CN111875353B - Temperature-adjusting slurry for improving firing temperature of spot brick, spot brick and manufacturing method thereof - Google Patents
Temperature-adjusting slurry for improving firing temperature of spot brick, spot brick and manufacturing method thereof Download PDFInfo
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- CN111875353B CN111875353B CN202010552590.4A CN202010552590A CN111875353B CN 111875353 B CN111875353 B CN 111875353B CN 202010552590 A CN202010552590 A CN 202010552590A CN 111875353 B CN111875353 B CN 111875353B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/32—Burning methods
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/04—Clay; Kaolin
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Abstract
The invention discloses a temperature-adjusting slurry for improving the firing temperature of a spot brick, the spot brick and a manufacturing method thereof, wherein the temperature-adjusting slurry comprises 48-52% of washing mud by mass percent; 13 to 17 percent of Jintai ball soil; 33 to 37 percent of Nanning white mud. The mud raw materials with high aluminum content, low magnesium content, low iron content and good plasticity are adopted in the temperature-adjusting slurry, so that the spot bricks are influenced by the added spot particles, the firing temperature of the spot bricks is lowered, and the firing temperature of the spot bricks is effectively increased by adding the temperature-adjusting slurry, so that the stability of the firing temperature of the spot bricks is maintained, the product color repeatability among different batches of spot bricks is improved, the production continuity is ensured, and the production efficiency is improved; the method can stabilize the firing temperature of the spot brick, simultaneously does not influence the whiteness of the spot brick, and can synchronously improve the strength of the spot brick.
Description
Technical Field
The invention relates to the field of production of building ceramic spot bricks, in particular to temperature-adjusting slurry for improving the firing temperature of spot bricks, a spot brick and a manufacturing method thereof.
Background
With the development of architectural ceramic industry, architectural ceramic decoration technology is no longer limited to brick surface pattern decoration, and spot bricks (spot ceramic bricks, which are prepared by adding spot particles with various colors into a blank) gradually occupy a trend.
In the production process of the existing spot brick, spot particles with different colors are required to be added into basic slurry of the spot brick, and the added spot particles can change the chemical component content of the basic slurry, so that the firing temperature (blank temperature) of the spot brick is influenced, and the firing temperature of the spot brick is reduced; furthermore, the kiln temperature required by different batches of spot bricks is different due to the fluctuation of the firing temperature of the spot bricks, so that the production stability and continuity are influenced, and the kiln temperature needs to be adjusted frequently; however, the adjustment of the kiln temperature has certain time delay and fluctuation, and the adjustment to different kiln temperatures corresponding to different firing temperatures is difficult to accurately and quickly, so that the production efficiency of the spot bricks is inevitably affected, the product yield is reduced, and the product colors of different batches of spot brick products are also different.
Therefore, it is an urgent technical problem to provide a method for preventing the firing temperature of the spot brick from being lowered by the added spot particles.
The prior art has defects and needs to be improved and developed.
Disclosure of Invention
In view of the above-mentioned disadvantages of the prior art, the present invention aims to provide a temperature control slurry for raising the firing temperature of a spot brick, a spot brick and a method for manufacturing the same, which aims to solve the problem that the firing temperature of the spot brick is too low due to the spot particles in the production of the spot brick.
In order to solve the technical problems, the invention provides the following technical scheme: the temperature-adjusting slurry for improving the firing temperature of the spot brick comprises the following raw materials in percentage by mass:
48-52% of washing mud; 13 to 17 percent of Jintai ball soil; 33 to 37 percent of Nanning white mud.
Further, the temperature-adjusting slurry comprises the following raw materials in percentage by mass:
washing with water to obtain 50% of mud; 15% of Jintai ball soil; 35% of Nanning white mud.
Further, the chemical composition of the temperature-adjusting slurry comprises the following components in percentage by mass:
SiO2 55.61％；Al2O3 30.05％；Fe2O3 1.15％；CaO 0.20％；MgO 0.28％；K2O 2.22％；Na20.40 percent of O; the ignition loss is 10.09%.
Further, the chemical composition of the washing mud comprises, by mass:
SiO2 48.58％；Al2O3 34.91％；Fe2O3 1.36％；CaO 0.20％；MgO 0.65％；K2O 1.71％；Na20.19 percent of O; the loss on ignition is 12.40 percent.
