Refractory wear-resistant pouring material and preparation method thereof

[0044] The specific steps of the preparation method of refractory and wear-resistant castable are as follows:

[0045] Step 1. Preparation of composite glue

[0046] Take appropriate mass ratio of polyvinyl alcohol, water-soluble nano-grade silica sol, kaolin, vinyl triethoxysilane, boron fiber powder, and retarder to mix uniformly to prepare a composite glue;

[0047] Step two, prepare mixed matrix slurry

[0048] Take the ground natural river sand, micro-alumina powder, micro-silica powder, micro-steel fiber, and dispersant solution of appropriate mass ratio and particle size, and mix them uniformly to form a slurry that has the fluidity that can be poured in a mold;

[0049] Step three, prepare refractory and wear-resistant castable

[0050] Add the composite glue prepared in step 1 of the appropriate mass ratio to the graded ceramic particles with the appropriate mass ratio. The composite glue forms a gel around the particles, and then vacuum filtration and drying are performed. The gel

[0051] Implementation case 1

[0052] Step 1. Preparation of composite glue

[0053] Take appropriate mass ratio of polyvinyl alcohol (35%), water-soluble nano-scale silica sol (44.8%), kaolin (12%), vinyl triethoxysilane (0.2%), boron fiber powder (8%), Retarder (organic acid retarder 0.001%) is mixed uniformly to prepare composite glue;

[0054] Step two, prepare mixed matrix slurry

[0055] Take the ground natural river sand (15%, 5μm), alumina powder (10%, 5μm), microsilica powder (15%, 1μm), micro steel fiber (15%, 0.1mm) and Dispersant solution (45%, 15% sodium citrate solution), mixed uniformly to form a slurry, with fluidity that can be poured in a mold;

[0056] Step three, prepare refractory and wear-resistant castable

[0057] Step 1 of adding proper mass ratio to the graded ceramic particles (8~5mm: 5~3mm: 3~1mm: 1~0mm=35%: 25%: 35%: 5%) with mass ratio (65%) The prepared composite glue (15%), the composite glue forms a gel around the particles, then vacuum filtration and dry

[0058] Implementation case 2

[0059] Step 1. Preparation of composite glue

[0060] Take appropriate mass ratio of polyvinyl alcohol (20%), water-soluble nano-scale silica sol (55%), kaolin (20%), vinyl triethoxy silane (0.8%), boron fiber powder (4.2%), Retarder (organic acid retarder 0.001%) is mixed uniformly to prepare composite glue;

[0061] Step two, prepare mixed matrix slurry

[0062] Take the ground natural river sand (20%, 10μm), alumina powder (12%, 8μm), microsilica powder (20%, 1μm), micro steel fiber (18%, 0.1mm) and Dispersant solution (40%, 15% sodium citrate solution), mixed uniformly to form a slurry, with fluidity that can be poured in a mold;

[0063] Step three, prepare refractory and wear-resistant castable

[0064] Step 1 of adding an appropriate mass ratio to the graded ceramic particles (8~5mm: 5~3mm: 3~1mm: 1~0mm=40%:30%:20%:10%) with a mass ratio (60%) The prepared composite glue (12%), the composite glue forms a gel around the particles, then vacuum filtrati