Ceramic skeleton material for building and mfg. method thereof

A technology of ceramic aggregate and manufacturing method, which is applied in the field of ceramic aggregate for road construction and manufacturing, can solve the problems of low metal oxide content, poor impact strength, poor thermal stability, etc., and achieve low raw material cost and high impact strength. High, good thermal stability

Inactive Publication Date: 2007-11-07
张仲汉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, asphalt or cement is generally used as the pavement material for road construction. The aggregate used is basically limestone or gravel. This aggregate has low hardness, is easy to weather, has poor wear resistance, and low corrosion resistance. It is naturally formed and the color is monotonous.
The patent literature discloses the composition of aggregates using silica and alumina as the main raw materials to replace stones and improve performance in terms of strength, wear resistance, and corrosion resistance. However, the SiO2 in the formula 2 The content is more, the impact strength of the product is poor; the content of metal oxide is less, the firing temperature is higher, the energy consumption is more, and the thermal stability is relatively poor
In the manufacturing process, there are disadvantages such as low efficiency and high energy consumption

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] (1) According to SiO 2 55%, Al 2 o 3 30%, K 2 O 4%, Li 2 O 5%, CaO 0.2%, MgO 5%, Fe 2 o 3 The ratio of 0.8% weighs the raw materials and mixes them evenly, then adds Fe which accounts for 3% of the total weight of the above ingredients 2 o 3 (2) adding the above-mentioned prepared raw materials to a ball mill and adding 25-40% weight of water to grind into a 200-mesh sieve remaining <0.5% fine mud; After the water is filtered by the machine, the mud is practiced twice under the vacuum condition of -0.095MPa by the vacuum mud refining machine, and the irregular mud strips are extruded. The mud strips are dried by a horizontal roller dryer using waste heat, and then made by a granulator. Irregular blocks, and automatically grind off the sharp edges and corners of the blocks during the granulation process; in the granulation process, according to the required specifications, install different specifications of screens to make semi-finished products of various spe...

Embodiment 2

[0013] (1) According to SiO 2 60%, Al 2 o 3 25%, K 2 O 7%, Li 2 O 3%, CaO 0.1%, MgO 4.5%, Fe 2 o 3 The ratio of 0.5% weighs the raw materials and mixes them evenly, and then adds 3% of the total weight of the above ingredients. 2 o 3 (2) Add the above-mentioned prepared raw materials to a ball mill and add 40% water to grind them into a fine slurry with a 200-mesh sieve <0.5%; (3) The above-mentioned slurry is subjected to strong magnetic tapping, and filtered through a mud filter Afterwards, the mud is practiced twice under the vacuum condition of -0.085MPa by the vacuum mud refining machine, and the irregular mud strips are extruded. The mud strips are dried by the horizontal roller dryer using the waste heat, and then the irregular mud strips are made by the granulator. block, and the sharp edges and corners of the block are automatically ground off during the granulation process; in the granulation process, screens of different specifications are installed accordi...

Embodiment 3

[0015] (1) According to SiO 2 58%, AL 2 o 3 27%, K 2 O 6%, Li 2 O 5%, CaO 0.6%, MgO 3%, Fe 2 o 3 The ratio of 0.4% is taken by weighing the raw materials and mixed evenly, and then adding orange pigment (prepared by known methods from titanium dioxide, chromium trioxide and antimony trioxide) accounting for 4% of the total weight of the above ingredients; (2) mix the above The raw materials are added to the ball mill and 35% of water is added to grind them into fine mud with a 200-mesh sieve <0.5%; (3) The above-mentioned mud is subjected to strong magnetic tapping, and after being filtered by a mud filter, it is passed through a vacuum mud trainer in - The mud is practiced twice under the vacuum condition of 0.090MPa, and the irregular mud strips are extruded. The mud strips are dried by a horizontal roller dryer using waste heat, and then made into irregular lumps by a granulator, and in the granulation process During the granulation process, screens of different spe...

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Abstract

This invention relates to a kind of ceramic aggregate for road building, which has a mass-fraction composition as follows: 55~60% SiO2, 25~30% Al2O3, 4~7% K2O, 3~5% Li2O, 0.1~0.6% CaO, 2~5% MgO, 0.1~0.8% Fe2O3 and inorganic ceramic pigment weighing 3~5wt% of the total components mentioned above. The ceramic aggregate is fabricated by low-temperature firing. In this invention, raw material composition suitable for rapid low-temperature firing is designed, and therefore, raw materials are low-cost, the technique is simple and efficient, the firing temperature can be lowered by 150~200 deg. C compared to previous techniques and thus it's energy-saving, the firing period is shortened to 4~6 hours and the product eligibility is raised from 80% to over 98%. Besides, the water absorption rate is lower than 1.0%. It has good thermo stability and no cracking comes out when heated or refrigerated sharply. It also has high strength, good wear resistance with a wear rate lower than 13%, a small density of 2.2~2.8 gram per cu cm and high impact strength.

Description

technical field [0001] The invention belongs to additive materials for paving roads, in particular to a ceramic aggregate for road construction and a manufacturing method. Background technique [0002] At present, asphalt or cement is generally used as the pavement material for road construction. The aggregate used is basically limestone or gravel. This aggregate has low hardness, is easy to weather, has poor wear resistance, and low corrosion resistance. It is naturally formed and has a monotonous color. The patent literature discloses the composition of aggregates using silica and alumina as the main raw materials to replace stones and improve performance in terms of strength, wear resistance, and corrosion resistance. However, the SiO2 in the formula 2 The content is more, the impact strength of the product is poor; the content of metal oxide is less, the firing temperature is higher, the energy consumption is more, and the thermal stability is relatively poor. In the ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/14C04B35/622C04B14/04
Inventor 张仲汉
Owner 张仲汉
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