CN111320467B - Porous ceramic plate for solar production of iodized salt and preparation method thereof - Google Patents
Porous ceramic plate for solar production of iodized salt and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a porous ceramic plate for roasting iodine salt and a preparation method thereof, wherein the porous ceramic plate for roasting iodine salt consists of an upper layer, a middle layer and a lower layer, and the porous ceramic plate for roasting iodine salt consists of the following raw materials in parts by weight: 15 to 35 parts of zirconium oxide, 1.5 to 6.5 parts of silicon nitride, 45 to 60 parts of silicon oxide, 1.2 to 2.4 parts of calcium sulfate, 2.2 to 4.2 parts of potassium sulfate, 0.8 to 1.5 parts of carboxymethyl cellulose, 0.4 to 0.8 part of dioctyl sodium sulfosuccinate and 3.0 to 6.0 parts of tributyl citrate. The porous ceramic plate for the solar production of the iodized salt has larger porosity and specific surface area, can absorb more sunlight and heat, is beneficial to air flow, can promote the rapid evaporation of seawater, improves the evaporation efficiency of the seawater salt production, and saves resources and energy consumption.
Description
Technical Field
The invention relates to the technical field of porous ceramic plates, in particular to a porous ceramic plate for solar production of iodized salt and a preparation method thereof.
Background
In the traditional method for preparing salt from seawater, seawater is firstly introduced into an evaporation tank, water is evaporated by utilizing sunlight and wind power, when the seawater is concentrated to a certain degree, the seawater is transferred into a crystallization tank and is continuously exposed to the sun, the seawater is subjected to the processes of saturation, supersaturation, crystallization, precipitation and the like to obtain crude salt, the crude salt can be further refined to obtain salt, and the functional salt and the like are obtained through processing.
It is known that in the process of preparing salt from seawater, many factors affect seawater evaporation, mainly including temperature, area, wind speed and direction, brine concentration, air humidity and the like. When salt is prepared from seawater, evaporation needs to be carried out on the surface of an evaporation pond, the evaporation area is small, and the evaporation area is directly increased in order to enlarge the yield, but the influence of wind speed, wind direction, brine concentration and the like on seawater evaporation cannot be changed.
Chinese patent CN110372010A discloses a method for making salt by solarizing seawater with porous ceramic plates, which specifically comprises the following steps: the porous ceramic plate after absorbing the seawater utilizes the action of sunlight and wind force to evaporate water in pores of the porous ceramic plate until salt is separated out; and adding a certain amount of seawater to repeatedly wash the porous ceramic plate, so that the salt content of the washed seawater reaches 15-26%, and concentrating to prepare salt.
Chinese patent CN104829264B discloses a preparation method of resource-saving porous ceramic, which is mainly applied to the fields of building heat preservation and insulation, sound insulation, filtration, chemical catalyst carriers, light industrial spraying, industrial sewage treatment, chemical fillers, aviation, electronics, medicines and the like. The porous ceramic with excellent cost performance is prepared by taking 30-85% by mass of ceramic material and 70-15% by mass of inorganic salt as main raw materials and performing a series of treatment means such as ball milling, sieving, mixing, molding, drying, sintering, cooling, purifying and the like.
Therefore, in view of the above problems, the present invention provides a porous ceramic plate for solar curing of iodide salt and a method for preparing the same. Has larger specific surface area, and is beneficial to seawater evaporation.
Disclosure of Invention
The invention aims at the problems and provides a porous ceramic plate for solar production of iodized salt and a preparation method thereof.
The technical scheme adopted by the invention for solving the problems is as follows: a porous ceramic plate for roasting iodized salt consists of an upper layer, a middle layer and a lower layer, and is prepared from the following raw materials in parts by weight: 15 to 35 parts of zirconium oxide, 1.5 to 6.5 parts of silicon nitride, 45 to 60 parts of silicon oxide, 1.2 to 2.4 parts of calcium sulfate, 2.2 to 4.2 parts of potassium sulfate, 0.8 to 1.5 parts of carboxymethyl cellulose, 0.4 to 0.8 part of dioctyl sodium sulfosuccinate and 3.0 to 6.0 parts of tributyl citrate.
