A kind of cold box ceramsite sand and preparation method thereof
A technology of ceramsite sand and cold box, which is applied in the direction of cores, manufacturing tools, casting molding equipment, etc., can solve the problems of large thermal expansion, large angle coefficient, poor fluidity, etc., to maintain roundness and fluidity, Effects of improving fire resistance and cladding properties
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Embodiment 1
[0034] A cold box ceramsite sand, comprising the following raw materials in parts by weight: ceramsite sand 80kg, ferric oxide 5kg, zeolite powder 0.1kg, organic resin 1kg;
[0035] The organic resin is composed of the following raw materials: 50g of phenolic resin and 40g of polyisocyanate.
[0036] The preparation method of described cold box ceramsite sand, comprises the following steps:
[0037] (1) prepare ceramsite sand;
[0038] (2) Pulverize ceramsite sand, ferroferric oxide, zeolite powder and organic resin respectively, then mix and stir evenly, add in the cold box; feed triethylamine gas into the cold box to obtain the cold box Box of ceramsite sand.
Embodiment 2
[0040] A cold box ceramsite sand, comprising the following raw materials in parts by weight: ceramsite sand 90kg, ferric oxide 7kg, zeolite powder 0.8kg, organic resin 2kg;
[0041] The organic resin is composed of the following raw materials: 50g of phenolic resin and 40g of polyisocyanate.
[0042] The preparation method of described cold box ceramsite sand, comprises the following steps:
[0043] (1) Prepare ceramsite sand; crush clay, slate, shale or coal gangue; add the crushed raw materials into a granulator for granulation, and add aluminum powder to the granulator after the granulation is completed , mix and stir evenly to obtain a spherical semi-finished product coated with aluminum powder, and sinter the spherical semi-finished product coated with aluminum powder to obtain the ceramsite sand.
[0044] (2) Pulverize ceramsite sand, ferroferric oxide, zeolite powder and organic resin respectively, then mix and stir evenly, add in the cold box; feed triethylamine gas i...
Embodiment 3
[0046] A cold box ceramsite sand, comprising the following raw materials in parts by weight: ceramsite sand 100kg, ferric oxide 8kg, zeolite powder 1kg, organic resin 2kg;
[0047] The organic resin is composed of the following raw materials: 55g of phenolic resin and 50g of polyisocyanate.
[0048]The preparation method of described cold box ceramsite sand, comprises the following steps:
[0049] (1) Prepare ceramsite sand; crush clay, slate, shale or coal gangue into particles with a fineness of 500 mesh; add the raw materials obtained through crushing into a granulator for granulation, and after the granulation is completed, send to the granulator Add aluminum powder with a fineness of 600 mesh into the granulator, mix and stir evenly to obtain a spherical semi-finished product coated with aluminum powder, and sinter the spherical semi-finished product coated with aluminum powder at a temperature of 1000°C for 25 minutes to obtain the described Ceramsite sand.
[0050] (2...
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