Further, the chemical composition of the Jintai ball clay comprises the following components in percentage by mass:
SiO2 50.63％；Al2O3 33.42％；Fe2O3 1.19％；CaO 0.15％；MgO 0.41％；K2O 1.62％；Na20.23 percent of O; the loss on ignition is 12.35 percent.
Further, the chemical composition of the south China white mud comprises the following components in percentage by mass:
SiO2 63.55％；Al2O3 24.50％；Fe2O3 0.95％；CaO 0.20％；MgO 0.44％；K2O 1.56％；Na20.55 percent of O; the loss on ignition is 8.25%.
Further, the temperature adjusting slurry is processed through a ball milling process;
the glaze slurry fineness of the temperature-adjusting slurry is calculated by a 325-mesh sieve, and the screen residue is 1.0-1.4%;
the viscosity of the temperature adjusting slurry is 40-100 seconds;
the specific gravity of the temperature-adjusting pulp is not less than 1.67;
the moisture content in the temperature-adjusting pulp is 39% -41%.
Further, the addition amount of the temperature adjusting pulp is 0.15-2.0% by mass percent.
In order to solve the above technical problems, the present invention provides another technical solution as follows: a method for manufacturing a spot brick, wherein the method for manufacturing the spot brick comprises the step of adding the temperature-adjusting slurry for increasing the firing temperature of the spot brick.
In order to solve the above technical problems, the present invention provides another technical solution as follows: a spot brick, wherein the spot brick comprises a temperature-regulating slurry for increasing the firing temperature of the spot brick as described above.
Has the advantages that: the invention provides a temperature-adjusting slurry for improving the firing temperature of a spot brick, the spot brick and a manufacturing method thereof, wherein the raw material of the temperature-adjusting slurry comprises 48-52% of washing mud by mass percent; 13 to 17 percent of Jintai ball soil; 33 to 37 percent of Nanning white mud. The mud raw materials with high aluminum content, low magnesium content, low iron content and good plasticity are adopted in the temperature-adjusting slurry, so that the spot bricks are influenced by the added spot particles, the firing temperature of the spot bricks is lowered, and the firing temperature of the spot bricks is effectively increased by adding the temperature-adjusting slurry, so that the stability of the firing temperature of the spot bricks is maintained, the product color repeatability among different batches of spot bricks is improved, the production continuity is ensured, and the production efficiency is improved; the method can stabilize the firing temperature of the spot brick, does not influence the whiteness of the spot brick, and can synchronously improve the strength of the spot brick.
Detailed Description
The present invention provides a temperature control slurry for raising a firing temperature of a spot brick, a spot brick and a method for producing the same, and the present invention will be described in further detail below in order to make the object, technical solution and effect of the present invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
With the development of the architectural ceramic industry, the architectural ceramic decoration technology is no longer limited to tile surface pattern decoration, and the color flow of spot bricks (spot ceramic tiles, spot particles with various colors are added into blanks) and full-body bricks (the colors of the blanks and the tile surfaces are kept consistent) begins to gradually occupy the trend. As for the spot brick, the product types are more, and the frequent fluctuation of the firing temperature (the firing temperature is reduced) is caused by the added spot particles in the production process, thereby influencing the production stability and continuity. In particular, several problems often encountered in the production of spot tiles are:
1) Temperature fluctuation of base slurry
In order to deal with the spot bricks with different colors, the basic slurry of the spot bricks is divided into the following components according to the whiteness difference: dark white, light white, super white and high white. In actual production, the reserves of slurry with various whiteness need to be adjusted according to the scheduling (production plan), but are limited by the number of slurry pools and the number of ball mills, and balls are frequently changed to mill different formulas, so that the temperature difference between different batches of the same basic slurry is large.
2) The firing temperature fluctuation of the spot brick caused by adding spot particles with different colors
In the production process of the spot brick, spot particles with various colors are required to be added into the basic slurry of the spot brick, and the added spot particles can change the chemical components and the content of a green body of the spot brick and further change the firing temperature of the spot brick.