Further, the porous ceramic plate for the solar preparation of the iodized salt is prepared from the following raw materials in parts by weight: 20 to 30 parts of zirconium oxide, 2.5 to 5.5 parts of silicon nitride, 48 to 55 parts of silicon oxide, 1.4 to 2.0 parts of calcium sulfate, 2.7 to 3.7 parts of potassium sulfate, 1.0 to 1.3 parts of carboxymethyl cellulose, 0.5 to 0.7 part of dioctyl sodium sulfosuccinate and 4.0 to 5.0 parts of tributyl citrate.
Another object of the present invention is to provide a method for preparing a porous ceramic plate for solar curing of iodide salt, comprising the steps of:
step I, uniformly mixing the zirconium oxide, the silicon nitride and the silicon oxide in parts by weight, pre-burning for 3 to 5 hours at the temperature of 880 to 980 ℃, cooling to the temperature of 60 to 80 ℃, ball-milling for 4 to 6 hours at the speed of 50 to 150 revolutions per minute, and sieving by a 200-400-mesh sieve to obtain a raw material I for later use;
step II, uniformly mixing the calcium sulfate and the potassium sulfate in parts by weight, then ball-milling for 2-3 hours at the speed of 50-100 r/min, and sieving with a 400-800 mesh sieve to obtain a raw material II for later use; the powder particle size of the raw material II is smaller than that of the raw material I, so that the raw material II is conveniently and uniformly dispersed in the raw material I.
Step III, stirring and mixing the raw material I obtained in the step I and the raw material II obtained in the step II in a high-speed mixer for 10-15 min to obtain a mixed material, adding water and mixing for 5-15 min again, and then dividing the mixed material into a component A, a component B and a component C for later use;
step IV, mixing the dioctyl sodium sulfosuccinate and the tributyl citrate in parts by weight, dividing the mixture into two parts with equal mass, respectively adding the two parts into the component A and the component C obtained in the step III, uniformly mixing to obtain an upper layer material and a lower layer material, adding the carboxymethyl cellulose in parts by weight into the component B obtained in the step III, uniformly mixing to obtain a middle layer material, then sequentially stacking the lower layer material, the middle layer material and the upper layer material in a mold, and performing compression molding to obtain a primary product;
and V, placing the primary product obtained in the step IV at the temperature of 33-43 ℃ for 6-12 hours, and then drying, firing and cooling to obtain the porous ceramic plate for the solar production of the iodized salt.
Further, in the step I, the cooling rate is 3-5 ℃/min. The cooling rate is controlled to avoid shock cooling, and the mechanical property of the raw material I is influenced.
Further, in the step III, the mass ratio of water to the mixed material is 1: 4.5 to 5.5.
Further, in the step III, the mass ratio of the component A to the component B to the component C is 1: 1.2-1.5: 1.
further, in the step IV, in the compression molding process, the pressure is 8.5MPa to 14.5MPa, and the pressure maintaining time is 20s to 60 s.
Further, in the step V, during the drying process: the temperature is 75-85 ℃, and the heat preservation time is 30-60 min. The porous ceramic plate is kept stand for a period of time before being dried, on one hand, the raw materials can be further contacted and fused, on the other hand, part of water can be volatilized when being sold, the stable shape of the porous ceramic plate is ensured, and the phenomena of splitting, faulting and the like do not occur in the drying process.
Further, in the step V, in the firing process, the temperature is raised to 450-550 ℃ at the speed of 1-5 ℃/min, the temperature is preserved for 60-120 min, then the temperature is raised to 1380-1580 ℃ at the speed of 5-10 ℃/min, and the temperature is preserved for 6-8 h. The temperature-controlled stepwise firing can improve the mechanical stability and strength of the porous ceramic plate, is durable, and can save resources and reduce energy consumption and cost.
