conveyor belt, a power motor is fixedly mounted on the back of the conveyor, a conveying shaft of the power motor is fixedly connected with the connecting wheels, and a bearing plate located inside the conveyor belt is fixedly mounted on the outside of the conveyor.
3. The method according to claim 1, wherein the washing rack in step 2 comprises a rack body, a supporting rack is fixedly mounted at the top of the rack body, a washing pipe is fixedly mounted inside the supporting rack, a water spraying head is fixedly mounted at the bottom of the washing pipe, a water storage tank is fixedly mounted inside the rack body, the water storage tank and the washing pipe are fixedly connected through a guide pipe, and a water suction pump is fixedly mounted outside the guide pipe.
4. The method for controlling the particle size in the kaolin production process according to claim 1, wherein the slurry tank of step 3 comprises a tank body, a filter tank is fixedly installed on the right side of the tank body, a wastewater pipe extending to the inside of the filter tank is fixedly installed in the tank body, a drain pipe is fixedly installed on the outside of the filter tank, a filter screen is fixedly installed in the filter tank, and activated carbon located on the right side of the filter screen is filled in the filter tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010614317.XA CN111744659A (en) | 2020-06-30 | 2020-06-30 | Method for controlling particle size in kaolin production process |
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| CN202010614317.XA CN111744659A (en) | 2020-06-30 | 2020-06-30 | Method for controlling particle size in kaolin production process |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1613818A (en) * | 2004-11-09 | 2005-05-11 | 茂名高岭科技有限公司 | Production for superfine kaolin |
| US20050178293A1 (en) * | 2004-02-12 | 2005-08-18 | Nemeh Saad N. | Process and products of chinese kaolin |
| CN101255496A (en) * | 2008-03-18 | 2008-09-03 | 中国高岭土公司 | Method for synchronously reclaiming porcelain clay and rear earth from ionic adsorption type rear earth ore |
| CN101798096A (en) * | 2010-04-01 | 2010-08-11 | 茂名市茂群高岭土有限公司 | Method for preparing kaoline |
| CN103086390A (en) * | 2012-11-16 | 2013-05-08 | 中国地质大学（武汉） | Technique for efficiently removing iron from kaolin |
| CN104556078A (en) * | 2015-01-06 | 2015-04-29 | 山西金宇科林科技有限公司 | Method for producing calcined kaolin with high covering power |
| CN106824509A (en) * | 2017-03-09 | 2017-06-13 | 兖矿北海高岭土有限公司 | A kind of ultrafine kaolin gravity separation method |
-
2020
- 2020-06-30 CN CN202010614317.XA patent/CN111744659A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050178293A1 (en) * | 2004-02-12 | 2005-08-18 | Nemeh Saad N. | Process and products of chinese kaolin |
| CN1613818A (en) * | 2004-11-09 | 2005-05-11 | 茂名高岭科技有限公司 | Production for superfine kaolin |
| CN101255496A (en) * | 2008-03-18 | 2008-09-03 | 中国高岭土公司 | Method for synchronously reclaiming porcelain clay and rear earth from ionic adsorption type rear earth ore |
| CN101798096A (en) * | 2010-04-01 | 2010-08-11 | 茂名市茂群高岭土有限公司 | Method for preparing kaoline |
| CN103086390A (en) * | 2012-11-16 | 2013-05-08 | 中国地质大学（武汉） | Technique for efficiently removing iron from kaolin |
| CN104556078A (en) * | 2015-01-06 | 2015-04-29 | 山西金宇科林科技有限公司 | Method for producing calcined kaolin with high covering power |
| CN106824509A (en) * | 2017-03-09 | 2017-06-13 | 兖矿北海高岭土有限公司 | A kind of ultrafine kaolin gravity separation method |
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