In conclusion, in the production process of the spot brick, spot particles with different colors need to be added into the basic slurry of the spot brick, and the added spot particles can change the chemical component content of the basic slurry, so that the firing temperature (blank temperature) of the spot brick is influenced, and the firing temperature of the spot brick is reduced; furthermore, the kiln temperature required by different batches of spot bricks is different due to the fluctuation of the firing temperature of the spot bricks, so that the production stability and continuity are influenced, and the kiln temperature needs to be adjusted frequently; however, the adjustment of the kiln temperature has certain time delay and fluctuation, and the adjustment to different kiln temperatures corresponding to different firing temperatures is difficult to accurately and quickly, so that the production efficiency of the spot bricks is inevitably affected, the product yield is reduced, and the product colors of different batches of spot brick products are also different.
The invention provides temperature-adjusting slurry for improving the firing temperature of a spot brick, the spot brick and a manufacturing method thereof based on the technical problems in the prior art; the temperature-adjusting slurry comprises the following raw materials in percentage by mass: 48-52% of washing mud; 13 to 17 percent of Jintai ball soil; 33 to 37 percent of Nanning white mud. It can be understood that the mud raw materials with high aluminum content, low magnesium content, low iron content and good plasticity are adopted in the temperature-adjusting slurry provided by the invention, so that the firing temperature of the spot brick is effectively increased by adding the temperature-adjusting slurry after the firing temperature of the spot brick is lowered due to the influence of the added spot particles, the stability of the firing temperature of the spot brick is maintained, the product color repeatability among different batches of spot bricks is improved, the production continuity is ensured, and the production efficiency is improved; the strength of the spot brick can be simultaneously improved without affecting the whiteness of the spot brick while stabilizing the firing temperature of the spot brick, and the following examples are specifically referred to.
The invention provides temperature-adjusting slurry for improving the firing temperature of a spot brick, wherein the temperature-adjusting slurry comprises the following raw materials in percentage by mass:
48-52% of washing mud; 13 to 17 percent of Jintai ball soil; 33 to 37 percent of Nanning white mud.
It can be understood that the temperature-adjusting slurry provided by the invention adopts the mud raw materials with high aluminum content, low magnesium content, low iron content and good plasticity, so that the firing temperature of the spot brick is effectively increased by adding the temperature-adjusting slurry after the firing temperature of the spot brick is lowered due to the influence of the added spot particles, thereby maintaining the stability of the firing temperature of the spot brick, improving the product color repeatability among different batches of spot bricks, ensuring the production continuity and improving the production efficiency; the method can stabilize the firing temperature of the spot brick, simultaneously does not influence the whiteness of the spot brick, and can synchronously improve the strength of the spot brick.
In some preferred embodiments, the raw materials of the temperature-adjusting slurry comprise, by mass:
washing with water to obtain 50% of mud; 15% of Jintai ball soil; 35% of Nanning white mud.
In some preferred embodiments, the chemical composition of the temperature-adjusting slurry comprises, in mass percent:
SiO2 55.61％；Al2O3 30.05％；Fe2O3 1.15％；CaO 0.20％；MgO 0.28％；K2O 2.22％；Na20.40 percent of O; the loss on ignition is 10.09%.
In some preferred embodiments, the chemical composition of the washing mud comprises, in mass percent:
SiO2 48.58％；Al2O3 34.91％；Fe2O3 1.36％；CaO 0.20％；MgO 0.65％；K2O 1.71％；Na20.19 percent of O; the loss on ignition is 12.40 percent.
In some preferred embodiments, the chemical composition of the Jintai ball clay comprises, in mass percent:
SiO2 50.63％；Al2O3 33.42％；Fe2O3 1.19％；CaO 0.15％；MgO 0.41％；K2O 1.62％；Na20.23 percent of O; the loss on ignition is 12.35 percent.
In some preferred embodiments, the chemical composition of the south China white mud comprises, in mass percent:
SiO2 63.55％；Al2O3 24.50％；Fe2O3 0.95％；CaO 0.20％；MgO 0.44％；K2O 1.56％；Na20.55 percent of O; the loss on ignition is 8.25%.
In some preferred embodiments, the conditioning slurry is processed by a ball milling process;
the glaze slurry fineness of the temperature-adjusting slurry is calculated by a 325-mesh sieve, and the screen residue is 1.0-1.4%;
the viscosity of the temperature adjusting slurry is 40-100 seconds;
the specific gravity of the temperature-adjusting pulp is not less than 1.67;
the moisture content in the temperature-adjusting pulp is 39% -41%.