The invention has the advantages that:
(1) the porous ceramic plate for the solar production of the iodized salt has larger porosity and specific surface area, can absorb more sunlight and heat, is beneficial to air flow, can promote the rapid evaporation of seawater, improves the evaporation efficiency of the seawater salt production, and saves resources and energy consumption;
(2) the porous ceramic plate for the solar production of the iodized salt has a three-layer structure, and has the advantages of good stability, uniform and stable pores step by step, high mass transfer efficiency, excellent mechanical property, good wear resistance, durability and good economic value;
(3) the porous ceramic plate for the solar production of the iodized salt has the advantages of rich raw material sources, simple preparation process, strong operability and suitability for popularization.
Drawings
In order to more clearly illustrate the advancement of the porous ceramic plate for solar preparation of iodized salt and the method for preparing the same according to the present invention, the results of porosity measurement of the porous ceramic plate for solar preparation of iodized salt prepared in examples 1 to 5 are shown in the drawings. In the drawings:
FIG. 1 shows the results of porosity tests of porous ceramic plates for solar preparation of iodized salt prepared in examples 1 to 5 of the present invention.
Detailed Description
The following detailed description of embodiments of the invention, but the invention can be practiced in many different ways, as defined and covered by the claims.
Example 1
Porous ceramic plate for iodine salt sun-curing
The porous ceramic plate for the solar curing of the iodized salt consists of an upper layer, a middle layer and a lower layer, and the porous ceramic plate for the solar curing of the iodized salt consists of the following raw materials in parts by weight: 15kg of zirconium oxide, 1.5kg of silicon nitride, 45kg of silicon oxide, 1.2kg of calcium sulfate, 2.2kg of potassium sulfate, 0.8kg of carboxymethyl cellulose, 0.4kg of dioctyl sodium sulfosuccinate and 3.0kg of tributyl citrate.
Is prepared by the following steps:
step I, uniformly mixing the zirconium oxide, the silicon nitride and the silicon oxide in parts by weight, pre-burning for 3 hours at the temperature of 880 ℃, cooling to 60 ℃ at the speed of 3 ℃/minute, ball-milling for 4 hours at the speed of 50 r/min, and sieving by a 200-mesh sieve to obtain a raw material I for later use;
step II, uniformly mixing the calcium sulfate and the potassium sulfate in parts by weight, then carrying out ball milling for 2 hours at the speed of 50 revolutions per minute, and sieving by using a 400-mesh sieve to obtain a raw material II for later use;
step III, stirring and mixing the raw material I obtained in the step I and the raw material II obtained in the step II in a high-speed mixer for 10min to obtain a mixed material, adding water and mixing for 5min again, and then dividing the mixed material into a component A, a component B and a component C for later use; wherein the mass ratio of water to the mixed material is 1: 4.5\ of; the mass ratio of the component A to the component B to the component C is 1: 1.2: 1;
step IV, mixing the dioctyl sodium sulfosuccinate and the tributyl citrate in parts by weight, dividing the mixture into two parts with equal mass, respectively adding the two parts into the component A and the component C obtained in the step III, uniformly mixing to prepare an upper layer material and a lower layer material, adding the carboxymethyl cellulose in parts by weight into the component B obtained in the step III, uniformly mixing to prepare a middle layer material, then sequentially stacking the lower layer material, the middle layer material and the upper layer material in a mold, and maintaining the pressure for 20s under the condition that the pressure is 8.5MPa to obtain a primary product;
and V, placing the primary product obtained in the step IV at the temperature of 33 ℃ for 6 hours, then, preserving heat and drying at the temperature of 75 ℃ for 30 minutes, then, heating to 450 ℃ at the speed of 1 ℃/minute, preserving heat for 60 minutes, then heating to 1380 ℃ at the speed of 5 ℃/minute, preserving heat for 6 hours, and cooling to obtain the porous ceramic plate for drying the iodized salt in the sun.
