Tap hole clay for recycled material high blast furnace and preparation method thereof
A technology for recycled materials and blast furnaces, which is applied in blast furnace clay and its preparation, which can solve the problems of large mineral resources, electric energy, power consumption, and consumption, and achieve good workability, energy saving, and mineral resource conservation.
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Embodiment 1
[0019] (1) Blast furnace mud for recycled materials is prepared according to the following requirements:
[0020] Recycled material 3-0mm 446kg
[0021] Clay 0-0.8mm 130kg
[0022] Sericite 0-0.088mm 22kg
[0023] Bitumen 22kg
[0024] Tar 100kg
[0025] (2) Pour the above powder into the wheel mill and mix for 10 minutes, then add 85kg of tar, mix for 25 minutes, then add 15kg of tar and mix for 15 minutes. bag to spare.
[0026] (3) This gun clay is used for 1000-1800m 3 In the blast furnace, the blast furnace mud is made into a 40×40×160mm sample and the physical performance indicators for testing are:
[0027] 300℃×24h bulk density: 1.8g / cm 3 , compressive strength 14MPa;
[0028] 1350℃×24h Bulk density: 1.75g / cm 3 , compressive strength 20MPa;
[0029] The line change after burning at 1350°C is -1.8%;
[0030] 1350℃×1h high temperature flexural strength is 2.1MPa.
Embodiment 2
[0032] (1) Blast furnace mud for recycled materials shall be batched according to the following requirements
[0033] Recycled material 3-0mm 382kg
[0034] Clay 0-0.8mm 130kg
[0035] Sericite 0-0.088mm 25kg
[0036] Bitumen 25kg
[0037] Tar 115kg
[0038] (2) Pour the above powder into the wheel mill and mix for 8 minutes, then add 98kg of tar, mix for 30 minutes, then add 17kg of tar and mix for 20 minutes, and the material temperature is 50°C during the mixing. Then the material is extruded to form the mud and packed into bags for later use.
[0039] (3) The physical performance indicators of the clay made into a 40×40×160mm sample are as follows:
[0040] 300℃×24h bulk density: 2.1g / cm3, compressive strength 18MPa;
[0041] 1350℃×24h bulk density: 2.0g / cm3, compressive strength 25MPa;
[0042] Line change after burning at 1350°C -2.0%;
[0043] 1350℃×1h high temperature flexural strength is 2.3MPa.
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