In some preferred embodiments, the addition amount of the temperature-adjusting slurry is 0.15-2.0% by mass percentage.
The invention also provides a method for manufacturing the spot brick, wherein the method for manufacturing the spot brick comprises the step of adding the temperature-adjusting slurry for increasing the firing temperature of the spot brick.
It can be understood that, in the method for manufacturing the spot brick provided by the present invention, the step of adding the temperature-adjusting slurry in the above embodiment of the present invention is added, so that in the method for manufacturing the spot brick, the kiln temperature does not need to be adjusted according to the firing temperature of the spot brick after adding the spot particles, the stability of the firing temperature of the spot brick can be maintained only by adding the temperature-adjusting slurry, the spot brick can be continuously produced without adjusting the kiln temperature, and the spot bricks in different batches have good repeatability, good product color and high yield.
The invention also provides a spot brick, wherein the spot brick comprises the temperature-adjusting slurry for increasing the firing temperature of the spot brick.
It can be understood that the spot brick provided by the invention is added with the temperature-adjusting slurry, so that after the spot brick is added with the spot particles for reducing the firing temperature of the spot brick, mud raw materials with high aluminum content, low magnesium content, low iron content and good plasticity are added, and the spot brick is influenced by the added spot particles, so that the firing temperature of the spot brick is lowered, the firing temperature of the spot brick is effectively increased by adding the temperature-adjusting slurry, the stability of the firing temperature of the spot brick is maintained, the product color repeatability of the spot bricks in different batches is improved, the production continuity is ensured, and the production efficiency is improved; the method can stabilize the firing temperature of the spot brick, does not influence the whiteness of the spot brick, and can synchronously improve the strength of the spot brick.
The present invention will be described in further detail with reference to specific examples.
The first embodiment is as follows:
the embodiment provides temperature adjusting slurry for improving firing temperature of spot bricks, wherein the temperature adjusting slurry comprises the following raw materials in percentage by mass:
48-52% of washing mud; 13 to 17 percent of Jintai ball soil; 33 to 37 percent of Nanning white mud.
It can be understood that the temperature-adjusting slurry provided by the invention adopts the mud raw materials with high aluminum content, low magnesium content, low iron content and good plasticity, so that the firing temperature of the spot brick is effectively increased by adding the temperature-adjusting slurry after the firing temperature of the spot brick is lowered due to the influence of the added spot particles, thereby maintaining the stability of the firing temperature of the spot brick, improving the product color repeatability among different batches of spot bricks, ensuring the production continuity and improving the production efficiency; the method can stabilize the firing temperature of the spot brick, simultaneously does not influence the whiteness of the spot brick, and can synchronously improve the strength of the spot brick.
Example two:
the embodiment provides a temperature-adjusting slurry for improving the firing temperature of a spot brick, which is different from the embodiment in that: the temperature-adjusting slurry comprises the following raw materials in percentage by mass:
washing with water to obtain 50% of mud; 15% of Jintai ball soil; 35% of Nanning white mud.
It can be understood that the temperature-adjusting slurry provided by the invention adopts the mud raw materials with high aluminum content, low magnesium content, low iron content and good plasticity, so that the firing temperature of the spot brick is effectively increased by adding the temperature-adjusting slurry after the firing temperature of the spot brick is lowered due to the influence of the added spot particles, thereby maintaining the stability of the firing temperature of the spot brick, improving the product color repeatability among different batches of spot bricks, ensuring the production continuity and improving the production efficiency; the method can stabilize the firing temperature of the spot brick, simultaneously does not influence the whiteness of the spot brick, and can synchronously improve the strength of the spot brick.
Example three:
the embodiment provides a temperature adjusting slurry for improving the firing temperature of a spot brick, and the chemical composition of the temperature adjusting slurry comprises the following components in percentage by mass:
SiO2 55.61％；Al2O3 30.05％；Fe2O3 1.15％；CaO 0.20％；MgO 0.28％；K2O 2.22％；Na20.40 percent of O; the loss on ignition is 10.09%.
Example four:
the embodiment provides a temperature adjusting slurry for improving the firing temperature of a spot brick, and the temperature adjusting slurry comprises the following raw materials in percentage by mass:
48-52% of washing mud; 13 to 17 percent of Jintai ball soil; 33 to 37 percent of Nanning white mud.