The porous ceramic plate for solar curing of iodide salt prepared in the above example was tested to have a porosity of 73.5% and an average pore diameter of 0.05 mm.
Example 2
Porous ceramic plate for iodine salt sun-curing
The porous ceramic plate for the solar curing of the iodized salt consists of an upper layer, a middle layer and a lower layer, and the porous ceramic plate for the solar curing of the iodized salt consists of the following raw materials in parts by weight: 35kg of zirconium oxide, 6.5kg of silicon nitride, 60kg of silicon oxide, 2.4kg of calcium sulfate, 4.2kg of potassium sulfate, 1.5kg of carboxymethyl cellulose, 0.8kg of dioctyl sodium sulfosuccinate and 6.0kg of tributyl citrate.
Is prepared by the following steps:
step I, uniformly mixing the zirconium oxide, the silicon nitride and the silicon oxide in parts by weight, pre-burning for 5 hours at the temperature of 980 ℃, cooling to 80 ℃ at the speed of 5 ℃/minute, ball-milling for 6 hours at the speed of 150 rpm, and sieving by a 400-mesh sieve to obtain a raw material I for later use;
step II, uniformly mixing the calcium sulfate and the potassium sulfate in parts by weight, then carrying out ball milling for 3 hours at the speed of 100 revolutions per minute, and sieving by using a 800-mesh sieve to obtain a raw material II for later use;
step III, stirring and mixing the raw material I obtained in the step I and the raw material II obtained in the step II in a high-speed mixer for 15min to obtain a mixed material, adding water and mixing for 15min again, and then dividing the mixed material into a component A, a component B and a component C for later use; wherein the mass ratio of water to the mixed material is 1: 5.5; the mass ratio of the component A to the component B to the component C is 1: 1.5: 1;
step IV, mixing the dioctyl sodium sulfosuccinate and the tributyl citrate in parts by weight, dividing the mixture into two parts with equal mass, respectively adding the two parts into the component A and the component C obtained in the step III, uniformly mixing to prepare an upper layer material and a lower layer material, adding the carboxymethyl cellulose in parts by weight into the component B obtained in the step III, uniformly mixing to prepare a middle layer material, then sequentially stacking the lower layer material, the middle layer material and the upper layer material in a mold, and maintaining the pressure for 60 seconds under the condition that the pressure is 14.5MPa to obtain a primary product;
and V, placing the primary product obtained in the step IV at the temperature of 43 ℃ for 12 hours, then, preserving heat and drying at the temperature of 85 ℃ for 60 minutes, then, heating to 550 ℃ at the speed of 5 ℃/minute, preserving heat for 120 minutes, then, heating to 1580 ℃ at the speed of 10 ℃/minute, preserving heat for 8 hours, and cooling to obtain the porous ceramic plate for the solar curing of the iodized salt.
The porous ceramic plate for solar baking of iodized salt prepared in the above example was tested to have a porosity of 77.5% and an average pore diameter of 0.08 mm.
Example 3
Porous ceramic plate for iodine salt sun-curing
The porous ceramic plate for the solar curing of the iodized salt consists of an upper layer, a middle layer and a lower layer, and the porous ceramic plate for the solar curing of the iodized salt consists of the following raw materials in parts by weight: 20kg of zirconium oxide, 2.5kg of silicon nitride, 48kg of silicon oxide, 1.4kg of calcium sulfate, 2.7kg of potassium sulfate, 1.0kg of carboxymethyl cellulose, 0.5kg of dioctyl sodium sulfosuccinate and 4.0kg of tributyl citrate.
