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Production method of zirconia brick for extra-high temperature carbon black furnace
The invention relates to a production raw material of a zirconia brick for an extra-high temperature carbon black furnace. The production raw material is composed of zirconia powder, Al2O3 micro-powder, zirconium dioxide sol and dextrin. The total proportion of the production raw materials is as follows in percentage by mass: 2-4% of Al2O3 micro powder, 2.5-3.5% of zirconium dioxide sol, 1.5-2.0%of dextrin and the balance of zirconium oxide powder. The zirconium oxide brick for the ultra-high temperature carbon black furnace has the following parameter properties: ZrO2 is greater than or equal to 80%, and the volume density is greater than or equal to 4.85 g/cm3; the normal-temperature compressive strength is greater than or equal to 35 MPa, and the compressive strength can reach 100 MPaor above after high-temperature sintering; and the thermal expansion coefficient (200-1000 DEG C) is 9.0*10<-6> (1/DEG C). The thermal shock stability (1100 DEG C water cooling) is more than or equalto 3 times. The heat conductivity coefficient is 3-4W/m.K. The long-term use temperature ranges from 2100 DEG C to 2300 DEG C; and the zirconia brick is kept stable in oxidizing and reducing atmospheres.
本发明涉及一种特高温炭黑炉用氧化锆砖的生产原料，所述的生产原料由氧化锆粉、Al2O3微粉、二氧化锆溶胶和糊精四种物质构成；该生产原料总配比为：以质量计，Al2O3微粉占2‑4%，二氧化锆溶胶占2.5～3.5%，糊精占1.5～2.0%，余为氧化锆粉。本发明制备的特高温炭黑炉用氧化锆砖具有以下参数性质：ZrO2≥80%，体积密度≥4.85g/cm3；常温耐压强度≥35MPa，经高温烧结后耐压强度可达100MPa以上；热膨胀系数（200～1000℃）9.0×10‑6（1/℃）。热震稳定性(1100ºC‑水冷):≥3次。导热系数3～4W/m.K。长期使用温度：2100～2300℃；且氧化锆砖在氧化、还原气氛中都保持稳定。
Production method of zirconia brick for extra-high temperature carbon black furnace
The invention relates to a production raw material of a zirconia brick for an extra-high temperature carbon black furnace. The production raw material is composed of zirconia powder, Al2O3 micro-powder, zirconium dioxide sol and dextrin. The total proportion of the production raw materials is as follows in percentage by mass: 2-4% of Al2O3 micro powder, 2.5-3.5% of zirconium dioxide sol, 1.5-2.0%of dextrin and the balance of zirconium oxide powder. The zirconium oxide brick for the ultra-high temperature carbon black furnace has the following parameter properties: ZrO2 is greater than or equal to 80%, and the volume density is greater than or equal to 4.85 g/cm3; the normal-temperature compressive strength is greater than or equal to 35 MPa, and the compressive strength can reach 100 MPaor above after high-temperature sintering; and the thermal expansion coefficient (200-1000 DEG C) is 9.0*10<-6> (1/DEG C). The thermal shock stability (1100 DEG C water cooling) is more than or equalto 3 times. The heat conductivity coefficient is 3-4W/m.K. The long-term use temperature ranges from 2100 DEG C to 2300 DEG C; and the zirconia brick is kept stable in oxidizing and reducing atmospheres.
本发明涉及一种特高温炭黑炉用氧化锆砖的生产原料，所述的生产原料由氧化锆粉、Al2O3微粉、二氧化锆溶胶和糊精四种物质构成；该生产原料总配比为：以质量计，Al2O3微粉占2‑4%，二氧化锆溶胶占2.5～3.5%，糊精占1.5～2.0%，余为氧化锆粉。本发明制备的特高温炭黑炉用氧化锆砖具有以下参数性质：ZrO2≥80%，体积密度≥4.85g/cm3；常温耐压强度≥35MPa，经高温烧结后耐压强度可达100MPa以上；热膨胀系数（200～1000℃）9.0×10‑6（1/℃）。热震稳定性(1100ºC‑水冷):≥3次。导热系数3～4W/m.K。长期使用温度：2100～2300℃；且氧化锆砖在氧化、还原气氛中都保持稳定。
Production method of zirconia brick for extra-high temperature carbon black furnace
一种特高温炭黑炉用氧化锆砖的生产方法
SONG ERPENG (author) / SONG JINCHAO (author) / MENG XIANGFENG (author)
2021-03-30
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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