The chemical composition of the washing mud comprises the following components in percentage by mass:
SiO2 48.58％；Al2O3 34.91％；Fe2O3 1.36％；CaO 0.20％；MgO 0.65％；K2O 1.71％；Na20.19 percent of O; the loss on ignition is 12.40 percent.
Example five:
the embodiment provides a temperature adjusting slurry for improving the firing temperature of a spot brick, and the temperature adjusting slurry comprises the following raw materials in percentage by mass:
48-52% of washing mud; 13 to 17 percent of Jintai ball soil; 33 to 37 percent of Nanning white mud.
The chemical composition of the Jintai ball clay comprises the following components in percentage by mass:
SiO2 50.63％；Al2O3 33.42％；Fe2O3 1.19％；CaO 0.15％；MgO 0.41％；K2O 1.62％；Na20.23 percent of O; the loss on ignition is 12.35 percent.
Example six:
the embodiment provides a temperature adjusting slurry for improving the firing temperature of a spot brick, and the temperature adjusting slurry comprises the following raw materials in percentage by mass:
48-52% of washing mud; 13 to 17 percent of Jintai ball soil; 33 to 37 percent of Nanning white mud.
The chemical composition of the Nanning white mud comprises the following components in percentage by mass:
SiO2 63.55％；Al2O3 24.50％；Fe2O3 0.95％；CaO 0.20％；MgO 0.44％；K2O 1.56％；Na20.55 percent of O; the loss on ignition is 8.25%.
Example seven:
the embodiment provides temperature adjusting slurry for improving the firing temperature of spot bricks, and the difference between the temperature adjusting slurry and the embodiment is that the temperature adjusting slurry is processed by a ball milling process;
the glaze slurry fineness of the temperature-adjusting slurry is calculated by a 325-mesh sieve, and the screen residue is 1.0-1.4%;
the viscosity of the temperature-adjusting slurry is 40-100 seconds;
the specific gravity of the temperature-adjusting pulp is not less than 1.67;
the moisture content in the temperature-adjusting pulp is 39% -41%.
Example eight:
the embodiment provides a temperature adjusting slurry for improving the firing temperature of a spot brick, and the temperature adjusting slurry comprises the following raw materials in percentage by mass:
48-52% of washing mud; 13 to 17 percent of Jintai ball soil; 33 to 37 percent of Nanning white mud.
The addition amount of the temperature-adjusting slurry is 0.15-2.0% by mass percent.
It can be understood that the addition amount of the spot temperature adjusting slurry in the basic slurry of the spot brick is 0.15-2.0 percent by mass percent.
Example nine:
the method for manufacturing the spot brick comprises the step of adding the temperature-adjusting slurry for increasing the firing temperature of the spot brick.
The addition amount of the spot temperature adjusting slurry in the basic slurry of the spot brick is 0.15-2.0% by mass percent.
It can be understood that the step of adding the temperature-adjusting slurry in the above embodiment of the present invention is added in the method for manufacturing the spot brick, so that the kiln temperature does not need to be adjusted according to the firing temperature of the spot brick to which the spot particles are added, the stability of the firing temperature of the spot brick can be maintained only by adding the temperature-adjusting slurry, the spot brick can be continuously produced without adjusting the kiln temperature, and the repeatability among different batches of spot bricks is good, the product color is good, and the product yield is high.
Example ten:
the invention also provides a spot brick, wherein the spot brick comprises the temperature-adjusting slurry for increasing the firing temperature of the spot brick.
It can be understood that the spot brick provided by the invention is added with the temperature-adjusting slurry, so that after the spot brick is added with the spot particles for reducing the firing temperature of the spot brick, mud raw materials with high aluminum content, low magnesium content, low iron content and good plasticity are added, the spot brick is influenced by the added spot particles, the firing temperature of the spot brick is effectively increased by adding the temperature-adjusting slurry after the firing temperature of the spot brick is lowered, and the stability of the firing temperature of the spot brick is further maintained; the method can stabilize the firing temperature of the spot brick, simultaneously does not influence the whiteness of the spot brick, and can synchronously improve the strength of the spot brick.