Is prepared by the following steps:
step I, uniformly mixing the zirconium oxide, the silicon nitride and the silicon oxide in parts by weight, pre-burning for 3.5 hours at the temperature of 900 ℃, cooling to 65 ℃ at the speed of 5 ℃/minute, ball-milling for 4.5 hours at the speed of 80 rpm, and sieving by a 250-mesh sieve to obtain a raw material I for later use;
step II, uniformly mixing the calcium sulfate and the potassium sulfate in parts by weight, then carrying out ball milling for 3 hours at the speed of 60 revolutions per minute, and sieving by using a 500-mesh sieve to obtain a raw material II for later use;
step III, stirring and mixing the raw material I obtained in the step I and the raw material II obtained in the step II in a high-speed mixer for 11min to obtain a mixed material, adding water and mixing for 8min again, and then dividing the mixed material into a component A, a component B and a component C for later use; wherein the mass ratio of water to the mixed material is 1: 4.8; the mass ratio of the component A to the component B to the component C is 1: 1.3: 1;
step IV, mixing the dioctyl sodium sulfosuccinate and the tributyl citrate in parts by weight, dividing the mixture into two parts with equal mass, respectively adding the two parts into the component A and the component C obtained in the step III, uniformly mixing to prepare an upper layer material and a lower layer material, adding the carboxymethyl cellulose in parts by weight into the component B obtained in the step III, uniformly mixing to prepare a middle layer material, then sequentially stacking the lower layer material, the middle layer material and the upper layer material in a mold, and maintaining the pressure for 30s under the condition that the pressure is 10.5MPa to obtain a primary product;
and V, placing the primary product obtained in the step IV at the temperature of 35 ℃ for 8 hours, then, preserving heat and drying at the temperature of 77 ℃ for 40 minutes, then, heating to 480 ℃ at the speed of 2 ℃/minute, preserving heat for 70 minutes, then heating to 1430 ℃ at the speed of 6 ℃/minute, preserving heat for 6.5 hours, and cooling to obtain the porous ceramic plate for the solar drying of the iodized salt.
The porous ceramic plate for solar baking of iodized salt prepared in the above example was tested to have a porosity of 83.5% and an average pore diameter of 0.06 mm.
Example 4
Porous ceramic plate for iodine salt sun-curing
The porous ceramic plate for the solar curing of the iodized salt consists of an upper layer, a middle layer and a lower layer, and the porous ceramic plate for the solar curing of the iodized salt consists of the following raw materials in parts by weight: 30kg of zirconium oxide, 5.5kg of silicon nitride, 55kg of silicon oxide, 2.0kg of calcium sulfate, 3.7kg of potassium sulfate, 1.3kg of carboxymethyl cellulose, 0.7kg of dioctyl sodium sulfosuccinate and 5.0kg of tributyl citrate.
Is prepared by the following steps:
step I, uniformly mixing the zirconium oxide, the silicon nitride and the silicon oxide in parts by weight, pre-burning for 4.5 hours at the temperature of 960 ℃, cooling to 75 ℃ at the speed of 3 ℃/min, ball-milling for 5.5 hours at the speed of 130 r/min, and sieving with a 350-mesh sieve to obtain a raw material I for later use;
step II, uniformly mixing the calcium sulfate and the potassium sulfate in parts by weight, then carrying out ball milling for 2 hours at a speed of 90 revolutions per minute, and sieving by using a 700-mesh sieve to obtain a raw material II for later use;
step III, stirring and mixing the raw material I obtained in the step I and the raw material II obtained in the step II in a high-speed mixer for 14min to obtain a mixed material, adding water and mixing for 13min again, and then dividing the mixed material into a component A, a component B and a component C for later use; wherein the mass ratio of water to the mixed material is 1: 5.3; the mass ratio of the component A to the component B to the component C is 1: 1.4: 1;
step IV, mixing the dioctyl sodium sulfosuccinate and the tributyl citrate in parts by weight, dividing the mixture into two parts with equal mass, respectively adding the two parts into the component A and the component C obtained in the step III, uniformly mixing to prepare an upper layer material and a lower layer material, adding the carboxymethyl cellulose in parts by weight into the component B obtained in the step III, uniformly mixing to prepare a middle layer material, then sequentially stacking the lower layer material, the middle layer material and the upper layer material in a mold, and maintaining the pressure for 50s under the condition that the pressure is 12.5MPa to obtain a primary product;
and V, placing the primary product obtained in the step IV at the temperature of 40 ℃ for 10 hours, then, preserving heat and drying at the temperature of 82 ℃ for 50 minutes, then, heating to 530 ℃ at the speed of 4 ℃/minute, preserving heat for 110 minutes, then heating to 1520 ℃ at the speed of 9 ℃/minute, preserving heat for 7.5 hours, and cooling to obtain the porous ceramic plate for the solar drying of the iodized salt.
