Casting material
A technology for castables and raw materials, applied in the field of refractory materials, can solve problems such as unfavorable high-temperature mechanical properties of castables, and achieve the effects of increasing thermal flexural strength and mechanical properties, increasing bonding, and increasing adhesion.
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[0018] Preparation of additives: Put magnesia and yttrium oxide in a mill at a mass ratio of 3:2-3, grind at 600r / min for 20-25min, collect the milled material, and then mass ratio 4-6: 1~3: 1~3, put the grinding material, strontium carbonate and boron carbide into the stirring mixer, stir at 300r / min for 10~15min, and then the additive can be obtained.
[0019] The casting material of the present invention includes the following raw materials in parts by weight, 40-45 parts of mullite, 20-25 parts of quartz stone, 8-12 parts of blast furnace slag, 5-8 parts of additives, 4-7 parts of barium feldspar, 3-5 parts of water reducer, 2-4 parts of adhesive, 1-2 parts of auxiliary additives.
[0020] The water reducing agent is any one of sodium pyrophosphate, magnesium lignosulfonate or sodium methacrylic sulfonate, the binder is calcium aluminate cement, and the auxiliary additive is polydimethylsiloxane.
example 1
[0022] Preparation of additives: Put magnesia and yttrium oxide in a mill at a mass ratio of 3:3, grind at 600r / min for 25min, collect the ground material, and then grind at a mass ratio of 6:3:3. Put the ground material, strontium carbonate and boron carbide into a stirring mixer, and stir at 300r / min for 15min to obtain the additive.
[0023] The castable of the present invention includes the following raw materials in parts by weight, 42 parts of mullite, 22 parts of quartz stone, 10 parts of blast furnace slag, 7 parts of additives, 6 parts of feldspar, 4 parts of water reducing agent, and 3 parts of binder , 2 parts of auxiliary additives.
[0024] The water reducing agent is any one of sodium pyrophosphate, magnesium lignosulfonate or sodium methacrylate, the binder is calcium aluminate cement (Zhengzhou Jinshi Refractory Co., Ltd.), and the auxiliary additive is polydimethyl base siloxane.
example 2
[0026] Preparation of additives: Put magnesia and yttrium oxide in a mill at a mass ratio of 3:3, grind at 600r / min for 25min, collect the ground material, and then grind at a mass ratio of 6:3:3. Put the ground material, strontium carbonate and boron carbide into a stirring mixer, and stir at 300r / min for 15min to obtain the additive.
[0027] The castable of the present invention includes the following raw materials in parts by weight, 45 parts of mullite, 25 parts of quartz stone, 12 parts of blast furnace slag, 8 parts of additives, 7 parts of barium feldspar, 5 parts of water reducer, 4 parts of adhesive agent, 2 auxiliary additives.
[0028] The water reducer is sodium pyrophosphate, the binder is calcium aluminate cement (Yangquan Tianlong Engineering Materials Co., Ltd.), and the auxiliary additive is polydimethylsiloxane.
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