To better illustrate the differences between the formed speckle brick and the prior art using the conditioning paste of the present invention which increased the firing temperature of the speckle brick, the following tests were performed:
1. preparation of base slurry Standard
When the temperature of the common basic slurry blank is matched with the temperature of the kiln, a part of basic slurry is taken, dried and stored as a standard sample, and the firing state of the kiln is reflected by the water absorption of the standard sample. And pressing the standard sample and the slurry to be adjusted in temperature into small bricks at the same time when detecting the temperature of the blank every time, and firing the small bricks at the same time.
2. Preparation of temperature-regulating syrup
Feeding according to a temperature adjusting slurry formula, processing the temperature adjusting slurry through a ball milling process, and controlling the parameters of the processed temperature adjusting slurry to:
the glaze slurry fineness of the temperature-adjusting slurry is calculated by a 325-mesh sieve, and the screen residue is 1.0-1.4%;
the viscosity of the temperature adjusting slurry is 40-100 seconds;
the specific gravity of the temperature-adjusting pulp is not less than 1.67;
the moisture content in the temperature-adjusting pulp is 39% -41%.
3. Mud water absorption detection
Firstly, the influence on the blank temperature (firing temperature) and the water absorption of the spot brick is caused by adding the pigment of the spot particles into the basic slurry, and the detailed description is shown in the following table 1;
TABLE 1 influence of speckle granule on Water absorption Rate
From table 1, it can be seen that the water absorption of the base slurry and the firing temperature are greatly affected by the speck particles (the water absorption of the corresponding product is different at different firing temperatures). Since the coloring material (mottle particles) used in different products is different, it is very difficult to reduce the influence of the mottle particles on the firing temperature by adjusting the base slurry in advance.
During detection, sampling the slurry prepared with the spot particles to be sprayed and pressing a small brick sample with a basic slurry standard sample at the same time; and respectively drying 300g of slurry, adding 11 g of water into 130g of dry materials, manually granulating until all materials pass through a 30-mesh sieve, taking 129g of powder, and pressing into small bricks by using a small press. The pressed small brick sample needs to ensure the consistency of moisture and thickness as much as possible, and the error of water absorption ratio comparison is reduced.
The pressed small brick samples were placed in a 160 ℃ oven to dry completely for 20 minutes and fired in a large production finishing kiln with alumina pads (involving a kiln maximum temperature of 1224 ℃ C., firing time of 47.5 minutes). The thickness of the used alumina backing plate is 8mm, the heat insulation effect is not obvious, and the firing state of the kiln can be reacted to a greater degree. And cooling the fired small brick sample, and then placing the cooled small brick sample into a vacuum water absorption tester to measure the water absorption (vacuumizing for 30 minutes, and draining and soaking for 15 minutes).
And comparing the measured water absorption value of the small brick sample with a standard sample, and adding the temperature-regulating slurry in a corresponding proportion. And re-sampling after the added temperature-regulating slurry is uniformly dispersed, and performing sample preparation and water absorption comparison again until the water absorption is adjusted to be close to that of the standard sample fired in the same batch.
4. Temperature regulation of spot brick
And (3) pressing the base slurry with the temperature required to be adjusted and the colored slurry added with the spot particles into small bricks at the same time, detecting the water absorption rate after sintering, and adding corresponding temperature-adjusting slurry according to the result of comparison with the standard sample. And re-sampling after the temperature-adjusting slurry is uniformly stirred, and repeating the steps until the error between the water absorption of the slurry to be measured and the water absorption of the standard sample is within plus or minus 0.02. The effect of the tempering pastes in actual production is shown in tables 2 and 5.
4.1. Application of temperature-adjusting pulp in basic pulp
Table 2 use of tempering slurries in base slurries
It should be noted that the above-mentioned basic pulp has the constituents and contents of pale and dark whiles known in the art, and the present invention is only directly applied to the effect of the tempering pulp of the present invention. Specifically, the chemical composition analysis of the pale and dark whits are shown in table 3 below:
TABLE 3 chemical composition of pale and deep normal whites
Taking the light white base slurry as an example, after the temperature-adjusting slurries with different proportions are added, the chemical components of the base slurry of the spot brick are shown in the following table 4;
TABLE 4 influence of tempered pulps on the chemical composition of the pale plain base pulp
From table 4, it can be seen that the effect of the temperature-adjusting slurry on the chemical composition of the pale white base slurry is mainly in the four aspects of aluminum content, magnesium content, sodium content and iron content, and the effect of adjusting the blank temperature is achieved by changing the composition.