The porous ceramic plate for solar baking of iodized salt prepared in the above example was tested to have a porosity of 84.0% and an average pore diameter of 0.07 mm.
Example 5
Porous ceramic plate for iodine salt sun-curing
The porous ceramic plate for the solar curing of the iodized salt consists of an upper layer, a middle layer and a lower layer, and the porous ceramic plate for the solar curing of the iodized salt consists of the following raw materials in parts by weight: 25kg of zirconium oxide, 4.0kg of silicon nitride, 50kg of silicon oxide, 1.7kg of calcium sulfate, 3.2kg of potassium sulfate, 1.2kg of carboxymethyl cellulose, 0.6kg of dioctyl sodium sulfosuccinate and 4.5kg of tributyl citrate.
Is prepared by the following steps:
step I, uniformly mixing the zirconium oxide, the silicon nitride and the silicon oxide in parts by weight, pre-burning for 4 hours at the temperature of 930 ℃, cooling to 70 ℃ at the speed of 4 ℃/minute, ball-milling for 5 hours at the speed of 100 r/min, and sieving by a 300-mesh sieve to obtain a raw material I for later use;
step II, uniformly mixing the calcium sulfate and the potassium sulfate in parts by weight, then carrying out ball milling for 2.5 hours at the speed of 80 revolutions per minute, and sieving by using a 600-mesh sieve to obtain a raw material II for later use;
step III, stirring and mixing the raw material I obtained in the step I and the raw material II obtained in the step II in a high-speed mixer for 13min to obtain a mixed material, adding water and mixing for 10min again, and then dividing the mixed material into a component A, a component B and a component C for later use; wherein the mass ratio of water to the mixed material is 1: 5.0; the mass ratio of the component A to the component B to the component C is 1: 1.3: 1;
step IV, mixing the dioctyl sodium sulfosuccinate and the tributyl citrate in parts by weight, dividing the mixture into two parts with equal mass, respectively adding the two parts into the component A and the component C obtained in the step III, uniformly mixing to prepare an upper layer material and a lower layer material, adding the carboxymethyl cellulose in parts by weight into the component B obtained in the step III, uniformly mixing to prepare a middle layer material, then sequentially stacking the lower layer material, the middle layer material and the upper layer material in a mold, and maintaining the pressure for 40s under the condition that the pressure is 11.5MPa to obtain a primary product;
and V, placing the primary product obtained in the step IV at 38 ℃ for 9 hours, then, preserving heat and drying at 80 ℃ for 45 minutes, then, heating to 500 ℃ at the speed of 3 ℃/minute, preserving heat for 90 minutes, then heating to 1480 ℃ at the speed of 8 ℃/minute, preserving heat for 7 hours, and cooling to obtain the porous ceramic plate for drying the iodized salt in the sun.
