摘要
通过自行设计搭建的高温熔融-高压水射流装置,进行了熔融态转炉钢渣与高炉渣的高压水射流试验.试验表明:采用高压水射流直接冷却微细化的方法能够同时实现转炉钢渣的微细化与胶凝活性增强;在本文试验条件下,采用8～10MPa的高压水,射流冷却后的射流钢渣体积平均粒度达到94.3μm,主要物相是玻璃相和结晶矿物Ca2S iO4,由其所制备胶凝材料养护28 d的抗压强度达33.96MPa,超过原钢渣制备胶凝材料8MPa.射流高炉矿渣形成絮状结构,并具有更低胶凝活性.与熔融态高炉矿渣相比,熔融态转炉钢渣更适合采用高压水射流方法.
A method of quenching and atomizing the melting slag simultaneously under a high pressure water jet was put forward. Experiments about cooling and pulverizing the melting steel slag and the melting blast furnace （BF） slag by a high pressure water jet of 8 to 10 MPa were conducted on a self-made slag melting and high pressure water cooling system. The results show that the atomized steel slag can be pulverized with an average particle size of 94.3μm and a composition of glass phase and Ca2SiO4, its reactivity is increased and the compressive strength of its cement samples aged for 28 d is 33.96 MPa, which is 8 MPa higher than that of cement samples from raw steel slag. The quenched BF slag forms flocculent structure, with degraded reactivity. The proposed method is more suitable for steel slag tapping processes than BF slag tapping processes.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2011年第2期161-165,共5页
Journal of University of Science and Technology Beijing
基金
国家自然科学基金资助项目(No.51034008
No.51004012)
关键词
钢铁冶金
渣
废料利用
粉碎
水泥
iron and steel metallurgy
slags
waste utilization
pulverization
cements
