高强钢渣陶粒特性试验研究

为资源化利用钢渣,以钢渣、粉煤灰和粘土为主要原料制备高强陶粒。试验研究表明,随钢渣的质量分数增加,钢渣高强陶粒的堆积密度增加、吸水率降低、筒压强度提高。当钢渣质量分数在10~20%时,可制得堆积密度800~1200 kg/m~3、筒压强度7~13 MPa的高强陶粒。SEM-EDS分析发现,陶粒内部气孔多、分布均匀、少连通,这种结构有利于堆积密度的降低。X射线衍射（XRD）分析表明,陶粒中主要晶体为透辉石（CaO·MgO·2SiO_2）,石英（α-SiO_2）、钙铁辉石（CaO·FeO·2SiO_2）和钙长石（CaO·Al_2O_3·2SiO_2）,这些晶体的存在有助于钢渣陶粒强度的提高。...

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Bibliographic Details
Published in矿产综合利用 no. 1; pp. 96 - 100
Main Author 向晓东;唐卫军;江新卫;何明生;李梦玲;李灿华
Format Journal Article
LanguageChinese
Published 武汉科技大学资源与环境工程学院,湖北武汉,430081%北京首钢国际工程技术有限公司,北京,100043%武汉钢铁股份有限公司研究院前沿研究所,湖北武汉,430081 2018
Subjects
钢渣;陶粒;堆积密度;筒压强度;吸水率
堆积密度
筒压强度
Ceramsite
吸水率
钢渣
Steel slag
Cylinder pressure strength
Water absorption
Packing density
陶粒
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ISSN1000-6532
DOI10.3969/j.issn.1000-6532.2018.01.021

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Summary:为资源化利用钢渣,以钢渣、粉煤灰和粘土为主要原料制备高强陶粒。试验研究表明,随钢渣的质量分数增加,钢渣高强陶粒的堆积密度增加、吸水率降低、筒压强度提高。当钢渣质量分数在10~20%时,可制得堆积密度800~1200 kg/m~3、筒压强度7~13 MPa的高强陶粒。SEM-EDS分析发现,陶粒内部气孔多、分布均匀、少连通,这种结构有利于堆积密度的降低。X射线衍射（XRD）分析表明,陶粒中主要晶体为透辉石（CaO·MgO·2SiO_2）,石英（α-SiO_2）、钙铁辉石（CaO·FeO·2SiO_2）和钙长石（CaO·Al_2O_3·2SiO_2）,这些晶体的存在有助于钢渣陶粒强度的提高。
Bibliography:51-1251/TD
The steel slag, the fly ash, and the clay are used as the main raw material for the ceramsite preparation to solve the utilization problem of the steel slag. Test results show that with the increase of mass fraction of the slag, the packing density of the ceramsite goes up, the water absorption of the ceramsite gets less, and the cylinder pressure strength becomes stronger. When the mass fraction of steel slag is 10-20%, the high strength ceramsite with the bulk density of 800-1200 kg/m~3, and the cylinder pressure strength of 7-13 MPa can be made. SEM-EDS analysis shows that there are a large number of small and insulated pores in the slag ceramsite. It is, therefore, indicated that the ceramsite with the lower density and the higher cylinder pressure strength can be prepared by the steel slag. It is found from XRD analysis that the diopside（CaO·MgO_2·SiO_2）, hedenbergite（CaO·FeO·2SiO_2）, quartz（α-SiO_2）, as well as the anorthite（CaAl_2·Si_2O_8） are the main crystals in the steel slag ceramsite. Th
ISSN:1000-6532
DOI:10.3969/j.issn.1000-6532.2018.01.021