The porous ceramic plate for solar baking of iodized salt prepared in the above example was tested to have a porosity of 86.0% and an average pore diameter of 0.07 mm.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. The porous ceramic plate for the solar curing of the iodized salt consists of an upper layer, a middle layer and a lower layer, and is characterized by comprising the following raw materials in parts by weight: 20 to 30 parts of zirconium oxide, 2.5 to 5.5 parts of silicon nitride, 48 to 55 parts of silicon oxide, 1.4 to 2.0 parts of calcium sulfate, 2.7 to 3.7 parts of potassium sulfate, 1.0 to 1.3 parts of carboxymethyl cellulose, 0.5 to 0.7 part of dioctyl sodium sulfosuccinate and 4.0 to 5.0 parts of tributyl citrate; the preparation method of the porous ceramic plate for the solar curing of the iodized salt comprises the following steps:
step I, uniformly mixing the zirconium oxide, the silicon nitride and the silicon oxide in parts by weight, pre-burning for 3 to 5 hours at the temperature of 880 to 980 ℃, cooling to the temperature of 60 to 80 ℃, ball-milling for 4 to 6 hours at the speed of 50 to 150 revolutions per minute, and sieving by a 200-400-mesh sieve to obtain a raw material I for later use;
step II, uniformly mixing the calcium sulfate and the potassium sulfate in parts by weight, then ball-milling for 2-3 hours at the speed of 50-100 r/min, and sieving with a 400-800 mesh sieve to obtain a raw material II for later use;
step III, stirring and mixing the raw material I obtained in the step I and the raw material II obtained in the step II in a high-speed mixer for 10-15 min to obtain a mixed material, adding water and mixing for 5-15 min again, and then dividing the mixed material into a component A, a component B and a component C for later use;
step IV, mixing the dioctyl sodium sulfosuccinate and the tributyl citrate in parts by weight, dividing the mixture into two parts with equal mass, respectively adding the two parts into the component A and the component C obtained in the step III, uniformly mixing to obtain an upper layer material and a lower layer material, adding the carboxymethyl cellulose in parts by weight into the component B obtained in the step III, uniformly mixing to obtain a middle layer material, then sequentially stacking the lower layer material, the middle layer material and the upper layer material in a mold, and performing compression molding to obtain a primary product;
v, placing the primary product obtained in the step IV at the temperature of 33-43 ℃ for 6-12 hours, and then drying, firing and cooling to obtain the porous ceramic plate for the solar preparation of the iodized salt;
in the step III, the mass ratio of the water to the mixed material is 1: 4.5-5.5;
in the step III, the mass ratio of the component A to the component B to the component C is 1: 1.2-1.5: 1;
in the step V, in the firing process, the temperature is raised to 450-550 ℃ at the speed of 1-5 ℃/min, the temperature is preserved for 60-120 min, then the temperature is raised to 1380-1580 ℃ at the speed of 5-10 ℃/min, and the temperature is preserved for 6-8 h;
in the step I, the cooling rate is 3-5 ℃/min;
in the step IV, in the compression molding process, the pressure is 8.5MPa to 14.5MPa, and the pressure maintaining time is 20s to 60 s;
in the step V, in the drying process: the temperature is 75-85 ℃, and the heat preservation time is 30-60 min.
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| CN1636876A (en) * | 2004-12-14 | 2005-07-13 | 天津大学 | Capillary porous material reinforced water evaporating and chromatographic separating process |
| CN104829264A (en) * | 2014-02-08 | 2015-08-12 | 南京金合能源材料有限公司 | Preparation method for resource-saving porous ceramic |
| US20160316819A1 (en) * | 2015-04-30 | 2016-11-03 | Shenzhen Smoore Technology Limited | Porous ceramic material, manufacturing method and use thereof |
| CN110372010A (en) * | 2019-08-08 | 2019-10-25 | 青岛大学 | A method of seawater, which is carried out, using porous ceramic plate evaporates brine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1636876A (en) * | 2004-12-14 | 2005-07-13 | 天津大学 | Capillary porous material reinforced water evaporating and chromatographic separating process |
| CN104829264A (en) * | 2014-02-08 | 2015-08-12 | 南京金合能源材料有限公司 | Preparation method for resource-saving porous ceramic |
| US20160316819A1 (en) * | 2015-04-30 | 2016-11-03 | Shenzhen Smoore Technology Limited | Porous ceramic material, manufacturing method and use thereof |
| CN110372010A (en) * | 2019-08-08 | 2019-10-25 | 青岛大学 | A method of seawater, which is carried out, using porous ceramic plate evaporates brine |
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