4.2. Application of temperature-regulating paste in color paste
Table 5 application of temperature-regulating pastes in color pastes
The color paste refers to a glaze slip obtained by adding spot particles into a spot brick, the formula components and the content of zz6879 dark ash and zz6879 light ash in the mud number are known in the art, and the color paste is only directly applied to embody the effect of the temperature-regulating paste in the invention.
In summary, as can be seen from the above table 5, the effect of the conditioning slurry of the present invention is more obvious when the conditioning slurry is added by adding the speckle particles. When the water absorption of the base slurry standard sample is about 0.25, the water absorption can be increased by 0.1 by adding 0.3 percent of the temperature-adjusting slurry.
In summary, the invention provides a temperature adjusting slurry for improving the firing temperature of a spot brick, the spot brick and a manufacturing method thereof, wherein the raw materials of the temperature adjusting slurry comprise 48-52% of washing mud by mass percent; 13 to 17 percent of Jintai ball soil; 33 to 37 percent of Nanning white mud. The mud raw materials with high aluminum content, low magnesium content, low iron content and good plasticity are adopted in the temperature-adjusting slurry, so that the spot bricks are influenced by the added spot particles, the firing temperature of the spot bricks is lowered, and the firing temperature of the spot bricks is effectively increased by adding the temperature-adjusting slurry, so that the stability of the firing temperature of the spot bricks is maintained, the product color repeatability among different batches of spot bricks is improved, the production continuity is ensured, and the production efficiency is improved; the method can stabilize the firing temperature of the spot brick, simultaneously does not influence the whiteness of the spot brick, and can synchronously improve the strength of the spot brick.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (6)
1. The temperature-adjusting slurry for improving the firing temperature of the spot brick is characterized by comprising the following raw materials in percentage by mass:
48-52% of washing mud; 13 to 17 percent of Jintai ball soil; 33-37% of Nanning white mud;
the chemical composition of the temperature adjusting pulp comprises the following components in percentage by mass: siO 22 55.61%；Al2O3 30.05%；Fe2O31.15%；CaO 0.20%；MgO 0.28%；K2O 2.22%；Na20.40 percent of O; the ignition loss is 10.09%;
the chemical composition of the washing mud comprises the following components in percentage by mass: siO 22 48.58%；Al2O3 34.91%；Fe2O31.36%；CaO 0.20%；MgO 0.65%；K2O 1.71%；Na20.19 percent of O; the ignition loss is 12.40 percent;
the chemical composition of the Jintai ball clay comprises the following components in percentage by mass: siO 22 50.63%；Al2O3 33.42%；Fe2O3 1.19%；CaO 0.15%；MgO 0.41%；K2O 1.62%；Na20.23 percent of O; the ignition loss is 12.35 percent;
the south Ningbai mud comprises the following chemical components in percentage by mass: siO 2263.55%；Al2O324.50%；Fe2O30.95%；CaO 0.20%；MgO 0.44%；K2O 1.56%；Na20.55 percent of O; the loss on ignition is 8.25%.
2. The temperature-adjusting slurry for increasing the firing temperature of the spot brick as claimed in claim 1, wherein the raw materials of the temperature-adjusting slurry comprise, by mass:
washing with water to obtain 50% of mud; 15% of Jintai ball soil; 35% of Nanning white mud.
3. The temperature-adjusting slurry for increasing the firing temperature of the spot brick as claimed in claim 2, wherein the temperature-adjusting slurry is processed by a ball milling process;
the glaze slurry fineness of the temperature-adjusting slurry is calculated by a 325-mesh sieve, and the screen residue is 1.0-1.4%;
the viscosity of the temperature adjusting slurry is 40-100 seconds;
the specific gravity of the temperature-adjusting pulp is not less than 1.67;
the moisture content in the temperature-adjusting pulp is 39% -41%.
4. The temperature-adjusting slurry for increasing the firing temperature of a spot brick according to any one of claims 1 to 3, wherein the amount of the temperature-adjusting slurry added is 0.15 to 2.0% by mass.
5. A method for producing a checker brick, characterized in that it comprises a step of adding a temperature-adjusting slurry for increasing the firing temperature of a checker brick as claimed in any one of claims 1 to 4.
6. A speckle brick, which comprises the temperature control paste for increasing the firing temperature of the speckle brick as claimed in any one of claims 1 to 4.
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