Preparation method of siliceous stuffing sand
A technology of drainage sand and silica, which is applied in the field of drainage sand, can solve the problems of low self-opening rate and "bridging", and achieve the effects of slowing down the sintering speed, reducing contact and reducing strength
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Embodiment 1
[0021] A preparation method of siliceous drainage sand, comprising the following steps:
[0022] Step 1, weigh 75kg of quartz sand, 5kg of potassium feldspar and 8kg of graphite powder, add them to the mixing equipment in turn, stir at high speed for 15 minutes, then add 12kg of regulator, stir at high speed for 8-12 minutes, then add 8kg of water , high-speed stirring and mixing evenly to obtain mixture A;
[0023] Step 2: put the mixture A in step 1 into a rotary drying oven and bake at a temperature of 170° C. for 2 hours to obtain a siliceous drainage sand product.
Embodiment 2
[0025] A preparation method of siliceous drainage sand, comprising the following steps:
[0026] Step 1: Weigh 95kg of quartz sand, 1kg of potassium feldspar and 1kg of graphite powder according to mass percentage, add them to the mixing equipment in turn, stir at high speed for 20 minutes, then add 3kg of regulator, stir at high speed for 8-12 minutes, then add 10kg of water was stirred evenly at high speed to obtain mixture A;
[0027] Step 2: put the mixture A in step 1 into a rotary drying oven and bake at a temperature of 200° C. for 1.5 hours to obtain a siliceous drainage sand product.
Embodiment 3
[0029] A preparation method of siliceous drainage sand, comprising the following steps:
[0030] Step 1: Weigh 85kg of quartz sand, 3kg of potassium feldspar and 4kg of graphite micropowder according to the mass percentage, add them to the mixing equipment in turn, stir at high speed for 20 minutes, then add 8kg of regulator, stir at high speed for 8-12 minutes, then add 9kg of water was mixed evenly with high-speed stirring to obtain mixture A;
[0031] Step 2: put the mixture A in step 1 into a rotary drying oven and bake at a temperature of 185° C. for 2 hours to obtain a siliceous drainage sand product.
[0032] In the present invention, quartz sand is used as the main raw material, and potassium feldspar is used as a low melting point sintering agent. At a lower temperature, potassium feldspar powder can quickly form a large amount of liquid phase in the drainage sand, which promotes the rapid sintering of the surface drainage sand and prevents The agitation of the molte...
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