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Chrome corundum brick for chemical salt-containing wastewater incinerator
The invention relates to a chrome corundum brick for a chemical salt-containing wastewater incinerator, and belongs to the field of refractory materials. The chromium corundum brick is prepared by taking regenerated refractory raw material chromium corundum with the particle size of less than or equal to 3mm, chromium oxide micro powder with the particle size of less than or equal to 8 microns, aluminum oxide micro powder with the particle size of less than or equal to 4 microns and fused white corundum with the particle size of less than or equal to 3mm as raw materials, adding a binding agent, performing compression molding to obtain a green body, and performing heat preservation in a high-temperature furnace at 1500-1600 DEG C for 3-5 hours, thereby obtaining the chromium corundum brick. According to the invention, the regenerated refractory raw material chromium corundum is used as a pre-added chromium corundum solid solution, and the corundum and chromium oxide fine powder generate the chromium corundum solid solution in situ in the sintering process, so that crystal lattices are activated, the sintering of the material is promoted, and the chromium corundum brick which is high in density, high in normal-temperature and high-temperature strength and good in corrosion resistance to sodium sulfate-containing salt slag is prepared; the working conditions of the chemical salt-containing waste water incinerator can be met, the service life of the furnace lining is prolonged, the positive effect on incineration treatment of the chemical salt-containing waste water is achieved, and resource recycling and economic sustainable development can be achieved.
本发明涉及一种化工含盐废水焚烧炉用铬刚玉砖，属于耐火材料领域。该铬刚玉砖由粒径≤3mm的再生耐火原料铬刚玉、粒径≤8μm的氧化铬微粉、粒径≤4μm的氧化铝微粉、粒径≤3mm的电熔白刚玉为原料，外加结合剂压制成型为生坯于1500~1600℃高温炉中保温3‑5h烧成而成。本发明采用再生耐火原料铬刚玉作为预加入铬刚玉固溶体，刚玉和氧化铬细粉在烧成过程中原位生成铬刚玉固溶体，活化了晶格，促进了材料的烧结，制备出致密度高，常温、高温强度高，抗含硫酸钠盐渣的侵蚀性好的铬刚玉砖，既能满足化工含盐废水焚烧炉工况条件，提高炉衬寿命，对化工含盐废水焚烧处理起到积极作用，又能实现资源循环化利用，经济可持续发展。
Chrome corundum brick for chemical salt-containing wastewater incinerator
The invention relates to a chrome corundum brick for a chemical salt-containing wastewater incinerator, and belongs to the field of refractory materials. The chromium corundum brick is prepared by taking regenerated refractory raw material chromium corundum with the particle size of less than or equal to 3mm, chromium oxide micro powder with the particle size of less than or equal to 8 microns, aluminum oxide micro powder with the particle size of less than or equal to 4 microns and fused white corundum with the particle size of less than or equal to 3mm as raw materials, adding a binding agent, performing compression molding to obtain a green body, and performing heat preservation in a high-temperature furnace at 1500-1600 DEG C for 3-5 hours, thereby obtaining the chromium corundum brick. According to the invention, the regenerated refractory raw material chromium corundum is used as a pre-added chromium corundum solid solution, and the corundum and chromium oxide fine powder generate the chromium corundum solid solution in situ in the sintering process, so that crystal lattices are activated, the sintering of the material is promoted, and the chromium corundum brick which is high in density, high in normal-temperature and high-temperature strength and good in corrosion resistance to sodium sulfate-containing salt slag is prepared; the working conditions of the chemical salt-containing waste water incinerator can be met, the service life of the furnace lining is prolonged, the positive effect on incineration treatment of the chemical salt-containing waste water is achieved, and resource recycling and economic sustainable development can be achieved.
本发明涉及一种化工含盐废水焚烧炉用铬刚玉砖，属于耐火材料领域。该铬刚玉砖由粒径≤3mm的再生耐火原料铬刚玉、粒径≤8μm的氧化铬微粉、粒径≤4μm的氧化铝微粉、粒径≤3mm的电熔白刚玉为原料，外加结合剂压制成型为生坯于1500~1600℃高温炉中保温3‑5h烧成而成。本发明采用再生耐火原料铬刚玉作为预加入铬刚玉固溶体，刚玉和氧化铬细粉在烧成过程中原位生成铬刚玉固溶体，活化了晶格，促进了材料的烧结，制备出致密度高，常温、高温强度高，抗含硫酸钠盐渣的侵蚀性好的铬刚玉砖，既能满足化工含盐废水焚烧炉工况条件，提高炉衬寿命，对化工含盐废水焚烧处理起到积极作用，又能实现资源循环化利用，经济可持续发展。
Chrome corundum brick for chemical salt-containing wastewater incinerator
一种化工含盐废水焚烧炉用铬刚玉砖
LI SUPING (author) / ZHANG LIXIN (author) / XU ENXIA (author) / KANG XIN (author) / DENG JUNJIE (author) / XUE JUANJUAN (author)
2023-08-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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